LOCATION.-- Lat 40°07'55", long 89°44'08" (NAD of 1927), in NE1/4NE1/4 sec.2, T.19 N., R.6 W., Menard County, Hydrologic Unit 07130009, on downstream side of bridge on State Highway 29, 3.3 mi downstream from Pike Creek, 3.5 mi north of Greenview, and at mile 4.9. |
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DRAINAGE AREA.-- 1,804 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1941 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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MISCELLANEOUS: Contaminants in streambed sediments, July 1997; contaminants in fish tissue, July 1997. |
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REVISED RECORDS.-- WSP 1175: 1948(P). WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 479.00 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark). Prior to Nov. 3, 1972, nonrecording gage at same site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 41,200 ft3/s, May 19, 1943, gage height, 20.50 ft, from graph based on gage readings; minimum daily discharge, 46 ft3/s, Sept. 25, 26, Oct. 12-14, 1963. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of July 1929 reached a stage of 20.3 ft., from floodmark, discharge unknown. |
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REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor. |
Discharge, cubic feet per second, 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 | 231 | 227 | 1790 | 1220 | e550 | 683 | 4680 | 1100 | 8670 | 1240 | 503 | 1090 |
2 | 222 | 224 | 1590 | 1190 | e540 | 685 | 4050 | 1200 | 6630 | 1180 | 478 | 916 |
3 | 217 | 226 | 1480 | 1190 | e530 | 668 | 3720 | 1280 | 4640 | 1150 | 451 | 788 |
4 | 217 | 229 | 1420 | 1210 | e520 | 670 | 3520 | 1320 | 4070 | 1160 | 440 | 693 |
5 | 220 | 303 | 1380 | 1630 | e510 | 1390 | 3270 | 1220 | 3810 | 1190 | 469 | 615 |
6 | 215 | 410 | 1310 | 1880 | e500 | 2960 | 2910 | 1120 | 3490 | 1040 | 431 | 551 |
7 | 212 | 372 | 1230 | 1600 | e490 | 2560 | 2530 | 1030 | 2890 | 972 | 402 | 503 |
8 | 210 | 335 | 1180 | 1660 | e480 | 2120 | 2260 | 941 | 2490 | 977 | 376 | 465 |
9 | 209 | 308 | 1160 | 1580 | e475 | 1860 | 2020 | 900 | 2220 | 933 | 359 | 432 |
10 | 210 | 292 | 1160 | 1440 | e470 | 1700 | 1810 | 865 | 2180 | 1250 | 365 | 408 |
11 | 206 | 290 | 1190 | 1350 | e460 | 1560 | 1650 | 867 | 4250 | 2270 | 359 | 377 |
12 | 201 | 284 | 1110 | 1310 | e455 | 1440 | 1500 | 918 | 5300 | 2280 | 367 | 356 |
13 | 195 | 272 | 1020 | 1220 | e450 | 1300 | 1400 | 965 | 4430 | 2050 | 340 | 338 |
14 | 223 | 259 | 1010 | 1150 | e445 | 1240 | 1310 | 1320 | 3510 | 1600 | 322 | 325 |
15 | 286 | 256 | 1010 | 1120 | e440 | 1190 | 1220 | 2450 | 4900 | 1560 | 310 | 323 |
16 | 269 | 255 | 989 | 1060 | e435 | 1130 | 1140 | 2690 | 5870 | 1390 | 298 | 363 |
17 | 258 | 259 | 954 | 1040 | e435 | 1130 | 1080 | 2190 | 4640 | 1280 | 292 | 537 |
18 | 237 | 1010 | 907 | 1040 | e440 | 1120 | 1020 | 1940 | 4090 | 1180 | 294 | 444 |
19 | 224 | 4340 | 872 | 965 | 638 | 1060 | 954 | 2620 | 3500 | 1070 | 295 | 353 |
20 | 217 | 5120 | 827 | 842 | 880 | 996 | 929 | 4320 | 2990 | 984 | 296 | 319 |
21 | 211 | 4530 | 775 | e890 | 1130 | 948 | 962 | 3170 | 2660 | 904 | 308 | 297 |
22 | 209 | 3740 | 841 | e800 | 1050 | 893 | 970 | 2660 | 2410 | 852 | 309 | 287 |
23 | 211 | 3250 | 1090 | e730 | 895 | 863 | 888 | 2390 | 2170 | 823 | 293 | 281 |
24 | 211 | 3270 | 1880 | e700 | 849 | 861 | 880 | 2220 | 1970 | 768 | 303 | 271 |
25 | 229 | 3340 | 1950 | e670 | 815 | 871 | 1270 | 8280 | 1870 | 696 | 468 | 262 |
26 | 273 | 2980 | 1710 | e660 | 774 | 1190 | 1730 | 10000 | 1800 | 638 | 1260 | 256 |
27 | 269 | 2710 | 1570 | e700 | 747 | 4380 | 1410 | 7650 | 1670 | 598 | 1940 | 251 |
28 | 267 | 2450 | 1510 | e660 | 721 | 4990 | 1210 | 5810 | 1530 | 564 | 1210 | 248 |
29 | 248 | 2190 | 1470 | e620 | 692 | 5300 | 1110 | 4810 | 1420 | 530 | 1030 | 246 |
30 | 241 | 1990 | 1380 | e590 | --- | 5410 | 1030 | 4300 | 1320 | 519 | 1480 | 245 |
31 | 235 | --- | 1300 | e570 | --- | 4780 | --- | 6820 | --- | 506 | 1400 | --- |
TOTAL | 7083 | 45721 | 39065 | 33287 | 17816 | 57948 | 54433 | 89366 | 103390 | 34154 | 17448 | 12840 |
MEAN | 228 | 1524 | 1260 | 1074 | 614 | 1869 | 1814 | 2883 | 3446 | 1102 | 563 | 428 |
MAX | 286 | 5120 | 1950 | 1880 | 1130 | 5410 | 4680 | 10000 | 8670 | 2280 | 1940 | 1090 |
MIN | 195 | 224 | 775 | 570 | 435 | 668 | 880 | 865 | 1320 | 506 | 292 | 245 |
CFSM | 0.13 | 0.84 | 0.70 | 0.60 | 0.34 | 1.04 | 1.01 | 1.60 | 1.91 | 0.61 | 0.31 | 0.24 |
IN. | 0.15 | 0.94 | 0.81 | 0.69 | 0.37 | 1.19 | 1.12 | 1.84 | 2.13 | 0.70 | 0.36 | 0.26 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1942 - 2004, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 505 | 766 | 1010 | 1141 | 1663 | 2122 | 2402 | 2448 | 1890 | 1214 | 665 | 416 |
MAX | 3666 | 7170 | 7545 | 6674 | 5363 | 8252 | 7523 | 9888 | 8412 | 5819 | 7914 | 4890 |
(WY) | 1978 | 1986 | 1983 | 1993 | 1951 | 1979 | 1979 | 1995 | 1974 | 1981 | 1981 | 1993 |
MIN | 65.0 | 72.7 | 65.6 | 81.7 | 89.5 | 238 | 208 | 308 | 191 | 115 | 101 | 68.1 |
(WY) | 1964 | 1964 | 1964 | 1956 | 1989 | 1954 | 1956 | 1963 | 1963 | 1988 | 1963 | 1954 |
SUMMARY STATISTICS | FOR 2003 CALENDAR YEAR | FOR 2004 WATER YEAR | WATER YEARS 1942 - 2004 | |||
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ANNUAL TOTAL | 399467 | 512551 | ||||
ANNUAL MEAN | 1094 | 1400 | 1351 | |||
HIGHEST ANNUAL MEAN | 3362 | 1993 | ||||
LOWEST ANNUAL MEAN | 315 | 1954 | ||||
HIGHEST DAILY MEAN | 13700 | Jul 12 | 10000 | May 26 | 38700 | May 19 1943 |
LOWEST DAILY MEAN | 195 | Oct 13 | 195 | Oct 13 | 46 | A |
ANNUAL SEVEN-DAY MINIMUM | 206 | Oct 7 | 206 | Oct 7 | 50 | Oct 8 1963 |
MAXIMUM PEAK FLOW | 10900 | May 26 | 41200 | May 19 1943 | ||
MAXIMUM PEAK STAGE | 12.28 | May 26 | 20.50 B | May 19 1943 | ||
INSTANTANEOUS LOW FLOW | 191 | Oct 13 | ||||
ANNUAL RUNOFF (CFSM) | 0.607 | 0.776 | 0.749 | |||
ANNUAL RUNOFF (INCHES) | 8.24 | 10.57 | 10.18 | |||
10 PERCENT EXCEEDS | 2320 | 3380 | 3240 | |||
50 PERCENT EXCEEDS | 772 | 980 | 650 | |||
90 PERCENT EXCEEDS | 239 | 257 | 129 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |