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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 05421000 Wapsipinicon River at Independence, IA


Buchanan County, Iowa
Hydrologic Unit Code 07080102
Latitude  42°27'49", Longitude  91°53'42" NAD27
Drainage area 1,048  square miles
Gage datum 882.74 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 1933-10-01 -> 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
1 339 217 708 1,850 1,360 1,460 1,420 544 717 489 503 406
2 337 230 722 1,780 1,270 1,380 1,390 504 627 556 550 390
3 326 222 747 1,700 1,260 1,300 1,310 471 568 498 548 377
4 317 224 796 1,680 1,250 1,180 1,190 435 571 485 529 362
5 317 227 952 1,630 1,210 1,200 1,050 453 587 508 510 362
6 383 237 1,110 1,580 1,280 1,120 940 489 551 523 502 377
7 362 250 1,140 1,560 1,370 1,050 860 503 499 510 484 359
8 309 246 1,130 1,470 1,400 1,070 902 504 517 508 468 345
9 300 278 1,080 1,380 1,290 1,180 1,030 503 502 534 450 328
10 285 299 1,110 1,310 1,230 1,270 928 464 417 553 449 323
11 267 291 1,260 1,290 1,200 1,280 831 441 381 515 434 304
12 252 288 1,320 1,270 1,180 1,290 766 422 370 517 443 306
13 252 309 1,320 1,260 1,190 1,390 691 410 412 517 453 323
14 239 324 1,440 1,290 1,180 1,420 683 454 451 537 453 362
15 221 322 1,640 1,350 1,140 1,390 697 453 421 523 444 408
16 212 319 1,680 1,400 1,080 1,320 687 428 398 491 439 400
17 228 320 1,680 1,460 1,120 1,360 841 401 395 464 440 368
18 239 345 1,740 1,490 1,250 1,360 922 387 385 453 434 349
19 235 389 1,840 1,500 1,170 1,300 786 444 380 443 427 329
20 244 487 1,930 1,470 1,080 1,250 669 550 417 417 417 320
21 255 587 1,840 1,480 1,050 1,210 701 620 530 397 408 303
22 255 576 1,760 1,460 1,140 1,270 720 604 498 397 409 293
23 262 605 1,690 1,400 1,340 1,290 955 579 545 461 419 286
24 267 630 1,680 1,360 1,340 1,310 1,220 625 665 479 416 284
25 271 640 1,640 1,390 1,330 1,260 1,100 708 719 466 414 283
26 251 677 1,690 1,480 1,320 1,320 851 789 682 449 409 304
27 241 706 1,800 1,500 1,300 1,320 697 691 621 440 409 318
28 236 715 1,820 1,430 1,290 1,310 610 653 525 430 403 343
29 226 781 1,920 1,350 1,300 1,320 595 713 484 424 408 361
30 218   2,000 1,430 1,410 1,410 567 733 477 455 413 362
31 217   1,900   1,470   589 730   465   378