Shell Rock River Watershed District Water Management Plan
Prepared for
Shell Rock River Watershed District
2004
Shell Rock River Watershed District Water Management Plan
Wenck File #1323-02
Prepared for:
SHELL ROCK RIVER WATERSHED DISTRICT P.O. Box 1147 Freeborn County Courthouse Albert Lea, Minnesota 56007
Prepared by:
WENCK ASSOCIATES, INC. 1800 Pioneer Creek Center 2004 P.O. Box 249 Maple Plain, Minnesota 55359-0249 (763) 479-4200 Table of Contents
1.0 INTRODUCTION ...... 1-1
1.1 DISTRICT MISSION ...... 1-1 1.2 BACKGROUND ...... 1-1 1.3 LIST OF KNOWN STUDIES, PLANS, AND OTHER RELEVANT DOCUMENTS...... 1-1
2.0 PHYSICAL ENVIRONMENT, LAND USE AND DEVELOPMENT...... 2-1
2.1 PRECIPITATION...... 2-1 2.2 INFORMATION TECHNOLOGY ...... 2-2 2.3 GEOLOGY ...... 2-3 2.3.1 County Setting...... 2-3 2.3.2 Shell Rock River Watershed District Setting ...... 2-14 2.4 SOILS ...... 2-15 2.4.1 County Setting...... 2-15 2.4.2 Shell Rock River Watershed District Soils ...... 2-20 2.5 ORIGINAL VEGETATION...... 2-23 2.5.1 County Setting...... 2-23 2.5.2 Shell Rock Watershed Original Vegetation ...... 2-23 2.6 TOPOGRAPHIC RELIEF OF WATERSHEDS...... 2-25 2.6.1 County Setting...... 2-25 2.6.2 Shell Rock River Watershed District Topographic Relief ...... 2-26 2.7 EXISTING LAND USE ...... 2-28 2.7.1 County Setting...... 2-28 2.7.2 Shell Rock River Watershed District Existing Land Use...... 2-29 2.8 PUBLIC UTILITIES ...... 2-30 2.8.1 County Setting...... 2-30 2.8.2 Shell Rock River Watershed District Public Utilities ...... 2-30 2.8.2.1 Incorporated Cities...... 2-30 2.8.2.2 Unincorporated Villages ...... 2-31 2.9 LAND OWNERSHIP ...... 2-33 2.9.1 County Setting...... 2-33 2.9.2 Shell Rock River Watershed District Land Ownership...... 2-34 2.10 SURFACE WATER QUANTITY...... 2-35 2.10.1 County Setting...... 2-35 2.10.2 Shell Rock River Watershed District Surface Water Quantity ...... 2-37 2.11 SURFACE WATER QUALITY...... 2-39 2.11.1 County Setting...... 2-39 2.11.2 Shell Rock River Watershed District Surface Water Quality ...... 2-41
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc i Table of Contents (Cont.)
2.12 GROUND WATER QUANTITY...... 2-50 2.12.1 County Aquifer Yields ...... 2-50 2.12.2 Shell Rock River Watershed District Ground Water Quantity ...... 2-51 2.13 GROUND WATER QUALITY...... 2-52 2.14 ERODING LAND...... 2-55 2.14.1 County Setting...... 2-55 2.14.2 Shell Rock River Watershed District Eroding Land ...... 2-57 2.15 IRRIGATION ...... 2-58 2.15.1 County Setting...... 2-58 2.15.2 Shell Rock River Watershed District Irrigation ...... 2-58 2.16 DRAINAGE...... 2-59 2.16.1 County Setting...... 2-59 2.16.2 Shell Rock River Watershed District Drainage...... 2-63 2.17 POLLUTANT SOURCES...... 2-65 2.17.1 County Setting...... 2-65 2.17.2 Shell Rock River Watershed District Pollutant Sources ...... 2-69 2.18 ANIMAL FEEDLOTS...... 2-76 2.18.1 County Setting...... 2-76 2.18.2 Shell Rock Watershed Animal Feedlots...... 2-77 2.19 STORAGE TANKS...... 2-79 2.19.1 County Setting...... 2-79 2.19.2 Shell Rock River Watershed District Storage Tanks ...... 2-80 2.20 INDIVIDUAL SEWAGE TREATMENT SYSTEMS, ISTS...... 2-82 2.21 SPECIAL GEOLOGIC CONDITIONS ...... 2-83 2.21.1 County Setting...... 2-83 2.21.2 Shell Rock River Watershed Special Geologic Conditions ...... 2-83 2.22 WETLANDS...... 2-84 2.22.1 County Setting...... 2-84 2.22.1.1 Regulatory Authority...... 2-84 2.22.1.2 Wetland Inventories...... 2-86 2.22.2 Shell Rock River Watershed District Wetlands ...... 2-88 2.23 FLOODPLAINS ...... 2-89 2.23.1 County Setting...... 2-89 2.23.2 Shell Rock River Watershed District Floodplains...... 2-89 2.24 SHORELANDS ...... 2-90 2.24.1 County Setting...... 2-90 2.24.2 Shell Rock River Watershed District Shorelands...... 2-91 2.25 WATER BASED RECREATION LANDS...... 2-94 2.26 FISH AND WILDLIFE HABITAT...... 2-95 2.26.1 County Setting...... 2-95 2.27 WILDLIFE MANAGEMENT AREAS...... 2-113 T:\1323\02\Draft_Plan\finalpdf\finalplan.doc ii Table of Contents (Cont.)
2.28 UNIQUE FEATURES AND SCENIC AREAS...... 2-114 2.28.1 County Setting...... 2-114 2.28.2 Shell Rock River Watershed District Unique Features and Scenic Areas...... 2-115
3.0 IMPLEMENTATION...... 3-1
3.1 APPROACH ...... 3-1 3.2 GOALS ...... 3-1 3.3 PARTNERS AND FUNDING SOURCES ...... 3-1 3.4 CONCEPTUAL COSTS AND TIMELINE ...... 3-2
FIGURE
1 Shell Rock River Watershed
APPENDICES
A Erosion Implementation B Lakes Implementation C Streams Implementation D Urban Implementation E Flooding Implementation F Wetlands Implementation G Groundwater Implementation H Partnering Implementation I Data Implementation J Other Goals
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc iii
1.0 Introduction
1.1 DISTRICT MISSION
The Shell Rock River Watershed District mission is to implement reasonable and necessary improvements to the water-related and other natural resources of the District. Many water related issues are currently being addressed by one or more local, State, and Federal government agencies. The Board will review current levels of enforcement, funding, and labor available to fully achieve stated goals. The Board may increase the extent or pace of implementation by providing the necessary leadership, and assist with funding, volunteer support, and services necessary.
1.2 BACKGROUND
The Shell Rock River Watershed District was formed in 2003 as shown on Figure 1. The following Water Management Plan utilizes the existing information in the Freeborn County Comprehensive Water Management Plan. The numerous historical plans, studies, citizen group documents, and other relevant material were also used as reference material for compiling this plan. The planning process for the District was focused on implementation, utilizing the extensive citizen and governmental information. Implementation details are given in Appendices A through J.
1.3 LIST OF KNOWN STUDIES, PLANS, AND OTHER RELEVANT DOCUMENTS
The following list contains the studies that were compiled for this initial planning effort for the Shell Rock River Watershed District. The documents are listed in reverse chronological order (most recent first).
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 1-1
Lake Management Plan for Lake Chapeau. September 12, 2003.
Proposed Fountain Lake Management Plan. Draft September 24, 2003.
Albert Lea Lake Dredging-Cost Estimate and Potential Dredging Issues. Pinnacle Engineering, August 8, 2003.
Additional Phase II Assessment and Response Action Plan Edgewater Park/Former Albert Lea Dump. Terracon, June 27, 2003.
Subsurface Hydrologic Assessment Edgewater Park / Former Albert Lea Dump Terracon, February 14, 2002.
Subsurface Hydrologic Assessment Edgewater Park / Former Albert Lea Dump, Terracon, August 20 2002.
Albert Lea Lake Management Plan, Final Draft,
Section 206 Program, Preliminary Restoration Plan (PRP), Freeborn County Ecosystem Restoration. U.S. Army Corps of Engineers.
Lake Management Plan, Fisheries DNR, August 8, 2001.
Shell Rock River Watershed Proposed Action Goals Don Sorensen, 4/25/01
Vision for the Albert Lea Lake Ecosystem. Lake Restoration Committee, November 1999.
Freeborn County Comprehensive Water Plan, Revised for 1997 to 2005, March 9, 1998; Chapter 5 ~ Shell Rock River Watershed; and Part 1 ~ Physical Environment. Planning and Zoning Office, Freeborn County.
Proposal for the Restoration of Fountain Lake, Albert Lea, Minnesota. Clean-Flo Laboratories, Inc., March 30, 1979.
U.S. Environmental Protection Agency National Eutrophication Survey, Working Paper Series. Prepared by Pacific Northwest Environmental Research Laboratory with the cooperation of the Minnesota Pollution Control Agency and the Minnesota National Guard, October 1974.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 1-2
A Study of Albert Lea lake Watershed. National Biocentric, Inc. 1973.
Report on Investigation of Pollution in Albert Lea Lake and Watershed, Freeborn County. Prepared by Minnesota Department of Health in cooperation with Freeborn County Clean Water, Inc., June-September, 1962.
Note: Additional studies are documented in the text of this Plan, which was originally printed in the Freeborn County Comprehensive Water Management Plan.
The following studies were added during the Plan comment period and will be referenced by the District during projects: • Freeborn County Planning and Zoning. 1997. Albert Lea Lake Report: An Examination of Seven Possible Management Scenarios.
• Weir, Edward and Albert Lea Technical College. 1993. Lake Assessment, 1992, Albert Lea Lake.
• Weir, Edward and Albert Lea Technical College. 1993. Lake Assessment. 1992. Fountain Lake.
• Minnesota Pollution Control Agency. 2002. Regional Total Maximum Daily Load (TMDL) Evaluation of Fecal Coliform Impairments in the Lower Mississippi River Basin in Minnesota.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 1-3
2.0 Physical Environment, Land Use and Development
The structure of the following section includes a countywide perspective, followed by more detailed information for the Shell Rock River Watershed District.
2.1 PRECIPITATION
Freeborn County has one official observation station located at the Albert Lea Waste Water Treatment Plant. The average annual rainfall in Freeborn County is between 30 and 31 inches. Prior to 1992, Operation Rain Gauge, (Albert Lea Future Farmers of America, FFA), consisted of nine stations across the County that monitored the rainfall during the growing season, May - September. The average annual rainfall during the growing season, prior to 1992, was 20 inches. From 1992-1996, the average rainfall during the growing season increased to 22.42 inches. This was documented by a network of 23 Freeborn County volunteers.
In 1991, the South Central Minnesota Counties Comprehensive Water Planning Project. SCMCCWPP, Freeborn County along with 12 other counties, received a challenge grant from the Board of Water and Soil Resources, BWSR, to establish a 13 County rainfall monitoring network. Volunteer readers were recruited. Most of the volunteer monitoring stations are located near the corner of every township in all 13 counties. The volunteers report the daily rainfall readings monthly to their County SWCD. The data is then sent to the Water Resources Center at Mankato State University, WRC-MSU, where it is entered into the data base. County rainfall maps are then generated and distributed to the respective counties. The rainfall data is also forwarded to the State Climatologist office.
The rainfall data for the growing season is digitized at the Water Resources Center and then distributed monthly during the growing season to each of the 13 Counties. T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-1
The Albert Lea wastewater treatment plant records will be utilized and the state climatologist has historical county records also.
2.2 INFORMATION TECHNOLOGY
The entry into the "Information Age" has increased public awareness of issues and correspondingly their expectations of service from government. Internet, e-mail and electronic records have made a large amounts of detailed information available to every personal computer, PC, terminal.
The information dispersion allows people to be aware and active on local issues such as water quality, feedlots, lakes, rivers and watersheds, and the preservation of resources through such issues as recycling, waste disposal and public expenditures.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-2
2.3 GEOLOGY
2.3.1 County Setting
The following is a general discussion of the geology of Freeborn County and is based upon information in the Freeborn County Geologic Atlas, WRC-MSU, July 1991.
Geology of Freeborn County The characteristics of the present land surface in Freeborn County, including the topography and nature of surficial materials, are the result of the action of glacial ice and flowing water. The surficial materials are chiefly glacial deposits, collectively called drift, of the continental glaciers that covered Freeborn County during the last million years. The glaciers were centered over southern Canada and extended into southern Minnesota. These glaciers expanded and contracted several times and the interval between glacial episodes may have been sufficient to allow deep erosion and weathering of the drift and bedrock surfaces.
The glacial drift is composed mainly of glacial till, which is characterized by a matrix of sand, silt, and clay with scattered pebbles, cobbles, and some boulders. The drift deposits overlie the bedrock surface and range in thickness from less than 50 feet to over 200 feet. Before glaciation, erosion of the bedrock surface produced valleys on the bedrock surface, all of which are now filled with glacial drift. The nature of thickening and thinning of the glacial deposits is largely influenced by buried bedrock valley cuts.
Structural faulting and uplift is known to have occurred in Minnesota during Precambrian time. The tectonic activity that contributed to the Precambrian faulting is thought to have ceased before Cambrian time. This interpretation suggests that the Cambrian and Ordovician aged bedrock sediments were deposited on top of inactive Precambrian aged fault blocks, and assumes that individual bedrock formations are not deformed internally. For the purpose of this discussion, each bedrock unit is treated as a continuous layer and mapped accordingly.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-3
Bedrock Geologic History The geologic history of the bedrock that underlies Freeborn County is part of a sequence of Late Cambrian to Early Ordovician sedimentary rock which consists of three major rock types: sandstone, shale, and carbonates. The bedrock was deposited layer upon layer in shallow marine waters that flooded southern Minnesota about 500 million years ago. The ancient intruding sea followed a shallow depressional lowland, now called the Hollandale Embayment that extends into southern Minnesota from a larger basin to the south. In a shallow marine environment, the material that is transported by waters is sorted according to the weight and size of the individual particles. Because of different settling rates, coarse (heavy) materials are deposited in turbulent water while the finer (light weight) materials are transported by waves, currents, or winds and deposited in quiet waters.
The relationship between sandstone, shale, and carbonate deposits corresponds to a seaward gradation of sediment size. Sand is deposited along the turbulent shoreline environment, where it becomes cemented over time. Clay and silt are transported by wave and current action to a deeper, lower energy environment where they are deposited to form shale. Still farther off shore, where sand and clay are not transported by wave and current action, calcite is precipitated to form limestone.
The rise of sea level, during Late Cambrian time, resulted in a progressive overlap of sediment types. As the sea advanced landward, sandy beach deposits were overlain by offshore mud which was in turn overlain by carbonates. As a result, the advancing sea is recorded in bedrock layers by the sequence: sandstone overlain by shale overlain by carbonates. In Freeborn County, limestone forms the bedrock surface beneath the glacial drift. These limestones represent the youngest bedrock units that are underlain by progressively older shales and sandstones.
The lithologic character of the bedrock varies with such factors as sediment source, distance from he shoreline, depth of the water, and the transport agent (waves, currents, and winds). Generally however, the lithology of individual bedrock units is nearly uniform throughout Freeborn County rue to the continuous nature of the geological processes that formed them.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-4
Bedrock Units The following descriptions of the bedrock units that underlie Freeborn County are primarily derived from water well drillers' logs but supplemented by more detailed descriptions presented by Mossler (1987).
Cedar Valley. The Cedar Valley unit may exceed 300 feet in thickness. The Cedar Valley is primarily a carbonate rock, fine-grained limestone or dolomite with some shale and shaley units. The Cedar Valley limestone was deposited during the Devonian age on top of Ordovician age Maquoketa and Galena limestones. Its base marks a major erosional unconformity with the underlying bedrock units.
Maquoketa. The Maquoketa Group may be as thick as 80 feet. It is a carbonate unit, composed of limestone and dolomite that is often shaley or contains shale layers. The high shale content of the Maquoketa Group distinguishes it from the underlying Galena or the overlying Cedar Valley groups in water well drillers logs.
Galena. The Galena is recorded as thick as 300 feet. It is a carbonate unit that consists mostly of limestone and dolomite with some silty, sandy, and shaley units. During the Galena time period, carbonate rock forming processes dominated the sedimentary environment.
Decorah. The Decorah Formation is about 50 to 60 feet thick, and is primarily a uniforn1 bed of gray-green shale. The top and bottom of the Decorah shale consists of alternating layers of limestone and shale that mark the transition between the underlying Platteville limestone and overlying Galena limestone. The Decorah shale indicates a quiet water sedimentary environment, probably shallow water tidal flats.
Platteville-Glenwood. These composite formations are generally about 35 feet thick. The Platteville and Glenwood Formations are classified as separate bedrock formations based on major differences in lithologic characteristics. Each of the formations is very thin and difficult to separate at the scale used in atlas map production. For the purpose of this study, the Platteville
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-5
and Glenwood formations are treated as a single geologic unit and for convenience called the Platteville-Glenwood Formations. The Glenwood Formation is a 15 to 20 foot thick shaley unit that directly overlies the St. Peter sandstone. The Glenwood shale represents a low energy sedimentary environment, offshore from the beaches where the St. Peter sandstone was being deposited. The Platteville Formation is a 20 to 30 foot thick bed of limestone that contains thin shale partings at its top and base. The Platteville limestone represents a more seaward sedimentary environment of the Glenwood shale. The Platteville was probably deposited in a shallow marine environment, similar to the modem Bahamas bank.
St. Peter. The St. Peter Formation is varies from about 80 to 110 feet and is primarily a medium- grained pure quartz sandstone. The lower part of the St. Peter may contain beds with varying amounts of silt or shale. The St. Peter sandstone marks the advance of the Middle Ordovician Sea into southern Minnesota. The sandstone was deposited along the turbulent shoreline of the advancing sea. The St. Peter sandstone was deposited on top of the Prairie du Chien dolomite and its base marks a major erosional unconformity.
Prairie du Chien. The Prairie du Chien has been measured as thick as 350 feet. This bedrock group consists primarily of dolomite and sandy dolomite with some thin shale layers and a few units of quartz sandstone. The massive nature of the Prairie du Chien dolomite indicates a low- energy sedimentary environment where carbonate deposition was the dominant rock forming process. Carbonate deposits were terminated when the shallow sea retreated from the continent, exposing the Prairie du Chien dolomite to the forces of erosion. Consequently, the top of the Prairie du Chien Group represents a major erosional surface and its thickness may vary greatly from place to place.
Jordan. The Jordan Formation is generally about 80 feet thick and is characterized as a medium to coarse-grained quartzose sandstone. The base of the Jordan sandstone may contain minor amounts of shale. The Jordan sandstone indicates the return to a high-energy, near shore sedimentary environment, perhaps a beach.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-6
St. Lawrence. This bedrock formation is generally about 80 feet thick. The St. Lawrence may contain several rock types including dolomite, siltstone, shale, sandstone, and glauconite. It is usually characterized by layers of shale, siltstone, and dolomite. The dolomitic units of the St. Lawrence Formation would signify a low energy depositional environment; however, the interbedded clay, silt, and sand indicate an environment with fluctuating conditions.
Franconia. The Franconia is generally about 120 feet thick and is commonly characterized as a fine-grained, glauconitic sandstone. The upper part of the Franconia Formation may contain shale and dolomite layers that are similar to those found in the overlying St. Lawrence Formation. The fine-grained glauconitic sandstone suggests a low-energy sedimentary - environment. Glauconite forms on the sea floor in oxygen-poor water where the rate of sedimentation is very slow.
Ironton-Galesville. The Ironton-Galesville bedrock exceeds 60 feet in thickness, is generally characterized as a medium- to coarse-grained quartz sandstone. The Ironton and Galesville sandstones are classified as separate bedrock formations; however, both sandstone units are sources of groundwater. For the purpose of this plan, the Ironton and Galesville sandstones are treated as a single geologic unit and for convenience called the Ironton-Galesville sandstone.
The Ironton-Galesville sandstone may indicate the return to a higher energy near shore or beach environment of sedimentation.
Eau Claire. The Eau Claire may exceed 100 feet in thickness and consists primarily of shale and siltstone. Its contact with the underlying Mt. Simon sandstone is transitional. The fine- grained sediments of the Eau Claire Formation suggest a low energy environment of sedimentation, either relatively deep and quiet water, or shallow water tidal flats.
Mt. Simon. The Mt. Simon is the deepest bedrock unit discussed in this plan. Its' thickness is unknown but probably attains several hundred feet. The Mt. Simon is usually characterized as a medium- to coarse-grained quartzose sandstone, however, in Freeborn County the well drillers'
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-7
data for the Mt. Simon is sparse. The base of the Mt. Simon marks a major erosional surface with the underlying Precambrian age Hinckley sandstone. The Mt. Simon sandstone marks the advance of the Late Cambrian Sea into southern Minnesota.
Water Supply In Freeborn County, groundwater exists in unconsolidated glacial deposits and in the underlying bedrock. The possibility of developing adequate supplies of groundwater from the glacial deposits is generally poor. However, the bedrock aquifers are among the highest yielding in the United States. The groundwater supplies that are contained within the bedrock aquifers are adequate for present and foreseeable needs.
The following is a general discussion of the groundwater resources of Freeborn County. Specific information relating to unique groundwater characteristics of each watershed is discussed within each of the watershed sections of this Plan.
Bedrock Aquifers Groundwater can be obtained from four bedrock aquifer systems in Freeborn County. They are the Cedar Valley-Maquoketa-Galena aquifer system, the St. Peter-Prairie du Chien-Jordan aquifer system, the Franconia-Ironton-Galesville aquifer system and the Mt. Simon -Hinckley aquifer system. The data suggest that there is good hydraulic connection between the bedrock units within each of the four bedrock aquifer systems.
An aquifer is any geologic unit that is capable of storing and yielding fresh water in usable quantities. Groundwater is usually held in an aquifer, at significant pressure, by the presence of a confining bed above the aquifer. In most cases confined water is equivalent to artesian water. A flowing artesian well is a well that yields water at the land surface, under its own pressure, without pumping. In a non-flowing artesian well, the pressure is not sufficient to lift the groundwater above the land surface. In the bedrock aquifers that underlie Freeborn County, high groundwater pressure usually occurs in hydraulically isolated layers that are under high pressure.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-8
In bedrock aquifers that form the bedrock surface, high groundwater pressure is sometimes the result of continuous bedrock strata with recharge areas at higher elevations.
A bedrock aquifer system is a multiple aquifer system that is composed of two or more bedrock aquifers that act hydrologically as a single unit and are bound on the top and bottom by aquitards. Individual bedrock aquifers range from coarse-grained deposits such as sandstone to hard fractured sedimentary rocks such as limestone or dolomite.
In Freeborn County, most farm and domestic wells draw water from the uppermost bedrock aquifer that is locally available. Throughout most of Freeborn County the upper bedrock aquifer consists predominately of Cedar Valley -Maquoketa -Galena limestones. Wells that require high pumping capacity are often drilled through two or more bedrock aquifers.
Aquifer Characteristics of Sedimentary Rock Types The most favorable geological structure for groundwater accumulation is found in stratified sedimentary rock like that underlying Freeborn County. Sedimentary aquifers range from loose, coarse-grained deposits such as sandstone to hard fractured sedimentary rocks such as limestone or dolomite. A water bearing rock unit may vary locally in texture or composition; either vertically because of bedding planes, or horizontally because of changes in sediment type. The lithology of the individual sedimentary bedrock units is nearly uniform throughout Freeborn County due to the continuous nature of the geological processes that formed them.
Carbonate Aquifers. The carbonate aquifers are mostly composed of crystalline limestone and dolomite, with some quartz sand and shaley units. In carbonate rock, fractures along bedding planes and pores within the rock provide the primary routes for groundwater flow.
The permeability of carbonate rocks depends upon their porosity, which is primarily due to the enlargement of fractures and other openings by erosion through water circulation.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-9
The ability of dolomite to transmit water is usually lower than that of most limestone. The openings between the crystals in dolomite are small and the rate of erosion by solution is less than in limestone. Dolomite is a hard and very brittle rock which may have wide zones of fracturing that result in increased permeability. Limestone has a higher solubility than dolomite, which leads to more spacious fractures and much wider solution channels. Observations in quarries that are excavated in limestone or dolomite show that openings along bedding planes tend to remain open and transport water.
In Freeborn County, the Upper Carbonate Aquifer System generally consists of 3-4 bedrock units.
Shale & Siltstone Aquitards. Shale and siltstone are composed of fine-grained particles that constitute the finest of the clastic sedimentary materials. The effective porosity of shale and siltstone result in a much more reduced permeability than that found in sandstone and carbonate bedrock units. Consequently, siltstone and shale yield little Groundwater and function as aquitards in the sequence of bedrock sedimentary deposits. Although an aquitard may not yield water in usable quantities, it can hold appreciable amounts of water.
Sandstone Aquifers. The sandstone bedrock units transmit water from between individual grains. The ability of sandstone to transmit water depends upon the size and amount of pore space between individual sand grains. Pore space is mostly a function of the amount of cementation that is holding the sand grains together. The cementing material consists of very small particles that partly or entirely fill the voids between sand grains. The most common cementing materials are clay minerals, calcite, and quartz. The hydraulic properties of any sandstone, as a whole, can be variable because the cementation may be localized.
Aquifer Recharge and Discharge Sites Specific sites of either recharge or discharge have not been identified within the County. Recharge areas have been determined to be in the uplands as precipitation percolates through the
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-10
soil to the aquifers. Discharge then takes place in the major river basins, lakes and streams. This is evidenced by continued flow during periods of drought and low flow.
Geologic Sensitivity of the Cedar Valley -Maquoketa -Galena Aquifer System The three bedrock units that combine to form the Cedar Valley -Maquoketa -Galena aquifer system are the primary bedrock units from which most of the drinking water is pumped. In Freeborn County the Cedar Valley -Maquoketa -Galena aquifer system, is directly beneath the glacial drift. There is no bedrock aquitard of low permeability separating the aquifer system from the overlying glacial drift. Where the glacial drift is shallow, or where it consists of coarse textured material, the potential for the transfer of water soluble contaminates and a hazardous fluid is high. Shallow clay beds do not afford much more protection, and none at all if they are penetrated.
The Geologic Sensitivity Assessment Map, GSAM, indicates parts of Cedar Valley -Maquoketa - Galena aquifer system beneath the Cedar River and Shell Rock River Watersheds are sensitive.
Level of Confidence for the Geologic Sensitivity Assessment of the Glacial Drift When assessing aquifer sensitivity, the hydraulic conductivity of geologic materials that overlie an aquifer is of fundamental importance. The data used to describe the various units of the glacial drift came from individual water well drillers logs. This description of geologic materials included the main sediment type and the depth of these sediments. Most of the well drillers' logs were of sufficient accuracy to warrant their use. These well drillers generally do not have training in geology and based their description of the lithologic material upon an aquifer potential.
The construction of the GSAM came from the data points, (well drillers' logs), within that area. Where data points are dense, more confidence may be placed upon the positioning of these contour lines. Where data points are sparse, the positioning of the contour lines was base upon generalizations.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-11
Despite variations in drillers' lithologic descriptions and density of data points, this information is important and very useful.
Recent Information Regarding Freeborn County Bedrock Hydrogeology Interpretations The geologic information cited above was taken from the South Central Minnesota Groundwater Contamination Susceptibility Project-Continuation. (A regional Integration of Existing Data Utilizing GIS) Report to the Legislative Commission on Minnesota Resources. John Rongstad, and Cis Berg, 1995, and the Freeborn County Minnesota Geologic Atlas, Water Resources Center, Mankato State University, John Rongstad and Cis Berg, 1991.
Our understanding of hydrogeologic resources is continually evolving and is always subject to reinterpretation based upon new data. The following information was received from the DNR in November 1997 and should be viewed as new and evolving knowledge. It should be considered, along with the other geologic information in this Plan, when land uses that generate hazardous by-products are being proposed at geologically sensitive locations.
Freeborn County Bedrock Hydrogeology Interpretations Freeborn County’s groundwater supply comes from Wisconsinan age glacial deposits and the complex series of bedrock units beneath them. Traditionally these bedrock units have been lumped into large aquifer systems with confining units in between. These systems have been labeled the Upper Carbonate, (consisting of the Cedar Valley-Maquoketa-Galena), St. Peter- Prairie du Chien-Jordan, Franconia-Ironton-Galesville, and the Mt. Simon-Hinckley. The implicit assumption with these groupings is that these units function as one aquifer.
Recent work by state agency and University of Minnesota staff in southeastern Minnesota has questioned this interpretation. In the case of Freeborn County this is important particularly in regard to use and protection of the "Upper Carbonate aquifer".
In the case of the Upper Carbonate, interpretive work has been done in Mower County by the DNR-Division of Waters, Minnesota Geological Survey, and the University of Minnesota
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-12
Geology Department. Since the units under much of Freeborn County are similar, the finding in Mower County may hold true in Freeborn County.
The units present in the "Upper Carbonate" range from the Middle Devonian to Upper Ordovician age. Depending on how much of the Devonian sequence remains, the Upper Carbonate consists of two, three or four distinct aquifers. The sequence of aquifers and aquitards is as follows:
Upper Cedar Valley aquifer Chickasaw shale aquitard Lower Cedar Valley aquifer Pinicon Ridge aquitard Spillville-Maquoketa aquifer Dubuque aquitard Galena aquifer
Water chemistry sampling in Mower County and pumping test at Leroy, Minnesota, have given indications that the aquitards are providing separation between the aquifers. Whether this effect is regional or more localized has yet to be determined; the degree of separation depends on the thickness and lithologic nature of the aquitards.
Efforts should be undertaken to examine the characteristics of the Devonian and upper Ordovician units in Freeborn County. Also, where these units are covered by less than 50-75 feet of glacial material karst features, sinkholes may be found. This may indicate a potential for sinkhole development in portions of Freeborn County with similar geologic setting (See also, Mower County Geologic Atlas. Part A. Minnesota Geological Survey (in process); and, Karst Hydrogeology of Leroy Township. MGS Open File Report 97-2.)
Work by the Minnesota Geological Survey in Olmsted and Goodhue Counties has demonstrated that the St. Peter-Prairie du Chien-Jordan is unlikely to act as one aquifer. Significant sections of the Jordan are lithologically similar to aquitard units and likely provide separation between the Jordan and the overlying Prairie du Chien formations. Tritium age-dating in Fillmore County
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-13
seems to bear this out also. Only the quartzose facies of the Jordan, a medium to coarse-grained sandstone has shown to be a high yielding aquifer. (Goodhue County Geologic Atlas, Part A in process), and (MGS Open File Report 96~1, Bedrock Geology of Rochester Area, Olmsted County.)
The Freeborn County Surface Hydrology Atlas, Geologic Atlas and the GSAM are available for review at the County Planning and Zoning Office.
2.3.2 Shell Rock River Watershed District Setting
The primary source of drinking water beneath the Shell Rock River Watershed District is the Cedar Valley-Maquoketa-Galena aquifer system. In the northwestern part of the watershed, the Cedar Valley bedrock has eroded leaving Maquoketa bedrock as the upper most group of the aquifer system. The system has a general hydrologic gradient from northwest to southeast. This is consistent with the Hollandale Embayment.
The Cedar Valley-Maquoketa-Galena aquifer system is covered with unconsolidated surficial deposits, chiefly glacial drift; alluvial silts, sands, and gravel commonly present along streams. This glacial till generally ranges from 100 to 200 feet thick.
Beneath the surficial deposit of till, the Cedar Valley-Maquoketa-Galena aquifer system can extend to thickness of almost 700 feet. The Decorah Formation, a shale confining layer, separates the Cedar Valley-Maquoketa-Galena system from the underlying St. Peter-Prairie Du Chien-Jordan aquifer system. Still deeper are the Franconia-Ironton-Galesville aquifer system and the Mt. Simon-Hinckley Aquifer system. Each aquifer system is separated from the system above it by a confining layer, generally of shales or rocks of low permeability.
All of the aquifers under the Shell Rock River Watershed District are considered to have extensive reserves of potable water.
Geologically Sensitive Areas. The GSAM indicates that the watershed may be located on landscape with the depth of confining sediment described as Very High Sensitivity - 0 to 10 feet, High Sensitivity - 20 to 30 feet, and Moderately High Sensitivity - 40 to 50 feet deep are located in the Shell Rock River Watershed District.
These areas of geologic sensitivity may be located in the Townships of Pickerel Lake, Albert Lea, Hayward, Freeman and Shell Rock.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-14
2.4 SOILS
2.4.1 County Setting
The soils of Freeborn County are mostly deep and loamy. They formed most extensively in glacial till and less extensively in glacial outwash, lacustrine sediments, alluvium, and organic material. The different parent materials, topography, and native vegetation account for a large number of different kinds of soils in the County.
Although the temperature across the County is generally uniform, soils in the prairie regions are exposed to greater variations in temperature than those in the forest regions. This results in the formation of micro-climates throughout the landscape.
Fine- textured soils such as Lerdal and Minnetonka soils, warm up more slowly than moderately coarse-textured soils, such as Estherville and Dickinson soils, because the contain more moisture.
Dark-colored soils, such as Clarion and Nicollet soils, absorb more heat from the sunlight than the lighter-colored Hayden soils. Soils on south- and west-facing slopes receive more sunlight than soils on north- and east-facing slopes; therefore, they tend to be drier and warmer.
The interaction of all these factors affects the development of soils. During winter, soil-forming processes are largely dormant. Generally, the soils are frozen to a depth of two to three feet for four or five months of the year. The depth to which frost penetrates depends mostly on the quantity of snowfall late in fall or early in winter.
Soil Classification In January of 1980, Freeborn County published a soil survey of the County. The survey includes a general soil map of the County for broad land use planning and 13 broad soil descriptions. The broad classification is a detailed inventory of 64 different soils. The description includes
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-15
essential soil characteristics for the planning, use, and management of crops, pasture and hay, windbreaks and environmental plantings, wildlife habitat, recreation, engineering and soil properties. The 13 broad soil associations are found in four distinctive soil groups.
Group I - Soils Formed Mostly In Glacial Till On Uplands
These are nearly level to hilly and moderately steep, very poorly drained to well drained, upland soils formed mostly in medium and moderately fine textured glacial till. They formed under grass prairie and mixed deciduous trees and grass prairie. They presently are used for farming, wildlife, and homes. With good management, this group of soils has good potential for intensive farming. A few scattered areas of soils in deeper, broad depressions and steeper soils can be managed for wetland wildlife and upland game without seriously restricting the development of prime farmland. There are six soil associations in this group.
1. Webster-Canisteo-Cordova Association. This soil association is found on nearly level, poorly drained and very poorly drained, loamy soils formed mostly in moderately fine and medium textured glacial till on upland plains.
2. Webster-Clarion-Nicollet Association. The association is formed on nearly level to gently undulating, poorly drained to well drained, loamy soils formed in moderately fine and medium textured glacial till on upland plains.
3. Clarion-Webster Association. The association is nearly level to rolling, well drained and poorly drained, loamy soil formed in medium and moderately fine textured glacial till on upland plains and ground moraines.
4. Clarion- Webster-Storden Association. This association consists of nearly level to hilly, well drained and poorly drained, loamy soils formed in medium and moderately fine textured glacial till on end moraines.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-16
5. Lester-Webster-Glencoe Association. This is a nearly level to hilly, well drained, poorly drained, and very poorly drained loamy soil formed mostly in medium and moderately fine textured glacial till on end moraines.
6. Hamel-Kilkenny-Lerdal Association. This is a nearly level to moderately steep, poorly drained to well drained, loamy soils formed in medium and moderately fine textured glacial till and alluvial sediments on upland plains and ground moraines.
Group II - Soils Formed In Loess Mantled Glacial Till On Uplands
These nearly level to sloping, very poorly drained to well drained soils are on uplands. They formed in loess mantled, medium textured glacial till. They formed under grass prairie or mixed deciduous trees and grass prairie. The dominant use is intensive farming. A few scattered areas of deeper, broad depressions can be managed for wetland wildlife without seriously restricting the development of prime farmland. Three of the 13 soil associations are in this group.
7. Maxcreek-Merton Association. This is a nearly level, very poorly drained to moderately well drained, silty soils formed In loess mantled, medium textured glacial till on ground moraines.
8. Maxcreek-Blooming-Newry Association. This is a nearly level to gently sloping, very poorly drained to well drained silty soil formed in loess mantled, medium textured glacial till on ground and end moraines.
9. Maxfield-Skyberg Association. This is a nearly level, poorly drained and somewhat poorly drained, silty soil formed in loess mantled, medium textured glacial till on ground moraines.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-17
Group III - Soils Formed In Outwash Materials On Outwash Plains And Stream Terraces
These nearly level to sloping, poorly drained to well drained soils are on outwash plains and stream terraces. They formed in medium and moderately coarse textured materials over sands and sand and gravel under grass prairie. The present use is dominantly farming; some areas are used for wildlife and residential development. This group has good potential as a source of sand and gravel for construction materials. Three of the 13 soil associations are in this group.
10. Biscay-Mayer Association. This is a nearly level, poorly drained, loamy soils formed in medium textured sediments over coarse textured material on broad outwash flats and terraces
11. Dickinson-Estberville-Dakota Association. This is a nearly level to sloping well drained, loamy soils formed in moderately coarse textured and medium textured sediments over coarse textured material on outwash plains and stream terraces.
12. Marsban-Fairbaven Association. This is a nearly level and gently sloping, poorly drained and well drained silty and loamy soils formed In medium textured sediments over coarse textured material on outwash plains and stream terraces.
Group IV - Soils Formed In Organic Material And Loamy Sediments On Lake Plains And In Depressions On Uplands
These nearly level, very poorly drained soils formed in decomposed organic material and loamy sediments of till or lacustrine materials. Native vegetation was reeds and sedges. The dominant use is for truck crops. If properly managed these soils have good potential for this use, as well as for row crops commonly grown in the County. One soil association is in this group.
13. Palms-Muskego-Blue Earth Association. This is a nearly level, very poorly drained, muck and silty soils formed in organic material and loamy sediments in former lake basins and depressions on uplands.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-18
Broad Land-Use Considerations Cropland. The soils in Freeborn County vary widely in their potential for major land uses. Farming is the dominant enterprise in the County, and fortunately the major soils have good potential for cropland. Associations 1, 2, 7, and 9 are used intensively for growing row crops and are well suited to this use. Associations 3, 4, 5 and 6 are also well suited to growing crops, but management is needed to prevent erosion.
Woodland. Because of present conditions there is not much interest in woodland development. (Associations 5 and 6 have good potential for woodland.
Wildlife Habitat. Potential for wildlife habitat is good throughout the County. Wildlife habitat is most fully developed in associations 4, 5, 11, and 12, which have a variety of conditions and habitat types.
Urban. Only a small part of the County is classified as urban or built-up areas. Soil association 11 has the best potential for further urban development provided parts of included areas that are subject to flooding are avoided. Association 6 has been used for urban development. Associations 1, 2, 9, 10 and 13 have poor potential for all types of urban development.
Erosion Prone Soils In Freeborn County, erosion areas are scattered throughout the County, with a small concentration in the north central area. There is a 1 percent high erosion priority on shoreland and a 6.2 percent high erosion priority on other land. The County as a whole consists of 93.8 percent low erosion priority areas.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-19
2.4.2 Shell Rock River Watershed District Soils
Watershed Setting The predominate soils of the watershed were formed in glacial till on uplands. They consist primarily of the Lester-Webster-Glencoe association and the Hamel-Kilkenny-Lerdal association.
Lester-Webster-Glencoe Association. This is a nearly level to hilly, well drained, poorly drained, and very poorly drained loamy sells formed mostly in medium and moderately fine textured glacial till on end moraines.
Landscape. The landscape has a slightly irregular configuration and is one of hills and knolls, broad flats, drainage-ways, and depressions. Some hills are circular. Slopes are relatively short on the hills and knolls. Differences in elevation between the hills and depressions range mainly from 15 to 40 feet, but a few hills are 80 to 100 feet above the depressions. The natural drainage pattern is poorly developed.
Uses. This association makes up about 27 percent of the County. It is about 33 percent Lester soils, 20 percent Webster soils, 15 percent Glencoe soils, and 32 percent minor soils. It is used for row crops, hay, and pasture. Corn, soybeans, and alfalfa are the principal crops. A few areas are forested.
Limitations. The hazard of erosion is the dominant concern on the Lester soils, and wetness limits use on the Webster and Glencoe soils. Some areas do not have adequate outlets for drainage.
Hamel-Kilkenny-Lerdal Association. This is a nearly level to moderately steep, poorly drained to well drained, loamy soils formed in medium and moderately fine textured glacial till and alluvial sediments on upland plains and ground moraines.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-20
Landscape. The landscape has a mostly smooth configuration and is one of convex hills and concave upper parts of drainage-ways and depressions. Slopes are complex in a few areas. Differences in elevation between the hills and depressions range mainly from 10 to 30 feet, but the range in places is as much as 50 feet. The natural drainage pattern is poorly developed.
Uses. This association makes up about 8 percent of the County. It is about 25 percent Hamel soils, 17 percent Kilkenny soils, 15 percent Lerdal soils, and 43 percent minor soils. It is used for row crops and hay. Corn, soybeans, and alfalfa are the principal crops. A few tracts are used for pasture and woodland, and a few others are used for residential and industrial development.
Limitations. The main management needs for crop production are erosion control, drainage, and maintenance of tilth. Some areas do not have adequate outlets for drainage.
Reflecting the drainage patterns formed in the outwash materials on outwash plains and river terraces are the Dickenson-Estherville-Dakota association, and the Palms-Muskego-Blue Earth association.
Dickinson-Estherville-Dakota Association. This is a nearly level to sloping well drained, loamy soils formed in moderately coarse textured and medium textured sediments over coarse textured material on outwash plains and stream terraces.
Landscape. The landscape is mainly one of broad flats, knolls, and ridges. Slopes are mostly simple but are convex in places.-Differences in elevation between drainage-ways and the knolls and ridges range from 5 to 30 feet.
Uses. This association makes up about 7 percent of the County. It is about 24 percent Dickinson soils, 22 percent Estherville soils, 17 percent Dakota soils, and 37 percent minor soils. It is used mostly for row crops, hay, and pasture. Some areas are used for
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-21
wildlife and residential development, and others are used as a source of sand and gravel for construction materials. The dominant crops are corn, soybeans, oats, and alfalfa.
Limitations. The hazard of erosion is the dominant management concern on the more sloping soils. In addition, crop production is limited in some years because most soils have a low to moderate available water capacity.
This association probably has the best potential for community development. However, the very poorly drained and poorly drained, included soils subject to flooding need to be avoided.
Palms-Muskego-Blue Earth Association. This is a nearly level, very poorly drained, muck and silty soils formed in organic material and loamy sediments in former lake basins and depressions on uplands.
Landscape. The basins and depressions filled with mineral sediments. Later, in most places, organic material accumulated over the sediments.
Uses. This association makes up about 5 percent of the County. It is about 45 percent Palms soils, about 20 percent Muskego soils, about 15 percent Blue Earth soils, and 20 percent minor soils. It has been developed and used extensively for truck crops and row crops commonly grown in the County. A few areas remain in native vegetation and are used for wildlife.
Limitations. Wetness and flooding are major limitations that are being overcome by extensive development. The area is known as unique for its truck crops.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-22
2.5 ORIGINAL VEGETATION
2.5.1 County Setting
Two types of original vegetation, forest and prairie, have strongly influenced the formation of soils in Freeborn County. In the northwestern part of the County, the original vegetation was mainly of Grassland consisting of Prairie, Wet Prairies, Marshes and Sloughs. Dominant plants included Marsh-grasses, Flags, Reeds, Rushes, Wild Rice with Willow and Alder brush in places. The eastern part of the County was dominated by Open Muskeg, (floating bogs), with Mosses, Rushes, Marsh-grasses, Alder brush and scattered small Tamarack. This landscape was broken and interspersed with areas of Grassland made up of Prairie and Wet Prairie vegetation. The remainder of the County, the western and central areas, consisted of brushland. The description of brushland vegetation includes Oak Openings and Barrens, scattered trees and groves of oaks, (mainly Bur Oak), of scrubby form with some brush, thickets and pines.
Pioneer settlers and many early scholars believed that the prairies of the County resulted from fire. No doubt, this was a modifying factor at the edge of the forest, but generally the dominant vegetation is that which is best suited to the climate and soils.
2.5.2 Shell Rock Watershed Original Vegetation
Watershed Setting The majority of original vegetation of the Shell Rock Watershed was mainly of oak woodland and brushland. Prairie Wetland was the second dominate type, and Upland Prairie made up the remainder of the watershed.
Oak Woodland and Brushland. The oak woodland and brushland was a common ecotonal type between the prairie and deciduous forest. Fire, more than landform type or climate, was the significant factor influencing the position and extent of this community.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-23
The oak woodland and brushland vegetation type has often been referred to as savanna. However, in Minnesota the image of a tallgrass prairie dotted with trees to create an orchard-like appearance is more myth than fact. Careful study of the original public land survey records has led to a new interpretation.
The oak woodland and brushland ranged from small groves of trees intermixed with open prairie to a chaparral like community of scrub forest and dense shrub thicket. The structure of the community was largely determined by soil conditions and fire frequency. The oaks, especially bur oak and northern pin oak, were the dominant trees. In the southeast, white oak and black oak were also common.
Upland Prairie and Prairie Wetland. Tallgrass prairie, at the time of the public land survey in the 1850s, covered one-third of the state. It occupied a wide variety of landforms, including beach ridges and swales, glacial lake beds, morainic hills, steep bluffs, and rolling till plains.
Along these landforms, important differences occurred in the plants and animals that compose the prairie ecosystem. The most striking indicator is the predictable change in dominance of a few major prairie grasses. The distribution pattern of these grasses coincides with differences in soil moisture levels related to topography.
In general, prairie cordgrass and bluejoint dominate the wet lowlands; big bluestem and Indian grass occupy the deep fertile soils of the moist uplands; and little bluestem and sideoats grama occur on the thin soils of dry uplands.
Throughout the prairie biome, numerous wetland communities dominated by sedges and rushes, rather than grasses, were interspersed with upland prairie. The glacial moraine landforms of the prairie region were ideally suited for wetland formation; their hilly knob and kettle-type topography abounded with prairie pothole marshes.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-24
2.6 TOPOGRAPHIC RELIEF OF WATERSHEDS
2.6.1 County Setting
The relief of Freeborn County is the product of a back-wasting continental glacier. The glacial drift that was deposited was of such thickness that the underlying rock strata have had little effect on the surface relief. The relief ranges from nearly level on the lake plain and on ground moraines to rolling where the end moraines form a complex pattern. In areas where there were scattered ice block depressions, a few large lakes formed. There are many small depressions that formed ponds and wetlands.
Most of the surface of Freeborn County is nearly level or gently undulating. Small hilly areas are in parts of two moraine belts, the Altamont/ Algona Moraine and the Bemis Moraine, that cross the County from north to south. The most rugged tracts are in section 16 in Newry Township and in sections1 and 2 in Pickerel Lake Township, where the hills rise from 50 to 100 feet.
A number of depressions, which lie below the regional water level, are filled by lakes that tend to be marshy around the margins. The greater part of the County is drained southeastward through the Shell Rock and Cedar Rivers. The northwestern part of the County drains to the Minnesota River via the Le Sueur and Blue Earth River basins.
The southeastern comer of the County lies beyond the eastern margin of the Wisconsin drift sheet and shows more mature erosional topography. The extremes of altitude for the County as a whole are between 1,150 feet above sea level in the northwestern comer and about 1,280 feet above sea level in the central part of the County. The average altitude of the County is about 1,250 feet above sea level.
Freeborn County has six major watersheds and 74 minor watersheds shaping the topographic relief. The following table shows that the Shell Rock River Watershed District is the largest watershed, covering 34 percent of the landscape; the Cedar River Watershed is second, covering
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-25
33 percent, and the Le Sueur River Watershed covers 15 percent of the landscape. These three watersheds cover 82 percent of the County. Maps of boundaries and the flow directions of watershed units are shown in the Freeborn County Surface Hydrology Atlas.
Major Watersheds Minor Watersheds Square Miles County Coverage
Shell Rock River #49 18 246 34% Cedar River #48 4 235 33 % LeSueur River #32 12 108 15% Winnebago River #50 6 71 10 % Blue Earth River #30 10 50 7 % Cannon River #39 4 13 <1 %
2.6.2 Shell Rock River Watershed District Topographic Relief
There are 18 minor watersheds located in that part of the Shell Rock River Watershed in Freeborn County. These minor watersheds cover a total area of 246.05 square miles in Minnesota. The entire watershed is located within the County. The total area of the Shell Rock River Watershed located with in the County is approximately 35% of the land area of the County.
Minor Location Area Order ID # Outlet Stream Name Twp Rng Sec Total Cnty Sq. Mi. 49001 Bancroft Creek (County Ditch 65) 103 21 16 15.89 15.89 1 49002 County Ditch 65 103 21 16 07.18 07.18 1 49003 Shell Rock River 102 21 25 25.12 25.12 3 (Albert Lea Lake Outlet) 49004 County Ditch 32 102 20 17 10.44 10.44 1 49005 Peter Lund Creek 102 20 07 17.88 17.88 2 49006 Creek to Shell Rock River 101 20 08 08.35 08.35 1 49007 Shell Rock River 101 20 18 13.64 13.64 3 49008 County Ditch 16 101 20 18 15.83 15.83 1
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-26
Minor Location Area Order ID # Outlet Stream Name Twp Rng Sec Total Cnty Sq. Mi.
49009 Shell Rock River 101 20 31 08.73 08.73 3 49010 Shell Rock River Iowa 02.91* 02.91 3 49011 Goose Creek (County Ditch 55) 101 20 31 26.90* 26.90 2 49012 Bancroft Creek 102 21 05 19.86 19.86 2 49013 Shell Rock River 102 21 06 08.31 08.31 2 49014 County Ditch 77 103 22 27 15.94 15.94 1 49015 Armstrong Creek (Cnty Ditch 77) 103 22 26 10.37 10.37 2 49016 Creek to Shell Rock River 102 21 08 17.74 17 74 1 49017 County Ditch 55 101 21 36 09.86 09.86 1 49018 County Ditch 17 101 21 35 11.10* 11.10 1 246.05 246.05
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-27
2.7 EXISTING LAND USE
2.7.1 County Setting
Freeborn County is in the south-central part of Minnesota. The County has a population of 33,060 and a total land area of 449,280 acres, or 702 square miles, and approximately 21,000 acres of water. Albert Lea, the County seat, has a population of 18,310.
Farming is the principal business in the County. Corn, soybeans, small grain, and hay are the main crops. Some areas are used for growing vegetables such as potatoes, asparagus, onions, and sweet corn. Beef, dairy cattle, and swine are the main livestock raised. Land use within the County is as follows:
Cultivated 78.1 % Pasture and Open Space 15.1% Water 2.4% Forested 1.2% Urban Residential 0.8% Other Urban 1.6% Marsh 0.7% Transportation 0.1 %
The Freeborn County Existing Land Use Map is available for review at the County Planning and Zoning Office.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-28
2.7.2 Shell Rock River Watershed District Existing Land Use
POPULATION SHELL ROCK RIVER WATERSHED DISTRICT 1995 1990 City Population Households Population Households Albert Lea City 18,207 7,619 18,310 7,533 Glenville City 783 305 778 300 Hayward City 236 100 246 103 Manchester City 77 34 69 29 Twin Lake City 142 64 154 69 Total 19,445 8,122 19,557 8,034
Township Population Households Population Households Albert Lea Township 915 366 964 373 Bancroft Township 1,075 384 1,086 383 Freeman Township 552 198 554 198 Hayward Township 447 161 459 163 Manchester Township 478 177 483 176 Pickerel Lake Township 724 253 715 247 Shell Rock Township 464 173 476 177 Total 4,655 1,712 4,737 1,717
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-29
2.8 PUBLIC UTILITIES
2.8.1 County Setting
Freeborn County has 14 municipalities, 14 villages, 20 townships and two watershed districts. Three municipalities do not have sanitary wastewater treatment systems and four do not have storm water systems. Of the 14 villages, one village with ISTS has a shared drain field system. One village in the Turtle Creek Watershed District has shared wells, and sanitary wastewater and storm water treatment systems.
"Inflow/infiltration problem" is a term used to indicate that there are interconnections between the storm water sewer system and the sanitary sewer system. This problem is found in many older systems that have developed leaks over the years; in systems that were constructed of, or extension of, field tile systems; and, in communities where gutters and/or sump pumps were connected to sanitary systems instead of storm water system. The term "inflow/infiltration problems" does not mean that community intentionally connected the two systems.
The records do not indicate where this information was obtained, but it is thought that it may be from the results of an informal survey of city engineers and city clerks in 1988-1989.
2.8.2 Shell Rock River Watershed District Public Utilities
2.8.2.1 Incorporated Cities
Albert Lea. Albert Lea is located in Albert Lea and Bancroft Townships. According to the 1990 census, the population is 18,310. The town has four municipal wells. Abandon wells have also been identified. The sanitary system includes an activated sludge system that discharges to the Shell Rock River. According WRC-MSU Inventory Item # 13, the storm sewer system has infiltration/inflow problems, (See the infiltration/inflow discussion on page 31 of Part II). The receiving waters for the storm sewer system are Fountain and Albert Lea Lakes.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-30
Glenville. Glenville is located in Shell Rock Township. According to the 1990 census, the population is 778. The town has two municipal wells. The status of abandon wells is not known. The sanitary system includes a stabilization pond that discharges through County Ditch 16 to the Shell Rock River. According WRC-MSU Inventory Item # 13, the storm sewer system has infiltration/inflow problems, (see the infiltration/inflow discussion on page 31 of Part II). The receiving water for the storm sewer system is the Shell Rock River.
Hayward. Hayward is located in Hayward Township. According to the 1990 census, the population is 246. The town has two municipal wells. The status of abandon wells is not known The sanitary system includes a stabilization pond that is land applied. According WRC-MSU Inventory Item # 13, the storm sewer system has infiltration/inflow problems. The receiving water for the storm sewer system is through County Ditch 32 to Albert Lea Lake.
Manchester. Manchester is located in Manchester Township. According to the 1990 census, the population was 69. The community has a municipal well, but no other public utilities. The status of abandon wells is not known.
Twin Lakes. Twin Lakes is located in Nunda Township. According to the 1990 census, the population is 154. The town has two municipal wells. The status of abandon wells is not known. The sanitary system includes a stabilization pond that discharges to Goose Creek. There is no storm sewer system
2.8.2.2 Unincorporated Villages
Armstrong. Armstrong is located in Pickerel Lake Township. According to the 1980 census, the population of the village was 50. The community has no public utilities. The status of abandon wells is not known.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-31
Gordonsville. Gordonsville is located in Shell Rock Township. According to the 1980 census, the population at that time was 140. The village has no public utilities. The status of abandon wells is not known.
Assessment. The Villages of Armstrong and Gordonsville do not have any public utilities and the villages are located in townships that have geologically sensitive areas. Potential pollution issues should be addressed consistent with the resources available and the availability of grant funds.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-32
2.9 LAND OWNERSHIP
2.9.1 County Setting
Organization Freeborn County, 702 square miles in area, was organized on March 3, 1857. It has 14 incorporated municipalities, 20 townships, 14 villages, two watershed districts, and five independent consolidated school districts. The park system includes 254 acres of parks and public recreation land. Albert Lea is the County seat.
Population The County population reflects the declining trend of most other southern Minnesota counties. From 1980 -1995, the overall population of the County decreased approximately 10 percent. This trend appears to have slowed. From 1990 -1995 the decrease was .09 percent.
1980 population -36,329 Households 1990 population -33,060 Households -13,029 1995 population -32,759 Households -13,114
Transportation Systems The highway systems serving the County also reflect public ownership.
County-State Aid Highway System The County-state aid highway system totals 448 miles. This includes 26 miles of paved roads; 355 miles of bituminous highway and 67 miles of gravel roads.
County Road System The county road system totals 186 miles. This includes 14 miles of bituminous roadway and 172 miles of gravel roads.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-33
Interstate Highway-Systems The interstate highway-systems total 119 miles. This includes 25 miles of Interstate Highway No. 35; 31 miles of Interstate Highway No. 90, and 63 miles of other trunk highways.
Federal Government Ownership Public Land Ownership by the federal government is 720 acres. This includes 680 acres held by the U. S. Fish and Wildlife Service, and 40 acres of other federal lands.
State of Minnesota Ownership Public ownership by the state agencies is 3,340 acres. (State Planning, Land Information Center data.)
The Department of Natural Resources owns 3,220 acres: 720 acres of wildlife management areas, 500 acres of waterfowl production, 80 acres of public access, 1,840 acres of parks and recreation lands and 80 acres for enforcement purposes.
The Minnesota Department of Transportation owns 280 acres. This includes 120 acres of rest areas; 40 acres of maintenance and storage areas and 120 acres of gravel pits.
Land owned for military affairs totals 40 acres.
2.9.2 Shell Rock River Watershed District Land Ownership
Maps. The maps showing the location of federal, state, local, and Indian tribal lands are available for review in the County Planning and Zoning Office.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-34
2.10 SURFACE WATER QUANTITY
2.10.1 County Setting
Freeborn County's ground and surface water use is concentrated in the fourteen urban areas and evenly distributed through the rural districts. Surface water serves a variety of functions, including, but not limited to the following uses: recreation, agricultural irrigation, livestock watering, wildlife habitat, aquifer recharge, commercial and industrial processes, and dust control.
Lakes There are 49 lakes within the County, covering 20,852 acres of area. Surface water supply for the County is adequate. DNR protected waters within the County consist of 21 lake basins, 33 water sources and 18 wetland basins. Over half of these basins listed are affected by artificial drainage systems.
Lakes Classified by Size
Acres Lakes Lakes Affected by Drainage or Dry Lakes
10-25 5 3 25-50 8 5 50-75 4 3 75-100 6 3 100-125 4 2 125-150 1 1 150-200 5 3 200-500 5 3 500-1000 4 1 1000-2500 2 2500-5000 2 1
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-35
Altered Lake Levels Two large lake basins in the center of the County, Fountain and Albert Lea lake basins, were formed from remnant glacial ice blocks left in the post glacial till-filled valley. A mill dam was constructed across the Shell Rock River in the mid-1800's to further fill Fountain Lake. This dam was destroyed in the late 1880's, and a new dam was built in the early 1900's to maintain Fountain Lake for recreational purposes.
Ordinary High Water Marks The boundary of protected waters and wetlands, for regulatory purposes, is defined by the Ordinary Highway Water Mark, OHWM. The OHWM is the elevation delineating the highest water level which has been maintained for a sufficient period of time to leave evidence upon the landscape. Generally, it is the point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial.
Freeborn County has five lakes with established ordinary high water marks. These lake basins were formed originally from ice blocks in glacial till or in till and outwash. Three of the lakes are in the Shell Rock River Watershed District, one in the Winnebago Watershed and one in the Cedar River Watershed.
Protected River Flows The Le Sueur and Shell Rock Rivers both have protected flows. In addition, the Le Sueur River has a United States Geological Survey, USGS, gauge station. Sufficient information is not available to summarize stream flow with any consistency.
Surface Water Appropriation DNR regulates water appropriations. According to DNR 1997 permit records, there are 24 permits allowing surface water appropriation in Freeborn County. Two are in the Cedar River Watershed; one is in the Le Sueur River Watershed; four are in the Winnebago River Watershed; and, 17 are in the Shell Rock River Watershed District.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-36
2.10.2 Shell Rock River Watershed District Surface Water Quantity
High, Mean and Low Flow on Streams. There is no information relating to stream flow in the Shell Rock River Watershed District.
Established Ordinary High Water Mark. The Shell Rock River Watershed District has three lakes with established ordinary high water marks:
Lake Elevation OHW/NOHW Source Goose (E) 1218.7 NGVD -1929 OHW Report 2 - 12 - 81 Goose (W) 1216.3 NGVD -1929 OHW Report 2 - 12 - 81 Lower Twin 1258.3 NGVD -1929 OHW Report 2 - 05 - 80
Permitted Withdrawals From Lakes and Streams. There are 17 surface water appropriation permits in the Shell Rock River Watershed District. They are located in Shell Rock, Freeman, Albert Lea and Bancroft Townships. The following is a list of surface water appropriations approved by the DNR in the Shell Rock River Watershed District:
Township Watershed Source Use Acres Active Shell Rock Shell Rock Shell Rock R. Irrigation 20 No Shell Rock Shell Rock Gravel Pit Irrigation 40 No Shell Rock Shell Rock Gravel Pit Irrigation 40 No Shell Rock Shell Rock CD 16 Irrigation 80 No Shell Rock Shell Rock Shell Rock R. Irrigation 100 No Shell Rock Shell Rock Shell Rock R. Irrigation 80 No Freeman Shell Rock Gravel Pit Irrigation 55 No Freeman Shell Rock Creek Other 0 Yes Albert Lea Shell Rock Fountain Lake Golf 1 Yes Albert Lea Shell Rock Fountain Lake Golf 4 Yes Albert Lea Shell Rock Unknown Industrial 0 Yes Albert Lea Shell Rock Unknown Industrial 0 Yes Albert Lea Shell Rock Unknown Industrial 0 Yes Albert Lea Shell Rock Shell Rock R. Irrigation 100 No Albert Lea Shell Rock Shell Rock R. Irrigation 60 No Bancroft Shell Rock Shell Rock R. Industrial 0 Yes Bancroft Shell Rock Pond Industrial 0 Yes
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-37
Established State Protected Levels or Flows of Lakes and Streams. The Shell Rock River has a protected flow. There is not enough information to summarize flows with any accuracy.
Flowage Impoundment. The following is a list of dams that affect flowage:
Dam Name Nearest City Owner Hazard Permit 360 Fountain Lake Albert Lea Albert Lea 2 413 Pestorious Pond Albert Lea G. Pestorious 3
Known Water Use Conflicts. There have been no reported surface water use conflicts since the inception of County water planning.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-38
2.11 SURFACE WATER QUALITY
2.11.1 County Setting
1992 NPS Survey of Resource Managers This MPCA report is a summary of "successive surveys of local resource managers", (organizations not cited). The report listed 18 of the County's lakes and one river as impaired. Two lakes in the Blue Earth River Watershed; four lakes in the Le Sueur River Watershed; one lake in the Cannon River watershed; eleven lakes and one stream in the Shell Rock River Watershed District. Details are discussed within the watershed.
MPCA Stream Water Quality Assessment -1994 -305(b) Report to the Congress This report covers data October 1, 1983 through September 30,1993. Only one stream, a 9.8-mile reach of the Shell Rock River, is reported on.
MPCA Lake Water Quality Assessment -1994 -305(b) Report to the Congress This report covers lakes, one in the Cedar River Watershed; nine in the Shell Rock River Watershed District; one in the Winnebago River Watershed; one in the Blue Earth River Watershed; and, four in the Le Sueur River Watershed. All of the lakes are listed as impaired and together they total 10,694 acres of impaired surface water. Details of the survey are discussed within the watershed.
MPCA Lake Water Quality Assessment Data –1996 MPCA monitors some lakes in the state as ecoregion reference lakes or other for specific lake assessment projects. This report updates the data is presented in the 1990 Minnesota Lake Water Quality Assessment Report. The report covers seven County lakes. Three lakes are in the Shell Rock River Watershed District; one lake in the Cedar River Watershed; one lake in the Le Sueur River Watershed and one lake in the Winnebago River Watershed. Details of the survey are discussed within the watershed.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-39
NPDES Permits A total of 21 permits were in effect on October 31, 1996 in Freeborn County. Fourteen permits cover domestic water supplies; four permits for industrial discharges; two permits for water treatment plants; and, one permit for no discharge closed circuit cooling system. Thirteen permits are located in the Shell Rock River Watershed District; two permits in the Cedar River Watershed; two in the Le Sueur River Watershed; two in the Winnebago River Watershed; one in the Blue Earth River Watershed; and, one in the Cannon River Watershed. Details of the permits are discussed within the applicable watershed.
Surface Water Assessment Freeborn County has lakes, rivers, and a ditch system that are used regularly by the public. The protection of these water bodies is an important issue. The surface water, lakes and ponds of the County are hypereutrophic. This is typical for other lakes in the Western Corn Belt Ecoregion. Water quality is affected by summer algal blooms, and secci disc measurements are generally less than two feet. However, no public health concerns have been expressed by federal or state agencies dealing in surface water quality.
Freeborn County is actively taking steps to prevent surface water degradation. If surface water quality were increased, tourism and economic growth would follow. Tourism appears to have minimal effects on surface water quality.
