LOCATION.-- Lat 42°36'42", long 89°23'53" (NAD of 1927), in SW 1/4 sec.26, T.2 N., R.9 E., Green County, Hydrologic Unit 07090004, on left bank at downstream side of highway bridge, 1.2 mi southwest of Brodhead, and 1.9 mi upstream from Sylvester Creek. |
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DRAINAGE AREA.-- 523 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: January 1914 to current year. Monthly discharge for January and February 1914 published in WSP 1308. |
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REVISED RECORDS.-- WSP 1238: 1914-16, 1918, 1922, 1927, 1933. WSP 1508: 1916-17(M), 1919(M), 1920, 1921(M), 1927-28(M), 1930(M), 1931, 1936(M), 1943(M). WDR WI-73-1: Drainage area. |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 768.14 ft above NGVD of 1929. Prior to Oct. 17, 1938, nonrecording gage 20 ft upstream at same datum. |
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REMARKS.-- Some regulation from dam and non-operational powerplant upstream. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 14,800 ft3/s. September 13, 1915, from rating curve extended above 7,500 ft3/s, gage height, 11.40 feet, from floodmarks; minimum discharge, 35 ft3/s, September 19, 1959. |
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REMARKS FOR CURRENT YEAR.-- Records good 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 | 164 | 198 | 332 | 314 | e200 | 453 | 551 | 323 | 1540 | 449 | 454 | 331 |
2 | 162 | 233 | 320 | 310 | e200 | 501 | 492 | 319 | 1630 | 421 | 409 | 319 |
3 | 169 | 347 | 309 | 311 | e210 | 536 | 453 | 312 | 1360 | 434 | 392 | 320 |
4 | 173 | 670 | 306 | 306 | e220 | 496 | 422 | 305 | 1040 | 661 | 503 | 317 |
5 | 176 | 879 | 310 | e260 | e220 | 747 | 402 | 296 | 817 | 810 | 546 | 304 |
6 | 183 | 985 | 309 | e300 | e220 | 945 | 387 | 293 | 699 | 853 | 520 | 300 |
7 | 199 | 1000 | 305 | e280 | e220 | 1060 | 375 | 290 | 640 | 802 | 443 | 303 |
8 | 175 | 760 | 304 | e260 | e220 | 976 | 368 | 298 | 603 | 675 | 378 | 298 |
9 | 173 | 482 | 308 | e250 | e220 | 656 | 359 | 299 | 567 | 592 | 381 | 291 |
10 | 170 | 395 | 442 | e240 | e220 | 499 | 352 | 321 | 560 | 599 | 374 | 286 |
11 | 169 | 361 | 646 | e230 | e220 | 455 | 336 | 392 | 627 | 596 | 365 | 286 |
12 | 171 | 355 | 646 | e230 | e220 | 420 | 332 | 417 | 769 | 536 | 355 | 281 |
13 | 192 | 338 | 610 | e230 | e220 | 392 | 329 | 393 | 861 | 492 | 349 | 275 |
14 | 198 | 325 | 515 | e230 | e220 | 389 | 324 | 376 | 901 | 460 | 341 | 269 |
15 | 203 | 314 | 497 | e230 | e220 | 378 | 319 | 393 | 893 | 434 | 336 | 278 |
16 | 203 | 310 | 466 | e230 | e210 | 369 | 313 | 399 | 743 | 457 | 329 | 296 |
17 | 191 | 302 | 406 | e230 | e210 | 363 | 324 | 364 | 756 | 540 | 329 | 303 |
18 | 187 | 318 | 380 | e220 | e220 | 363 | 355 | 368 | 784 | 573 | 332 | 293 |
19 | 186 | 357 | 365 | e220 | e230 | 361 | 353 | 410 | 765 | 514 | 331 | 279 |
20 | 186 | 373 | 334 | e210 | e240 | 364 | 342 | 417 | 670 | 453 | 328 | 270 |
21 | 185 | 344 | 339 | e210 | e270 | 355 | 464 | 393 | 597 | 432 | 322 | 264 |
22 | 184 | 323 | 378 | e210 | e350 | 349 | 515 | 1090 | 612 | 469 | 315 | 260 |
23 | 183 | 339 | 341 | e210 | e500 | 340 | 491 | 1890 | 603 | 493 | 309 | 257 |
24 | 186 | 407 | 330 | e210 | e600 | 351 | 414 | 3230 | 560 | 450 | 309 | 255 |
25 | 205 | 512 | 292 | e210 | e680 | 368 | 394 | 4080 | 539 | 419 | 314 | 251 |
26 | 225 | 527 | 306 | e210 | e750 | 447 | 386 | 2860 | 532 | 401 | 326 | 250 |
27 | 218 | 452 | 339 | e210 | e650 | 598 | 374 | 1950 | 506 | 387 | 334 | 248 |
28 | 209 | 392 | 339 | e210 | e550 | 755 | 354 | 1390 | 480 | 372 | 359 | 246 |
29 | 203 | 359 | 337 | e200 | 464 | 839 | 337 | 1060 | 496 | 358 | 384 | 244 |
30 | 203 | 344 | 336 | e200 | --- | 737 | 325 | 969 | 467 | 396 | 373 | 245 |
31 | 202 | --- | 327 | e200 | --- | 639 | --- | 1250 | --- | 477 | 352 | --- |
TOTAL | 5833 | 13301 | 11774 | 7371 | 9174 | 16501 | 11542 | 27147 | 22617 | 16005 | 11492 | 8419 |
MEAN | 188 | 443 | 380 | 238 | 316 | 532 | 385 | 876 | 754 | 516 | 371 | 281 |
MAX | 225 | 1000 | 646 | 314 | 750 | 1060 | 551 | 4080 | 1630 | 853 | 546 | 331 |
MIN | 162 | 198 | 292 | 200 | 200 | 340 | 313 | 290 | 467 | 358 | 309 | 244 |
CFSM | 0.36 | 0.85 | 0.73 | 0.45 | 0.60 | 1.02 | 0.74 | 1.67 | 1.44 | 0.99 | 0.71 | 0.54 |
IN. | 0.41 | 0.95 | 0.84 | 0.52 | 0.65 | 1.17 | 0.82 | 1.93 | 1.61 | 1.14 | 0.82 | 0.60 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1914 - 2004, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 286 | 309 | 273 | 293 | 428 | 651 | 462 | 381 | 380 | 305 | 261 | 297 |
MAX | 788 | 836 | 597 | 1168 | 1690 | 1698 | 1159 | 1368 | 1320 | 1248 | 694 | 1579 |
(WY) | 1928 | 1962 | 1929 | 1916 | 1938 | 1929 | 1993 | 1973 | 2000 | 1993 | 1924 | 1938 |
MIN | 126 | 127 | 120 | 89.4 | 127 | 181 | 198 | 140 | 113 | 117 | 105 | 106 |
(WY) | 1965 | 1965 | 1956 | 1956 | 1959 | 1934 | 1938 | 1934 | 1934 | 1958 | 1934 | 1958 |
SUMMARY STATISTICS | FOR 2003 CALENDAR YEAR | FOR 2004 WATER YEAR | WATER YEARS 1914 - 2004 | |||
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ANNUAL TOTAL | 97065 | 161176 | ||||
ANNUAL MEAN | 266 | 440 | 360 | |||
HIGHEST ANNUAL MEAN | 694 | 1993 | ||||
LOWEST ANNUAL MEAN | 172 | 1934 | ||||
HIGHEST DAILY MEAN | 1000 | Nov 7 | 4080 | May 25 | 10800 | Mar 14 1929 |
LOWEST DAILY MEAN | 112 | Sep 8 | 162 | Oct 2 | 51 | Jun 13 1934 |
ANNUAL SEVEN-DAY MINIMUM | 121 | Sep 6 | 175 | Oct 1 | 71 | Jun 28 1934 |
MAXIMUM PEAK FLOW | 4360 | May 25 | 14800 A | Sep 13 1915 | ||
MAXIMUM PEAK STAGE | 8.30 | May 25 | 11.40 B | Sep 13 1915 | ||
INSTANTANEOUS LOW FLOW | 35 | Sep 19 1959 | ||||
ANNUAL RUNOFF (CFSM) | 0.508 | 0.842 | 0.689 | |||
ANNUAL RUNOFF (INCHES) | 6.90 | 11.46 | 9.36 | |||
10 PERCENT EXCEEDS | 406 | 744 | 587 | |||
50 PERCENT EXCEEDS | 232 | 350 | 264 | |||
90 PERCENT EXCEEDS | 163 | 210 | 151 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |