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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 04221000 GENESEE RIVER AT WELLSVILLE NY


Allegany County, New York
Hydrologic Unit Code 041300020503
Latitude  42°07'20.2", Longitude  77°57'26.2" NAD83
Drainage area 288.0  square miles
Contributing drainage area 288.0  square miles
Gage datum 1,469.51 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1972-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 532 363 529 1,050 522 252 229 190 87 196 362 618
2 534 395 505 1,040 525 245 210 147 135 177 330 524
3 446 397 581 1,000 496 256 192 138 142 181 301 474
4 501 339 667 1,100 486 268 179 140 117 183 263 448
5 463 384 723 1,150 465 331 173 138 96 188 270 420
6 419 425 796 934 520 447 157 157 103 227 283 497
7 368 373 669 929 452 321 192 152 86 215 256 445
8 442 392 696 927 412 244 247 142 84 179 313 401
9 455 335 659 837 441 274 182 172 190 191 334 397
10 411 353 636 857 478 232 150 197 168 172 327 454
11 419 349 733 826 576 196 127 151 119 184 324 489
12 547 413 735 824 652 226 148 185 151 175 334 470
13 606 358 748 854 546 253 143 159 209 148 308 463
14 606 408 843 802 567 347 141 237 219 159 283 496
15 461 412 982 766 550 294 139 167 136 162 292 516
16 396 436 742 776 591 313 142 127 131 173 351 449
17 355 490 766 791 486 304 226 113 162 167 400 443
18 385 595 773 626 431 257 218 202 288 228 354 486
19 599 516 734 592 467 248 143 270 193 251 352 419
20 588 549 779 606 413 322 135 150 177 308 392 392
21 427 563 843 575 451 423 168 198 141 395 331 474
22 353 570 844 537 386 269 245 177 202 275 316 507
23 384 590 773 536 377 219 221 136 222 242 356 542
24 463 695 759 549 364 202 250 108 161 243 315 576
25 599 704 770 552 307 200 210 99 269 261 324 591
26 540 536 811 574 295 243 158 91 292 256 438 502
27 494 588 757 529 258 225 172 91 209 369 492 543
28 409 608 777 499 291 243 156 96 232 420 530 517
29 388 592 851 528 326 282 141 117 204 326 511 474
30 393   901 553 292 260 128 124 277 423 502 549
31 406   967   239   152 108   326   531