Chemical analysis of Freeborn County's lakes indicates that high level of phosphorus contributing to the algal blooms found in these lakes.
The MPCA is requested to continue to upgrade monitoring sites within Freeborn County on all rivers and lakes. Assistance will be sought through the Citizens Lake Monitoring Program, the Lake Assessment Program, and the Clean Water Partnership Program.
Protected levels and flows should be established for all lakes and rivers in the County. An impact of appropriations and an establishment of desirable water levels would result. Currently no
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-40
evidence exists to suggest that the quantity of surface water available within Freeborn County will limit immediate or future lake uses. High water levels resulting from land use actions are not evident. Surface water quantity has historically remained stable. Annual precipitation received will allow or restrict current water uses in Freeborn County.
The Mulla report points out that erosional factors play an important part in water quality. Agricultural Best Management Practices, BMPs, should be encouraged and demonstrated whenever possible.
The MPCA reviewer of this plan noted that since Freeborn County is a headwater County, and that no water drains into the County, "a comprehensive surface water monitoring plan has the potential to show you where your protection and restoration efforts may be most needed."
2.11.2 Shell Rock River Watershed District Surface Water Quality
State Water Quality Management Use Classification of Streams and Lakes. The use classification of streams and lakes in Freeborn County is found in Minnesota Rules, Chapter 7050, and is available for review at the County Planning and Zoning Office.
Lake and Stream Water Quality Monitoring Data and Informal Information. The following information is derived from various studies, reports, and informal surveys.
Shell Rock River A summary of water quality data, 1977-1978, indicates that the Shell Rock River (9.8 miles long) exceeds the reach standard for fecal coliform, dissolved oxygen, turbidity, and maximum phosphorus. The City of Albert Lea built a 12 million gallon/day waste water treatment plant in 1983. This facility is permitted to operate at 5 million gallons/day and discharges into the Shell Rock River. Individual on-site sewage treatment systems, ISTS, along the Shell Rock River are brought into conformance as non-complying ISTS are identified. In the Fall of 1989, 10 miles of the Shell Rock River were cleaned of debris by the DNR.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-41
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of the river was impaired as a result of oxygen depletion, eutrophication, bottom sedimentation, toxicity due to pesticides, dissolved metals, and turbidity.
The survey attributed the source of the degradation of water quality to non irrigated crop production, pasture land, agricultural chemicals application, urban surface and storm water runoff, waste water disposal, industrial land treatment, failing individual sewage treatment systems, hydrologic modification by flow modification, and other unknown sources. Current use is limited to poor fishing as is the potential future uses.
1994 MN 305b Report to Congress Stream Water Quality. The Shell Rock River was the only stream reported on. In general, the report stated that the river was not supporting the following uses: aquatic life use, swimming use, and wildlife use. The only use that was fully supported was industrial uses.
The primary cause of impairment to river is attributed to high/low phosphorus. Other factors include ammonia-nitrogen, fecal coliform, nutrients, the biological oxygen demand, suspended solids, and turbidity. Non-point source pollution appears to be the source of the river problems.
Albert Lea Lake
Albert Lea Lake covers 2,654 acres. Almost all of the past reports contain abundant information about Albert Lea Lake’s poor water quality. Land use practices, industrial discharges, sanitary sewer systems, and some sewage discharges contaminated the lake. Almost no sport fishing was done there due to the poor water quality. However, in recent years, sport fishing has improved in the channel between the lakes.
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of the lake was impaired as a result of oxygen
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-42
depletion, eutrophication, bottom sedimentation, toxicity due to pesticides, dissolved metals, and turbidity.
The survey attributed the source of the degradation of water quality to non irrigated crop production, pasture land, agricultural chemicals application, urban surface and storm water runoff, waste water disposal, industrial land treatment and failing individual sewage treatment systems. Current use is limited to poor fishing and potential future uses.
1992 Lake Assessment Project In 1992, an MPCA and Local Citizens Lake Assessment Project was conducted on Albert Lea Lake. The goal of the study was to assess the lake nine years after the upgrade of the City of Albert Lea waste water treatment plant. The results indicated that there had been a slight improvement since the upgrade, but overall, the water quality of lake was poorer than other similar lakes of the eco-region. The mean summer concentrations were as follows:
Phosphorous 230 ppb Chlorophyll-a 125 ppb Secci Disk 1.2 feet / 0,4 meter
Despite the improvement in the waste water treatment, the water quality problem persist because of the size of the lake shed, 89,500 acres, and the shallowness of the lake with a mean depth of 3.5 feet.
1994 MN 305b Report to Congress Lake Water Quality. This report states that the Albert Lea Lake, based upon monitoring, is an impaired lake.
Minnesota Lake Water Quality Assessment Data Base 1996. This data base includes monitoring of Albert Lea Lake from 1985 to 1995. The information is presented as “Summer Mean Water Quality”. The lake covers an area of 2453 acres and has a maximum depth of 6 feet and a mean depth of 4 feet. The lake had a TSI average of 77 and an Ecoregion lake rank of 24.
Phosphorus 202 ppb /12* TSI 81** Eco-Rank >36%*** Chlorophyll 125 ppb/12 TSI 78 Eco-Rank >17% Secci Disk 0.4 meters/105 TSI 73 Eco-Rank >30%
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-43
Notes: * Total number of measurements. ** Carlson’s Trophic State Index. *** Indicates that the water quality parameter was less than 30 percent of all assessed lakes in the Western Corn Belt Plains Ecoregion.
University of Minnesota Limnological Research Center 1996 Report: This reports discusses sediment core sampling and analysis taken from each of the three basins of the lake. Analysis protocol included Magnetic Susceptibility and Pollen Analysis. Included in the Pollen Analysis protocol was examination of sediment horizons, texture and color.
The sediment study made the following conclusion: “Albert Lea Lake has been a shallow water body for several hundred years and probably has been shallow for at least the past 5000 years. The sediment accumulation over the past 150 years since the inception of European settlement and agriculture is approximately 50 cm at the deepest water locations and considerably less in shallower locations.
Chapeau (White) Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of White Lake was impaired as a result of oxygen depletion, eutrophication, and turbidity.
The survey attributed the source of the degradation of water quality to agricultural chemicals application, livestock holding and management areas, urban surface water runoff and failing individual sewage treatment systems. Current use is limited as are potential future uses.
Church Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of Church Lake, covering 75 acres, was impaired as a result of, bottom sedimentation and turbidity. The survey attributed the source of the
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-44 degradation of water quality to non irrigated crop production and agricultural chemicals application. Current use is limited as is potential future uses.
1994 MN 305b Report to Congress Lake Water Quality. This report states that Church Lake, based upon survey, is an impaired lake.
Eberhart Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of Eberhart Lake was impaired as a result of bottom sedimentation, and toxicity due to pesticides and dissolved metals.
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current and potential future uses are limited.
1994 MN 305b Report to Congress Lake Water Quality. This report states that the Eberhart Lake, based upon survey, is an impaired lake.
Fountain Lake
Fountain Lake, 530 acres, is located within the City of Albert Lea and its shoreline is almost totally developed. A 1982 survey reported “considerable silting from inlet creeks, domestic and industrial wastes reported”. Siltation and erosion from speedboats was also cited. A large rough fish populations created lake turbidity problems.
1994 MN 305b Report to Congress Lake Water Quality. This report states that the Fountain Lake, based upon monitoring, is an impaired lake.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-45
Minnesota Lakes Water Quality Assessment Data Base 1996. This data base includes monitoring of Fountain Lake from 1985 to 1995. The lake’s easterly and westerly basins were monitored separately. The information is presented as “Summer Mean Water Quality”.
The East basin of the lake covers an area of 320 acres. The mean depth was not calculated. The lake had a TSI average of 73 and an Ecoregion lake rank of 52.
Phosphorus 155 ppb /4* TSI 77** Eco-Rank >52%*** Chlorophyll 60 ppb/4 TSI 71 Eco-Rank >51 Secci Disk 0.5 meters/74 TSI 70 Eco-Rank >46%
The West basin of the lake covers an area of 210 acres. The mean depth was not calculated.. The lake had a TSI average of 73 and an Ecoregion rank of 47.
Phosphorus 150 ppb /4* TSI 76** Eco-Rank >57%*** Chlorophyll 77 ppb/4 TSI 73 Eco-Rank >35 Secci Disk 0.5 meters/74 TSI 70 Eco-Rank >46%
Notes: * Total number of measurements. ** Carlson’s Trophic State Index. *** Indicates that the water quality parameter was less than 46 percent of all assessed lakes in the Western Corn Belt Plains Ecoregion.
Goose Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of Goose Lake was impaired as a result of oxygen depletion, eutrophication, and bottom sedimentation.
The survey attributed the source of the degradation of water quality to non irrigated crop production, pasture land, agricultural chemicals application, and urban storm water runoff. Current use was listed as limited.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-46
Hall Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of the lake was impaired as a result of eutrophication.
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current and potential future were listed as limited.
Lower Twin Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of the lake was impaired as a result of oxygen depletion, eutrophication and turbidity.
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current use was listed as limited.
Pickerel Lake
Pickerel Lake covers 715 acres. The Pickerel Lake Fisheries Survey of the lake found that the carp population was at a level greater than the state-wide median. The bullhead population had reached a level 500 times in excess of the state-wide median.
1994 MN 305b Report to Congress Lake Water Quality. This report states that the Pickerel Lake, based upon survey, is an impaired lake.
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of Pickerel Lake was impaired as a result of oxygen depletion, eutrophication, bottom sedimentation, and toxicity due to pesticides, dissolved metals.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-47
The survey attributed the source of the degradation of water quality to non irrigated crop production, pasture land, agricultural chemicals application. Current use was listed as limited.
School Section Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of School Section Lake, covering 101 acres, is impaired as a result of bottom sedimentation and turbidity.
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current and potential future uses are limited.
1994 MN 305b Report to Congress Lake Water Quality. This report states that School Section Lake, based upon survey, is an impaired lake.
Sugar Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of the lake was impaired as a result of eutrophication.
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current and potential future uses are limited.
Upper Twin Lake
1991 NPS Survey of Resource Managers. The summary of the 1991 NPS Survey of Resource Managers indicated that the water quality of Upper Twin Lake, covering 677 acres, is impaired as a result of oxygen depletion, eutrophication and turbidity.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-48
The survey attributed the source of the degradation of water quality to non irrigated crop production and agricultural chemicals application. Current use is limited to poor fishing as is potential future uses.
1994 MN 305b Report to Congress Lake Water Quality. This report states that the Upper Twin Lake, based upon survey, is an impaired lake.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-49
2.12 GROUND WATER QUANTITY
2.12.1 County Aquifer Yields
Minnesota Geological Survey S-3 Quaternary Hydrogeology data list surficial soils consisting of areas of glacial till and glacial outwash. Glacial till is an under-layered compact mixture of sand, silt, clay, gravel and boulders. Average water yields are less than one gallon per minute. Glacial outwash is a mixture of sand, silt, clay and gravel with some silt and clay left by glacial rivers on alluvial plains. Water yields in glacial outwash range from 100 to 500 gallons per minute. Outwash areas are located around Bear Lake, Albert Lea Lake, near Oakland, and in the southeast corner of the County.
No data exists on the gallons of ground water used yearly in the County. Present uses for ground water include municipal and individual wells for human consumption, heat exchange units, agricultural irrigation and livestock use.
Ground water tends to flow to the east towards the Mississippi River basin.
Observation Wells The Department of Natural Resources has five observation wells located in Freeborn County. Four of the wells have been observed since 1981. They are located in the Shell Rock River Watershed District, the Cedar River Watershed, the Winnebago River Watershed and the Le Sueur River Watershed. The USGS has been the official observation well since 1984, however, no USGS wells are currently active in the County.
Groundwater supply for Freeborn County is adequate. If drought conditions are present, continuous water level monitoring is requested. Generally aquifer levels are lower in winter months and reach maximum elevations in mid summer; however, this does not always hold true. Precipitation has a direct influence on recharge and discharge in any given year. These averages usually reflect six readings, four readings mainly in spring and summer and two readings in winter. AWLs are not absolutes. They can vary because of precipitation, seasons and number of months read.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-50
Groundwater Appropriation DNR regulates water appropriations. According to DNR 1997 permit records, there are 45 permits allowing groundwater appropriation in Freeborn County.
Two are in the Blue Earth River Watershed; 10 are in the Cedar River Watershed; five are in the Le Sueur River Watershed; nine are in the Winnebago River Watershed; three are in the Cannon River Watershed; and, 16 are in the Shell Rock River Watershed District. The permits are discussed in context of the watershed in Part III.
2.12.2 Shell Rock River Watershed District Ground Water Quantity
Ground Water Appropriation. The DNR has issued 16 ground water appropriation permits. Five permits have been issued for irrigation; nine permits for municipal water appropriation, and two permits for industrial use. The total irrigated acres are 705 acres in this watershed. Ground water appropriation totals 126,775 million gallons per year.
Township Watershed Source Use Acres Active MGY Freeman Shell Rock DCRAO Maquoketa Irrigation 150 N 40 Hayward Shell Rock Cedar ~ Galena Irrigation 120 Y 46 Pickerel Lake Shell Rock Cedar ~ Maquoketa Irrigation 140 Y 53 Pickerel Lake Shell Rock Cedar ~ Galena Irrigation 175 Y 57 Hayward Shell Rock Cedar ~ Galena Irrigation 120 Y 46 Albert Lea City Shell Rock Cedar ~ Maquoketa Municipal 0 Y 2400 Albert Lea City Shell Rock Cedar ~ Maquoketa Municipal 0 Y 2400 Albert Lea City Shell Rock Cedar ~ Maquoketa Municipal 0 Y 2400 Albert Lea City Shell Rock Cedar ~ Maquoketa Municipal 0 Y 2400 Albert Lea City Shell Rock Cedar ~ Galena Municipal 0 Y 10 Glenville City Shell Rock Cedar ~ Galena Municipal 0 Y 33 Glenville City Shell Rock Cedar ~ Galena Municipal 0 Y 33 Hayward City Shell Rock Prairie ~ Jordan Municipal 0 Y 9.5 Manchester City Shell Rock Unknown Municipal 0 Y 4 Albert Lea Shell Rock Unknown Industrial 0 Y 1375 Albert Lea Shell Rock Unknown Industrial 0 Y 1375
Ground Water Use Conflict & Well Interference. There have been no reported water use conflicts since the inception of County water planning.
Observation Wells. There is an Observation Well in Section 9 of Albert Lea Township. It monitors the Cedar Valley formation.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-51
2.13 GROUND WATER QUALITY
Ground Water Monitoring and Assessment Program In 1993, the MPCA began the Ground Water Monitoring and Assessment Program, GWMAP, in Freeborn County. The purpose of the program is to discover the basic quality of ground water in the state's principal aquifers, especially aquifers sensitive to wide spread, low-level pollution. As part of this program, MPCA provides technical assistance to local governments by helping to design monitoring programs and evaluate ground water quality data to meet their needs.
As part of the GWMAP, MPCA monitors as many as 125 different water quality parameters. The program depends upon local citizen cooperation, since the wells monitored are private domestic water supplies. Observation wells are not used in this program. Five wells were monitored for 56 parameters in the Cedar Valley Aquifer, and two wells in the Galena Aquifer. The results indicated that the water supplies measured did not exceed established Health Risk Limits( HRL). HRL are not established for all parameters and this program is intended to determine if additional HRL standards are needed. In the event a water quality problem is identified, MPCA notifies well owners using the problem water supply. A copy of the current GWMAP report is available at the County Planning and Zoning Office at the Courthouse.
Minnesota Department of Health Data on Groundwater Quality The Minnesota Department of Health, MDH, data on groundwater quality in Freeborn County prior to 1990, consist of 165 records covering municipal well systems; one non-municipal community system that is included in the Public Water Supply inventory; MDH put out a volatile organic chemical study of municipal well systems that showed the presence of volatile organic chemicals in the County.
Joint Pesticide Study The MDH and MDA have completed a joint pesticide study that test eight public wells in the County. One well was found to have low nitrate-nitrogen levels, and three had pesticides. The
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-52
data on the public water supply wells did not exceed the Health Risk Limit, HRL standards. Well locations were not given in this study.
Moscow and Oakland, (M & 0), Project The M & 0 Project completed in 1989 was at volunteer, private well water analysis for chlorinated hydrocarbon insecticide, common agricultural herbicides and organophosphate insecticides. Approximately 70 wells were sampled. Analytical results revealed six wells with a measurable chemical contaminate and two samples that actually exceeded drinking water HRL.
Other Groundwater Quality Studies MDH and MnDOT have collected water as part of a state survey of water samples for pesticide contamination. A national pesticide survey was also conducted by the Environmental Protection Agency, EPA. The results of the survey are on file in the Freeborn County Planning and Zoning Office.
Results of a MDH Nitrate and Pesticide analysis Monitoring Survey, a state-wide Volatile Organic Survey of Non-Community Public Water Systems, and the National Pesticide Survey conducted by the EPA stated that there was no measurable contamination of chemicals or concentration of chemicals were below HRL for these wells.
Routine MDH Well Testing The MDH has drinking water quality data and new well records. New water wells are routinely tested as part of the MDH Water Well Program. In addition, the MDH performs public water, supply and special water quality studies in conjunction with the MPCA and MDA
County Well Testing Approximately 200 private wells are tested annually in Freeborn County. About 10 percent of these wells have bacterial contamination. Less than 3 percent show nitrate/nitrogen contamination. Freeborn County follows up on all identified contaminated wells in an attempt to
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-53
correct the situation. Seven hundred private wells were tested for nitrates and fecal coliforms between 1979 and 1988. The range of nitrates were undetectable to nine parts per million.
Abandon Wells Freeborn County established an abandoned well sealing program in 1992. A similar program was established in 1995 through the NRCS Office for sealing agricultural water wells only; approximately 10 wells have been properly sealed under this program. A County-wide inventory program was started during 1993 in order to locate unused wells. This inventory continues to document underground storage tanks, above ground storage tanks, and feedlot location distances from water wells. Water samples are routinely drawn for property transfers and interested owners information. These samples are tested for bacteria and nitrates by a certified laboratory. The Planning and Zoning Office makes on-site inspections for locating water wells and septic systems for new house construction.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-54
2.14 ERODING LAND
2.14.1 County Setting
Soil erosion was identified as the 6th most important water issue. Soil erosion occurs in both urban and rural settings. County officials are committed to protecting topsoil.
In urban settings, erosion can result because of poor construction management practices. When excavated soils are not protected at building construction sites, or if public and private road projects often do not include silt fences and mulching ground cover, erosion will take place. In Freeborn County there are 1,415 miles of roadway. There are 118 erosion occurrences with the roadways in the County. This is an erosional volume of 34.212 cubic feet, which is very low. This is equal to 24 cubic feet per mile of lost soil. Of the total erosion, 97 percent is from washing, and 3 percent from slides and none is loess.
Soil and other material that is washed or blown into surface waters is of particular concern in Freeborn County because of the large area of surface waters and their importance to this County. When sediment particles are suspend in the water, they then form a thin layer the bottom of streams and lakes. These thin layers create blankets that smother the aquatic habitat. Turbid water decreases light penetration needed for aquatic plant growth and may impair game fishing habitat. This process is called sedimentation.
Silt deposits in wetlands are transported through vegetation which acts as a partial filtering mechanism, and eventually impacts water quality in the nearby lake or stream. The silt that passes through the fringe wetland into the streams and lakes results in increased turbidity and nutrient loads, and a reduction in dissolved oxygen. The net result is an impairment of aquatic habitat and benthic carry capacity. Critical areas of sedimentation are distributed throughout the County with small concentrations in the west central and central part of the County.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-55
Sedimentation is a continuing problem in all of our wetlands and road ditches. Some of the landscapes that are subject to severe erosional problems are in the Hollandale area, the Petran area, and on outwash plains. Other areas of the County that are experiencing serious sedimentation problems include Turtle Creek, Geneva Lake. Albert Lea Lake, Fountain Lake, and Bear Lake.
Land uses that results in excessive wind or water erosion affect water quality. Soil loss totals range from 2 tons per acre per year on organic soils to 5 tons per acre per year on mineral soils. Erosion occurring in excess of one ton per acre per year has a noticeable affect on water quality. The absence of vegetative cover is currently affecting water quality in many areas. We need approximately 26,000 acres in long term set-aside with field or tree cover.
Special events such as heavy rains, drought, and strong winds affect the severity of sedimentation, problems. However, land use practices designed to control or reduce erosion will prevent serious water quality problems in most instances. Alternative tillage systems leaving 30-40 percent residue on the land after planting are also very beneficial for water quality improvement
The surficial soils in Freeborn County, according to MGS map S-3 Quaternary Hydrogeology, consist of areas of glacial till and glacial outwash. Glacial till is an non-layered, compact mixture of sand, silt, clay, gravel and boulders. Glacial outwash is a mixture of sand and gravel with some silt and clay left by glacial rivers in alluvial plains. Outwash is located around Bear Lake. Albert Lea Lake, along Petran and Oakland, and in the southeast comer of the County 22.
Freeborn County has about 380,000 acres of cropland. According to criteria established by the 1985 Farm Bill, 47,800 of these acres are classified as high erodible land (HEL). Approximately 17,634 of these acres are currently, 1997, enrolled in the CRP and 555 acres in the RIM Program. In 1993, 25,775 acres were enrolled in CRP.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-56
2.14.2 Shell Rock River Watershed District Eroding Land
Setting Soils in the Shell Rock River Watershed District are highly productive. The productivity of these soils can be maintained with good management using appropriate conservation practices that inhibit soil movement, contain damage from concentrated flow and manage soil water.
Lack of good soil and water management can result in the movement of soil into surface waters as sediment. The loss of soil under these circumstances then becomes a water quality problem instead of a productivity maintenance problem
Good soil conservation and water management practices protect the soil resource and prevent water quality problems.
Broad-based adoption of soil conservation practices can be highly dependent on the availability of reliable information, technical support, financial assistance and competent contractors when public interest is high. Lack of any of these resources at a time of great demand may result in conservation practices not being adopted by the landowner or operator.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-57
2.15 IRRIGATION
2.15.1 County Setting
In 1997, Freeborn County had 17 surface water appropriation permits for irrigation. These totaled 1,180 acres permitted to be irrigated with surface water. Of the 17 permits, only six permit holders actually pumped water in the past five years.
Freeborn County had 13 groundwater appropriation permits for irrigation in 1997. These permits totaled 1,955 acres permitted to be irrigated with groundwater. Of the 13 permits, 11 permit holders actually pumped water in the past five years. The majority of the appropriation was from the Cedar Valley-Maquoketa-Galena carbonate aquifer system.
Mansfield Township had surface and groundwater permits to appropriate water to irrigate 1,022 acres, but actually irrigated 982 acres. The other townships have irrigation less than 1,000 acres, according to the latest information from the DNR (32).
During the past seven years, there have been no reported conflicts regarding either permitted surface or groundwater appropriations with other water uses.
2.15.2 Shell Rock River Watershed District Irrigation
Townships Irrigating 1,000 Acres. There are no townships in which there are 1,000 acres or more of land is irrigated.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-58
2.16 DRAINAGE
2.16.1 County Setting
Freeborn County's agriculture is dependent upon the public and private drainage systems. It is our policy to maintain this existing drainage system and to reduce the nutrient and sediment loads carried in the water flowing through this drainage system.
Freeborn County has more than 350 miles of open ditches as shown on the following tables for county ditches and judicial ditches. Average yearly flow data of this ditch system is not available. Extensive drainage is present in Freeborn County and in South Central Minnesota that has a direct effect on water quality and quantity of receiving streams and lakes. Freeborn County's drainage system is physical and financially in good condition. It is County policy to levy repair funds sufficient to cover repair costs and to maintain a reserve balance for future repairs.
Present concerns address establishment and maintenance of grass buffer strips on both sides of drainage ditches. Construction and maintenance of berms on the sides of ditches would prevent erosion and slumping of the banks.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-59
Freeborn County Ditches
No. Lien Status Township Construction Condition Area 1. 1904 Inactive 2. 1923 Inactive 4. 1904 Active Pickerel Lake Ditch/tile Good 4 5. 1904 Active Nunda & Mansfeld 6. Inactive 7. Inactive 8. 1904 Active Bath Ditch/tile Fair 5.5 9. 1907 Inactive Manchester 10. Inactive 11. 1907 Active Manchester Ditch/tile Good 6.4 12. 1907 Inactive 13. None Inactive 15. Active Bancroft, Riceland Ditch/tile Good 2.8 16. 1908 Active Albert Lea, Freeman,& Ditch/tile Good 8.2 Shell Rock 17. 1908 Active Nunda, Freeman Ditch/tile Good 6.8 18. 1910 Inactive Mansfield 19. None Inactive 20. None Inactive 21. None Inactive 22. None Inactive 23. 1911 Active Alden, Nunda, & Mansfield Ditch/tile Good 8.2 24. None Inactive 25. 1913 Active Albert Lea Ditch was abandoned and part was taken over by the City of Albert Lea for storm sewer. 26. None Inactive 27. None Inactive 28. 1914 Active Manchester, Bath, & Ditch/tile Fair 7.8 Hartland. 29. 1916 Active Hartland Ditch Good 6.4 30. 1925 Active Geneva, Bath, Bancroft, Ditch Good 4.8 Riceland 31. 1919 Active Moscow, Oakland Ditch/tile Fair 6.8 32. 1919 Active Riceland, Hayward Ditch/tile Fair 8.6 33. Inactive 34. 1922 Active Alden, Carlston Tile Good 6.4 35. 1920 Active Freeborn Ditch/tile Fair 5.7 36. 1921 Active Hayward, Riceland Tile Good 4.6 37. 1922 Inactive Carlston, Manchester 38. None Inactive 39. 1921 Active Manchester, Carlston Ditch/tile Good 2.2 40. 1942 Active Freeman Ditch/tile Fair 6.8 41. Inactive
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-60
No. Lien Status Township Construction Condition Area 42. Inactive 43. 195? Active Freeman Ditch/tile Fair 2.2 46. 1958 Active Bath Ditch/tile Fair 11.4 47. 1956 Active Oakland, Hayward Ditch/tile Good 2.8 48. 1959 Active Pickerel Lake Ditch/tile Good 5.5 49. 1959 Active Shell Rock Ditch/tile Fair 3.6 50. 1958 Active Freeman, Albert Lea Ditch/tile Good 2.2 52. 1959 Active Freeman Tile Good 3.2 53. 1961 Active Pickerel Lake, & Ditch/tile Good 3.4 Manchester 54. 1946 Active Pickerel Lake, Alden & Ditch/tile Good 8.1 Manchester 55. 1975 Active Shell Rock, Nunda, & Ditch/tile Fair 21.2 Freeman 56. 1961 Active Albert Lea Tile Good 1.4 57. 1963 Active Bath Ditch/tile Good 3.1 58. 1962 Active Manchester Ditch/tile Good 1.4 59. 1962 Active Freeman Tile Good 2.6 60. 1964 Active Freeman Tile Good 2.2 61. 1964 Active Bath Tile Good 1.7 62. 1969 Active Oakland, Hayward Ditch/tile Fair 12.1 63. 1968 Active Bancroft, Hartland, Bath & Ditch/tile Good 5.7 Manchester 64. 1968 Active Geneva Ditch/tile Good 3.8 65. 1973 Bancroft, Bath & Ditch/tile Fair 9.1 Manchester. 66. 1972 Active Pickerel Lake & Tile Fair 1.8 Manchester. 67. 1971 Active Bath Tile Good 2.9 68. 1977 Active Pickerel Lake Ditch/tile Good 7.1 69. Inactive 70. 1973 Active Pickerel Lake & Alden Tile Good 1.8 72. 1977 Active Alden Ditch/tile Good 1.4 73. Inactive 75. Active Ditch/tile Good 5.4 76. Active Ditch/tile Good 3.2 77. Active Ditch/tile Good 14.8 79. Permanent Ditch/tile Good 9.4 easement for 1 rod grass strip 80. Active Ditch/tile Good 5.4 81. Active Ditch/tile Good 4.2
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-61
Judicial Ditches
No. Lien Status Township Construction Condition Area 1. 1907 Inactive Freeborn & Mower County 2. 1923 Inactive Freeborn & Mower County 3. Inactive Freeborn & Mower County 4. 1921 Inactive Freeborn & Mower County 5. 1922 Freeborn & Mower County Ditch/tile Fair 4.2 6. 1923 Hartland Ditch/tile Fair 10.2 7. 1923 Bath Tile Good 2.2 8. 1922 Freeborn & Waseca County Ditch/tile Fair 9.6 9. 1923 Albert Lea, Freeman & Ditch/tile Poor to 8.2 Pickerel Lake Fair 10. None 11. None 12. 1923 Freeborn & Steel County Ditch/tile Good 2.8 13. None 14. 1917 Carlston Township Ditch/tile Fair to 14.2 Good 15. None 16. None 17. 1929 Oakland Township Ditch/tile Good 3.6 18. 194? Riceland Township Ditch/tile Good 4.? 20. 1948 Shell Rock & Hayward Ditch/tile Good 7.1 21. 1950 Manchester, Bancroft & Ditch/tile Good 7.2 Hartland Townships 22. 1948 Hayward & Riceland Ditch/tile Good 6.9 23. 1948 Freeborn & Steele County Ditch/tile Good 1.8 24. 1971 Freeborn & Mower County Ditch/tile Fair 39.4 25. 1950 Mansfield Township Ditch/tile Good 10.2 26. 1952 Moscow Township Ditch/tile Good 1.6 26. 1953 Freeborn & Faribault Co. Ditch/tile Good 8.4 27. 1953 Newry Township Ditch/tile Good 4.2 28. 1953 Geneva Township Ditch/tile Good 2.1 29. 1955 Riceland Township Tile Good 1.5
A Public Drainage Map is available for review in the Freeborn County Surface Hydrology Atlas in the County Planning and Zoning Office.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-62
2.16.2 Shell Rock River Watershed District Drainage
A Public Drainage Map is available for review in the Freeborn County Surface Hydrology Atlas in the County Planning and Zoning Office.
Shell Rock River Watershed District Ditch & Drainage System There are 25 county ditches and 4 judicial ditches in the Shell Rock River Watershed District. Combined, they drain a total of 178.5 square miles, or 56 percent of the watershed. The following is a list of County and Judicial Ditches.
County Ditches
No. Lien Status Township Construction Condition Area 4 1904 Active Pickerel Lake Open Ditch/tile Good 4 11 1907 Active Manchester Open Ditch/tile Good 6.4 15 Active Bancroft, Riceland Open Ditch/tile Good 2.8 1908 Active Albert Lea, Freeman & Open Ditch/tile Good 8.2 Shell Rock 17 1908 Active Nunda, Freeman Open Ditch/tile Good 6.8 25 1913 Active Albert Lea Ditch was abandoned and part was taken over by City of Albert Lea for storm sewer. 32 1919 Active Riceland, Hayward Open ditch/tile Fair 8.6 40 1942 Active Freeman Open ditch/tile Fair 6.8 47 1956 Active Oakland, Hayward Open Ditch/tile Good 2.8 49 1959 Active Shell Rock Open Ditch/tile Fair 3.6 50 1958 Active Freeman, Albert Lea Open Ditch/tile Good 2.2 52 1959 Active Freeman Tile Good 3.2 53 1961 Active Pickerel Lake, & Open Ditch/tile Good 3.4 Manchester 54 1964 Active Pickerel Lake, Alden, Open Ditch/tile Good 8.1 & Manchester 55 1975 Active Shell Rock, Nunda, & Open Ditch/tile Fair 21.2 Freeman. 56 1961 Active Albert Lea Tile Good 1.4 58 1962 Active Manchester Open Ditch/tile Good 1.4 59 1962 Active Freeman Tile Good 2.6 62 1969 Active Oakland, Hayward Open Ditch/tile Fair 12.1 63 1968 Active Bancroft, Hartland, Open Ditch/tile Good 5.7 Bath & Manchester
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-63
No. Lien Status Township Construction Condition Area 65 1973 Active Bancroft, Bath, & Open Ditch/tile Fair 9.1 Manchester 66 1972 Active Pickerel Lake & Tile Fair 1.8 Manchester. 68 1977 Active Pickerel Lake Open Ditch/tile Good 7.1 70 1973 Active Pickerel Lake & Alden Tile Good 1.8 76 Active Open Ditch/tile Good 3.2 77 Active Open Ditch/tile Good 14.8
Judicial Ditches
No. Lien Status Township Construction Condition Area 9 1923 Active Albert Lea, Freeman & Open Ditch/tile Poor to 8.2 Pickerel Lake Fair 20 1948 Active Shell Rock & Hayward Open Ditch/tile Good 7.1 21 1950 Active Manchester, Bancroft Open Ditch/tile Good 7.2 & Hartland Townships 22 1948 Active Hayward & Riceland Open Ditch/tile Good 6.9
Summary of Ditch Water Quality and Quantity Modeling Information. There is currently no ditch water quality and quantity modeling information available for the ditches of this watershed.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-64
2.17 POLLUTANT SOURCES
2.17.1 County Setting
A Freeborn County Citizen Attitude Survey, completed in June 1988, concerning water resource issues revealed "pollutant effects of waste disposal sites" as the number four priority. This reflects the importance of this issue as perceived by a representative sample of households. In response to this attitude expressed by our citizens Freeborn County is following MPCA Solid Waste Management Rules Chapter 7001. The scope of these rules requires an agency permit for the storage, treatment, utilization, processing, transfer intermediate disposal or final disposal of solid waste.
Solid Waste Disposal Pollution from landfills or dumpsites is an important concern to Freeborn County residents. Freeborn County has one closed solid waste landfill, which is managed by the City of Albert Lea. Annual monitoring reports are on file with the Water Resource Center at Mankato State University. Because of geologically sensitive areas in the southeast comer and east central portion of the County, these areas should not be considered when siting landfills.
Prior to 1973, solid waste disposal was virtually unregulated throughout the state. Villages and townships did operate official dumps, in which burning was used as a method of volume reduction and rodent control. In 1970, the Solid Waste Disposal Act, SWDA, was amended to promote resource recovery, alternatives to land disposal and a program was established to close open dumpsites. The 1976 Resource Conservation and Recovery Act, RCRA, required local and regional solid waste planning activities to encourage material recovery and to reduce dependence on land disposal.
Demolition Landfills There are currently three permitted demolition landfills in Freeborn County. Prior to 1990, there was one permitted demolition landfill in the County. When permitting a. demolition landfill site,
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-65
MPCA. DNR and the U. S. Army Corps of Engineers are consulted to ensure compliance with existing regulations.
MPCA Master Entity System List of [Waste Disposal] Sites The Master Facility List Report dated March 20, 1997, list 34 waste disposal sites in Freeborn County. Nineteen sites are in the Shell Rock River Watershed District; eight sites in the Cedar River Watershed; two sites in the Blue Earth River, Le Sueur River, and Winnebago River Watersheds respectively; and, one site in the Cannon River Watershed. Specific information is about each site is discussed in the applicable watershed.
Hazardous Waste Generators Freeborn County fully supports state and federal guidelines for labeling, storage, transportation and disposal of hazardous waste generated in Freeborn County.
The Hazard Waste Cleanup Program conducted by the MPCA Site Response Section acts to reduce or eliminate threats to human health and the environment caused by improper disposal, or spills of hazardous wastes. The MPCA oversees the investigation and cleanup of the waste by parties responsible or uses state or federal superfund dollars for the cleanup if no responsible party is known, able or willing to undertake the cleanup. There are currently no state or federal superfund sites within Freeborn County.
Information identifying hazardous waste generators enable the County to understand the possible threats to water and resources from local facilities. It also enables a County to develop appropriate emergency plans. If water pollution is discovered, knowing where hazardous waste facilities are located may help to track the source of pollution.
The Federal Resource Conservation and Recovery Act established a "cradle to grave" tracking system of hazardous waste generators to eliminate inappropriate methods disposal. Minnesota
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-66
does not have any operating hazardous waste disposal facility. The majority of it is being transported out of state. Some materials are being recycled or incinerated in Minnesota.
MPCA Hazardous Waste Information Management System In March of 1997, the system listed 295 EPA hazardous waste generator registrant identifications on file in Freeborn County.
Out of the 295 registrants on file, a total of 143 were active generators County-wide. In the Shell Rock River Watershed District, there are 122 active generators with Albert Lea addresses; three with Glenville address; and two with Hayward address. In the Cedar River Watershed, there are three with Hollandale addresses, and three with Clarks Grove addresses. In the Le Sueur River Watershed there are two with Freeborn addresses, and two with Hartland addresses. The Winnebago River Watershed list three with Emmons addresses. In the Blue Earth River Watershed, two generators are listed with Alden addresses.
Under the Federal RCRA, hazardous waste generators are divided into three classifications:
1. Large quantity generators that produce greater than 1,000 kg or 2,200 pounds per month. 2. Small quantity generators which produce from 100 kg to 1000 kg per month. 3. Generators of less than 100 kg (200 pounds) per month are exempt from hazardous waste regulations.
In Minnesota, including this third category, all generators of hazardous waste are regulated. Certain site and accumulation requirements differ between large and small generators.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-67
Pesticides & Fertilizers The land application of synthetic chemicals; even when applied with strict adherence to labeled directions, and in accordance to state and federal agency rules, offers a potential for impact as a pollutant source.
Fertilizer and pesticide data show nine Freeborn County incidents occurring since 1984. These incidents include vehicle accidents, a plane crash, and the dumping of unknown pesticide. MDA and MPCA were notified and investigated all incidents. 1985 restricted use pesticide sales indicated these chemicals were used to treat potato and soybean fields for leafhoppers, aphids and flea beetles. Less then 300 gallons of restricted use pesticide were purchased for use in Freeborn County.
It should be noted that 1985 data may not be representative of what is currently being used within the County. This information is on file at the Planning and Zoning Office.
Ten non-commercial pesticide applicators were licensed by MDA for Freeborn County in 1988. Fifty-six commercial pesticide applicators were licensed by MDA for Freeborn County in 1988. Fifteen licensed fertilizer plants were operating within Freeborn County during 1988. The following plants are also licensed by MDA:
1. Dry Bulk Blend. 2. Liquid Cold Blend. 3. Suspension fertilizer material. 4. Anhydrous ammonia (82%N). 5. Aqua Ammonia Converter. 6. Nitrogen solutions. 7. Manufacturer Liquid Base Materials. 8. Arnmoniation-Granulation. 9. Manufacturer secondary and minor elements products.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-68
Continued cooperation between federal, state and local officials is needed to monitor pollutant sources. Freeborn County endorses MPCA and MDA for their part in licensing, monitoring, and educating chemical applicators.
Public and private land use practices effect our surface and groundwater quality. Effective controls over point sources will assist in accomplishing our goals. Freeborn County is committed to an effective policy, clearly defined to select the appropriate practices, which will minimize impacts from pollutant sources.
2.17.2 Shell Rock River Watershed District Pollutant Sources
Landfill and Dumps The following is a list of landfills and dumps and as shown on the MPCA Master Entity List.
Albert Lea Demolition Landfill between I-35 & Hwy 65, approx. 1 mile No. of Hwy 23 & I-35 MPCA # 4384 ~ SW ¼ Section 32 of Bancroft Township.
Status: This is a permitted demolition landfill.
Albert Lea Dump (Former) On West Edgewater Drive, under North Edgewater Park MPCA # 386 ~ NW ¼ Section 6, Albert Lea Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
It is also listed in the Comprehensive Environmental Response, Compensation, and Liability Information System. This is the U.S. Environmental Protection Agency
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-69
database of potential or actual hazardous waste sites nationwide. These sites are candidates for addition to the federal and state Superfund list.
Update: The MPCA has contracted for investigations and reports are on file at the MPCA Majors and Remediation Division Superfund Section. The most recent report was dated June 27, 2003 and titled “Additional Phase II Assessment and Response Action Plan” Edgewater park/Former Albert Lea Dump- MPCA 1940 Edgewater Drive Albert Lea, Minnesota”. Recommendations include additional monitoring, evaluating leachate treatment remedies, prioritizing site activities and design of treatment remedies.
Albert Lea Gas Manufacturing Site northeast corner of Broadway and Front Street MPCA # 370 ~ SW ¼ Section 9 Albert Lea Township.
Status: This site is listed in the Comprehensive Environmental Response, Compensation, and Liability Information System, the U.S. Environmental Protection Agency database of potential or actual hazardous waste sites nationwide. The site is a candidate for addition to the federal and state Superfund list.
The firm is participating in the Voluntary Investigation and Cleanup Program. This is a program in which a voluntary investigation has been or is being conducted, with MPCA staff providing technical review of the investigation and any necessary remedial activities.
Albert Lea Sanitary Landfill 1 mile south of the Hwy 20 & US Hwy 90 intersection MPCA # 328 ~ NE ¼ Section 32 Bancroft Township 2, 8, 10, 12
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities and closed municipal dump sites. The facility had been issued a Solid Waste Facilities Permit for solid waste handling and disposal.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-70
The facility is now closed and undergoing cleanup. It has been removed from the Comprehensive Environmental Response, Compensation, and Liability Information System, by the EPA. These sites are no longer considered a federal concern. Investigation of this site is now funded through state dollars rather than through federal funds. No further remedial action is planned.
Alliant Energy 111 East Front St. MPCA # 4375 ~ SW ¼ Section 9 Albert Lea Township
Status: This is a closed landfill site undergoing cleanup.
American Gas Machine Co/Lou-Rich Machine Tool 505 West Front Street 3400 ~ NW ¼ Section 17 Albert Lea Township.
Status: This is a closed landfill site undergoing cleanup. It is listed in the Comprehensive Environmental Response, Compensation, and Liability Information System, the U.S. Environmental Protection Agency database of potential or actual hazardous waste sites nationwide. The site is a candidates for addition to the federal and state Superfund list.
Glenville Dump Southeast part of Glenville off frontage road, ½ mile south of Hwy 13 MPCA # 1665 ~ NW ¼ Section 7 Shell Rock Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-71
Hayward Dump 1 mile west of Hayward, ½ mile south of Hwy 46. MPCA # 1660 ~ NE ¼ Section 8 Hayward Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
Imperial Inc. Northwest corner of Hwy 3 and County Road 74. MPCA # 48 ~ NE ¼ Section 6 Albert Lea Township.
Status: This site has been removed from the Comprehensive Environmental Response, Compensation, and Liability Information System, by the EPA. These sites are no longer considered a federal concern. Investigation of this site is now funded through state dollars rather than through federal funds. A cleanup of this site is now, (1997), in progress.
Jensen Demolition Landfill Area bounded by W 9th St, Lincoln Ave & California Street. MPCA # 1262 ~ SE ¼ Section 17 Albert Lea Township.
Status: This is a permitted demolition landfill, but is now closed.
Manchester Dump 1 ½ miles north of Manchester on Hwy 13, east of Hwy 13 about ¾ miles. MPCA # 1662 ~ SE ¼ Section 11 Manchester Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the status of these sites is not available.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-72
Municipal Sanitary Sewer on Frank Hall Drive, between 3rd Street and 4th Street. MPCA # 327 ~ NW ¼ Section 16 Albert Lea Township.
Status: No further remedial action is planned. This site has been removed from the Comprehensive Environmental Response, Compensation, and Liability Information System, by the EPA. It is no longer considered a federal concern. Investigation of this site is now funded through state dollars rather than through federal funds.
Olson Demolition Landfill 3/4 mile SE of County Roads 84 and 81 intersection, S. on gravel rd. MPCA # 1217 ~ NE ¼ Section 31 Hayward Township.
Status: This is a permitted demolition landfill, but is now closed.
Peterson Demolition Landfill / Matson Demolition Landfill 3/4 - 1 mile west-northwest of CSAH 18 & CSAH 17 intersection, between RR tracks. MPCA # 1218 ~ SW ¼ Section 20 Albert Lea Township 8.
Status: This is a permitted demolition landfill.
Peterson Transfer Station approximately 3/4 to 1 mile W-NW of the Hwy 18 & Hwy 17 inters, between the RR tracks. Clarks Grove. MPCA # 3091 ~ SW ¼ Section 20 Albert Lea Township.
Status: This facility is part of a permitted demolition landfill.
Swenson Disposal Site Southwest of CSAH 20 and County Road 101 intersection. MPCA # 109 ~ NE ¼ Section 6 Albert Lea Township.
Status: This site has been removed from the Comprehensive Environmental Response, Compensation, and Liability Information System, by the EPA. These sites are no longer
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-73
considered a federal concern. Investigation of this site is now funded through state dollars rather than through federal funds. No further remedial action is planned.
Unnamed - Freeman Township 1 mile southwest of Hwy 5 and County Road 77 intersection. MPCA # 1670 ~ NE ¼ Section 26 Freeman Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
Unnamed - Twin Lakes South of County Road 87, 1/2mi east of US Hwy 69. MPCA # 1672 ~ NW ¼ Section 1 Nunda Township.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
Wilson Company Dump Between CMSTP & M RR & CRI & P RR tracks, on North shore of Albert Lea Lake, SE ¼ Section 9 Albert Lea Township. The Shell Rock River Watershed District will update this information during the comment period.
Status: This site is listed on the 1980 Statewide Outstate Dump Inventory which includes lists and maps showing the location of municipal waste disposal facilities, industrial surface impoundments, and closed municipal dump sites. This inventory was conducted and compiled in 1980; detailed information regarding the current status of this site is not available from the MPCA.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-74
NPDES Permitted Facilities
The following is a list of facilities, current to March 20, 1997, that are permitted by the MPCA to discharge waste water to surface waters of the state. The Shell Rock River Watershed District will update this information during the comment period.
Permit # Facility Location Receiving Water Type
MN0041092 City of Albert Lea Albert Lea Shell Rock River Domestic
MNG640002 City of Albert Lea Albert Lea Fountain Lake Wastewater Treatment
MN0020184 City of Clarks Grove Clarks Grove Bancroft Creek > Ditch Domestic
MN0021245 City of Glenville Glenville Shell Rock R > CD16 Domestic
MN0041122 City of Hayward Hayward Land Spread Domestic
MN0000175 Hudson Foods Inc Albert Lea Albert Lea Lake Ditch & Municipal Sewer Industrial
MN0000086 Lou-Rich Inc. Albert Lea Albert Lea Lake Storm Sewer Industrial
MN0033740 DNR Myre-Big Isle Albert Lea Albert Lea Lake Creek Domestic
MN0044458 MnDOT Info Albert Lea Shell Rock River Goose Creek Domestic
MN0000124 Seaboard Foods Albert Lea Shell Rock River Albert Lea Lake Industrial
MN0049336 City of Twin Lakes Twin Lakes Goose Creek Domestic
MN0061450 Ulland Brothers Inc Albert Lea Red Cedar River Industrial
MNG250024 Ventura Foods Albert Lea Albert Lea Lake Ditch NCC
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-75
2.18 ANIMAL FEEDLOTS
2.18.1 County Setting
A county attitude survey test showed that pollution from feedlots is a top concern, ranking sixth in the survey. Pollution from feedlots occurs when surface water runoff from a feedlot carries pollutants from the accumulated animal manure and inadequately lined holding ponds allow water to enter surface and groundwater. Freeborn County continues to participate in the MPCA Feedlot Permitting Program.
The County has developed a detailed feedlot inventory database in the Planning and Zoning Office. Currently there are 513 feedlots in the County Feedlot Inventory. The inventory shows the following information:
County Feedlots Based on Size by Animal Units
AU Size Number of Feedlots 0 25 1-49 157 50-99 95 100-199 98 200-299 52 300-399 31 400-499 16 500-999 23 1000-1999 15 2000 + 1 Total 513
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-76
County Livestock Category by Animal Units
Livestock Animal Units Category All Feedlots 300 + Feedlots 300 + Percent of All Feedlot Beef Cattle 9341 1740 19 Dairy Cattle 8126 2237 28 Swine 69193 47581 69 Turkey 1309 913 70 Chicken 3771 2517 67 Other 794 340 43 Total 92533 55328 60 Minnesota Agricultural Statistics provide the following trend information for Freeborn County:
Cattle 1992 1993 1995 1996 Net Change Beef Cows 1,700 1,900 2,100 2,200 +500 Dairy Cows 4,500 4,500 3,800 3,600 -900 All C &C 20,100 20,100 20,000 20,900 +200
Dairy Farms Grade Total 1993 Dairy Farms A 54 B 38 92 1996 Dairy Farms A 48 B 21 69 Net Change -6 -17 -23
Swine 1991 1992 1994 1995 Net Change Annual Production 302,000 289,300 279,000 276,000 -26,000
2.18.2 Shell Rock Watershed Animal Feedlots
Animal Feedlots The feedlot inventory lists a total of 146 feedlots in the Shell Rock River Watershed District. Fifty-four feedlots are permitted and 92 do not have permits. The 54 permitted feedlots produce 17,611 animal units and the 92 without permits produce 6,052 animal units. A total of 26,663 animal units of manure are produced in the watershed. Manure production is as follows:
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-77
Livestock No Permit Permitted Total Beef Cattle 2,234 AU 1,076 AU 3,310 AU Swine 2,010 AU 15,260 AU 17,270 AU Dairy 1,357 AU 935 AU 2,292 AU Turkey None None None Poultry 430 AU None 430 AU Other 21 AU 340 AU 361 AU Total 6,052 AU 17,611 AU 23,663 AU
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-78
2.19 STORAGE TANKS
2.19.1 County Setting
Freeborn County supports the enforcement of federal and state standards for construction, location, registration and management of storage tanks. Leaking storage tanks pose a serious threat to our health and to our environment. Regulated material is stored in an estimated 40,000 underground bulk storage tanks throughout Minnesota.
A March 20, 1997, report of the Tanks and Spills Section of the MPCA Hazardous Waste Division shows that Freeborn County has a total of 153 above ground, and 193 underground active tanks larger than 1,100 gallons. A total of 209 tanks in the inventory have been removed. The inventory lists 18 tanks that are classified as abandoned. Since registration requirements began, there has been 70 leak incidents investigate, and 18 of the files are still open. This inventory is also discussed in Part III by specific watersheds.
Listed are standards for underground storage tanks:
1. Constructed to be compatible with the stored substance 2. Either made from non-corrosive material or is steel encased in non-corrosive material. 3. Cathodically protected from corrosion or otherwise designed to prevent release of stored substances. 4. Installed according to specific requirements of the American Petroleum Institute Bulletin #1615, November 1979 and all manufacturer’s recommendations provide for the testing and upgrading of old tanks, and specific cleanup procedures.
Local officials do not currently have an estimate of underground tanks 1,100 or less in Freeborn County. MPCA estimates 25% of all underground tanks are leaking their contents into the ground. At present, the MPCA has a program in place that requires registration of tanks larger
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-79 than 1,100 gallons. Freeborn County needs a contingency action plan for leaking tanks that include the following: 1. Provisions for land disposal sites for contaminated soil. 2. A local program to assist the state in tank registration verification. 3. A program to assist the state in leak investigation.
Minnesota Board of Soil and Water Resources concern about the protection of underground water supplies involves management practices and local monitoring of the situation. The DNR policy reflects protection of our natural resources by establishing base conditions trends, and future needs. The MPCA, through government cooperation, communication and coordinating, does the planning, regulation and management of activities that address storage tanks. The Minnesota Extension Service will in water quality educational efforts and research solutions to handle and solve contamination from leaking storage tanks.
2.19.2 Shell Rock River Watershed District Storage Tanks
The Shell Rock River Watershed District has a total of 101 above ground storage tanks and 131 underground tanks. In addition, 166 tanks have been removed, and 11 tanks have been reported abandon. All of the tanks have over a 1,100 gallon capacity.
A total of 55 tank leaks have been reported and 13 of the incidents have not been satisfactorily resolved.
City of Albert Lea. A total of 59 facilities using an Albert Lea addresses have storage tanks over 1,100 gallon capacity. Thirteen of the sites have total of 88 above ground tanks and 46 sites have a total of 122 under ground tanks. A total of 153 underground tanks have been removed.
A total of 49 tank leaks have been reported and 12 of the incidents have not been satisfactorily resolved.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-80
City of Glenville. A total of 4 facilities using a Glenville address have storage tanks over 1,100 gallon capacity. Two of the sites have total of 3 above ground tanks and 2 sites have a total of 6 under ground tanks. A total of 7 underground tanks have been removed.
A total of 2 tank leaks have been reported and both of the incidents have satisfactorily resolved.
City of Hayward. A total of 4 facilities using a Hayward address have storage tanks over 1,100 gallon capacity. Three of the sites have total of 10 above ground tanks and 1 site has a total of 3 under ground tanks. A total of 6 underground tanks have been removed.
A total of 3 tank leaks have been reported and 1 of the incidents has not been satisfactorily resolved.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-81
2.20 INDIVIDUAL SEWAGE TREATMENT SYSTEMS, ISTS.
Freeborn County has made individual and community sewage treatment systems a priority issue. The importance of design, location, use and maintenance of these systems is actively pursued.
The improper design, location, installation, use, and maintenance of ISTS adversely affects, the public health, safety, and general welfare by discharge of inadequately treated sewage to surface and groundwater. Minnesota Rules Chapter 7080 provides the minimum standards and criteria for the design, location, installation, use, and maintenance of ISTS.
According to the MPCA, polluted surface or groundwater may affect human health and welfare in a variety of ways ranging from nuisance effects to life threatening toxicity. Drinking water may be affected by smell, taste, increased need for treatment, possible health effects or total prohibition of use. Substitute water sources may substantially increase delivery costs. Water contact recreational activities in polluted water bodies may be curtailed by unpleasant odors or tastes. Health effects such as skin irritations, nuisance factors such as algae and aquatic weeds. Consumptive activities such as fishing and hunting may be restricted.
ISTS serve the sewer needs of most of the rural residents and those living in the smaller towns in the County. In fact. 16 of 28 of the incorporated and unincorporated municipalities have no municipal sewer system. The significant exception is the City of Albert Lea, which has a wastewater treatment facility that discharges into the Shell Rock River.
ISTS are used by approximately one-third of Minnesota's residents. Typically, these users are in a rural setting. However, there has been an increasing number of housing subdivision developments in the past decade relying on ISTS.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-82
2.21 SPECIAL GEOLOGIC CONDITIONS
2.21.1 County Setting
The Upper Carbonate aquifers have the potential for sinkhole development where there is less than 50-75 feet of glacial material covering them. According to the GSAM, the Upper Carbonate is particularly vulnerable in the Cedar River and Shell Rock River Watershed Districts, and to a lesser degree throughout the remainder of the County. To date no sinkhole development has occurred in Freeborn County.
2.21.2 Shell Rock River Watershed Special Geologic Conditions
The principal aquifer that underlies the Shell Rock River Watershed District is the Cedar Valley Group. This formation is directly beneath the glacial till throughout most of the watershed. Soil associations overlying this formation are generally poorly drained, however, there are inclusions of more well drained soils.
Generally, the glacial deposit is 100 feet deep or more over the above aquifer. However, some areas are geologically very sensitive because the aquifer system is less than 10 feet from the surface.
Recent geological interpretations, (November 1997), indicates that there may be the potential for the development of karst formations throughout most of the watershed. There are no known karst areas, sand plains, or sinkholes in this watershed at this time. The bedrock valleys appear to have drained in a southerly and easterly direction.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-83
2.22 WETLANDS
2.22.1 County Setting
In general terms, wetlands are lands where saturation with water is the dominant factor determining the nature of soil development and the types of plant and animal communities living in the soil and on its surface. The single feature that most wetlands share is soil or substrate that is at least periodically saturated with or covered by water. The water creates severe physiological problems for all plants and animals except those that are adapted for life in water or in saturated soil. In general, wetlands can be considered among the most productive ecosystems in the world.
Wetlands are lands transitional between terrestrial and aquatic systems and enhance bio- diversity. The water table is usually at or near the surface of the land. In order to fit this description, wetlands must have all of the following three attributes:
1. At least periodically, the land supports a predominance of hydro phi tic vegetation. 2. The substrate is predominantly hydric soil. 3. The substrate is saturated with water long enough during the growing season of each year to support hydrophitic vegetation.
Wetlands, as defined by the U. S. Fish and Wildlife Service include lands that are identified under other categories in some land use classifications. For example, wetlands and farmlands are not necessarily exclusive. Many areas that are defined as wetlands are farmed during dry periods, but if they are not tilled or planted to crops they will support hydrophytes.
2.22.1.1 Regulatory Authority
Section 401 of the Clean Water Act The MPCA is involved in protecting wetlands under the provisions of the Clean Water Act 401 water quality certification process. Anyone who wishes to obtain a federal permit, be it a Coast
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-84
Guard Section 10 permit, a COE 404 permit or Federal Energy Regulatory Commission permits, must first obtain a State 401 water quality certification from the MPCA. Activities which may require both a 401 and a 404 permit include: construction of boat ramps, riprap for erosion, fill in a wetland, building in a wetland, construction of dams or dikes, stream channelization and stream diversion.
Section 404 of the Federal Clean Water Act Under Section 404 of the Federal Clean Water Act, the U.S. Army Corps of Engineers (COE) authorizes permits for disposing of dredged material, side-casting for drainage projects and other filling activities for both private and public projects.
Minnesota Wetland Conservation Act In 1991, the legislature approved the Minnesota Wetland Conservation Act (WCA). The goal of this act is to promote no-net-loss of wetlands and to protect the benefits wetlands provide. The benefits cited in the law include conserving surface waters, providing recreational opportunities, reducing runoff, providing floodwater retention, reducing stream sedimentation, contributing to improved subsurface moisture, helping to moderate climatic change and enhancing the natural beauty of the landscape.
The WCA moves toward its no-net-loss goal by requiring persons proposing to drain or fill a wetland to first try to avoid disturbing the wetland; second, if disturbance is unavoidable, to minimize the impact; and finally, to replace any lost wetland functions and values (MN Statutes 103A.202). Certain wetland activities area exempt from the act allowing projects with minimal impact or projects located on land where certain pre-established land uses are present to proceed without regulation.
The WCA took effect through an interim program beginning in 1992 and became fully effective January 1994. The program is administered by local units of government (LGUs) with over site provided by BWSR and enforcement provided by DNR Conservation Officers.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-85
2.22.1.2 Wetland Inventories
National Wetland Inventory The U. S. Fish and Wildlife Service established the National Wetland Inventory (NWI) project to inventory wetlands and determine trends according to standardized environmental characteristics. The NWI project located and classified wetlands using a remote sensing technique with high altitude aerial photography. Wetlands generally ranging in size between one to three acres were mapped. The NWI maps became available on 7.5 minute USGS topographic map format in 1990. They can be viewed at the Freeborn County SWCD Office.
USDA Inventory The USDA in conjunction with the local SWCD and NRCS offices has inventoried wetlands for the purposes of administering the 1985 Food Security Act. These wetlands were located using soil information, cropping history with field verification as needed.
Minnesota Wetland Report 1995 The Board of Water and Soil Resources published this report in December of 1996. It provides the following information about wetlands in Freeborn County. Appendix F of the Minnesota Wetland Report 1995 is a 1984 remaining pre-settlement wetland paper by Anderson and Craig, published by the University of Minnesota Center for Urban and Regional Affairs, CURA 84-3. It states that the County has 3000 acres of pre-settlement wetlands remaining, or 1.5 percent.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-86
Appendix G is a summary by County of Circular 39 Type wetlands found in the NWI (1971). It contains the following information about Freeborn County wetlands:
Circular 39 Type Acreage in 1971 1 765 2 246 3 8,797 4 216 5 363 6 278 7 68 7 0 Riverine 193 Industrial-Municipal 0
Total Wetlands 10,926 2.4% Total Deep Water 8,695 1.9%. Total Uplands 442,472 95.8%. Total Area of County 462,093
County Inventory On January 31, 1985, the County finalized the inventory and designation of protected waters and wetlands (7). Eighteen wetland areas were identified within Freeborn County. Six of these wetlands are located near lakes, two are located near a natural or altered water course, and the remaining ten are located within the five watershed areas. An Inventory of Minnesota Lakes. Minnesota DNR Bulletin 25 lists the protected waters lake basins in the County.
The DNR Section of Wildlife currently has one variable crest structure installed for the purpose of allowing temporary drawdown for improving lake habitats in the District. The control structure is on Lower Twin Lake.
Fringe wetlands around all our local lakes and major streams serve an important role in water quality. Goose Lake wetlands are very important to Fountain and Albert Lea Lakes. Bear Lake, Pickerel Lake, and Twin Lakes wetlands all serve as important recreation and wildlife habitat areas.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-87
Purple Loosestrife, Lythrum Salicaria, is threatening Freeborn County. Beginning in 1987, threatened areas were mapped. During 1989, the MDA and DNR cooperated with local officials to fund aerial and ground chemical application for the eradication of this noxious weed. In 1997 Freeborn County began biological control opportunities against Purple Loosestrife. This program is in cooperation with the DNR biological control state wide program.
The District will seek opportunities to improve wetland management. Existing effective measures provide wetlands as flood reservoirs, wildlife habitat, water filtration, sedimentation ponds, and hunting and trapping recreational uses.
2.22.2 Shell Rock River Watershed District Wetlands
Specific plans have not been developed for this watershed.
National Wetland Inventory Maps. Wetlands shown in the NWI are available for review at the Planning and Zoning Office, at the Soil and Water Conservation District Office, and in the Surface Water Hydrology Atlas, Freeborn County, Water Resources Center, Mankato State University 1993, which is found in schools and local libraries.
Plans for Wetlands with Controlled Outlets. Freeborn County has four lakes with control structures which are or have been used to draw down lake levels for the purpose of enhancing wildlife habitat.
Lower and Upper Twin Lakes: There is an operable outlet on Lower Twin Lake.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-88
2.23 FLOODPLAINS
2.23.1 County Setting
Freeborn County participates in the regular phase of the National Flood Insurance Program, NFIP, which includes adoption of a Floodplain Ordinance. Municipalities participating in the regular phase of the NFIP include Albert Lea, Emmons, Geneva, Glenville and Twin lakes. The County's Floodplain Ordinance is in compliance with Minnesota State Law. Generally, enforcement of the Floodplain Ordinance is adequate (42).
The Natural Resources Conservation Service reported in 1982 through the National Resources Inventory that 41,800 acres of County land were susceptible to annual flooding. This includes 33,600 acres of cropland; 2,300 acres of pasture land; and, 5,900 acres characterized as other (44).
Streams and lakes with known flooding problems are identified by Federal Emergency Agency Maps, FEMA. Over 50 percent of Freeborn County has no flooding potential. Eight percent of the County is covered with water with about a 45 percent flooding potential (43). FEMA Maps are available in the Planning and Zoning Office.
2.23.2 Shell Rock River Watershed District Floodplains
Watershed Setting. Freeborn County participates in the regular phase of the National Flood Insurance Program, NFIP, which includes adoption of a Floodplain Ordinance. District municipalities participating in the regular phase of the NFIP include Albert Lea, Glenville and Twin Lakes. The County's Floodplain Ordinance is in compliance with Minnesota State Law. Generally, enforcement of the Floodplain Ordinance is adequate.
The City of Albert Lea is the only municipality within Freeborn County to have a Floodplain Ordinance. The intent of this ordinance, is to regulate development within floodplain, define terms, and establish floodplain districts. Albert Lea's Floodplain Ordinance is consistent with the County Floodplain Ordinance.
T:\1323\02\Draft_Plan\finalpdf\finalplan.doc 2-89
2.24 SHORELANDS
2.24.1 County Setting
The 1969 Minnesota Shoreland Act, as amended in 1973 and 1989, provides direction for land use management in shoreland areas of Minnesota. Shoreland, as defined in statute, includes land within 1000 feet of the Ordinary High Water Level (OHWL) of a lake and 300 feet from a stream bank. In addition to the Shoreland Management Act, the State of Minnesota regulates shoreland use through the 1969 Floodplain Management Act and the 1973 Minnesota Wild and Scenic Rivers Act.
Freeborn County adopted a revised Shoreland Ordinance in 1989. The purpose of the Ordinance is to reduce the effect on public water of uncontrolled and unplanned development, to maintain economic value of shore land property, and to preserve the unique qualities of natural shorelands and waters. Land Use Zoning Districts were established by Freeborn County to be consistent with the classification of the lake or stream. There are currently no municipalities within Freeborn County that have adopted a municipal shore land ordinance. Freeborn County is a member of the 37 County joint powers addressing the Minnesota River watershed. (#45)
A state classification system of lakes and streams exists to designate land use and compatible activities for unincorporated areas with water basin acreage of 25 acres or more and streams with drainage area of two square miles or greater. In 1976, the rules for municipal shore1ands included classification of water basins of 10 acres or greater in incorporated areas. Criteria for classification include present development density, lake size and shape, natural characteristics of the waters and shorelands, and County and regional needs. Classification of lakes and streams are as follows: