LOCATION.-- Lat 40°01'29", long 90°37'54" (NAD of 1927), in SW1/4NE1/4 sec.33, T.1 N., R.2 W., Brown County, Hydrologic Unit 07130010, on deck of bridge on old U.S. Highway 24, 600 ft downstream from bridge on new U.S. Highway 24, 0.2 mi east of Ripley, 2 mi upstream from Town Branch, and at mile 12.3. |
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DRAINAGE AREA.-- 1,293 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: March 1921 to current year. Prior to October 1931, published as Crooked Creek at Ripley. |
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STAGE: Water years 1994-2002. |
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SURFACE-WATER QUALITY |
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SEDIMENT: Water years 1981 and 1995-97. |
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CHEMICAL: Water years 1975-91. |
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SPECIFIC CONDUCTANCE: Water year 1979. |
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WATER TEMPERATURE: Water year 1979. |
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REVISED RECORDS.-- WSP 975: 1936. WSP 1208: 1925, 1929, 1933. WDR IL-75-1: Drainage area. |
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GAGE.-- U.S. Army Corps of Engineers water-stage recorder, satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 431.1 ft above NGVD of 1929. Prior to July 28, 1926, nonrecording gage at site 200 ft upstream at datum 0.02 ft higher. July 28, 1926 to Jan. 11, 1935, nonrecording gage at present site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 28,000 ft3/s, Mar. 7, 1985, gage height, 29.07 ft; maximum gage height, 29.15 ft, May 18, 1995, observed; no flow for part of Sept. 26, 1989. |
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SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 7,140 mg/L, June 21, 1981; minimum daily mean, 5 mg/L, Dec. 4, 5, 1996. |
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SUSPENDED-SEDIMENT LOADS: Maximum daily, 212,000 tons, May 8, 1996; minimum daily, 0.87 tons, Jan. 20, 1997. |
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REMARKS FOR CURRENT YEAR.-- Records fair except those for Feb. 4 to Apr. 4, May 12-19, and those for estimated daily discharges, which are poor. |
DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 65 | 328 | 379 | e230 | 6220 | 558 | 495 | 5340 | 954 | 432 | 181 | 200 |
2 | 61 | 394 | 373 | e210 | 5320 | 682 | 457 | 5950 | 1350 | 394 | 137 | 173 |
3 | 57 | 344 | 341 | e200 | 3420 | 762 | 425 | 3540 | 1470 | 364 | 112 | 152 |
4 | 54 | 297 | 309 | e190 | 2050 | 630 | 412 | 2060 | 1040 | 336 | 97 | 134 |
5 | 117 | 264 | 293 | e200 | 1520 | 618 | 375 | 1510 | 1180 | 316 | 87 | 120 |
6 | 216 | 241 | 289 | e210 | 1110 | 932 | 342 | 1510 | 1890 | 295 | 91 | 109 |
7 | 325 | 229 | 282 | e215 | 992 | 1520 | 342 | 1710 | 1730 | 274 | 78 | 99 |
8 | 260 | 222 | 272 | e220 | 925 | 1660 | 983 | 1580 | 970 | 253 | 71 | 90 |
9 | 202 | 213 | 256 | e225 | 842 | 1820 | 3300 | 6770 | 741 | 237 | 72 | 85 |
10 | 160 | 206 | 243 | e230 | 978 | 2380 | 3880 | 6130 | 648 | 223 | 85 | 81 |
11 | 131 | 198 | 230 | e240 | 2180 | 2080 | 2950 | 5980 | 2030 | 230 | 75 | 75 |
12 | 195 | 188 | 228 | e245 | 2380 | 1460 | 1910 | 12900 | 5770 | 218 | 66 | 70 |
13 | 308 | 186 | 265 | e250 | 1830 | 1200 | 1560 | 17600 | 7990 | 240 | 61 | 66 |
14 | 626 | 182 | 339 | 256 | 1390 | 1050 | 1280 | 19400 | 9420 | 204 | 60 | 63 |
15 | 724 | 177 | 456 | 246 | 1130 | 965 | 1080 | 19600 | 8550 | 186 | 59 | 65 |
16 | 1210 | 174 | 397 | 232 | 1000 | 874 | 964 | 16900 | 10200 | 169 | 62 | 62 |
17 | 1470 | 172 | 365 | 210 | 893 | 799 | 850 | 13000 | 11700 | 155 | 64 | 59 |
18 | 762 | 167 | 363 | 193 | 807 | 688 | 745 | 9820 | 11100 | 143 | 81 | 58 |
19 | 493 | 162 | 361 | 201 | 732 | 640 | 672 | 7110 | 9180 | 137 | 216 | 59 |
20 | 387 | 156 | 336 | 199 | 774 | 624 | 630 | 3480 | 5500 | 384 | 206 | 62 |
21 | 321 | 153 | 310 | 193 | 1580 | 609 | 1060 | 1830 | 1450 | 1040 | 442 | 60 |
22 | 295 | 158 | 325 | 192 | 2050 | 567 | 1880 | 1280 | 1000 | 383 | 228 | 58 |
23 | 2070 | 152 | 679 | 194 | 1400 | 515 | 2270 | 1210 | 854 | 215 | 976 | 61 |
24 | 2850 | 219 | 970 | 208 | 1070 | 481 | 2360 | 1170 | 769 | 199 | 2530 | 59 |
25 | 2180 | 392 | 734 | 204 | 949 | 509 | 2980 | 1650 | 703 | 193 | 3250 | 57 |
26 | 1110 | 774 | 431 | 183 | 860 | 503 | 2600 | 2220 | 670 | 162 | 3320 | 54 |
27 | 700 | 695 | e360 | 184 | 751 | 482 | 3990 | 2400 | 667 | 133 | 2300 | 52 |
28 | 531 | 577 | e370 | 189 | 634 | 464 | 6240 | 1690 | 592 | 132 | 711 | 50 |
29 | 444 | 481 | e360 | 187 | --- | 469 | 5400 | 1280 | 540 | 207 | 389 | 49 |
30 | 395 | 422 | e310 | 526 | --- | 498 | 5110 | 1040 | 479 | 260 | 293 | 48 |
31 | 358 | --- | e260 | 5710 | --- | 501 | --- | 909 | --- | 256 | 236 | --- |
TOTAL | 19077 | 8523 | 11486 | 12372 | 45787 | 27540 | 57542 | 178569 | 101137 | 8370 | 16636 | 2430 |
MEAN | 615.4 | 284.1 | 370.5 | 399.1 | 1635 | 888.4 | 1918 | 5760 | 3371 | 270.0 | 536.6 | 81.00 |
MAX | 2850 | 774 | 970 | 5710 | 6220 | 2380 | 6240 | 19600 | 11700 | 1040 | 3320 | 200 |
MIN | 54 | 152 | 228 | 183 | 634 | 464 | 342 | 909 | 479 | 132 | 59 | 48 |
CFSM | 0.48 | 0.22 | 0.29 | 0.31 | 1.26 | 0.69 | 1.48 | 4.45 | 2.61 | 0.21 | 0.42 | 0.06 |
IN. | 0.55 | 0.25 | 0.33 | 0.36 | 1.32 | 0.79 | 1.66 | 5.14 | 2.91 | 0.24 | 0.48 | 0.07 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 433.4 | 511.4 | 490.3 | 623.6 | 1064 | 1316 | 1583 | 1440 | 1175 | 780.9 | 356.5 | 433.2 |
MAX | 5747 | 5949 | 5060 | 3338 | 3899 | 5785 | 5678 | 9257 | 6336 | 5975 | 1591 | 5726 |
(WY) | 1987 | 1986 | 1983 | 1946 | 1985 | 1985 | 1944 | 1995 | 1990 | 1993 | 1932 | 1961 |
MIN | 7.06 | 9.08 | 7.92 | 13.2 | 9.96 | 61.4 | 116 | 21.3 | 42.5 | 16.1 | 11.4 | 5.13 |
(WY) | 1957 | 1990 | 1990 | 1954 | 1989 | 1941 | 1934 | 1934 | 1936 | 1936 | 1936 | 1988 |
SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1921 - 2002 | |||
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ANNUAL TOTAL | 376191 | 489469 | ||||
ANNUAL MEAN | 1031 | 1341 | 849.4 | |||
HIGHEST ANNUAL MEAN | 2452 | 1993 | ||||
LOWEST ANNUAL MEAN | 50.2 | 1989 | ||||
HIGHEST DAILY MEAN | 8330 A | Feb 14 | 19600 A | May 15 | 26800 | Mar 7 1985 |
LOWEST DAILY MEAN | 43 B | Jan 28 | 48 | Sep 30 | 0.96 | Sep 25 1989 |
ANNUAL SEVEN-DAY MINIMUM | 49 | Jan 22 | 53 | Sep 24 | 1.8 | Sep 22 1989 |
MAXIMUM PEAK FLOW | 20000 A | May 15 | 28000 C | Mar 7 1985 | ||
MAXIMUM PEAK STAGE | 28.41 A | May 15 | 29.15 D | May 18 1995 | ||
INSTANTANEOUS LOW FLOW | 48 | Sep 29,30 | 0.00 | Sep 26 1989 | ||
ANNUAL RUNOFF (CFSM) | 0.80 | 1.04 | 0.66 | |||
ANNUAL RUNOFF (INCHES) | 10.82 | 14.08 | 8.93 | |||
10 PERCENT EXCEEDS | 2860 | 3090 | 2250 | |||
50 PERCENT EXCEEDS | 416 | 395 | 237 | |||
90 PERCENT EXCEEDS | 66 | 83 | 28 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |