2006 Water Quality Data Analysis
Prepared for
Shell Rock River Watershed District
November 2006 2006 Water Quality Data Analysis
Wenck File #1323-08
Prepared for:
SHELLROCK RIVER WATERSHED DISTRICT PO Box 1147 Albert Lea, MN 56007
Prepared by: November 2006
WENCK ASSOCIATES, INC. 1800 Pioneer Creek Center P.O. Box 249 Wenck Maple Plain, Minnesota 55359-0249 (763) 479-4200 Table of Contents
EXECUTIVE SUMMARY ...... iii
1.0 INTRODUCTION...... 1-1
2.0 HYDROLOGY...... 2-1
2.1 Precipitation ...... 2-1 2.2 Runoff ...... 2-2
3.0 WATER QUALITY...... 3-1
3.1 Streams...... 3-1 3.1.1 TP ...... 3-1 3.1.2 TSS ...... 3-2 3.1.3 BACTERIA ...... 3-2 3.2 Lakes...... 3-2 3.2.1 MONITORING RESULTS ...... 3-2
4.0 CONCLUSIONS ...... 4-1
5.0 RECOMMENDATIONS...... 5-1
6.0 REFERENCES...... 6-1
TABLES
2.1 2006 Precipitation Records for Shell Rock River Watershed 2.2 2006 Runoff Over Shell Rock River Watershed 3.1 2006 In-Steam Flow-Weighted Mean Concentrations, Loads, and Watershed Loading 3.2 2006 In-Stream Bacteria Geometric Mean 3.3 2006 Average Summer Lake Water Quality
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FIGURES
1.1 2006 Monitoring Locations and Major Water Features of Shell Rock River Watershed District 2.1 2006 Monthly Precipitation for the Shell Rock River Watershed 2.2 2006 Cumulative Precipitation for the Shell Rock River Watershed 3.1 Watershed Phosphorus Loads 3.2 Watershed Phosphorus Loading per Acre 3.3 Watershed Sediment Loads 3.4 Watershed Sediment Loading per Acre 3.5 In-Stream Bacteria 3.6 2006 Mean Summer Total and Ortho Phosphorus for Lakes 3.7 2006 Mean Summer Chlorophyll-a 3.8 Historical Mean Summer Chlorophyll-a 3.9 2006 Mean Summer Secchi Depth for Lakes 3.10 2006 Soluble to Total Phosphorus Ratio 3.11 Lake Bacteria Concentrations
APPENDIX
A 2006 Water Quality Report Cards
ACRONYMS
Chl-a Chlorophyll-a lbs pounds mg/L milligrams per liter (parts per million) μg/L micrograms per liter (parts per billion) OP Ortho phosphorus TP Total phosphorus TSS Total suspended solids WCBP Western Corn Belt Plains (Ecoregion)
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Through the Shell Rock River Watershed District annual monitoring program, baseline data is collected from the major water features: Albert Lea Lake, Fountain Lake, Pickerel Lake, and their tributaries and the Shell Rock River. Data are collected to assess water quality trends, set goals, and track progress towards goals.
Precipitation in the Shell Rock River Watershed District during January to October 2006 ranged from 2.8 to 3.3 inches below the 30-year January to October average of 30.15 for Albert Lea. The largest precipitation event in 2006, 3.37 inches, was recorded August 2, 2006.
Runoff over the upper watershed resulting from the 27.11 inches of precipitation between January and October 2006 was 5.6 inches based on outflow from Jugland Dam. By comparison, the runoff in 2005 was 5.2 inches at the Jugland Dam from 36.99 inches of precipitation for the entire year. The runoff in 1973 was reported to be 13.2 inches over the watershed, with 41.4 inches of precipitation.
In-stream flow-weighted mean TP concentrations ranged from 0.10 to 0.53 mg/L, within the range of values observed in minimally impacted streams in the Western Corn Belt Plains Ecoregion 0.96 to 0.01 mg/L (McCollor & Heiskary, 1993). In-stream total suspended sediment TSS concentrations ranged from 9 to 55 mg/L. In-stream OP concentrations ranged from 0.02 to 0.41 mg/L.
Watershed phosphorus loading in the Shell Rock River Watershed District ranges from .09 lbs/ acre in the Mud Creek tributary to 0.60 lbs/ acre in the I-90 Tributary to Albert Lea Lake. This range is within or below the range of TP export values observed in the Lower Mississippi River Basin: 0.3 to 0.7 lbs per acre (Mulla et. al, 2002.).
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In-stream bacteria concentrations periodically exceeded the acute bacteria standard of 2,000 cfu/100 mL in seven of ten streams monitored. The summer geometric mean bacteria concentrations exceeded the chronic standard of 200 cfu/ 100 mL in the same streams.
Lake water quality observed in 2006 in Albert Lea Lake, Fountain Lake, and Pickerel Lake was generally poor. Average summer surface TP concentrations in Western Corn Belt Plains Ecoregion Lakes typically range from 121 to 176 μg/L. Comparatively, TP concentrations in District lakes monitored in 2006 are 240 μg/L in Fountain Lake, 309 μg/L in Albert Lea Lake, and 348 μg/L in Pickerel Lake. In-lake bacteria concentrations were low.
The range of Ecoregion summer mean Chlorophyll-a concentrations is 30 to 80 μg/L. Average summer surface Chlorophyll-a concentrations in Albert Lea Lake, Fountain Lake and Pickerel Lake are 159 μg/L, 145 μg/L, and 186 μg/L respectively, higher than Ecoregion summer means.
The average summer Secchi depth in Albert Lea was 0.8 feet, below the published range of summer means (1.6 to 3.3 feet). Average summer Secchi depths in Fountain Lake and Pickerel Lake were 1.3 feet and 0.5 feet respectively, lower than published means. However, the long term trend is improving water quality in Albert Lea Lake is due to removal of the waste water treatment plant discharges. Additional years of monitoring will provide insight into recent trends. Analysis of watershed loads indicate that reduction in both internal and external loading is necessary to further improve water quality in District lakes.
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1.0 Introduction
The Shell Rock River Watershed District began an annual water quality-monitoring program soon after their formation in 2003. The program’s focus is on collecting baseline data from the major water features: Albert Lea Lake, Fountain Lake, Pickerel Lake, and their tributaries and the Shell Rock River. Data are collected to: • Assess long-term water quality trends within the District • Select achievable water quality management goals • Track the District’s progress towards management goals
In 2006, the District’s major lakes, Albert Lea Lake, Fountain Lake, and Pickerel Lake were monitored for total phosphorus, ortho phosphorus, water clarity (Secchi Depth) and Chlorophyll- a. The Shell Rock River was monitored for flow, nutrients, sediments and bacteria at the outlet of Albert Lea Lake and at Glenville. Eight other tributaries to the District’s major lakes were also monitored for the same parameters. Figure 1.1 shows monitoring locations.
Data, findings, and analyses are presented to aid District Staff, Managers and citizens in establishing water quality management goals for the District: • Lake and stream water quality in the Shell Rock River Watershed District is compared to the range of mean values observed in the Western Corn Belt Plains Ecoregion as a means to assess relative water quality and provide a framework to set management goals. • Nutrient loads to lakes are calculated to assess the relative sources of nutrients in the District and identify “hot spots.” • Recommendations are made to guide future monitoring and analyses.
The report is presented in four sections: Hydrology, Water Quality, Conclusions, and Recommendations. Water quality report cards are presented in Appendix A.
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2.0 Hydrology
2.1 PRECIPITATION
Precipitation in the Shell Rock River Watershed District during January to October 2006 ranged from 2.8 to 3.3 inches below the 30-year January-October average of 30.15 for Albert Lea. Precipitation was measured at two stations: southwest of Pickerel Lake, and at the Albert Lea Wastewater Treatment Plant. (Table 2.1 and Figures 2.1 and 2.2).
The largest precipitation event in 2006, 3.37 inches, was recorded August 2, 2006. This precipitation event was reflected in an increase in stream flows measured at most stations August 3, 2006. Total precipitation levels were above normal February through May. Annual totals fell below normal in Late June and remained below normal.
The two precipitation stations in the Shell Rock River Watershed District are located near the center of the watershed. Given the scale of the Shell Rock River Watershed District, 246 square miles, additional precipitation stations should be established through volunteer precipitation monitoring to better define the distribution of precipitation across the watershed. This will aide in future hydrologic and hydraulic modeling efforts as well as capital improvement design. The SRRWD has included plans to expand the hydrologic monitoring across the watershed in future monitoring efforts.
Note: The 2006 precipitation record reflects only two stations that reported data January to October as compared with three stations in 2005 reporting January to December. An addendum to this report will be filed with final precipitation records for 2006.
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2.2 RUNOFF
Stream flow was measured at 10 locations two to three times per month from May to September in 2006. The runoff for each sub-watershed was calculated based on these discrete flow measurements. This method provides an approximation of watershed runoff and nutrient loadings. When the sampling dates are comparable, it allows for comparisons of relative nutrient loadings.
Runoff over the watershed ranges from 4.2 inches at Mud Creek (a tributary watershed to Pickerel Lake), to 7.4 inches at Goose Creek (Table 2.2).
Outflow from Jugland Dam, the outlet of Albert Lea Lake was equal to 5.6 inches over the upper watershed. Outflow at Fountain Lake was 6.4 inches. This resulted from 27.11 inches of precipitation recorded January-October. By comparison, 2005 runoff was 5.2 and 3.8 inches at Jugland Dam and Fountain Lake respectively, resulting from 36.99 inches of annual precipitation. Extreme precipitation and runoff was reported in 1973: 13.2 inches of runoff resulting from 41.4 inches of precipitation. Early spring runoff in 2006, as well as improved monitoring methods may have contributed to higher runoff values observed.
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3.0 Water Quality
3.1 STREAMS
In-stream concentrations of TP, OP, bacteria, and TSS were measured at ten sites, generally on the same days that flow measurements were collected. These data were used to calculate in- stream loading and flow-weighted mean concentrations. Subwatershed delineations were used to calculate areal watershed loading. Stream report cards are presented as Appendix A.
3.1.1 TP
In-stream TP concentrations range from 0.10 to 0.53 mg/L. The median TP concentration for minimally impacted streams in the Western Corn Belt Plains Ecoregion is 0.20 mg/L (McCollor & Heiskary, 1993). In-stream TSS concentrations range from 9 to 55 mg/L. The median TSS concentration for minimally impacted streams in the Western Corn Belt Plains Ecoregion is 20 mg/L. In-stream OP concentrations range from 0.02 to 0.41 mg/L.
Watershed phosphorus loading in the Shell Rock River Watershed District ranges from .09 lbs/ acre in the Mud Creek tributary to 0.60 lbs/ acre in the I-90 Tributary to Albert Lea Lake. Based on an analysis of phosphorus indices, TP export in the Lower Mississippi River Basin ranges from 0.3 to 0.7 lbs per acre (Mulla et. al, 2002.).
Table 3.1 shows in-stream concentrations, loads, and watershed loading for total phosphorus, ortho-phosphorus, and total suspended solids. Figures 3.1 –3.4 compare in-stream nutrient and sediment loads, and loads per acre across the watershed and from year to year (2005-2006).
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3.1.2 TSS
Goose Creek, Schoff Creek and the Shell Rock River at Glenville had the highest TSS loadings for both 2005 and 2006. I-90 spiked considerably in 2006, up to 0.60 lbs/ acre. However I-90 only contributes <1% of the TP to Albert Lea Lake.
3.1.3 BACTERIA
In-Stream bacteria concentrations periodically exceeded the acute bacteria standard of 2,000 cfu/100 mL in seven of ten streams monitored. The summer geometric mean bacteria concentrations exceeded the chronic standard of 200 cfu/ 100 mL in the same streams (Figure 3.5, Table 3.2).
3.2 LAKES
Surface concentrations of TP, OP, and Chlorophyll-a were measured at six sites on three lakes, eight times from May to September during 2006. From these data, average summer surface concentrations were calculated. These data are also used to model the expected nutrient loads to the lakes. Modeled loads are compared with the gauged loads observed in District streams. Lake report cards are presented as Appendix A.
3.2.1 MONITORING RESULTS
Lake water quality was measured at three locations in Albert Lea Lake, two locations in Fountain Lake, and one location in Pickerel Lake in 2006. Surface water samples were analyzed for TP,
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OP, and Chlorophyll-a. Secchi depths were also measured. Table 3.3 and Figures 3.6 - 3.9 compare mean summer surface water quality in District lakes with Ecoregion values.
Average summer surface TP concentration in Western Corn Belt Plains Ecoregion Lakes typically range from 121 to 176 μg/L according to an MPCA study by Heiskary and Wilson. For well mixed (shallow) lakes such as Albert Lea Lake, Pickerel Lake and Fountain Lake, the median concentration in WCBP Ecoregion lakes is 141 μg/L. The MPCA’s recommended standard for shallow lakes in the WCBP Ecoregion is 91 μg/L. Comparatively, TP concentrations in District lakes monitored in 2006 are 240 μg/L in Fountain Lake, 309 μg/L in Albert Lea Lake, and 348 μg/L in Pickerel Lake.
The range of Ecoregion summer mean Chlorophyll-a concentrations is 30 to 80 μg/L. Comparatively, average summer surface Chlorophyll-a concentrations in Albert Lea Lake, Fountain Lake and Pickerel Lake are 159 μg/L, 145 μg/L, and 186 μg/L respectively, higher than Ecoregion summer means.
The average summer Secchi depth in Albert Lea was 0.8 feet, below the published range of summer means (1.6 to 3.3 feet). Average summer Secchi depths in Fountain Lake and Pickerel Lake were 1.3 feet and 0.5 feet respectively, also lower than published means.
Lake Report Cards in Appendix A show seasonal variation in TP and OP, and year to year variation in TP. Total phosphorus concentrations are generally near the Ecoregion guideline in May and early June in Albert Lea and Fountain Lake, but TP concentrations climb to maximum values of 490 μg/L and 466 μg/L respectively in late summer. Concentrations of TP in Pickerel Lake range from 500 μg/L in early July to 200 μg/L in late summer.
The percent of TP that is readily available for algal use, or OP varies seasonally (Figure 3.10). It is generally lower in early summer, increasing later in the summer. This is potentially an indication of summer internal loading.
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In-lake bacteria concentrations are shown in Figure 3.11. Concentrations were generally below state chronic standards with one exception in Fountain Lake in mid summer.
In Albert Lea Lake and Fountain Lake, TP concentrations show a decreasing trend (Lake Report Cards, Appendix A). Historical average summer concentrations in Fountain Lake (1940 to 1960) ranged from 200 to 350 μg/L (excluding a single high measurement collected in the 1940’s), compared with current concentrations of 240 μg/L. However, the frequency of monitoring was low, and the calculated summer average likely has a large standard deviation. Historic TP concentrations in Albert Lea Lake topped out just under 2,500 μg/L TP in 1950 before declining steadily to their current level of 309 μg/L.
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4.0 Conclusions
1. Precipitation for 2006 from January to October was below normal. A 3.37-inch precipitation event (roughly the 5 year precipitation event) occurred on August 2, 2006.
2. Runoff over the watershed at Albert Lea Lake Outlet and at Glenville was 5.6 and 6.2 inches respectively.
3. Watershed phosphorus loading in the Shell Rock River Watershed District ranges from .09 lbs/ acre in the Mud Creek tributary to 0.60 lbs/ acre in the I-90 Tributary to Albert Lea Lake. Based on an analysis of phosphorus indices, TP export in the Lower Mississippi River Basin ranges from 0.3 to 0.7 lbs per acre (Mulla et. al, 2002.).
4. Goose Creek, Schoff Creek and the Shell Rock River at Glenville had the highest TSS loadings for both 2005 and 2006. I-90 spiked considerably in 2006, up to 0.60 lbs/ acre. However I-90 only contributes <1% of the TP to Albert Lea Lake.
5. In-stream bacteria concentrations periodically exceeded the acute bacteria standard of 2,000 cfu/.100 mL in seven of ten streams monitored. The summer geometric mean bacteria concentrations exceeded the chronic standard of 200 cfu/ 100 mL in the same streams. In-lake bacteria concentrations are low.
6. Summer mean total phosphorus and chlorophyll-a concentrations for Albert Lea Lake, Fountain Lake, and Pickerel Lake are higher than those generally observed for lakes within the Western Corn Belt Plains Ecoregion. In general, Secchi depths are below the range of those observed in other lakes in the Western Corn Belt Plains Ecoregion. TP concentrations are comparable to those observed in 2005, chlorophyll- a concentrations were much higher in 2006 than 2005, while Secchi Depths were lower in 2006 than 2005.
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5.0 Recommendations
1. Recruit Citizen Precipitation Recorders to expand precipitation data coverage for the District. Grant funding requested for lake sampling will allow the District to re-direct funds towards this type of monitoring.
2. Recruit citizens to measure and record lake elevations daily and Secchi depths several times per month, this funding request was included in a 2006 grant submittal.
3. Consider adding volatile suspended solids to lake outlet monitoring in 2007 to investigate whether the TSS is organic (algae) or inorganic (sediment from rough fish).
4. Setting lake management goals through individual lake management plans will guide future monitoring and additional analysis.
5. Define hydrology, and subwatersheds for Pickerel Lake and sample the effluent from the sod farm. Develop a target sampling plan to determine the nutrient budget.
6. Initiate TSS source tracking Goose Creek and Schoff Creek sub-watersheds.
7. Initiate an urban storm sewer sampling program to quantify direct watershed loading to Albert Lea Lake and Fountain Lake.
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6.0 References
Canfield, D.E., Jr., and Bachmann, R.W. 1981. “Prediction of Total Phosphorus Concentrations, Chlorophyll-a, and Secchi Depths in Natural and Artificial Lakes”. Can. J. Fish. Aquatic Sci. 38:414-423.
McCollor and Heiskary. 1993. “Selected Water Quality Characteristics of Minimally Impacted Streams from Minnesota’s Seven Ecoregions.” Minnesota Pollution Control Agency Water Quality Division.
Mulla et. al. 2002 “Estimating Phosphorus Losses from Agricultural Lands for MPCA’s Detailed Assessment of Phosphorus Sources to Minnesota Watersheds” University of Minnesota.
Heiskary, S. “Simplified lake Eutrophication Modeling: using the Ecoregion Based Model of MIN LEAP” http://www.pca.state.mn.us/water/pubs/mnleap-overview.pdf
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Tables
Table 2.1
Shell Rock River Watershed District 2006 Water Quality Data Analysis
2006 Precipitation Records for Shell Rock River Watershed
2006 Monthly Precipitation (inches) 1971-2000 Month Normal Pickerel Lake Albert Lea January 0.87 0.2 0.35 February 0.67 1.05 0.32 March 2.02 2.31 2.32 April 3.39 7.3 5.68 May 4.18 2.4 1.84 June 4.79 2.55 3.12 July 4.15 1.9 1.94 August 4.51 4.99 6.04 September 3.05 3.2 3.84 October 2.52 1.43 1.43 November ------December ------Total: 30.15 27.33 26.88
T:\1323\08\2006 Annual Monitoring\Precipitation_2006 Wenck Associates, Inc. Table 2.2
Shell Rock River Watershed District 2006 Water Quality Data Analysis
2006 Runoff over Shell Rock River Watershed District
Tributary 2006 2005 2006 Drainage Runoff Runoff Runoff ID Location Area [ac] [ac-ft] [inches] [inches] SBC01 Bancroft Creek 22,002 8,214 5.4 4.5 SFL01 Fountain Lake Dam 62,061 32,909 3.8 6.4 SGC01 Goose Creek 3,607 2,221 5.1 7.4 SMC01 Mudd Creek at CR 71 4,320 1,523 4.9 4.2 SNE01 I-90 2,108 881.96 2.7 5.0 SPL01 Peter Lund Creek 18,448 9,309 4.1 6.1 SSC01 Schoff Creek (Arena Rd) 7,887 3,702 3.9 5.6 Shell Rock River (Albert SSR01 Lea Lake Outlet) 90,560 41,890 5.2 5.6 Shell Rock River SSR02 (Glenville) 95,519 49,232 5.8 6.2 SWC01 Wedge Creek 21,065 10,810 3.7 6.2
Note: Concentration is a flow-weighted mean
T:\1323\08\2006 Annual Monitoring\[Stream Load_Calc.xls]Table 2.2
Wenck Associates, Inc. Table 3.1
Shell Rock River Watershed District 2006 Water Quality Data Analysis
2006 In-Stream Flow-Weighted Mean Concentrations, Loads, and Watershed Loading
Total Phosphorus Ortho-Phosphorus Total Suspended Solids
Tributary Drainage Runoff Runoff Load Export Load Export Export ID Location Area [ac] [ac-ft] [inches] [mg/L] [lbs] [lbs/ac] [mg/L] [lbs] [lbs/ac] [mg/L] Load [lbs] [lbs/ac]
SBC01 Bancroft Creek 22,002 8,214 4.5 0.10 2,140 0.10 0.07 1,543 0.07 9 208,567 9 SFL01 Fountain Lake Dam 62,061 32,909 6.4 0.14 12,553 0.20 0.04 3,185 0.05 32 2,853,535 46 SGC01 Goose Creek 3,607 2,221 7.4 0.22 1,312 0.36 0.09 560 0.16 14 87,513 24 SMC01 Mudd Creek at CR 71 4,320 1,523 4.2 0.10 402 0.09 0.05 222 0.05 18 73,191 17 SNE01 I-90 2,108 882 5.0 0.53 1,261 0.60 0.41 979 0.46 31 75,205 36 SPL01 Peter Lund Creek 18,448 9,309 6.1 0.10 2,564 0.14 0.07 1,894 0.10 12 299,410 16
SSC01 Schoff Creek (Arena Rd) 7,887 3,702 5.6 0.25 2,472 0.31 0.07 750 0.10 55 556,518 71 Shell Rock River (Albert SSR01 Lea Lake Outlet) 90,560 41,890 5.6 0.15 16,981 0.19 0.02 1,903 0.02 36 4,107,597 45 Shell Rock River SSR02 (Glenville) 95,519 49,232 6.2 0.33 44,356 0.46 0.15 19,692 0.21 29 3,940,885 41
SWC01 Wedge Creek 21,065 10,810 6.2 0.12 3,600 0.17 0.07 1,939 0.09 21 629,596 30
Note: Concentration is a flow-weighted mean
Wenck Associates, Inc. Table 3.2
Shell Rock River Watershed District 2006 Water Qualtiy Data Analysis
2006 In-Stream Bacteria Geometric Mean
Number of Samples >2,000 Fecal Coliform Summer ID Station cfu/100 mL Geometric Mean (cfu/100 mL) SBC01 Bancroft Creek 1 398 SFL01 Fountain Lake Dam 0 74 SGC01 Goose Creek 3 620 SMC01 Mudd Creek at CR 71 1 360 SNE01 I-90 2 587 SPL01 Peter Lund Creek 3 1036 SSC01 Schoff Creek (Arena Rd) 1 389 Shell Rock River (Albert Lea SSR01 Lake Outlet) 0 57 SSR02 Shell Rock River (Glenville) 0 128 SWC01 Wedge Creek 2 762
Bacteria Standard: 1. The geometric mean of 5 samples in a calendar month may not exceed 200 CFU/ 100 ml 2. Single readings may not exceed 2,000
T:\1323\08\2006 Annual Monitoring\[Shell Rock Stream Data_2006_Compiled.xls]Table 3.2
Wenck Associates, Inc. Table 3.3
Shell Rock River Watershed District 2006 Water Quality Data Analysis
2006 Average Summer Lake Water Quality
Summer Averages (June-Sept) Site TP (μg/L) OP (μg/L) Chlor-A (μg/L) Secchi (ft) Expected concentrations for well 30 - 80 (range of 1.6 -3.3 (range of summer mixed WCBP Lakes 141 (median) -- summer means) means) LAL01 301 72 138 0.78 LAL02 293 45 160 0.86 LAL03 334 85 177 0.74 Albert Lea Lake Average 309 67 159 0.79 LFL01 252 104 124 1.39 LFL02 227 63 166 1.27 Fountain Lake Average 240 83 145 1.33 Pickerel Lake 348 60 186 0.46
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Figures
SBC01
SWC01 !( 90 SNE01 § !( SGC01 ¦¨ LFL01 !( !( ^_ ^_ SFL01 SSC01 ^_ SPL01 SMC01 !( !( ?! Albert Lea LFL02 !( !( LAL01 ^_ LAL03 ^_ ¤£65 ^_ LPL01 SSR01 ?! ^_ Pickerel Lake !(
LAL02
^_ SSR02 35 ¦¨§ !( 69 ^_ ¤£
Legend ^_ Lake Sampling Locations !( Stream Sampling Stations ?! Precipitation Locations Subwatersheds Roads Project Area
2 1 0 2 Miles
Mxd: L:\1323\08\mxd\Monitoring Locations.mxd ³ Last Modified: 11/14/2006 3:09:54 PM T H G I
R NOV 2006
SHELL ROCK RIVER WATERSHED DISTRICT Y P O C 2006 Monitoring Locations and Major Water Features Wenck Associates, Inc. 1800 Pioneer Creek Center Figure 1.1 of Shell Rock River Watershed District Environmental Engineers Maple Plain, MN 55359-0429 Figure 2.1
2006 Monthly Precipitation for the Shell Rock River Watershed District
Shell Rock River Watershed District 2006 Water Quality Data Analysis 8 1971-2000 Normal Pickerel Lake Albert Lea 7.3
7
6.0 6 5.7
5.0 5 4.8 4.5 4.2 4.2 4 3.8
3.4 3.2 3.1 3.1
Precipitation (inches) 3 2.6 2.5 2.4 2.3 2.3 2.0 1.9 2 1.8 1.9 1.4 1.4 1.1 1 0.9 0.7 0.4 0.3 0.2 0 January February March April May June July August September October T:\1323\01\Annual MOnitoring\2005\[Precipitation.xls]Figure 2.1
Wenck Associates, Inc. Figure 2.2
2006 Cumulative Precipitation for the Shell Rock River Watershed District
Shell Rock River Watershed District 2006 Water Quality Data Analysis 35
1971-2000 Normal Pickerel Lake Albert Lea 30.15 30
27.33 25.9 26.88 25 25.45 22.7
20 21.61 17.71
15.81
15 13.26 15.57 Precipitation (inches) 10.86 13.63
10 8.67 10.51
5 3.56
1.25 0.2 2.99 0 0.35 0.67 January February March April May June July August September October T:\1323\01\Annual MOnitoring\2005\[Precipitation.xls]Figure 22
Wenck Associates, Inc. Figure 3.1
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Phosphorus Loadings (2005-2006) 50,000
2005 TP Load 44,356 45,000 2006 TP Load
40,000
35,000
30,000 28,266
25,000
TP Load (lbs) 20,000 18,183 16,981 15,000 12,553
10,000 9,016
5,000 3,600 2,772 3,051 2,140 1,819 2,564 2,108 2,472 1,4261,312 1,261 392 402 171 0 Bancroft Fountain Goose Creek Mudd Creek I-90 Peter Lund Schoff Creek Shell Rock Shell Rock Wedge Creek Lake Dam at CR 71 Creek (Arena Rd) River (Albert River Creek Lea Lake (Glenville) Outlet)
T:/132/08/Report/Stream Load_Calc/Figure 3.1 Wenck Associates, Inc. Figure 3.2
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Watershed Phosphorus Loadings (2005-2006)
0.70 2005 TP Load per Acre 2006 TP Load per Acre 0.60 0.60
0.50 0.46
0.40 0.40 0.36
0.31 0.30 0.30 0.27 TP Load (lbs/acre) 0.20 0.20 0.20 0.19 0.17 0.15 0.14 0.14 0.13 0.10 0.09 0.09 0.10 0.10 0.08
0.00 Bancroft Fountain Goose Creek Mudd Creek I-90 Peter Lund Schoff Creek Shell Rock Shell Rock Wedge Creek Lake Dam at CR 71 Creek (Arena Rd) River (Albert River Creek Lea Lake (Glenville) Outlet)
T:/132/08/Report/Stream Load_Calc/Figure 3.2 Wenck Associates, Inc. Figure 3.3
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Total Suspended Solids Loadings (2005-2006) 4,500,000 2005 TSS Load 4,107,597 3,940,885 4,000,000 2006 TSS Load
3,500,000 3,322,328 3,381,543
3,000,000 2,853,535
2,500,000
2,000,000 1,840,792 TSS Load (lbs) TSS Load
1,500,000 1,289,916 1,069,805 1,000,000 847,962 629,596 556,518 500,000 346,303 299,410 208,567 101,269 63,861 87,513 73,191 51,580 75,205 0 Bancroft Fountain Goose Mudd Creek I-90 Peter Lund Schoff Creek Shell Rock Shell Rock Wedge Creek Lake Dam Creek at CR 71 Creek (Arena Rd) River (Albert River Creek Lea Lake (Glenville) Outlet)
T:/132/08/Report/Stream Load_Calc/Figure 3.3 Wenck Associates, Inc. Figure 3.4
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Watershed Total Suspended Solids Loadings (2005-2006)
120
2005 TSS Load per Acre 108 2006 TSS Load per Acre 100
80 71
59 60 51 46 45 41 TSS Load (lbs/acre) TSS Load 40 37 36 35 30 30 24 23 24 19 18 17 20 16 9
0 Bancroft Fountain Goose Creek Mudd Creek I-90 Peter Lund Schoff Creek Shell Rock Shell Rock Wedge Creek Lake Dam at CR 71 Creek (Arena Rd) River (Albert River Creek Lea Lake (Glenville) Outlet)
T:/132/08/Report/Stream Load_Calc/Figure 3.4 Wenck Associates, Inc. Figure 3.5
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Bacteria Concentrations
2006 Bacteria Values SBC01
0 10000 4700 1000 1180 630640 800 301 260 180 160 100 80 mL) 50 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SFL01
0 10000
1000 550 180 140 100 100 120 120 80 mL) 60 20 20 10 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SGC01
0 10000 7,0009200 2300 1000 860 410 410 480 170 100 120 100 mL) 40 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
T:\1323\08\2006 Annual Monitoring\[Shell Rock Stream Data_2006_Compiled.xls]Figure 3.5 Page 1 of 4 Wenck Associates, Inc. Figure 3.5
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Bacteria Concentrations
2006 Bacteria Values SMC01
0 10000 3900 1000 640 330 340 300 210 190 200 160 100 150 mL)
10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SNE01 0 10000 6100 2000 1000 1300 590 570 740 160 220
mL) 100 60 20 10 Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SPL01 10000 0 7700 6000 1600 2100 1000 680 720 450 640 500 440 100 130 mL)
10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
T:\1323\08\2006 Annual Monitoring\[Shell Rock Stream Data_2006_Compiled.xls]Figure 3.5 Page 2 of 4 Wenck Associates, Inc. Figure 3.5
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Bacteria Concentrations
2006 Bacteria Values SSC01 10000 0 3400 1000 1200 800 620 490 400 240 300 100
mL) 70 40 40 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SSR01 10000 0
1000 380 560 100 80 80 mL) 60 40 40 30 20 10 10 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
2006 Bacteria Values SSR02
0 10000
1500 1000 1330 940
210 240 160 100 140 mL) 40 20 10 10 10
Fecal Coliform (cfu/ 10 (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
T:\1323\08\2006 Annual Monitoring\[Shell Rock Stream Data_2006_Compiled.xls]Figure 3.5 Page 3 of 4 Wenck Associates, Inc. Figure 3.5
Shell Rock River Watershed District 2006 Water Quality Data Analysis
In-Stream Bacteria Concentrations
2006 Bacteria Values SWC01 ) 10000 7400 7200
1000 930 1340 560 530 360 410 380 100 60 20 10
Fecal Coliform (cfu/ 100 mL (cfu/ Coliform Fecal 1 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Bacteria (cfu/100 mL) Chronic standard: 200 cfu/100 mL Accute Standard: 2,000 cfu/100 mL
T:\1323\08\2006 Annual Monitoring\[Shell Rock Stream Data_2006_Compiled.xls]Figure 3.5 Page 4 of 4 Wenck Associates, Inc. Figure 3.6
2006 Mean Summer Total and Ortho Phosphorus for Lakes
Shell Rock River Watershed District 2006 Water Quality Data Analysis
400
Total Phosphorus 348 350 Ortho Phosphorus Ecoregion MedianTP for Well Mixed Lakes (132 ug/L) 309 300
250 240 g/L) μ
200
Concentration( 150
100 83 67 60
50
0 Albert Lea Lake Fountain Lake Pickerel Lake T:\1323\01\Annual MOnitoring\2005\[Lake Sampling 2005_Compiled.xls]Summer Averages Wenck Associates, Inc. Figure 3.7
2006 Mean Summer Chlorophyll-a for Lakes
Shell Rock River Watershed District 2006 Water Quality Data Analysis
200 186 Chlorophyll-a Typical Range of Summer Mean values, 30 to 80 ug/L 180
159 160 145
140
120 g/L) μ
100
80 Concentration (
60
40
20
0 Albert Lea Lake Fountain Lake Pickerel Lake
T:\1323\01\Annual MOnitoring\2005\[Lake Sampling 2005_Compiled.xls]Summer Averages Wenck Associates, Inc. Figure 3.8 Historical Mean Summer Chlorophyll-a
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Albert Lea Lake Historical Summer Average Chlorophyll-a Concentrations 200 Summer Average Chlorophyll-A Ecoregion Guideline 30 ug/L 160
120
80
40 Chlorophyll-a (ug/L) Chlorophyll-a
0 1973 1992 2004 2005 2006 Year
Fountain Lake Historical Summer Average Chlorophyll-a Concentrations 200 Summer Average Chlorophyll-A 160 Ecoregion Guideline 30 ug/L
120
80
40 Chlorophyll-a (ug/L) Chlorophyll-a 0 1973 1992 2004 2005 2006 Year
Pickerel Lake Historical Summer Average Chlorophyll-a Concentrations 250 Summer Average Chlorophyll-A Ecoregion Guideline 30 ug/L 200
150
100
50 Chlorophyll-a (ug/L) Chlorophyll-a 0 2004 2005 2006 Year
T:\1323\08\2006 Annual Monitoring\Lakes_Chlorophyll2Lakes_Chlorophyll2Fig 3.8 Figure 3.9
2006 Mean Summer Secchi Depth for Lakes
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Albert Lea Lake Fountain Lake Pickerel Lake 0.00
0.50 0.46
0.79 1.00
1.50 1.33
2.00 Secchi Depth(feet)
2.50
3.00
3.50
Secchi Depth Typical Range of Summer Mean Values, 1.6 -3.3 ft T:\1323\01\Annual MOnitoring\2005\[Lake Sampling 2005_Compiled.xls]Summer Averages Wenck Associates, Inc. Figure 3.10
2006 Ortho to Total Phosphorus Ratio
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Albert Lea Lake 80% LAL01 60% LAL02 LAL03 40%
20% OP/TP Ratio % Ratio OP/TP
0% Mar-06 May-06 Aug-06 Nov-06
Fountain Lake 80% LFL02 60% LFL01
40%
20% OP/TP Ratio % Ratio OP/TP
0% May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Pickerel Lake 80%
60%
40%
20% OP/TP Ratio % Ratio OP/TP
0% May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
T:\1323\08\2006 Annual Monitoring\[Shell Rock Lake Data_2006_Compiled.xls]Fig 3.10
Wenck Associates, Inc. Figure 3.11
2006 Lake Fecal Coliform Bacteria Concentrations
Shell Rock River Watershed District 2006 Water Quality Data Analysis
Albert Lea Lake 500 LAL01 LAL02 400 LAL03
300
200
100
Fecal Coliform (#/100mL) Coliform Fecal 0 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Fountain Lake 500 LFL01 400 LFL02 300
200
100
0 Fecal Coliform (#/100mL) Coliform Fecal May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Pickerel Lake 500
400
300
200
100
Fecal Coliform (#/100mL) Coliform Fecal 0 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Wenck Associates, Inc. Appendix A
2006 Water Quality Report Cards Albert Lea Lake: Classified as Eutrophic/ Hypereutrophic
Fountain Lake Dam I-90 62,100 acres 2,108 acres 10% of Load <1 % of Direct Watershed Load Runoff (7,943 ac), Internal Load/ Atmospheric Load Peter Lund 88% of Load 18,448 acres 2% of Load Tributary Sub watershed (shaded) Lake Data Surface Area: Jugland Dam 2,453 acres 90,560 acres Maximum Depth: 6.0 feet Subwatershed Area: 90,560 acres Mean Depth: 3.5 feet 2006 Discharge Volume: 5.6 inches
Albert Lea Lake Historical Mean Summer Secchi Depth 1972 1977 1978 1991 1993 1995 1997 2000 2004 2006 0.0 0.5 1.0 1.5 2.0 2.5
Secchi (ft) Depth 3.0 3.5 Annual Summer Mean Secchi Depth MnLEAP Predicted Secchi=1.3 ft WCP Ecoregion Observed Range of Summer Means 1.6 to 3.3 ft
Albert Lea Lake Historical Mean Summer TP Concentrations Summer Mean TP Concentrations 3,000
) Mn LEAP Prediction Median TP for Polymictic Lakes in the WCP Ecoregion 2,500 MPCA Proposed Guideline for Shallow Lakes in WCP 2,000 Power (Summer Mean TP Concentrations) 1,500 1,000 500
Total Phosphorus (ug/L 0 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 Shell Rock River Watershed District Wenck Nov 2006 Albert Lea Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A1 Environmental Engineers Maple Plain, MN 55359 Albert Lea Lake MPCA Proposed Shallow Lake Ecoregion 2006 Water Quality Summary Graphs guidelines for in the Western Corn Belt Plains Total Phosphorus (TP): < 90 ug/L Chlorophyll-a: < 30 ug/L Secchi Depth: > 0.7 meter
Albert Lea Lake Phosphorus
600 500 400 300 (ug/L) 200 100 0
Phosphorus Concentration Concentration Phosphorus 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date LAL01-TP LAL02-TP LAL03-TP Ecoregion Guideline
Albert Lea Lake Secchi Depth
Date 05/01/06 06/01/06 07/02/06 08/02/06 09/02/06 10/03/06 11/03/06 0.0 1.0 2.0 3.0 LAL01-Secchi
Secchi DepthSecchi (ft) 4.0 LAL02-Secchi 5.0 LAL03-Secchi Ecoregion Guideline Albert Lea Lake Chlorophyll-a
350 LAL01-Chlor-a n 300 LAL02-Chlor-a 250 LAL03-Chlor-a 200 Ecoregion Guideline
(ug/L) 150 100
Chlor-a Concentratio Chlor-a 50 0 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date
Shell Rock River Watershed District Wenck Nov 2006 Albert Lea Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A1 Environmental Engineers Maple Plain, MN 55359 Fountain Lake: Classified as Eutrophic to Hypereutrophic
Bancroft Creek Wedge Creek Goose Lake 22,000 acres 21,100 acres 3,610 acres 12% of Load 14% of Load 6% of Load
Direct Watershed Runoff (un gauged) (7,000 acres) Tributary Sub watershed 58% of Load (shaded)
Arena Creek Fountain Lake Dam Lake Data 7.900 acres 62,100 acres Surface Area: 555 Acres 9% of Load Maximum Depth: 9.5 Feet Subwatershed Area: 62,700 acres Mean Depth: 6.0 Feet Discharge Volume: 6.4 inches
Fountain Lake Historical Mean Summer Secchi Depth
1973 1977 1985 1986 1987 1989 1991 1992 2004 2005 2006 0 0.5 1 1.5 2 2.5
Secchi Depth (ft) Depth Secchi 3 Average of All Bays 3.5 Mn LEAP Prediction WCP Ecoregion Observed Range of Summer Means 1.6 to 3.3 ft
Fountain Lake Historical Mean Summer TP Concentrations Summer Mean TP Concentration 600 Ecoregion Median TP for Polymictic Lakes in WCP, 140 ug/L Mn LEAP Prediction 301 ug/L
g/L) 500 Power (Summer Mean TP Concentration) 400 300 200 100
Total Phosphorus ( 0 1940 1950 1960 1970 1980 1990 2000 2010 Shell Rock River Watershed District Wenck Nov 2006 Fountain Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A2 Environmental Engineers Maple Plain, MN 55359 Fountain Lake MPCA Proposed Shallow Lake Ecoregion 2006 Water Quality Summary Graphs guidelines for in the Western Corn Belt Plains Total Phosphorus (TP): < 90 ug/L Chlorophyll-a: < 30 ug/L Secchi Depth: > 0.7 meter
Fountain Lake Phosphorus
500 400 300
(ug/L) 200 100 0 Phosphorus Concentration Concentration Phosphorus 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date LFL01-TP LFL02-TP Ecoregion Guideline
Fountain Lake Secchi Depth
Date 05/01/06 06/01/06 07/02/06 08/02/06 09/02/06 10/03/06 11/03/06 0.0
1.0
2.0
3.0
Secchi Depth (ft) Depth Secchi 4.0 LFL01-Secchi LFL02-Secchi Ecoregion Guideline 5.0 Fountain Lake Chlorophyll-a
) 350 LFL01-Chlor-a 300 LFL02-Chlor-a Ecoregion Guideline 250 200 150 100 50
Chlor-a Concentration (ug/ L (ug/ Concentration Chlor-a 0 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date Shell Rock River Watershed District Wenck Nov 2006 Fountain Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A2 Environmental Engineers Maple Plain, MN 55359 Pickerel Lake:Classified as Hypereutrophic
Arena Creek 7,887 acres
Tributary Sub watershed Mud Creek (shaded) 4,320 acres Lake Data 402 lbs Direct Watershed Runoff (un Surface Area: 715 acres gauged=3,566 Maximum Depth: 5.5 feet acres Subwatershed Area: 7887 acres Mean Depth: 3.8 feet Outflow Volume: 4.2 inches
Pickerel Lake Historical Mean Summer Secchi Depth 2004 2005 2006 0.00 0.50 1.00 1.50 2.00 2.50
Secchi Depth (ft) Depth Secchi 3.00 Average of All Bays 3.50 Mn LEAP Prediction WCP Ecoregion Observed Range of Summer Means 1.6 to 3.3 ft
Pickeral Lake Historical Mean Summer TP Concentrations 400 ) 300
200 Summer Mean TP Concentrations 100 Mn LEAP Prediction Median TP for Polymictic Lakes in the WCP Ecoregion MPCA Proposed Guideline for Shallow Lakes in WCP 0 2004 2005 2006 Total Phosphorus (ug/L Phosphorus Total Shell Rock River Watershed District Wenck Nov 2006 Pickerel Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A3 Environmental Engineers Maple Plain, MN 55359 Pickerel Lake MPCA Proposed Shallow Lake Ecoregion 2006 Water Quality Summary Graphs guidelines for in the Western Corn Belt Plains Total Phosphorus (TP): < 90 ug/L Chlorophyll-a: < 30 ug/L Secchi Depth: > 0.7 meter
Pickerel Lake Phosphorus
600 500 400 300 (ug/L) 200 100
Phosphorus Concentration Concentration Phosphorus 0 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date LPL01-TP Ecoregion Guideline
Pickerel Lake Secchi Depth
Date 05/01/06 06/01/06 07/02/06 08/02/06 09/02/06 10/03/06 11/03/06 0.0
1.0
2.0
3.0
Secchi Depth (ft) Depth Secchi 4.0 LPL01-Secchi
5.0 Ecoregion Guideline
Pickerel Lake Chlorophyll-a LPL01-Chlor-a 300 Ecoregion Guideline 250 200 150
Chlor-a Chlor-a 100 50
Concentration L) (ug/ 0 5/2/2006 6/1/2006 7/2/2006 8/1/2006 9/1/2006 10/1/2006 11/1/2006 Date Shell Rock River Watershed District Wenck Nov 2006 Pickerel Lake Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A3 Environmental Engineers Maple Plain, MN 55359 Bancroft Creek Site: SBC01- Bancroft Creek at Plaza St 2006 Stream Flow and Water Quality Summary SBC01-Bancroft Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 22,002 22,002 Runoff (inches) 5.37 4.50 Total Phosphorus FWMC (mg/L) (1) 0.10 0.10 Load (lbs): 2,772 2,140 Areal Load (lbs/acre) (2) 0.13 0.10 Orthophosphorus FWMC (mg/L) 0.06 0.07 Load (lbs): 1,645 1,543 Areal Load (lbs/acre) 0.07 0.07 Total Suspended Solids FWMC (mg/L) 48 9 Load (lbs): 1,289,916 208,567 Areal Load (lbs/acre) 59 9
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SBC01 120
100
80
60 40 Discharge (cfs) 20
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Bancroft Creek Environmental Engineers Maple Plain, MN 55359 Figure A4 Bancroft Creek Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SBC01- Bancroft Creek at Plaza St Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L
2005 ConcentrationSBC01 Phosphorus Graphs
0.50 TP OP 0.40 Ecoregion Guideline
0.30
0.20
0.10 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SBC01 Total Suspended Solids 50 TSS Ecoregion Guideline 40
30
20 TSS (mg/L) 10
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SBC01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Bancroft Creek Environmental Engineers Maple Plain, MN 55359 SBC01 Fountain Lake Dam Site: SFL01- Fountain Lake Dam 2006 Stream Flow and Water Quality Summary SFL01-Fountain Lake Dam
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 62,061 62,061 Runoff (inches) 3.82 6.40 Total Phosphorus FWMC (mg/L) (1) 0.17 0.14 Load (lbs): 9,016 12,553 Areal Load (lbs/acre) (2) 0.15 0.20 Orthophosphorus FWMC (mg/L) 0.03 0.04 Load (lbs): 1,631 3,185 Areal Load (lbs/acre) 0.03 0.05 Total Suspended Solids FWMC (mg/L) 34 32 Load (lbs): 1,840,792 2,853,535 Areal Load (lbs/acre) 30 46
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SFL01 500.00
400.00
300.00
200.00
Discharge (cfs) Discharge 100.00
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Figure A5 Fountain Lake Dam Environmental Engineers Maple Plain, MN 55359 Fountain Lake Dam Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SFL01- Fountain Lake Dam Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L
2006SFL01 Concentration Phosphorus Graphs 0.50 TP OP 0.40 Ecoregion Guideline
0.30
0.20
0.10 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SFL01 Total Suspended Solids 75 TSS Ecoregion Guideline 60
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SFL01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Fountain Lake Dam Environmental Engineers Maple Plain, MN 55359 Figure A5 Goose Creek Site: SGC01- Goose Creek at Bridge Ave 2006 Stream Flow and Water Quality Summary SGC01-Goose Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 3,607 3,607 Runoff (inches) 5.13 7.40 Total Phosphorus FWMC (mg/L) (1) 0.34 0.22 Load (lbs): 1,426 1,312 Areal Load (lbs/acre) (2) 0.40 0.36 Orthophosphorus FWMC (mg/L) 0.18 0.09 Load (lbs): 741 560 Areal Load (lbs/acre) 0.21 0.16 Total Suspended Solids FWMC (mg/L) 15 14 Load (lbs): 63,861 87,513 Areal Load (lbs/acre) 18 24
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SGC01 30
24
18
12 Discharge (cfs) 6
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Goose Creek Environmental Engineers Maple Plain, MN 55359 Figure A6 Goose Creek Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SGC01- Goose Creek at Bridge Ave Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L
2006 ConcentrationSGC01 Phosphorus Graphs
0.75 TP 0.60 OP Ecoregion Guideline 0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus 0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SGC01 Total Suspended Solids 75 TSS Ecoregion Guideline 60
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SGC01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Goose Creek Environmental Engineers Maple Plain, MN 55359 Figure A6 Mud Creek Site: SMC01- Mud Creek at Co Rd 71 2006 Stream Flow and Water Quality Summary SMC01-Mud Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 4,320 4,320 Runoff (inches) 4.87 4.20 Total Phosphorus FWMC (mg/L) (1) 0.08 0.10 Load (lbs): 392 402 Areal Load (lbs/acre) (2) 0.09 0.09 Orthophosphorus FWMC (mg/L) 0.05 0.05 Load (lbs): 233 222 Areal Load (lbs/acre) 0.05 0.05 Total Suspended Solids FWMC (mg/L) 21 18 Load (lbs): 101,269 73,191 Areal Load (lbs/acre) 23 17
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SMC01 25
20
15
10 Discharge (cfs) 5
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Mud Creek Environmental Engineers Maple Plain, MN 55359 Figure A7 Mud Creek Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SMC01- Mud Creek at Co Rd 71 Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs SMC01 Phosphorus
0.75 TP OP 0.60 Ecoregion Guideline
0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SMC01 Total Suspended Solids
75 TSS 60 Ecoregion Guideline
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SMC01 Total Dissolved Oxygen
15 DO Water Quality Standard 12
9
6 DO (mg/L) 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Mud Creek Environmental Engineers Maple Plain, MN 55359 Figure A7 Peter Lund Creek Site: SPL01- Peter Lund Creek at T-281 2006 Stream Flow and Water Quality Summary SPL01-Peter Lund Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 18,448 18,448 Runoff (inches) 4.09 6.10 Total Phosphorus FWMC (mg/L) (1) 0.11 0.10 Load (lbs): 1,819 2,564 Areal Load (lbs/acre) (2) 0.10 0.14 Orthophosphorus FWMC (mg/L) 0.08 0.07 Load (lbs): 1,402 1,894 Areal Load (lbs/acre) 0.08 0.10 Total Suspended Solids FWMC (mg/L) 20 12 Load (lbs): 346,303 299,410 Areal Load (lbs/acre) 19 16
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SPL01
150
120
90
60 Discharge (cfs)Discharge 30
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Peter Lund Creek Environmental Engineers Maple Plain, MN 55359 Figure A8 Ecoregion Guidelines* Peter Lund Creek Total Phosphorus (TP): < 0.20 mg/L Site: SPL01- Peter Lund Creek at T-281 Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs SPL01Phosphorus 0.75 TP OP 0.60 Ecoregion Guideline
0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SPL01 Total Suspended Solids 75 TSS Ecoregion Guideline 60
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SPL01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) DO 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Peter Lund Creek Environmental Engineers Maple Plain, MN 55359 Figure A8 Schoff Creek (Arena Rd) Site: SSC01- Schoff Creek at Arena Road 2006 Stream Flow and Water Quality Summary SSC01-Schoff Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 7,887 7,887 Runoff (inches) 3.92 5.60 Total Phosphorus FWMC (mg/L) (1) 0.30 0.25 Load (lbs): 2,108 2,472 Areal Load (lbs/acre) (2) 0.27 0.31 Orthophosphorus FWMC (mg/L) 0.04 0.07 Load (lbs): 251 750 Areal Load (lbs/acre) 0.03 0.10 Total Suspended Solids FWMC (mg/L) 121 55 Load (lbs): 847,962 556,518 Areal Load (lbs/acre) 108 71
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SSC01
50
40
30
20 Discharge (cfs)Discharge 10
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Schoff Creek Environmental Engineers Maple Plain, MN 55359 Figure A9 Schoff Creek (Arena Rd) Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SSC01- Schoff Creek at Arena Road Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs
SSC01Phosphorus 0.75 TP OP 0.60 Ecoregion Guideline
0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSC01 Total Suspended Solids 125 TSS Ecoregion Guideline 100
75
50 TSS (mg/L) 25
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSC01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) DO 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Schoff Creek Environmental Engineers Maple Plain, MN 55359 Figure A9 Northeast Creek Site: SNE01- Northeast Creek at I-90 Rest Stop 2006 Stream Flow and Water Quality Summary SNE01-Northeast Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 2,108 2,108 Runoff (inches) 2.67 5.00 Total Phosphorus FWMC (mg/L) (1) 0.13 0.53 Load (lbs): 171 1,261 Areal Load (lbs/acre) (2) 0.08 0.60 Orthophosphorus FWMC (mg/L) 0.12 0.41 Load (lbs): 154 979 Areal Load (lbs/acre) 0.07 0.46 Total Suspended Solids FWMC (mg/L) 41 31 Load (lbs): 51,580 75,205 Areal Load (lbs/acre) 24 36
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SNE01 20
16
12
8 Discharge (cfs) 4
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Northeast Creek Environmental Engineers Maple Plain, MN 55359 Figure A10 Northeast Creek Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SNE01- Northeast Creek at I-90 Rest Stop Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs
SNE01Phosphorus 0.75 TP OP 0.60 Ecoregion Guideline
0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SNE01 Total Suspended Solids 75 TSS Ecoregion Guideline 60
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SNE01 Total Dissolved Oxygen 15 DO Water Quality Standard 12
9
6 DO (mg/L) DO 3
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Northeast Creek Environmental Engineers Maple Plain, MN 55359 Figure A10 Shell Rock River at Albert Lea Lake Outlet Site: SSR01- Shell Rock River 2006 Stream Flow and Water Quality Summary SSR01-Albert Lea Lake Outlet
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 90,560 90,560 Runoff (inches) 5.22 5.60 Total Phosphorus FWMC (mg/L) (1) 0.17 0.15 Load (lbs): 18,183 16,981 Areal Load (lbs/acre) (2) 0.20 0.19 Orthophosphorus FWMC (mg/L) 0.01 0.02 Load (lbs): 1,373 1,903 Areal Load (lbs/acre) 0.02 0.02 Total Suspended Solids FWMC (mg/L) 31 36 Load (lbs): 3,322,328 4,107,597 Areal Load (lbs/acre) 37 45
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SSR01 600
500
400
300
200 Discharge (cfs) 100
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Shell Rock River at Albert Lea Lake Outlet Environmental Engineers Maple Plain, MN 55359 Figure A11 Shell Rock River at Albert Lea Lake Outlet Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SSR01- Shell Rock River Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs
SSR01Phosphorus 0.75 TP OP 0.60 Ecoregion Guideline
0.45
0.30
0.15 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSR01 Total Suspended Solids 125 TSS Ecoregion Guideline 100
75
50 TSS (mg/L) 25
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSR01 Total Dissolved Oxygen 20
15
10 DO (mg/L) 5 DO Water Quality Standard 0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Shell Rock River at Albert Lea Lake Outlet Environmental Engineers Maple Plain, MN 55359 Figure A11 Shell Rock River at Glenville Site: SSR02- Shell Rock River at Glenville 2006 Stream Flow and Water Quality Summary SSR02-Shell Rock River at Glenville
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 95,519 95,519 Runoff (inches) 5.79 6.20 Total Phosphorus FWMC (mg/L) (1) 0.23 0.33 Load (lbs): 28,266 44,356 Areal Load (lbs/acre) (2) 0.30 0.46 Orthophosphorus FWMC (mg/L) 0.13 0.15 Load (lbs): 16,753 19,692 Areal Load (lbs/acre) 0.18 0.21 Total Suspended Solids FWMC (mg/L) 27 29 Load (lbs): 3,381,543 3,940,885 Areal Load (lbs/acre) 35 41
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SSR02 700 600 500 400 300 200 Discharge (cfs) Discharge 100 0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Shell Rock River at Glenville Environmental Engineers Maple Plain, MN 55359 Figure A12 Shell Rock River at Glenville Ecoregion Guidelines* Total Phosphorus (TP): < 0.20 mg/L Site: SSR02- Shell Rock River at Glenville Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs
SSR02Phosphorus 2.00 TP OP 1.60 Ecoregion Guideline
1.20
0.80
0.40 Phosphorus (mg/L) Phosphorus
0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSR02Total Suspended Solids 75 TSS Ecoregion Guideline 60
45
30 TSS (mg/L) 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SSR02 Total Dissolved Oxygen
20
15
10 DO (mg/L) DO 5 DO Water Quality Standard 0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Shell Rock River at Glenville Environmental Engineers Maple Plain, MN 55359 Figure A12 Wedge Creek Site: SWC01- Wedge Creek 2006 Stream Flow and Water Quality Summary
SWC01-Wedge Creek
Stream Water Quality and Loading Summary
2005 2006 Drainage area (acres) 21,065 21,065 Runoff (inches) 3.73 6.20 Total Phosphorus FWMC (mg/L) (1) 0.17 0.12 Load (lbs): 3,051 3,600 Areal Load (lbs/acre) (2) 0.14 0.17 Orthophosphorus FWMC (mg/L) 0.06 0.07 Load (lbs): 1,150 1,939 Areal Load (lbs/acre) 0.05 0.09 Total Suspended Solids FWMC (mg/L) 60 21 Load (lbs): 1,069,805 629,596 Areal Load (lbs/acre) 51 30
Notes: 1. FWMC= Flow-weighted mean concentration 2. Phosphorus export coefficients from ag land in the Cedar River Basin range from 0.21 lbs/ acre to 0.64 lbs/ acre
2006 Flow Record SWC01 200
160
120
80
Discharge (cfs) Discharge 40
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Wedge Creek Environmental Engineers Maple Plain, MN 55359 Figure A13 Wedge Creek Ecoregion Guidelines* Site: SWC01-Wedge Creek Total Phosphorus (TP): < 0.20 mg/L Total Suspended Solids (TSS): < 20 mg/L 2006 Stream Flow and Water Quality Summary Standards**: Dissolved Oxygen (DO): >5 mg/L 2006 Concentration Graphs SWC01 Phosphorus
TP 0.40 OP Ecoregion Guideline 0.30
0.20
0.10 Phosphorus (mg/L) Phosphorus 0.00 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SWC01 Total Suspended Solids
TSS 75 Ecoregion Guideline 60
45
30 TSS (mg/L) TSS 15
0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
SWC01 Total Dissolved Oxygen
15
12
9
6 DO (mg/L) 3 DO Water Quality Standard 0 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06
*Ecoregion TP & TSS guidelines are median 1986-1992 annual values for Western Corn Belt Plains streams. Source: McCollor & Heiskary, 1993 **Standards shown for DO are Chronic Aquatic Life Standards for Class 2B Waters. Source: MN Rules 7050.0222 Subpart 4. Shell Rock River Watershed District Wenck Nov 2006 Wenck Associates, Inc. 1800 Pioneer Creek Center Wedge Creek Environmental Engineers Maple Plain, MN 55359 Figure A13