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 (767.88 ft NAVD 1988). 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 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 254 | 336 | 342 | e310 | e290 | 408 | 503 | 303 | 255 | 204 | 198 | 151 |
2 | 267 | 356 | 328 | 347 | e280 | 377 | 497 | 300 | 248 | 212 | 190 | 149 |
3 | 274 | 392 | 317 | 399 | e280 | 358 | 451 | 298 | 251 | 211 | 184 | 146 |
4 | 274 | 399 | 312 | 405 | e280 | 359 | 412 | 299 | 260 | 223 | 184 | 146 |
5 | 266 | 375 | 306 | 346 | e280 | 373 | 394 | 276 | 357 | 242 | 181 | 146 |
6 | 261 | 363 | 315 | e510 | e320 | 572 | 386 | 282 | 454 | 243 | 177 | 147 |
7 | 261 | 347 | 362 | e480 | e800 | 956 | 374 | 286 | 356 | 222 | 172 | 146 |
8 | 291 | 331 | 452 | e420 | e1200 | 1160 | 392 | 289 | 299 | 214 | 168 | 144 |
9 | 303 | 317 | 515 | e350 | e1600 | 1310 | 442 | 287 | 276 | 205 | 165 | 147 |
10 | 308 | 313 | 476 | e310 | e1200 | 1130 | 405 | 286 | 265 | 197 | 163 | 149 |
11 | 312 | 308 | 426 | e290 | e900 | 680 | 369 | 300 | 264 | 190 | 163 | 147 |
12 | 284 | 305 | 413 | e290 | 580 | 496 | 364 | 342 | 281 | 198 | 180 | 144 |
13 | 293 | 299 | 393 | e450 | 547 | 434 | 378 | 385 | 264 | 212 | 194 | 141 |
14 | 293 | 296 | e310 | e700 | 1550 | 406 | 382 | 423 | 257 | 202 | 190 | 142 |
15 | 277 | 296 | e300 | e870 | 2480 | 388 | 361 | 435 | 252 | 190 | 180 | 144 |
16 | 277 | 301 | e270 | e900 | 2590 | 380 | 344 | 372 | 244 | 182 | 174 | 150 |
17 | 274 | 307 | e260 | e890 | 1880 | 391 | 337 | 334 | 238 | 178 | 168 | 149 |
18 | 273 | 309 | e240 | e800 | 1280 | 402 | 331 | 314 | 231 | 174 | 171 | 151 |
19 | 276 | 314 | e240 | e600 | 777 | 422 | 323 | 320 | 226 | 160 | 181 | 174 |
20 | 277 | 319 | e230 | e510 | 588 | 547 | 322 | 355 | 221 | 163 | 189 | 193 |
21 | 278 | 324 | e220 | e450 | 499 | 627 | 333 | 429 | 217 | 185 | 176 | 185 |
22 | 280 | 319 | e210 | e420 | e490 | 643 | 347 | 379 | 206 | 225 | 166 | 169 |
23 | 322 | 313 | e210 | e400 | e480 | 629 | 365 | 335 | 199 | 240 | 166 | 162 |
24 | 382 | 307 | e210 | e380 | 455 | 552 | 367 | 312 | 199 | 229 | 164 | 164 |
25 | 422 | 299 | e210 | e370 | 428 | 514 | 342 | 298 | 206 | 252 | 159 | 193 |
26 | 378 | 295 | e210 | e350 | 449 | 488 | 333 | 291 | 263 | 291 | 157 | 230 |
27 | 342 | 316 | e210 | e340 | 465 | 467 | 329 | 281 | 337 | 302 | 162 | 234 |
28 | 327 | 356 | e240 | e330 | 433 | 447 | 320 | 279 | 313 | 269 | 163 | 215 |
29 | 323 | 384 | e240 | e320 | --- | 448 | 312 | 276 | 263 | 240 | 158 | 205 |
30 | 324 | 362 | e260 | e320 | --- | 456 | 307 | 278 | 243 | 219 | 155 | 204 |
31 | 327 | --- | e280 | e310 | --- | 484 | --- | 272 | --- | 209 | 153 | --- |
TOTAL | 9300 | 9858 | 9307 | 14167 | 23401 | 17304 | 11122 | 9916 | 7945 | 6683 | 5351 | 4967 |
MEAN | 300 | 329 | 300 | 457 | 836 | 558 | 371 | 320 | 265 | 216 | 173 | 166 |
MAX | 422 | 399 | 515 | 900 | 2590 | 1310 | 503 | 435 | 454 | 302 | 198 | 234 |
MIN | 254 | 295 | 210 | 290 | 280 | 358 | 307 | 272 | 199 | 160 | 153 | 141 |
CFSM | 0.57 | 0.63 | 0.57 | 0.87 | 1.60 | 1.07 | 0.71 | 0.61 | 0.51 | 0.41 | 0.33 | 0.32 |
IN. | 0.66 | 0.70 | 0.66 | 1.01 | 1.66 | 1.23 | 0.79 | 0.71 | 0.57 | 0.48 | 0.38 | 0.35 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1914 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 286 | 309 | 274 | 295 | 433 | 650 | 461 | 380 | 378 | 304 | 260 | 295 |
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 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1914 - 2005 | |||
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ANNUAL TOTAL | 158733 | 129321 | ||||
ANNUAL MEAN | 434 | 354 | 360 | |||
HIGHEST ANNUAL MEAN | 694 | 1993 | ||||
LOWEST ANNUAL MEAN | 172 | 1934 | ||||
HIGHEST DAILY MEAN | 4080 | May 25 | 2590 | Feb 16 | 10800 | Mar 14 1929 |
LOWEST DAILY MEAN | 200 | A | 141 | Sep 13 | 51 | Jun 13 1934 |
ANNUAL SEVEN-DAY MINIMUM | 203 | Jan 27 | 145 | Sep 8 | 71 | Jun 28 1934 |
MAXIMUM PEAK FLOW | 2850 | Feb 16 | 14800 B | Sep 13 1915 | ||
MAXIMUM PEAK STAGE | 7.06 | Feb 16 | 11.40 C | Sep 13 1915 | ||
INSTANTANEOUS LOW FLOW | 35 | Sep 19 1959 | ||||
ANNUAL RUNOFF (CFSM) | 0.829 | 0.677 | 0.689 | |||
ANNUAL RUNOFF (INCHES) | 11.29 | 9.20 | 9.36 | |||
10 PERCENT EXCEEDS | 676 | 501 | 585 | |||
50 PERCENT EXCEEDS | 336 | 302 | 265 | |||
90 PERCENT EXCEEDS | 220 | 168 | 151 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |