LOCATION.-- Lat 38°30'25", long 89°16'24" (NAD of 1927), in NE1/4NE1/4 sec.26, T.1 N., R.2 W., Washington County, Hydrologic Unit 07140202, on left bank at downstream side of bridge on County Highway 24, 2.2 mi southwest of Hoffman, 4.8 mi southeast of Posey, about 9 mi upstream from State Highway 127, and at mile 20.9. |
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DRAINAGE AREA.-- 254 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1974 to September 1998. |
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STAGE: Water years 1994 to current year. October 1968 to September 1974, available in files of Illinois Water Science Center. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1979-91. |
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GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 420.19 ft above NGVD of 1929. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 26,900 ft3/s, from rating curve extended above 16,400 ft3/s, May 17, 1990, gage height, 17.40 ft; minimum observed, 1.77 ft, Sept. 22, 1976. |
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EXTREMES FOR CURRENT YEAR.-- Maximum gage height, 13.65 ft, May 31; minimum, 2.13 ft, Oct. 13, 14. |
Gage height, feet, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 2.88 | 2.55 | 3.11 | 6.11 | 3.06 | 3.30 | 8.48 | 3.47 | 13.29 | 2.41 | 2.81 | 4.24 |
2 | 2.67 | 2.62 | 3.00 | 4.47 | 3.23 | 3.68 | 5.92 | 5.33 | --- | --- | 2.68 | 3.57 |
3 | 2.53 | 2.65 | 2.92 | 4.07 | 6.95 | 4.17 | 4.73 | 5.31 | --- | 3.33 | 2.68 | 3.28 |
4 | 2.44 | 2.67 | 2.88 | 7.57 | 6.01 | 8.45 | 4.24 | 4.42 | --- | --- | 2.58 | 3.11 |
5 | 2.36 | 2.73 | 2.88 | 8.03 | 5.03 | 12.61 | 3.88 | 3.76 | --- | --- | 2.49 | 2.90 |
6 | 2.30 | 2.76 | 2.91 | 7.11 | 4.50 | 12.88 | 3.65 | 3.40 | 3.47 | --- | 2.44 | 2.86 |
7 | 2.25 | 2.85 | 2.91 | 8.57 | 4.15 | 12.51 | 3.51 | 3.19 | 3.31 | --- | 2.37 | --- |
8 | 2.20 | 2.93 | 2.87 | 7.22 | 3.89 | 7.92 | 3.42 | 3.04 | 3.17 | --- | 2.35 | 2.76 |
9 | 2.20 | 2.84 | 2.88 | 4.82 | 3.66 | 4.96 | 3.32 | 2.93 | 3.06 | --- | 2.26 | 2.73 |
10 | 2.21 | 2.76 | 2.91 | 4.25 | 3.70 | 4.34 | 3.22 | 2.83 | 3.00 | 3.01 | 2.27 | 2.71 |
11 | 2.21 | 2.71 | 2.97 | 3.95 | 3.96 | 3.99 | 3.16 | 2.74 | 2.98 | 2.83 | 2.29 | 2.68 |
12 | 2.19 | 2.71 | 3.04 | 3.82 | 4.53 | 3.76 | 3.11 | 2.68 | 3.00 | --- | 2.28 | 2.65 |
13 | 2.14 | 2.71 | 3.04 | 3.73 | 4.89 | 3.58 | 3.05 | 2.69 | --- | --- | 2.25 | 2.62 |
14 | 2.17 | 2.76 | 3.02 | 3.60 | 4.72 | 3.45 | 3.04 | 2.72 | --- | --- | 2.21 | 2.59 |
15 | 2.43 | 2.78 | 2.93 | 3.51 | 4.06 | 3.38 | 3.03 | 2.99 | --- | 3.23 | 2.20 | 2.60 |
16 | 2.47 | 2.87 | 2.90 | 3.43 | 3.83 | 3.34 | 3.01 | 3.05 | 3.16 | 2.98 | 2.25 | 2.60 |
17 | 2.56 | 2.87 | 2.88 | 4.63 | 3.70 | 3.40 | 2.97 | 3.08 | 3.05 | 2.82 | 2.25 | 2.64 |
18 | 2.69 | 5.88 | 2.88 | 9.23 | 3.58 | 3.38 | 2.93 | 2.99 | 3.04 | 2.78 | 2.25 | 2.65 |
19 | 2.74 | 11.76 | 2.85 | 7.14 | 3.53 | 3.35 | 2.86 | 2.81 | --- | 2.70 | 2.25 | 2.64 |
20 | 2.66 | 11.45 | 2.90 | 8.11 | 3.74 | 3.28 | 2.81 | 2.73 | --- | 2.61 | 3.34 | 2.60 |
21 | 2.58 | 7.12 | 2.88 | 5.53 | 4.37 | 3.21 | 2.79 | 2.82 | --- | 2.54 | 3.66 | 2.56 |
22 | 2.54 | 4.46 | 2.86 | 4.52 | 4.86 | 3.14 | 2.81 | 2.86 | 3.26 | 2.50 | 3.06 | 2.55 |
23 | 2.49 | 3.77 | 4.41 | 4.07 | 5.36 | 3.12 | 2.81 | 2.76 | 3.02 | 2.49 | 2.73 | 2.53 |
24 | 2.44 | 7.45 | 6.97 | 3.87 | 4.83 | 3.10 | 2.91 | 2.67 | 2.87 | 2.47 | 3.27 | 2.50 |
25 | 2.44 | 8.61 | 6.51 | 3.61 | 3.96 | 3.06 | 3.30 | 3.10 | 2.75 | 2.43 | 3.05 | 2.54 |
26 | 2.48 | 6.70 | 4.96 | 3.61 | 3.68 | 5.12 | 3.70 | 10.46 | 2.66 | 2.51 | 9.96 | 2.52 |
27 | 2.58 | 4.81 | 4.88 | 3.47 | 3.54 | 12.80 | 3.73 | 12.43 | 2.58 | 2.49 | 12.26 | 2.51 |
28 | 2.56 | 3.80 | 4.17 | 3.41 | 3.43 | 13.24 | 3.38 | 13.05 | 2.52 | --- | 12.33 | 2.53 |
29 | 2.54 | 3.44 | 7.84 | 3.24 | 3.31 | 13.13 | 3.18 | 13.01 | 2.45 | 2.36 | 12.79 | 2.55 |
30 | 2.56 | 3.25 | 9.68 | 3.18 | --- | 12.15 | 3.05 | 13.00 | 2.42 | 2.45 | 12.71 | 2.55 |
31 | 2.53 | --- | 9.26 | 3.10 | --- | 10.78 | --- | 13.37 | --- | 2.83 | 8.82 | --- |
MEAN | 2.45 | 4.31 | 3.97 | 5.00 | 4.21 | 6.21 | 3.53 | 5.02 | --- | --- | 4.29 | --- |
MAX | 2.88 | 11.76 | 9.68 | 9.23 | 6.95 | 13.24 | 8.48 | 13.37 | --- | --- | 12.79 | --- |
MIN | 2.14 | 2.55 | 2.85 | 3.10 | 3.06 | 3.06 | 2.79 | 2.67 | --- | --- | 2.20 | --- |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |