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USGS Daily Statistics for New York

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 04130002
Latitude  42°07'20", Longitude  77°57'26" NAD83
Drainage area 288  square miles
Contributing drainage area 288  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 1,050 525 248 231 191 87 196 362 618
2 534 395 505 1,040 528 242 212 148 135 177 330 524
3 446 397 581 1,000 490 254 194 140 142 181 301 474
4 501 339 667 1,100 475 268 180 142 117 183 263 448
5 463 384 723 1,150 448 333 175 139 96 188 270 420
6 419 425 796 934 450 447 158 159 103 227 283 497
7 368 373 669 936 421 308 194 154 86 215 256 445
8 442 392 696 935 395 239 250 144 84 179 313 401
9 455 335 659 844 430 260 184 174 190 191 334 397
10 411 353 636 864 472 210 151 200 168 172 327 454
11 419 349 733 831 575 186 128 151 119 184 324 489
12 547 413 735 830 655 220 149 185 151 175 334 470
13 606 358 748 862 548 249 144 159 209 148 308 463
14 606 408 843 809 567 345 140 237 219 159 283 496
15 461 412 982 771 552 292 139 167 136 162 292 516
16 396 436 742 781 590 313 139 127 131 173 351 449
17 355 490 766 798 485 304 214 113 162 167 400 443
18 385 595 773 630 429 256 218 202 288 228 354 486
19 599 516 734 596 467 238 143 270 193 251 352 419
20 588 549 779 610 414 319 135 150 177 308 392 392
21 427 563 843 579 448 424 169 198 141 395 331 474
22 353 570 844 534 378 268 248 177 202 275 316 507
23 384 590 773 538 372 218 224 136 222 242 356 542
24 463 695 759 552 361 202 254 108 161 243 315 576
25 599 704 770 555 303 200 213 99 269 261 324 591
26 540 536 811 573 292 243 160 91 292 256 438 502
27 494 588 757 531 256 225 174 91 209 369 492 543
28 409 608 777 501 287 245 157 96 232 420 530 517
29 388 592 851 531 316 284 143 117 204 326 511 474
30 393   901 554 288 262 130 124 277 423 502 549
31 406   967   234   153 108   326   531