Rathbun Lake Monthly Water Quality Monitoring near Honey Creek Resort Park (HCRP)

Pre-Construction Phase April 2006 Event 1

Donna S. Lutz Water Quality Specialist Assistant Scientist Department of Civil, Construction and Environmental Engineering Iowa State University

Project Introduction

Water quality monitoring of Rathbun Reservoir in the vicinity of the planned Honey Creek Resort Park (HCRP) is being undertaken to gauge whether construction activities are having an adverse affect on lake water quality and, if necessary, adapt management of stormwater. HCRP is being planned by TSP architectural firm (http://www.teamtsp.com/) with final resort management by Regency Hotel Management (http://www.regency- mgmt.com/index.php).

Background Information

Rathbun Reservoir is located on the Chariton River in Appanoose County, Iowa. The reservoir began operation in 1969 and is managed by the Kansas City Corps of Engineers District. The reservoir’s authorized purposes include: flood damage reduction, recreation, fish and wildlife, water quality, water supply and navigation (See Appendix A for reservoir and dam data). Rathbun supplies water to Rathbun Regional Water Association, one of the largest rural water districts in the nation. The normal conservation pool is 904 feet NGVD (National Geodetic Vertical Datum) with a full flood pool elevation at 926 feet NGVD. The historical maximum pool was 927.17 feet NVGD on July 28, 1993 and the minimum pool was 898.38 feet NVGD on January 26, 1995 (see Appendix B). Major inflows into the reservoir include the Chariton River (USGS 06903400) with a long-term average flow of 119 ft/m3 and the South Fork Chariton River (USGS 06903700) with a long-term average flow of 122 ft/m3 (see Appendix C for USGS station records). The long-term average annual precipitation at Rathbun is 36.31 in., ranging from a minimum of 18.06 in. in 1988 to 56.86 in. in 1982 (see Appendix D). Long-term precipitation records at Albia, Centerville and Chariton are listed in Appendix E.

Iowa DNR licenses land from the Corps for wildlife management. The IDNR also operates the Rathbun Fish Hatchery and a fisheries research facility, located below the dam. Now, the IDNR is developing the Honey Creek Destination State Park, which will be Iowa's first State Park to offer a full range of overnight accommodations and a broader range of outdoor recreational activities for the whole family. The planned facility development includes a 108-room lodge, conference center, indoor aquatic center, 18-hole golf course and over 30 family and group cabins. In addition, the normal array of state park facilities will be provided: Semi-enclosed picnic shelters, paved multi-purpose trails, hiking/nature trails, boat ramp, boat-docking facilities, and an upscale RV campground. These facilities will be located on an 850-acre tract of land on the north shore of Rathbun Lake. The existing Honey Creek State Park (an additional 850 acres) lies across the bay, and development plans include a pedestrian trail bridge to link the two parcels. IDNR’s original site plan is attached as Appendix F).

There are 10 ecoregions and subecoregions within the state of Iowa (IDNR http://wqm.igsb.uiowa.edu/wqa/ecoregions.html ). Rathbun Reservoir is located in the Loess Flats and Till Plains ecoregion (#40) which is characterized by: Deep to moderate loess deposits over glacial till and dark, shallow soils are characteristic of the Loess Flats and Till Plains ecoregion. Loess deposits generally increase to the south, especially near the Missouri River. Several streams have headwaters in this region, and the topography varies from flat to moderately hilly. Valley sides are not steep, with slopes generally less than 10%. The Chariton River area is a more dissected and hilly area within this region. It lacks glacial till in many places and has a greater drainage density and more woody vegetation in stream reaches than in other parts of the ecoregion. Natural wetlands occur along the Grand River and several other rivers in the region. Soils are inherently fertile, but use can be limited due to severe erosion. Land use includes areas of cropland, pasture in the valleys and on upland slopes, and bands of woodland. Corn and soybeans are the major crops.

Other entities are conducting water quality investigations in the area and an effort will be made to share information. The Rathbun Land and Water Alliance in cooperation with the Iowa Department of Natural Resources, Iowa State University (Ecology, Evolution and Organismal Biology Department’s Limnology Lab), and US Army Corps of Engineers conducts water quality monitoring for pesticides, nutrients, bacteria, and sediment in Rathbun Lake and the lake's tributaries. The monitoring program provides the Alliance and its partners an understanding of water quality conditions in Rathbun Lake and watershed to support decision-making regarding the protection and management of the lake for its multiple uses which include drinking water supply, recreation, fish and wildlife habitat, flood damage reduction, downstream water quality improvement, and storage for supplementing navigational flows. The monitoring program consists of monthly and event sample collection and analysis from 15 tributary sites in the watershed, four sites in the lake, and one site at the lake outlet in the Chariton River. Monitoring results indicate that continued high sediment, nutrient, and pesticide loading in Rathbun Lake and its tributaries poses a serious threat to the water supply, recreational, and habitat uses of these water bodies. http://www.rlwa.org/3_waterqualitymonitoringprogram.html

Rathbun Lake Monitoring for HCRP April 2006 – Event 1

Introduction

Water samples were collected for the first time on April 18, 2006, at several sites on Rathbun Lake to monitor base-line conditions before construction begins at the Honey Creek Resort Park (HCRP). Samples were collected at three locations as shown on the following map. Sites RL-1 and RL-2 are located approximately 75 feet from the lakeshore on either side of the peninsula where the HCRP lodge will be located. Site RL-1 is located in an unnamed creek embayment just to the west of the resort area. Site RL-2 is located in the Honey Creek embayment just east of the resort area. Site RL-3 is located in the main lake down-lake from the other two sites. Monthly monitoring at these locations is intended to alert developers, in a timely manner, to any contamination of the lake that may be due to construction activities. This monitoring is supplemental to stormwater pollution abatement and monitoring activities that are also being undertaken.

Construction Activities in Progress

Pre-construction phase, the only activity has been surveying.

Hydrology, Climatology and Sampling Conditions

On April 18 the lake level was 901.77 feet NGVD (COE internet). The inflow from the Chariton River as measured near Chariton, Iowa (USGS gage 06903400) was 1 ft3/s and the peak flow over the last month was 27 ft3/s on April 1. The inflow from the South Fork Chariton River as measured near Promise City, Iowa (USGS gage 06903700) was 6 ft3/s and the peak flow over the last month was 77 ft3/s on April 1. The outflow from Rathbun Reservoir (USGS gage 06903900) was 20 ft3/s, ranging from 3 ft3/s to 200 ft3/s over the last month. See accompanying discharge graphs.

Recent weather has been warmer and drier than usual. Precipitation at Rathbun Dam (NWS-COOP Station RAD14) over the previous 72 hours in 24 hour increments was 0.01 inch, 0.46 inch and 0.00 inch and precipitation over the last month was 2.84 inches. The latest significant rain event (>0.5 inch) occurred on April 2 (0.61 in). See accompanying precipitation data table. Weather conditions during sample collection were partly cloudy and breezy with temperatures in the mid-70s (oF).

Boating pressure in the area is measured by the number of boat trailers in the existing Honey Creek ramp area. Upon arrival on April 18 there were 12 boat trailers.

Field Results

Water samples were collected between 1115 and 1310 CDT. Field tests were conducted at the site or within 24 hours of collection. Lake water appeared greenish-yellow with Secchi disc depths of approximately 0.7 m. The water depths at Sites RL-1, RL-2 and RL-3 were 6 meters (m), 4.5 m and 8.75 m, respectively. Discrete depth samples were collected at two depths (0.25 m under the surface and 1m from the bottom) for water temperature, pH, dissolved oxygen, total alkalinity, total hardness, turbidity and specific conductance. Results from the above parameters were similar with depth at each site and between sites indicating the reservoir was well mixed. The only discernible differences between sites were noted in pH and turbidity, with slightly lower pH at Site RL-3 (main lake) and slightly greater turbidity at RL-1 (east embayment). Dissolved oxygen concentrations were similar, as noted above, and ranged between 9.5 mg/l (ppm) and 10.0 mg/l (95% to 99% saturation). All results from field analyses are listed in accompanying data tables.

Lab Results

The Environmental Engineering Research Laboratory, part of Iowa State University’s Department of Civil, Construction and Environmental Engineering, conducted all remaining chemical and biological analyses. All results are listed in accompanying data tables. A six-foot PVC sampler was used to obtain integrated depth samples for solids and nutrient samples. Samples for all other parameters (bacteria, metals, organics and pesticides) required direct collection into sample bottles and thus were collected from just under the water surface.

Integrated water column samples ƒ Solids- A suite of solids parameters was analyzed. Solids results were similar at all sites, with total solids ranging from 193 mg/l (RL-1) to 184 mg/l (RL-2). Total volatile solids (organic material) comprised about 50% of the total solids concentration.

ƒ Nutrients- Phosphorus and nitrogen parameter results were nearly identical at all sites. Nutrient results are fairly low compared to Iowa’s other reservoirs (Saylorville and Red Rock reservoirs on the Des Moines River and Coralville Reservoir on the Iowa River). Total nitrogen and total phosphorus at the three Rathbun sites averaged 0.83 mg/l and 0.02 mg/l, respectively. Total nitrogen concentrations at the surface of the main basins of Saylorville, Red Rock and Coralville reservoirs during April averaged 11.9 mg/l, 11.7 mg/l and 13.3 mg/l. Total phosphorus concentrations at Saylorville, Red Rock and Coralville Reservoirs during April averaged 0.10 mg/l, 0.15 mg/l and 0.22 mg/l, respectively.

Surface samples • Chlorophyll-Chlorophyll pigments are measured as an indication of algal productivity and biomass. Concentrations of viable chlorophyll a were relatively low being 9 mg/m3, 12 mg/m3 and 7 mg/m3 at Sites RL-1, RL-2 and RL-3, respectively.

• Bacteria- Total fecal coliform and Escherichia coli (E coli) bacteria concentrations were all near zero. The state standard for E coli bacteria in recreational waters (Class A1) states that the geometric mean (not less than 5 samples in 30 days) should not exceed 126 organisms/100 ml and a single sample should not exceed 235 organisms/100 ml.

• Metals- Samples were analyzed for the trace metals copper, lead and zinc. There were no results for total lead above the 5 µg/l detection limit. Total copper results were similar at the three sites averaging 3 µg/l. Total zinc was the most variable trace metal with concentrations of 52 µg/l, 28 µg/l and 38 µg/l, at Sites RL-1, RL-2 and RL-3, respectively.

• Organics- Contamination of water resources by petroleum products (gasoline, diesel and oil) or f can be detected by the parameters referred to as “oil and grease”, “BTEX” and “MTBE”. The oil and grease method refers to materials soluble in n-hexane, such as biological lipids and mineral hydrocarbons. The BTEX group of contaminants consists of benzene, ethyl benzene, toluene, and three isomers of xylene. These organic chemicals make up a significant percentage of petroleum products (about 20% in gasoline) and are known to have adverse health affects. MTBE (methyl tertiary-butyl ether), a fuel additive, is also quantified. No oil and grease was detected. BTEX concentrations at Sites RL-1, RL-2 and RL-3 were 0.8 µg/l (ppb), 2.0 µg/l, and 0.6 µg/l, respectively. RL-2 is located in the Honey Creek embayment down-lake from the Honey Creek Park boat ramp. There was no MTBE detected.

• Pesticides- During the pre-construction phase the only pesticides to be monitored are atrazine and dieldrin. Atrazine is being monitored since the reservoir is already impaired by atrazine. Dieldrin is being measured as a marker for older pesticides that could be transported to the lake during land alteration even without additional use. No increase in atrazine or dieldrin concentrations is anticipated however. In the future additional herbicides and insecticides will be monitored once they are being used in landscaping activities at HCRP golf course and park. The glass pesticide sample bottle collected at Site RL-1 was broken on transit to the laboratory and therefore there are no pesticide results for Site RL-1. No detectable dieldrin concentrations were noted at RL-2 and RL-3. The concentration of atrazine at these sites was 0.7 µg/l (ppb).

Location of Rathbun Reservoir monitoring sites for Honey Creek Resort Park stormwater monitoring project.

Major inflows to Rathbun Reservoir, March 17 thru April 18, 2006

Outflow from Rathbun Reservoir, March 17 thru April 18, 2006

Precipitation for the previous month (March 17 thru April 18, 2006.

Rathbun Dam Albia Centerville Chariton (NWS- Date (SchoolNet) (SchoolNet) (SchoolNet) COOP) Monitoring Event 3/17/2006 0.00 0.00 0.00 0.00 3/18/2006 0.00 0.00 0.00 0.00 3/19/2006 0.00 0.00 0.00 0.00 3/20/2006 0.00 0.00 0.00 0.00 3/21/2006 0.04 0.02 0.02 0.17 3/22/2006 0.00 0.01 2.00 T 3/23/2006 0.00 0.00 0.00 M 3/24/2006 0.00 0.00 0.00 0.00 3/25/2006 0.00 0.00 0.00 0.00 3/26/2006 0.00 0.00 0.00 0.00 3/27/2006 0.37 0.29 0.68 0.10 3/28/2006 0.00 0.00 0.00 0.38 3/29/2006 0.00 0.00 0.00 0.00 3/30/2006 0.37 0.47 0.56 0.00 3/31/2006 0.00 0.00 0.00 0.35 4/1/2006 0.00 0.00 0.00 0.00 4/2/2006 0.44 0.73 0.66 0.61 4/3/2006 0.01 1.55 0.00 0.45 4/4/2006 0.00 0.00 0.00 0.00 4/5/2006 0.00 0.00 0.00 0.00 4/6/2006 0.14 0.13 0.20 0.14 4/7/2006 0.01 0.00 0.02 0.17 4/8/2006 0.00 0.00 0.00 M 4/9/2006 0.00 0.00 0.00 0.00 4/10/2006 0.00 0.00 0.00 0.00 4/11/2006 0.02 0.05 0.13 0.00 4/12/2006 0.01 0.28 0.00 M 4/13/2006 0.00 0.03 0.00 0.00 4/14/2006 0.00 0.00 0.00 0.00 4/15/2006 0.15 0.49 0.07 0.00 4/16/2006 0.10 0.15 0.00 0.46 4/17/2006 0.00 0.00 0.00 0.01 4/18/2006 0.04 0.02 0.22 0.00 Rathbun Lake 1 M- missing data T- trace amount Rathbun Lake Monitoring for HRCP Development Sampling Conditions and Field Parameters

Week: 1 Date: April 18, 2006

Inflow Chariton River (cfs) 1 24 hr precip 0.01 Inflow SF Chariton R. (cfs) 6 48 hr precip 0.46 Outflow Chariton R. (cfs) 20 72 hr precip 0.00 Elevation (ft NGVD) 901.77 from Rathbun Dam

Location surface surface surface Station Number RL-1 RL-2 RL-3 Time (CDT, CST) 1115 1215 1310 Water Temp (deg C) 13.9 14.0 13.9 Cloud Cover (%) 10 30 40 Thermocline Depth (m) 0 0 0 Max Depth (m) 6.00 4.50 8.75 Secchi Depth (m) 0.70 0.79 --- pH 8.19 8.31 8.00 Total Alkalinity * 106 107 106 Diss. Oxygen (mg/l) 9.55 10.01 9.49 Total Hardness * 114 117 117 Turbidity (NTU) 14 9 10 Conductance 278 281 281 Comments:

*mg/l as CaCO3

Vertical Water Column Data RL-1 RL-2 RL-3 Surface to Bottom Difference Temperature Difference -0.1 -0.1 0 pH Difference -0.06 0.01 0 DO Difference -0.06 0.02 -0.13 Conductivity Difference -3 1 0 note: negative number indicates the bottom value was higher than the surface value Report of Chemical Analysis Environmental Engineering Research Laboratory 123 Town Engineering Bldg. Iowa State University Ames, Iowa 50011 (515) 294-8579

Project: Rathbun Lake 1 Report Date: 5/19/2006 Sample Collection Date: 4/18/2006 Sample Submittal Date: 4/19/2006 By: ds/dsl

Units Sample Type RL-1 RL-2 RL-3 Total Solids mg/l IDS 193 184 191 Fixed Solids mg/l IDS 113 114 115 Volatile Solids mg/l IDS 100 90 96 Total Suspended Solids (TSS) mg/l IDS 11 12 12 Volatile Suspended solids (VSS) mg/l IDS 232

Ammonia mg/l IDS 0.04 0.03 0.05 Nitrate + Nitrite mg/l IDS 0.07 0.08 0.08 TKN mg/l IDS 0.72 0.73 0.70 Organic Nitrogen mg/l IDS 0.68 0.70 0.65 Total Nitrogen mg/l IDS 0.79 0.81 0.78 Total Phosphrus mg/l as P IDS 0.02 0.02 0.01 Total Phosphate mg/l as PO4 IDS 0.06 0.06 0.03 Ortho Phosphorus mg/l as P IDS <0.01 <0.01 <0.01 Ortho Phosphate mg/l as PO4 IDS <0.03 <0.03 <0.03

MTBE µg/l Surface grab <0.25 <0.25 <0.25 BTEX µg/l Surface grab 0.8 2.0 0.6 Oil and Grease mg/l Surface grab <5 <5 <5 PAH µg/l Surface grab

Chlorophyll a mg/m 3 Surface grab 11 14 9 Chlorophyll b mg/m 3 Surface grab 001 Chlorophyll c mg/m 3 Surface grab 222 Corr Chlorophyll a mg/m 3 Surface grab 9127 Pheophytin a mg/m 3 Surface grab 325 Fecal Coliform Bacteria #/100 ml Surface grab 1<11 E. Coli Bacteria #/100 ml Surface grab 1<11

Total Copper µg/l Surface grab <5 <5 <5 Total Lead µg/l Surface grab 334 Total Zinc µg/l Surface grab 534

Atrazine µg/l Surface grab --- 0.73 0.69 Dieldrin µg/l Surface grab --- <0.01 <0.01 Notes: IDS is integrated depth samples mg/l equals ppm µg/l equals ppb LTDL - less than detection limit Report of Chemical Analysis Environmental Engineering Research Laboratory

123 Town Engineering Bldg. Iowa State University Ames, Iowa 50011 (515) 294-8579

Project: Rathbun Lake 1 Report Date: 5/19/2006 Sample Collection Date: 4/18/2006 Sample Submittal Date: 4/19/2006 By: ds/dsl

RL-1 RL-2 RL-3 BTEX µg/l Surface grab 0.8 2.0 0.6 benzene 0.4 1.0 0.3 toluene 0.4 1.0 0.3 ethyl benzene <0.1 <0.1 <0.1 m xylene <02 <02 <02 o&p xylene <0.2 <0.2 <0.2

Appendices

Appendix A: Reservoir and Dam Data

Appendix B: Historical Elevation Record

Appendix C: USGS Flow Records Chariton River near Chariton South Fork Chariton River near Promise City Rathbun Reservoir Chariton River below Rathbun

Appendix D: Long-term Precipitation at Rathbun Dam

Appendix E: Long-term Precipitation at Albia, Centerville and Chariton

APPENDIX A: Reservoir and Dam Data

DAM and RIVER BASIN

Rathbun Lake was constructed and is operated by the U.S. Army Corps of Engineers. Located at Chariton River mile marker 142, approximately 7 miles north of Centerville Iowa, in Appanoose County, it is one of the largest lakes in Iowa. The lake was constructed to control flooding, provide recreation opportunities, abate stream pollution, fish and wildlife enhancement, and maintain minimum stream flow on the Chariton, Missouri, and Mississippi Rivers.

The Chariton and South Fork of the Chariton River are the major sources of water flowing into Rathbun Lake. The Chariton River Basin drains a total or 2,309 square miles, of which 549 square miles are located above the dam. The basin runs generally from north to south. The drainage area has a maximum width of 25 miles and an average width of 12 miles.

Rathbun Lake has a flood control pool of 20,948 surface acres and a multipurpose pool of 11,013 surface acres. Rathbun Lake averages about one mile in width and has 155 miles of shoreline at the top of multipurpose pool elevation. At full pool elevation, the lake has 319 miles of shoreline and extends generally westward a distance of about 21 miles into Lucas, Wayne, and Monroe Counties.

The dam consists of a rolled earthfill embankment with an uncontrolled spillway located approximately 3,000 feet westward of the right abutment. Discharges enter a concrete stilling basin. Additional pertinent data is listed below:

PERTINENT DATA GENERAL

Flood Control Act of 1954 Authorization (Public Law 83-780) Maximum Discharge of Record near Damsite 21,800 c.f.s. 31 March 1960 Channel Capacity Initial damage 1,500 c.f.s. Below dam Appreciable damage 2,000 c.f.s. Cost (Dam and Reservoir) $26,500,000 (1969)

DAM AND EMBANKMENT

Type Rolled earthfill Fill Quantity 5,500,000 cubic yards Crest Elevation 946.00 Top Width 30 feet Maximum Base Width 800 feet Length 10,120 feet Maximum Height above streambed 100 feet Freeboard 5.8 feet Closure Date 29 December 1967 Storage Began 21 November 1969 Multipurpose Level Reached 10 October 1970

RESERVOIR

Multipurpose pool From elevation 844.0 to 904.0 Flood control pool From elevation 904.0 to 926.0 Surcharge From elevation 926 to 940.0 Multipurpose pool storage 205,359 acre-feet Flood control pool storage 346,297 acre-feet Surcharge storage 349,514 acre-feet

SPILLWAY

Type Uncontrolled Notch Crest Elevation 926.0 Width 500 feet Discharge Capacity at Elevation 940 45,600 c.f.s. Side slopes 1 on 3

From Kansas City Corps http://www.nwk.usace.army.mil/rathbun/dam.htm APPENDIX B: Historical Elevation Record

RATHBUN LAKE http://www.nwk.usace.army.mil/rathbun/ratn.html FULL FLOOD POOL ELEVATION 926.0 MULTIPURPOSE POOL ELEVATION 904.0 FLOOD CONTROL STORAGE (AC-FT) 346297 CONTRIBUTING DRAINAGE AREA (Sq.Mi.) 549 MAXIMUM ANNUAL MINIMUM YEAR DATE DATE ELEV. ANNUAL ELEV. 1967 1 Nov 867.00 1968 26,27 Apr 878.04 1969 12 Jul 871.50 1970 12 Oct 904.68 7 Oct 901.42 1971 3 Mar 907.76 17 Oct 902.82 1972 19 Sep 906.38 10 Mar 901.85 1973 9 May 918.15 23 Sep 904.52 1974 16 Jun 909.88 22 Dec 901.99 1975 30,31 Mar 906.26 1 Jan 902.00 1976 30 Apr 909.90 23 Jun 901.23 1977 4 Mov 913.90 9 Feb 902.61 1978 16 May 916.10 12 Nov 900.81 1979 6 Mar 912.30 23 Feb 902.49 1980 20 Jun 911.81 11-14 Feb 902.98 1981 21 Jul 917.58 17 Feb 903.83 1982 22 Jun 924.46 1 Jan 904.03 1983 1 Jan 916.72 16 Oct 900.80 1984 18 Jun 909.42 11 Dec 899.80 1985 25 Oct 911.62 17,19 Feb 899.79 1986 22 May 913.00 19,20 Feb 902.90 1987 31 Aug 908.70 19 Dec 904.00 1988 1-3 Mar 905.10 26 Dec 900.90 1989 1 Jan 900.96 31 Dec 899.71 1990 30 Jun 916.06 2,3 Jan 899.69 1991 17 May 916.75 11 Apr 903.87 1992 20 Sep 922.84 4 Mar 904.01 1993 28 Jul 927.17 31 Dec 900.06 1994 8 Mar 901.34 20 Nov 898.39 1995 10 Jul 917.25 26 Jan 898.38 1996 8 Jun 918.25 28 Apr & 31 Dec 903.94 1997 11 May 909.02 12 Oct 903.63 1998 21 Jun 918.32 29,30 Jan 904.10 1999 13 Jun 913.95 30 Dec 903.15 2000 13 Jul 904.58 30 May 902.32 2001 22 Jun 914.07 11, 12 Jan 903.32 2002 17 May 910.39 30, 31 Dec 901.81 2003 11-13 July 903.56 5 Mar 901.39 2004 1 Sep 908.77 8 Jan 902.78 2005 24 Apr 907.02 30 Dec 902.13 Appendix C: USGS Flow Records

CHARITON RIVER BASIN

06903400 CHARITON RIVER NEAR CHARITON, IA

LOCATION.--Lat 40°57'07", long 93°15'35", in SW1⁄4 NE1⁄4 sec.15, T.71 N., R.21 W., Lucas County, Hydrologic Unit 10280201, on right bank 15 ft downstream from bridge on County Highway S43, 0.1 mi downstream from Wolf Creek, 5.0 mi southeast of Chariton, and 63.2 mi upstream from Iowa- Missouri State line.

DRAINAGE AREA.--182 mi2. PERIOD OF RECORD.--October 1965 to current year. Occasional low-flow measurements, water years 1958-60, 1962, 1964. GAGE.--Water stage recorder. Datum of gage is 917.90 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark). REMARKS.--Records are considered good, except for those estimated daily discharges, which are poor. Beaver activity in September. U.S. Army Corps of Engineers rain gage and data collection platform with satellite telemetry at the station. Precipitation records are available online at the U.S. Army Corps of Engineers website: www2.mvr.usace.army.mil/WaterControl/datamining2.cfm.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in March 1960 reached a stage of about 23 ft, discharge, about 15,000 ft3/s and flood of June 5, 1947 reached a stage of 21.65 ft, from floodmark, discharge, 11,000 ft3/s. A discharge of 0.08 ft3/s was measured on Oct. 30, 1963.

DISCHARGE, CUBIC FEET PER SECOND

WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP MEAN VALUESDAY 1 1.7 e10 5.4 e4.0 e39 e38 17 20 5.1 20 0.95 0.54 2 2.6 e22 7.9 e2.9 e29 e33 15 18 4.5 14 0.86 0.40 3 2.8 e17 7.6 e1.9 e32 30 15 17 4.0 8.5 0.79 0.30 4 3.0 14 7.5 e1.8 e39 29 13 15 5.7 4.9 0.69 0.21 5 3.1 11 8.1 e2.8 e33 27 12 14 324 3.2 0.58 0.12 6 3.3 11 28 e1.6 e27 26 20 13 544 2.5 0.51 0.09 7 3.7 8.3 37 e2.5 e29 26 898 12 173 2.1 0.40 0.11 8 3.8 5.9 22 e3.2 e28 25 776 11 43 1.8 0.32 0.13 9 3.6 5.2 21 e5.1 e26 22 303 11 24 1.5 0.27 0.13 10 3.7 4.7 18 e3.3 e27 21 110 12 20 1.4 0.22 0.09 11 3.7 4.8 14 e4.1 e25 20 155 11 40 1.2 0.17 0.06 12 3.9 4.1 11 e7.1 e30 19 2,560 16 137 1.0 1.8 0.04 13 3.8 3.7 8.3 e7.5 e332 17 1,630 111 173 0.91 4.8 0.06 14 4.5 3.2 e1.3 e3.7 e727 16 734 149 113 0.89 11 0.08 15 4.6 3.0 e3.1 e2.5 e539 14 155 103 59 e0.75 6.3 0.07 16 4.9 3.2 e3.3 e1.8 e212 14 92 41 22 e0.72 3.6 0.07 17 5.2 3.1 e2.0 e1.6 122 14 65 25 13 e0.74 2.3 0.04 18 5.1 3.3 e3.8 e1.2 87 14 50 19 8.6 1.1 3.2 0.03 19 5.5 4.7 e1.7 e1.9 69 13 40 21 6.3 0.92 2.2 0.04 20 5.9 5.4 e2.1 e2.9 65 12 37 18 4.8 e0.74 1.7 0.03 21 6.6 5.3 e2.5 e3.7 71 11 38 17 3.6 e0.69 1.3 0.02 22 7.3 4.6 e1.4 e4.2 65 11 303 15 2.9 e0.66 1.2 0.02 23 7.6 4.1 e0.93 e3.5 58 12 232 12 2.6 e0.62 1.1 0.02 24 7.6 3.9 e0.50 e2.7 50 13 129 9.3 2.4 e0.58 0.89 0.02 25 7.6 4.4 e0.93 e4.3 46 18 62 7.5 2.0 0.54 0.65 0.02 26 7.8 3.2 e1.4 e25 42 21 47 6.6 2.3 1.4 0.70 0.13 27 8.3 3.8 e1.7 e22 40 19 39 5.9 2.9 2.7 0.89 0.06 28 e8.5 3.6 e2.1 e17 41 18 32 5.1 262 2.5 0.65 0.17 29 e6.8 3.6 e1.3 e27 --- 17 28 5.6 55 1.7 0.58 0.12 30 e7.2 4.1 e2.8 e34 --- 16 24 6.4 21 1.2 0.57 0.08 31 e7.7 --- e5.1 e37 --- 18 --- 5.8 --- 1.1 0.51 --- TOTAL 161.4 188.2 233.76 243.8 2,930 604 8,631 753.2 2,080.7 82.56 51.70 3.30 MEAN 5.21 6.27 7.54 7.86 105 19.5 288 24.3 69.4 2.66 1.67 0.11 MAX 8.5 22 37 37 727 38 2,560 149 544 20 11 0.54 MIN 1.7 3.0 0.50 1.2 25 11 12 5.1 2.0 0.54 0.17 0.02 CFSM 0.03 0.03 0.04 0.04 0.57 0.11 1.58 0.13 0.38 0.01 0.01 0.00 IN. 0.03 0.04 0.05 0.05 0.60 0.12 1.76 0.15 0.43 0.02 0.01 0.00 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 2005, BY WATER YEAR (WY) MEAN 72.5 54.8 54.7 32.5 83.5 176 231 226 162 145 74.6 112 MAX 568 294 408 340 403 761 1,093 1,097 856 1,711 618 1,704 (WY) (1974) (1993) (1983) (1974) (1997) (1979) (1991) (1995) (1967) (1993) (1987) (1992) MIN 0.01 0.00 0.00 0.01 0.22 1.22 0.07 2.12 0.38 0.00 0.04 0.09 (WY) (1990) (1990) (1990) (2003) (1989) (2000) (1989) (2000) (1988) (1988) (2003) (1991)

06903400 CHARITON RIVER NEAR CHARITON, IA—Continued

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1966 - 2005 ANNUAL TOTAL 43,377.46 15,963.62 ANNUAL MEAN 119 43.7 119 HIGHEST ANNUAL MEAN 345 1993 LOWEST ANNUAL MEAN 9.71 1989 HIGHEST DAILY MEAN 2,970Aug 28 2,560Apr 12 24,600Sep 15, 1992 LOWEST DAILY MEAN 0.50Dec 24 0.02Sep 21 a 0.00Aug 1, 1977 ANNUAL SEVEN-DAY 1.3Dec 23 0.02Sep 19 0.00Jun 21, 1988 MINIMUM MAXIMUM PEAK FLOW 2,950Apr 12 37,700Sep 15, 1992 MAXIMUM PEAK STAGE 17.31Apr 12 29.32Sep 15, 1992 ANNUAL RUNOFF (CFSM) 0.651 0.240 0.653 ANNUAL RUNOFF (INCHES) 8.87 3.26 8.87 10 PERCENT EXCEEDS 243 58 250 50 PERCENT EXCEEDS 9.0 5.6 11 90 PERCENT EXCEEDS 3.1 0.51 0.50

aAlso Sep. 22-25. eEstimated.

CHARITON RIVER BASIN

06903700 SOUTH FORK CHARITON RIVER NEAR PROMISE CITY, IA

LOCATION.--Lat 40°48'02", long 93°11'32", in SW1⁄4 SW1⁄4 sec.5, T.69 N., R.20 W., Wayne County, Hydrologic Unit 10280201, on right bank 20 ft downstream from bridge on County Highway S50, 1.3 mi downstream from Jordan Creek, 4.3 mi northwest of Promise City, 16.0 mi upstream from confluence with Chariton River, and 54.0 mi upstream from Iowa-Missouri State line.

DRAINAGE AREA.--168 mi2. PERIOD OF RECORD.--October 1967 to current year. Occasional low-flow measurements, water years 1958-66, published as "near Bethlehem". Monthly discharge measurements for March 1965 to September 1967 available in files of Iowa City District Office. GAGE.--Water-stage recorder. Datum of gage is 913.70 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark). REMARKS.--Records are considered good, except for those estimated daily discharges, which are poor. U.S. Army Corps of Engineers data collection platform with satellite telemetry at the station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Sept. 21, 1965, reached a stage of 25.5 ft, from floodmarks, discharge, about 18,000 ft3/s.

DISCHARGE, CUBIC FEET PER SECOND

WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP MEAN VALUESDAY 1 3.8 11 8.5 e7.8 e126 e39 29 22 5.9 100 1.9 1.5 2 5.4 43 8.8 e5.2 e158 e35 21 20 5.2 42 1.8 1.2 3 4.9 31 8.5 e5.4 e260 29 19 18 5.4 25 1.8 0.86 4 3.8 22 8.3 e4.9 e312 29 18 17 17 19 1.6 0.77 5 3.4 21 10 e4.4 e216 28 17 17 608 16 1.4 0.71 6 3.0 17 77 e2.3 176 26 21 16 104 13 1.3 0.62 7 3.2 12 56 e4.4 439 29 169 15 32 10 1.2 0.67 8 3.5 9.4 31 e7.2 182 29 87 14 17 8.2 1.2 0.73 9 3.1 7.7 22 e9.1 166 23 51 14 14 6.8 1.2 0.62 10 2.9 7.0 18 e9.3 99 22 38 13 12 5.7 1.1 0.53 11 3.0 6.8 16 e10 61 22 185 13 25 4.8 1.3 0.49 12 3.2 6.5 14 e13 75 22 2,040 23 27 4.0 1.7 0.42 13 3.4 5.7 12 e19 1,510 19 361 153 116 3.5 3.4 0.50 14 3.2 5.6 e2.8 e25 706 17 129 93 43 3.3 6.3 0.61 15 3.4 5.8 e4.6 e11 220 16 79 38 17 3.1 3.9 0.49 16 3.4 6.1 e5.8 e8.0 124 17 57 24 9.6 2.9 2.5 0.45 17 3.2 6.1 e3.8 e6.3 81 17 46 18 6.0 2.7 1.9 0.44 18 3.3 7.0 e5.9 e5.4 61 17 38 17 4.6 4.0 1.6 0.49 19 3.4 8.6 e2.9 e5.0 52 16 33 41 4.0 4.0 1.3 0.75 20 3.4 8.8 e4.6 e6.4 57 15 30 22 3.2 3.2 1.3 0.70 21 3.5 8.1 e4.8 e10 70 15 32 15 2.7 2.5 1.2 0.57 22 4.1 7.7 e3.4 e13 56 14 187 12 2.1 2.6 1.1 0.73 23 4.0 7.6 e2.4 e16 46 18 172 10 1.9 2.6 1.0 0.63 24 4.2 7.2 e2.4 e9.1 42 20 63 8.4 1.7 2.3 1.2 0.54 25 4.1 6.8 e2.2 e59 41 30 46 7.1 1.5 2.1 1.4 0.59 26 4.7 7.1 e2.6 e364 38 31 43 6.6 1.3 8.6 1.7 0.84 27 12 7.8 e2.6 e194 37 25 41 6.4 4.1 22 1.8 0.76 28 14 7.7 e4.0 e78 44 22 35 6.2 1,480 8.6 1.7 1.1 29 7.9 8.6 e3.8 e76 --- 20 30 6.1 146 3.4 4.7 1.0 30 18 8.9 e5.8 e93 --- 23 26 7.1 248 2.4 3.8 1.0 31 16 --- e11 e108 --- 41 --- 7.1 --- 2.1 2.2 --- TOTAL 162.4 325.6 365.5 1,189.2 5,455 726 4,143 700.0 2,965.2 340.4 61.5 21.31 MEAN 5.24 10.9 11.8 38.4 195 23.4 138 22.6 98.8 11.0 1.98 0.71 MAX 18 43 77 364 1,510 41 2,040 153 1,480 100 6.3 1.5 MIN 2.9 5.6 2.2 2.3 37 14 17 6.1 1.3 2.1 1.0 0.42 AC-FT 322 646 725 2,360 10,820 1,440 8,220 1,390 5,880 675 122 42 CFSM 0.03 0.06 0.07 0.23 1.16 0.14 0.82 0.13 0.59 0.07 0.01 0.00 IN. 0.04 0.07 0.08 0.26 1.21 0.16 0.92 0.15 0.66 0.08 0.01 0.00 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 2005, BY WATER YEAR (WY) MEAN 88.0 53.9 56.5 34.1 101 178 222 226 159 165 59.1 124 MAX 498 357 440 335 534 853 730 1,043 625 2,351 644 2,227 (WY) (1978) (1993) (1983) (1974) (2001) (1979) (1991) (1995) (2001) (1993) (2004) (1992) MIN 0.15 0.39 0.40 0.19 0.88 2.74 1.21 1.89 1.18 0.24 0.52 0.45 (WY) (1989) (1990) (1977) (1977) (1989) (2000) (1989) (2000) (1988) (1977) (2003) (2000)

463 CHARITON RIVER BASIN 06903700 SOUTH FORK CHARITON RIVER NEAR PROMISE CITY, IA—Continued

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1968 - 2005 ANNUAL TOTAL 44,538.6 16,455.11 ANNUAL MEAN 122 45.1 122 HIGHEST ANNUAL MEAN 446 1993 LOWEST ANNUAL MEAN 10.1 2003 HIGHEST DAILY MEAN 6,360Aug 27 2,040Apr 12 34,700Sep 15, 1992 LOWEST DAILY MEAN 2.2Dec 25 0.42Sep 12 0.00Jul 6, 1977 a ANNUAL SEVEN-DAY 2.8Dec 22 0.49Sep 11 0.00Aug 16, 1989 MINIMUM MAXIMUM PEAK FLOW 3,200Apr 12 70,600Sep 15, 1992 MAXIMUM PEAK STAGE 15.79Apr 12 34.84Sep 15, 1992 INSTANTANEOUS LOW FLOW 0.38Sep 11 b ANNUAL RUNOFF (AC-FT) 88,340 32,640 88,520 ANNUAL RUNOFF (CFSM) 0.724 0.268 0.727 ANNUAL RUNOFF (INCHES) 9.86 3.64 9.88 10 PERCENT EXCEEDS 131 80 192 50 PERCENT EXCEEDS 11 8.6 12 90 PERCENT EXCEEDS 3.6 1.2 0.89

aAlso July 7, 21-24, 28 to Aug. 1, 1977, July 9, 10, and Aug. 14, 18-22, 1989. bAlso Sep. 11-13, 16, 17. eEstimated.

CHARITON RIVER BASIN

06903880 RATHBUN LAKE NEAR RATHBUN, IA

LOCATION.--Lat 40°49'30", long 92°53'33", in NW1⁄4 NE1⁄4 sec.35, T.70 N., R.18 W., Appanoose County, Hydrologic Unit 10280201, at control tower of Rathbun Dam, 1.8 mi north of Rathbun, 3.9 mi upstream from Walnut Creek, and 30.1 mi upstream from Iowa-Missouri State line.

DRAINAGE AREA.--549 mi2. PERIOD OF RECORD.--October 1969 to current year. GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929. REMARKS.--Reservoir is formed by earthfill dam completed in 1969. Storage began in November 1969. Release is controlled by two hydraulically controlled slide gages, 6 ft wide and 12 ft high, into forechamber of an 11-ft diameter horseshoe conduit through the dam. No dead storage. Maximum design discharge through gates is 5,000 ft3/s. Uncontrolled notch spillway is concrete overflow section 500 ft in length, located about 3,000 ft west of the right abutment of the dam and provides emergency discharge into the adjacent drainage area of Little Walnut Creek. Uncontrolled notch spillway is at elevation 926 ft, contents 545,621 acre-ft, surface area, 20,974 acres. Conservation pool level is at elevation 904.0 ft, contents 199,830 acre-ft, surface area, 10,989 acres. Reservoir is used for flood control, low-flow augumentation, conservation and recreation. Prior to October 1, 2000 published as mean daily contents in acre feet, and as mean daily elevation in feet NGVD thereafter. U.S. Geological Survey data collection platform with satellite telemetry at station. COOPERATION.--Records provided by U.S. Army Corps of Engineers. EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 927.16 ft July 28, 1993; minimum elevation, 855.40 ft Oct. 6-10, 1969. EXTREMES FOR CURRENT YEAR.--Maximum elevation 907.02 ft on Apr. 23, 24; minimum elevation, 902.96 ft on Sep. 24, 25.

ELEVATION ABOVE NGVD 1929, FEET

WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP MEAN VALUESDAY 1 905.79 905.36 905.24 903.84 904.04 904.67 904.13 906.34 905.50 904.69 903.99 903.55 2 905.81 905.41 905.23 903.84 904.09 904.49 904.13 906.19 905.48 904.69 903.98 903.53 3 905.76 905.40 905.22 903.84 904.15 904.37 904.12 906.01 905.47 904.66 903.98 903.52 4 905.74 905.43 905.21 903.85 904.23 904.35 904.11 905.90 905.48 904.64 903.97 903.42 5 905.68 905.43 905.20 903.88 904.34 904.34 904.10 905.83 905.61 904.60 903.97 903.37 6 905.64 905.41 905.21 903.90 904.44 904.31 904.11 905.78 905.75 904.54 903.96 903.35 7 905.62 905.41 905.26 903.90 904.57 904.31 904.18 905.74 905.83 904.47 903.95 903.34 8 905.63 905.39 905.28 903.90 904.65 904.29 904.32 905.71 905.85 904.42 903.94 903.31 9 905.63 905.37 905.28 903.90 904.66 904.25 904.45 905.69 905.86 904.38 903.93 903.30 10 905.61 905.36 905.28 903.90 904.66 904.23 904.51 905.66 905.85 904.35 903.92 903.27 11 905.59 905.37 905.20 903.90 904.63 904.23 904.55 905.64 905.89 904.31 903.90 903.25 12 905.59 905.35 905.08 903.90 904.61 904.17 905.26 905.61 905.91 904.29 903.88 903.22 13 905.59 905.33 904.99 903.91 904.65 904.12 906.10 905.65 905.95 904.26 903.86 903.20 14 905.59 905.30 904.81 903.92 905.18 904.09 906.50 905.71 905.99 904.24 903.86 903.19 15 905.56 905.29 904.62 903.92 905.63 904.05 906.67 905.73 905.99 904.21 903.84 903.16 16 905.54 905.28 904.45 903.91 905.76 904.03 906.70 905.68 905.92 904.19 903.84 903.13 17 905.45 905.28 904.31 903.90 905.76 904.03 906.70 905.64 905.79 904.18 903.83 903.11 18 905.42 905.28 904.21 903.89 905.69 904.02 906.70 905.60 905.66 904.16 903.83 903.08 19 905.41 905.29 904.14 903.88 905.60 904.04 906.69 905.60 905.53 904.15 903.82 903.07 20 905.40 905.30 904.03 903.87 905.52 904.03 906.68 905.61 905.40 904.13 903.81 903.07 21 905.38 905.29 904.00 903.87 905.44 904.00 906.66 905.60 905.27 904.11 903.81 903.05 22 905.37 905.28 903.98 903.86 905.35 903.99 906.73 905.60 905.13 904.08 903.81 903.02 23 905.39 905.28 903.96 903.85 905.26 904.00 906.97 905.60 905.01 904.06 903.81 902.99 24 905.39 905.28 903.92 903.84 905.16 904.00 907.02 905.59 904.87 904.05 903.79 902.97 25 905.38 905.27 903.89 903.82 905.06 904.03 906.98 905.58 904.74 904.03 903.76 902.96 26 905.37 905.25 903.88 903.85 904.95 904.05 906.91 905.58 904.63 904.01 903.74 903.03 27 905.38 905.26 903.87 903.89 904.85 904.05 906.80 905.57 904.51 904.01 903.70 903.02 28 905.37 905.25 903.85 903.93 904.79 904.06 906.66 905.55 904.46 904.01 903.65 903.04 29 905.38 905.24 903.85 903.95 --- 904.06 906.54 905.51 904.54 904.01 903.61 903.03 30 905.44 905.24 903.84 903.97 --- 904.07 906.44 905.51 904.65 904.00 903.58 902.99 31 905.39 --- 903.84 904.00 --- 904.14 --- 905.50 --- 904.00 903.57 --- MEAN 905.53 905.32 904.55 903.89 904.92 904.16 905.75 905.69 905.42 904.26 903.84 903.18 MAX 905.81 905.43 905.28 904.00 905.76 904.67 907.02 906.34 905.99 904.69 903.99 903.55 MIN 905.37 905.24 903.84 903.82 904.04 903.99 904.10 905.50 904.46 904.00 903.57 902.96

CHARITON RIVER BASIN

06903900 CHARITON RIVER NEAR RATHBUN, IA

LOCATION.--Lat 40°49'19", long 92°53'28", in SE1⁄4 NE1⁄4 sec.35, T.70 N., R.18 W., Appanoose County, Hydrologic Unit 10280201, on left bank 600 ft downstream from outlet of Rathbun Dam, 1.7 mi north of Rathbun, 3.8 mi upstream from Walnut Creek, and 30.0 mi upstream from Iowa-Missouri State line.

DRAINAGE AREA.--549 mi2. PERIOD OF RECORD.--October 1956 to current year. Monthly discharge only for some periods, published in WSP 1730. REVISED RECORDS.--WSP 1560: Drainage area. GAGE.--Water-stage recorder. Datum of gage is 847.92 ft above NGVD of 1929. Prior to Nov. 16, 1960, nonrecording gage and Nov. 17, 1960 to Sept. 30, 1969, recording gage, at site 3.1 mi downstream at datum 4.65 ft lower.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 21,800 ft3/s Mar. 31, 1960, gage height, 25.3 ft from floodmark, site and datum then in use. REMARKS.--Records are considered good, except for those estimated daily discharge, which are poor. U.S. Geological Survey data collection platform with satellite and telephone modem telemetry at the station. Flow regulated by Rathbun Lake (station 06903880) since Nov. 21, 1969. Records of discharge include diversions of: Oct. 1-17, 11 ft3/s; Oct. 18 to Oct. 31, 5.0 ft3/s; Nov. 1 to Dec 1, 2.0 ft3/s; Dec 2 to Apr. 22, 4.0 ft3/s; Apr. 23 to Apr. 27, 10 ft3/s; Apr. 28 to Jun 4, 4.0 ft3/s; Jun 5 to Jun 17, 6.0 ft3/s; Jun 18 to to Jun 30, 5.0 ft3/s; July 1 to July 6, 7.0 ft3/s; July 7 to Aug. 23, 8.0 ft3/s; Aug 24, to Sept. 30, 10 ft3/s. The flow is diverted from the reservoir for fish ponds downstream from dam. Diverted flow returns to stream 0.1 mi downstream from gage. Rathbun Regional Water Association permit No. 0400900 allows withdrawal from Rathbun Dam discharge immediately downstream from gage for maximum rate of 4,200 gpm (9.36 ft3/s).

DISCHARGE, CUBIC FEET PER SECOND

WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP MEAN VALUESDAY 1 79 21 19 61 19 716 26 733 16 408 30 25 2 80 20 18 61 20 585 26 729 16 407 30 26 3 79 19 19 62 20 299 26 571 16 408 30 25 4 79 19 19 57 20 209 26 403 17 408 30 26 5 81 e18 19 59 20 210 26 402 17 410 30 27 6 48 e17 19 59 19 209 26 307 90 254 29 28 7 28 e17 19 60 204 213 26 222 207 102 29 27 8 28 17 20 59 474 215 146 222 214 104 30 28 9 28 17 346 59 471 216 228 224 220 93 30 28 10 29 17 766 59 470 215 229 222 222 89 31 29 11 29 17 763 59 470 216 240 223 225 61 31 29 12 29 17 760 59 470 218 e237 226 226 35 31 28 13 29 18 761 60 536 219 38 224 237 36 31 e29 14 28 21 758 61 262 223 91 220 286 36 28 e28 15 102 18 756 58 328 116 219 209 510 37 29 e28 16 99 18 754 58 691 27 223 209 746 36 29 e26 17 28 18 630 59 674 27 225 208 731 36 30 e24 18 28 18 407 60 675 27 224 118 729 36 31 e25 19 24 18 405 62 670 27 220 19 726 35 30 e25 20 24 18 194 62 672 28 221 19 725 35 29 e25 21 24 18 60 62 674 27 147 19 723 33 30 e25 22 24 18 57 62 584 25 224 19 720 33 25 e25 23 24 19 e62 63 714 25 424 20 717 33 24 e24 24 25 19 e62 63 714 25 405 20 616 33 24 e23 25 25 19 62 62 712 25 572 20 378 31 22 e23 26 25 19 60 37 711 25 740 20 378 30 25 e23 27 22 19 59 19 712 26 741 61 240 29 23 e23 28 17 19 58 19 715 28 740 93 86 30 23 23 29 17 19 60 19 --- 30 739 17 88 30 24 23 30 18 19 60 19 --- 29 736 16 230 30 24 23 31 19 --- 61 19 --- 26 --- 16 --- 30 24 --- TOTAL 1,219 551 8,113 1,638 12,721 4,506 8,191 6,031 10,352 3,408 866 771 MEAN 39.3 18.4 262 52.8 454 145 273 195 345 110 27.9 25.7 MAX 102 21 766 63 715 716 741 733 746 410 31 29 MIN 17 17 18 19 19 25 26 16 16 29 22 23 AC-FT 2,420 1,090 16,090 3,250 25,230 8,940 16,250 11,960 20,530 6,760 1,720 1,530

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1970 - 2005, BY WATER YEAR (WY) MEAN 246 254 383 219 299 434 346 418 478 543 444 294 MAX 1,790 1,828 1,364 1,546 1,550 1,271 1,480 1,281 1,573 1,377 1,826 1,707 (WY) (1994) (1994) (1993) (1993) (1993) (1993) (2001) (1973) (1973) (2001) (1993) (1993) MIN 11.5 9.97 5.54 8.98 5.60 9.40 6.74 19.3 16.6 6.53 9.10 11.0 (WY) (1975) (1975) (1970) (1970) (1970) (1970) (1970) (1977) (1988) (1970) (1970) (1974) 467 CHARITON RIVER BASIN 06903900 CHARITON RIVER NEAR RATHBUN, IA—Continued

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1970 - 2005 a ANNUAL TOTAL 95,740 58,367 ANNUAL MEAN 262 160 364 HIGHEST ANNUAL MEAN 1,164 1993 LOWEST ANNUAL MEAN 20.4 1989 HIGHEST DAILY MEAN 1,110Mar 9 766Dec 10 1,950Oct 17, 1993 LOWEST DAILY MEAN 16May 16 16May 30 b 0.00Oct 26, 1977 ANNUAL SEVEN-DAY 16May 15 16May 29 1.0Apr 1, 1970 MINIMUM MAXIMUM PEAK FLOW 782Dec 10 2,780Dec 14, 1993 MAXIMUM PEAK STAGE 7.67Dec 10 14.94Dec 14, 1993 INSTANTANEOUS LOW FLOW 0.00Oct 26, 1977 ANNUAL RUNOFF (AC-FT) 189,900 115,800 263,800 10 PERCENT EXCEEDS 780 622 1,180 50 PERCENT EXCEEDS 29 33 39 90 PERCENT EXCEEDS 19 19 16

aPost regulation. bAlso May 31 to Jun. 3. eEstimated.

APPENDIX D: Precipitation at Rathbun Dam Precipitation Facts

YEAR TOTAL YEAR TOTAL

1931-1950* 34 1986 41.7

1951-1980* 33.16 1987 38.22

1968 28.41 1988 18.06

1969 30.7 1989 28.79

1970 No record 1990 43.28

1971 No record 1991 34.29

1972 30.72 1992 42.54

1973 50.15 1993 45.30

1974 36.13 1994 33.21

1975 28.05 1995 32.21

1976 29.73 1996 36.22

1977 39.99 1997 33.73

1978 42.16 1998 47.7

1979 30.12 1999 32.70

1980 43.69 2000 31.09

1981 45.11 2001 44.37

1982 56.86 2002 25.4

1983 33.21 2003 33.91

1984 33.89 2004 36.48

1985 34.15 2005 29.51

2006 by Month:

January - 1.28" February - 0.2" March - 3.27" April - 3.29" May - 1.95" June - July - August - September - October - November - December - From Kansas City Corps http://www.nwk.usace.army.mil/rathbun/precipit.htm Appendix E: Long-term Precipitation at Albia, Centerville, and Chariton

ALBIA Long-term Precipitation Data (NWS COOP) IEM Climodat http://mesonet.agron.iastate.edu/climodat/ # Report Generated: 25 May 2006 # Climate Record: 01 Jan 1951 -> 01 Apr 2006 # Site Information: [IA0112] ALBIA # Contact Information: Daryl Herzmann [email protected] 515.294.5978 # OF PRECIPITATION EVENTS - % IN PARENS CL MAX MEAN 0.01- 0.26- 0.51- 1.01- # OF DAYS WK TIME PERIOD VAL RAIN 0.25 0.50 1.00 2.00 >2.01 MISSING TOTAL 1 3/1-->3/7 1.80 0.27 75(69) 16(15) 12(11) 5( 5) 0( 0) 0 108 2 3/8-->3/14 1.53 0.29 58(62) 19(20) 12(13) 4( 4) 0( 0) 0 93 3 3/15-->3/21 3.03 0.27 59(65) 15(16) 15(16) 1( 1) 1( 1) 0 91 4 3/22-->3/28 1.96 0.29 67(63) 17(16) 18(17) 5( 5) 0( 0) 0 107 5 3/29-->4/4 2.18 0.29 87(64) 25(19) 13(10) 9( 7) 1( 1) 0 135 6 4/5-->4/11 1.58 0.31 69(60) 20(17) 18(16) 8( 7) 0( 0) 0 115 7 4/12-->4/18 1.57 0.34 79(54) 30(21) 24(17) 12( 8) 0( 0) 0 145 8 4/19-->4/25 2.94 0.34 101(62) 27(16) 25(15) 9( 5) 2( 1) 0 164 9 4/26-->5/2 2.11 0.37 67(53) 25(20) 28(22) 5( 4) 2( 2) 0 127 10 5/3-->5/9 2.80 0.36 85(58) 24(16) 25(17) 11( 8) 1( 1) 0 146 11 5/10-->5/16 3.20 0.42 73(52) 23(16) 31(22) 12( 9) 2( 1) 0 141 12 5/17-->5/23 2.22 0.35 74(54) 27(20) 26(19) 9( 7) 1( 1) 0 137 13 5/24-->5/30 2.75 0.46 73(47) 30(19) 32(21) 13( 8) 6( 4) 0 154 14 5/31-->6/6 2.72 0.38 78(60) 19(15) 20(15) 10( 8) 3( 2) 0 130 15 6/7-->6/13 3.25 0.42 84(54) 21(13) 33(21) 17(11) 2( 1) 0 157 16 6/14-->6/20 4.54 0.42 78(57) 23(17) 17(12) 15(11) 4( 3) 0 137 17 6/21-->6/27 4.11 0.49 59(51) 19(17) 23(20) 10( 9) 4( 3) 0 115 18 6/28-->7/4 7.25 0.60 58(50) 22(19) 20(17) 8( 7) 8( 7) 0 116 19 7/5-->7/11 3.64 0.52 58(48) 21(17) 25(21) 10( 8) 7( 6) 0 121 20 7/12-->7/18 4.20 0.46 60(56) 18(17) 13(12) 12(11) 4( 4) 0 107 21 7/19-->7/25 2.72 0.43 51(46) 26(23) 20(18) 13(12) 1( 1) 0 111 22 7/26-->8/1 3.13 0.39 65(56) 19(16) 19(16) 12(10) 1( 1) 0 116 23 8/2-->8/8 5.76 0.48 71(58) 14(11) 19(16) 13(11) 5( 4) 0 122 24 8/9-->8/15 2.56 0.42 68(57) 18(15) 18(15) 13(11) 3( 3) 0 120 25 8/16-->8/22 2.81 0.34 73(63) 17(15) 16(14) 8( 7) 1( 1) 0 115 26 8/23-->8/29 3.48 0.40 56(53) 24(23) 16(15) 7( 7) 3( 3) 0 106 27 8/30-->9/5 2.32 0.41 59(56) 17(16) 14(13) 14(13) 2( 2) 0 106 28 9/6-->9/12 2.59 0.39 52(52) 14(14) 26(26) 6( 6) 2( 2) 0 100 29 9/13-->9/19 4.61 0.52 69(54) 21(17) 17(13) 12( 9) 8( 6) 0 127 30 9/20-->9/26 3.15 0.42 67(53) 24(19) 21(17) 10( 8) 4( 3) 0 126 31 9/27-->10/3 2.40 0.37 55(60) 12(13) 17(18) 7( 8) 1( 1) 0 92 32 10/4-->10/10 3.60 0.43 56(56) 17(17) 15(15) 9( 9) 3( 3) 0 100 33 10/11-->10/17 2.20 0.33 51(60) 16(19) 12(14) 5( 6) 1( 1) 0 85 34 10/18-->10/24 1.92 0.32 59(57) 24(23) 15(14) 6( 6) 0( 0) 0 104 35 10/25-->10/31 1.49 0.25 71(70) 16(16) 10(10) 5( 5) 0( 0) 0 102 36 11/1-->11/7 4.45 0.35 70(62) 19(17) 16(14) 5( 4) 3( 3) 0 113 37 11/8-->11/14 1.76 0.28 44(59) 17(23) 12(16) 1( 1) 0( 0) 0 74 38 11/15-->11/21 3.40 0.39 51(59) 14(16) 11(13) 7( 8) 3( 3) 0 86 39 11/22-->11/28 1.98 0.25 60(67) 12(13) 15(17) 2( 2) 0( 0) 0 89 40 11/29-->12/5 2.53 0.23 56(74) 10(13) 7( 9) 2( 3) 1( 1) 0 76 41 12/6-->12/12 2.28 0.22 73(73) 17(17) 7( 7) 2( 2) 1( 1) 0 100 42 12/13-->12/19 1.17 0.15 61(81) 9(12) 4( 5) 1( 1) 0( 0) 0 75 43 12/20-->12/26 1.37 0.19 58(75) 12(16) 4( 5) 3( 4) 0( 0) 0 77 44 12/27-->1/2 0.90 0.18 61(73) 14(17) 8(10) 0( 0) 0( 0) 0 83 45 1/3-->1/9 1.23 0.20 49(74) 9(14) 7(11) 1( 2) 0( 0) 0 66 46 1/10-->1/16 1.20 0.17 62(81) 9(12) 4( 5) 2( 3) 0( 0) 0 77 47 1/17-->1/23 0.93 0.16 69(79) 14(16) 4( 5) 0( 0) 0( 0) 0 87 48 1/24-->1/30 1.11 0.17 71(83) 7( 8) 6( 7) 2( 2) 0( 0) 0 86 49 1/31-->2/6 0.90 0.15 64(80) 12(15) 4( 5) 0( 0) 0( 0) 0 80 50 2/7-->2/13 1.70 0.17 62(82) 10(13) 2( 3) 2( 3) 0( 0) 0 76 51 2/14-->2/20 1.09 0.21 67(71) 14(15) 12(13) 1( 1) 0( 0) 0 94 52 2/21-->2/27 2.23 0.21 70(74) 17(18) 6( 6) 1( 1) 1( 1) 0 95 53 2/28-->2/29 1.65 0.23 11(85) 0( 0) 1( 8) 1( 8) 0( 0) 0 13 ANNUAL TOTALS 7.25 0.35 3424(60) 936(16) 815(14) 358( 6) 92( 1) 0 5625 CENTERVILLE Long-term Precipitation Data (NWS COOP)

# IEM Climodat http://mesonet.agron.iastate.edu/climodat/ # Report Generated: 25 May 2006 # Climate Record: 01 Jan 1951 -> 01 Apr 2006 # Site Information: [IA1354] CENTERVILLE # Contact Information: Daryl Herzmann [email protected] 515.294.5978 # OF PRECIPITATION EVENTS - % IN PARENS CL MAX MEAN 0.01- 0.26- 0.51- 1.01- # OF DAYS WK TIME PERIOD VAL RAIN 0.25 0.50 1.00 2.00 >2.01 MISSING TOTAL 1 3/1-->3/7 2.02 0.34 57(61) 18(19) 11(12) 6( 6) 1( 1) 0 93 2 3/8-->3/14 1.53 0.30 53(59) 17(19) 17(19) 3( 3) 0( 0) 0 90 3 3/15-->3/21 1.74 0.33 40(51) 23(29) 13(17) 2( 3) 0( 0) 0 78 4 3/22-->3/28 1.47 0.33 55(59) 17(18) 13(14) 8( 9) 0( 0) 0 93 5 3/29-->4/4 2.08 0.35 62(56) 21(19) 19(17) 7( 6) 1( 1) 0 110 6 4/5-->4/11 3.96 0.39 49(54) 17(19) 18(20) 4( 4) 2( 2) 0 90 7 4/12-->4/18 1.46 0.39 45(40) 33(29) 28(25) 6( 5) 0( 0) 0 112 8 4/19-->4/25 2.97 0.46 62(47) 34(26) 23(17) 11( 8) 3( 2) 0 133 9 4/26-->5/2 2.48 0.42 51(47) 24(22) 22(20) 9( 8) 2( 2) 0 108 10 5/3-->5/9 2.00 0.43 58(47) 27(22) 24(20) 14(11) 0( 0) 0 123 11 5/10-->5/16 1.82 0.45 51(43) 26(22) 26(22) 15(13) 0( 0) 0 118 12 5/17-->5/23 1.87 0.35 55(48) 33(29) 20(18) 6( 5) 0( 0) 0 114 13 5/24-->5/30 3.67 0.47 69(49) 34(24) 18(13) 16(11) 4( 3) 0 141 14 5/31-->6/6 2.83 0.51 50(47) 24(22) 17(16) 12(11) 4( 4) 0 107 15 6/7-->6/13 2.03 0.53 53(42) 23(18) 25(20) 25(20) 1( 1) 0 127 16 6/14-->6/20 2.57 0.44 62(54) 22(19) 13(11) 15(13) 2( 2) 0 114 17 6/21-->6/27 3.33 0.60 44(48) 12(13) 17(19) 12(13) 6( 7) 0 91 18 6/28-->7/4 4.37 0.54 44(44) 22(22) 22(22) 8( 8) 4( 4) 0 100 19 7/5-->7/11 4.26 0.51 47(48) 11(11) 26(27) 12(12) 2( 2) 0 98 20 7/12-->7/18 2.80 0.55 42(44) 17(18) 21(22) 10(11) 5( 5) 0 95 21 7/19-->7/25 3.10 0.52 50(45) 30(27) 16(15) 6( 5) 8( 7) 0 110 22 7/26-->8/1 3.90 0.54 45(49) 12(13) 18(20) 14(15) 3( 3) 0 92 23 8/2-->8/8 4.49 0.61 45(47) 17(18) 14(15) 14(15) 6( 6) 0 96 24 8/9-->8/15 2.25 0.50 37(38) 27(28) 19(20) 12(12) 2( 2) 0 97 25 8/16-->8/22 2.51 0.50 45(46) 24(25) 16(16) 8( 8) 4( 4) 0 97 26 8/23-->8/29 4.00 0.58 30(39) 14(18) 15(20) 14(18) 3( 4) 0 76 27 8/30-->9/5 4.19 0.52 28(41) 15(22) 18(26) 6( 9) 2( 3) 0 69 28 9/6-->9/12 2.97 0.59 31(40) 12(15) 23(29) 8(10) 4( 5) 0 78 29 9/13-->9/19 3.00 0.58 41(43) 14(15) 24(25) 12(13) 4( 4) 0 95 30 9/20-->9/26 2.77 0.57 28(31) 27(30) 17(19) 15(17) 3( 3) 0 90 31 9/27-->10/3 2.74 0.50 30(41) 13(18) 22(30) 8(11) 1( 1) 0 74 32 10/4-->10/10 4.25 0.56 40(48) 17(20) 15(18) 7( 8) 5( 6) 0 84 33 10/11-->10/17 2.52 0.46 32(45) 19(27) 11(15) 7(10) 2( 3) 0 71 34 10/18-->10/24 2.43 0.38 39(49) 19(24) 17(21) 3( 4) 2( 3) 0 80 35 10/25-->10/31 1.32 0.34 47(59) 14(18) 13(16) 6( 8) 0( 0) 0 80 36 11/1-->11/7 2.28 0.41 46(55) 14(17) 13(15) 10(12) 1( 1) 0 84 37 11/8-->11/14 1.98 0.30 38(59) 15(23) 9(14) 2( 3) 0( 0) 0 64 38 11/15-->11/21 1.94 0.39 34(53) 13(20) 10(16) 7(11) 0( 0) 0 64 39 11/22-->11/28 1.65 0.27 42(66) 10(16) 10(16) 2( 3) 0( 0) 0 64 40 11/29-->12/5 1.05 0.24 40(67) 9(15) 10(17) 1( 2) 0( 0) 0 60 41 12/6-->12/12 2.32 0.28 53(67) 14(18) 7( 9) 4( 5) 1( 1) 0 79 42 12/13-->12/19 1.86 0.22 41(76) 6(11) 5( 9) 2( 4) 0( 0) 0 54 43 12/20-->12/26 1.04 0.23 39(72) 8(15) 4( 7) 3( 6) 0( 0) 0 54 44 12/27-->1/2 1.06 0.25 38(67) 10(18) 8(14) 1( 2) 0( 0) 0 57 45 1/3-->1/9 1.09 0.22 35(63) 16(29) 3( 5) 2( 4) 0( 0) 0 56 46 1/10-->1/16 1.35 0.20 42(74) 7(12) 7(12) 1( 2) 0( 0) 0 57 47 1/17-->1/23 1.54 0.20 51(71) 17(24) 3( 4) 1( 1) 0( 0) 0 72 48 1/24-->1/30 0.96 0.17 62(81) 8(10) 7( 9) 0( 0) 0( 0) 0 77 49 1/31-->2/6 0.79 0.16 52(81) 8(13) 4( 6) 0( 0) 0( 0) 0 64 50 2/7-->2/13 1.78 0.19 47(73) 14(22) 2( 3) 1( 2) 0( 0) 0 64 51 2/14-->2/20 0.92 0.23 49(66) 15(20) 10(14) 0( 0) 0( 0) 0 74 52 2/21-->2/27 1.54 0.22 50(72) 12(17) 6( 9) 1( 1) 0( 0) 0 69 53 2/28-->2/29 0.54 0.23 4(67) 1(17) 1(17) 0( 0) 0( 0) 0 6 ANNUAL TOTALS 4.49 0.41 2380(52) 926(20) 770(16) 379( 8) 88( 1) 0 4543

CHARITON Long-term Precipitation Data

# IEM Climodat http://mesonet.agron.iastate.edu/climodat/ # Report Generated: 25 May 2006 # Climate Record: 01 Jan 1951 -> 01 Apr 2006 # Site Information: [IA1394] CHARITON # Contact Information: Daryl Herzmann [email protected] 515.294.5978 # OF PRECIPITATION EVENTS - % IN PARENS CL MAX MEAN 0.01- 0.26- 0.51- 1.01- # OF DAYS WK TIME PERIOD VAL RAIN 0.25 0.50 1.00 2.00 >2.01 MISSING TOTAL 1 3/1-->3/7 1.26 0.27 74(64) 20(17) 15(13) 6( 5) 0( 0) 0 115 2 3/8-->3/14 1.33 0.25 59(63) 18(19) 12(13) 4( 4) 0( 0) 0 93 3 3/15-->3/21 1.40 0.24 61(62) 22(22) 13(13) 3( 3) 0( 0) 0 99 4 3/22-->3/28 1.75 0.29 68(63) 23(21) 8( 7) 9( 8) 0( 0) 0 108 5 3/29-->4/4 1.78 0.30 76(63) 21(17) 18(15) 6( 5) 0( 0) 0 121 6 4/5-->4/11 1.81 0.30 71(63) 18(16) 17(15) 7( 6) 0( 0) 0 113 7 4/12-->4/18 1.79 0.38 67(50) 29(22) 23(17) 14(11) 0( 0) 0 133 8 4/19-->4/25 2.82 0.36 97(63) 23(15) 19(12) 14( 9) 2( 1) 0 155 9 4/26-->5/2 1.93 0.33 83(59) 27(19) 20(14) 11( 8) 0( 0) 0 141 10 5/3-->5/9 2.65 0.39 91(61) 16(11) 23(16) 15(10) 3( 2) 0 148 11 5/10-->5/16 2.00 0.39 79(55) 22(15) 29(20) 13( 9) 0( 0) 0 143 12 5/17-->5/23 3.06 0.33 87(61) 26(18) 20(14) 7( 5) 2( 1) 0 142 13 5/24-->5/30 2.56 0.40 100(61) 24(15) 21(13) 14( 9) 5( 3) 0 164 14 5/31-->6/6 2.13 0.39 73(54) 27(20) 19(14) 13(10) 2( 1) 0 134 15 6/7-->6/13 3.30 0.44 91(55) 22(13) 33(20) 14( 9) 4( 2) 0 164 16 6/14-->6/20 2.84 0.50 64(52) 15(12) 28(23) 11( 9) 6( 5) 0 124 17 6/21-->6/27 3.45 0.52 63(52) 17(14) 25(20) 11( 9) 6( 5) 0 122 18 6/28-->7/4 5.48 0.52 59(51) 20(17) 20(17) 12(10) 4( 3) 0 115 19 7/5-->7/11 5.50 0.48 59(50) 23(19) 22(19) 9( 8) 5( 4) 0 118 20 7/12-->7/18 4.15 0.50 59(52) 24(21) 15(13) 11(10) 5( 4) 0 114 21 7/19-->7/25 2.38 0.42 60(52) 19(16) 23(20) 12(10) 2( 2) 0 116 22 7/26-->8/1 2.15 0.38 59(58) 19(19) 14(14) 9( 9) 1( 1) 0 102 23 8/2-->8/8 5.81 0.46 73(58) 19(15) 15(12) 14(11) 4( 3) 0 125 24 8/9-->8/15 2.60 0.44 65(56) 15(13) 20(17) 15(13) 2( 2) 0 117 25 8/16-->8/22 3.10 0.40 63(58) 17(16) 15(14) 13(12) 1( 1) 0 109 26 8/23-->8/29 4.52 0.47 48(52) 15(16) 21(23) 6( 6) 3( 3) 0 93 27 8/30-->9/5 3.32 0.46 56(56) 13(13) 19(19) 8( 8) 4( 4) 0 100 28 9/6-->9/12 3.30 0.47 54(52) 16(16) 20(19) 11(11) 2( 2) 0 103 29 9/13-->9/19 8.03 0.61 54(46) 24(20) 17(14) 19(16) 4( 3) 0 118 30 9/20-->9/26 4.50 0.47 60(51) 22(19) 18(15) 12(10) 5( 4) 0 117 31 9/27-->10/3 1.45 0.35 50(58) 12(14) 15(17) 9(10) 0( 0) 0 86 32 10/4-->10/10 4.00 0.40 61(65) 12(13) 9(10) 9(10) 3( 3) 0 94 33 10/11-->10/17 2.71 0.36 50(57) 20(23) 11(13) 6( 7) 1( 1) 0 88 34 10/18-->10/24 3.00 0.35 68(62) 16(15) 15(14) 8( 7) 2( 2) 0 109 35 10/25-->10/31 2.85 0.30 62(64) 19(20) 9( 9) 6( 6) 1( 1) 0 97 36 11/1-->11/7 2.30 0.37 54(57) 17(18) 16(17) 6( 6) 2( 2) 0 95 37 11/8-->11/14 1.50 0.24 57(69) 13(16) 9(11) 4( 5) 0( 0) 0 83 38 11/15-->11/21 4.95 0.34 59(65) 15(16) 10(11) 4( 4) 3( 3) 0 91 39 11/22-->11/28 1.50 0.21 64(77) 8(10) 10(12) 1( 1) 0( 0) 0 83 40 11/29-->12/5 2.96 0.21 60(76) 11(14) 7( 9) 0( 0) 1( 1) 0 79 41 12/6-->12/12 1.96 0.18 77(81) 12(13) 3( 3) 3( 3) 0( 0) 0 95 42 12/13-->12/19 1.10 0.15 63(82) 10(13) 3( 4) 1( 1) 0( 0) 0 77 43 12/20-->12/26 1.80 0.17 63(81) 9(12) 5( 6) 1( 1) 0( 0) 0 78 44 12/27-->1/2 0.91 0.16 66(80) 13(16) 4( 5) 0( 0) 0( 0) 0 83 45 1/3-->1/9 0.82 0.16 53(76) 14(20) 3( 4) 0( 0) 0( 0) 0 70 46 1/10-->1/16 1.31 0.17 57(81) 9(13) 2( 3) 2( 3) 0( 0) 0 70 47 1/17-->1/23 0.87 0.14 68(81) 13(15) 3( 4) 0( 0) 0( 0) 0 84 48 1/24-->1/30 0.79 0.14 71(83) 9(10) 6( 7) 0( 0) 0( 0) 0 86 49 1/31-->2/6 0.89 0.16 68(81) 11(13) 5( 6) 0( 0) 0( 0) 0 84 50 2/7-->2/13 1.65 0.17 56(78) 12(17) 3( 4) 1( 1) 0( 0) 0 72 51 2/14-->2/20 1.43 0.23 60(71) 12(14) 11(13) 1( 1) 0( 0) 0 84 52 2/21-->2/27 1.95 0.21 69(72) 16(17) 9( 9) 2( 2) 0( 0) 0 96 53 2/28-->2/29 0.64 0.13 11(79) 2(14) 1( 7) 0( 0) 0( 0) 0 14 ANNUAL TOTALS 8.03 0.35 3440(61) 901(16) 751(13) 387( 6) 85( 1) 0 5564