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USGS Daily Statistics for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

NOTE: Station Numbers for Iowa precipitation gages have changed (see list).


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 -> 2024-09-30)

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
1 335 218 714 1,870 1,330 1,460 1,380 542 722 494 507 408
2 336 231 728 1,790 1,250 1,390 1,350 502 632 562 555 392
3 327 223 753 1,700 1,250 1,310 1,270 470 572 502 551 379
4 319 225 802 1,690 1,240 1,190 1,150 433 575 490 530 364
5 318 228 958 1,640 1,210 1,210 1,010 452 592 513 511 364
6 385 238 1,120 1,580 1,270 1,130 892 489 555 528 504 380
7 364 252 1,150 1,560 1,370 1,060 808 504 503 515 485 361
8 310 248 1,140 1,470 1,400 1,080 859 505 521 513 470 347
9 302 280 1,080 1,380 1,300 1,180 990 504 506 539 452 330
10 286 301 1,120 1,320 1,240 1,270 894 464 420 558 451 325
11 269 293 1,270 1,290 1,200 1,280 799 441 384 520 436 306
12 253 290 1,320 1,270 1,180 1,290 740 423 373 522 445 308
13 254 312 1,320 1,270 1,190 1,390 672 411 416 522 456 325
14 240 326 1,450 1,300 1,180 1,430 669 456 455 542 456 364
15 222 325 1,650 1,360 1,150 1,400 686 454 424 529 446 411
16 213 322 1,690 1,410 1,080 1,320 663 429 401 496 442 403
17 229 322 1,700 1,470 1,130 1,350 825 402 398 468 443 370
18 241 347 1,750 1,500 1,260 1,340 913 388 388 458 437 351
19 237 393 1,850 1,510 1,180 1,280 780 446 383 448 428 331
20 246 491 1,940 1,480 1,090 1,220 663 553 421 421 418 321
21 257 593 1,850 1,480 1,050 1,180 697 624 535 401 408 305
22 257 581 1,780 1,440 1,130 1,250 717 608 503 401 410 295
23 264 611 1,700 1,370 1,330 1,260 955 582 550 465 420 287
24 269 636 1,690 1,330 1,330 1,260 1,220 630 671 484 417 286
25 273 646 1,650 1,340 1,320 1,200 1,100 713 726 470 415 284
26 253 683 1,700 1,420 1,310 1,280 846 795 688 454 411 305
27 243 712 1,820 1,440 1,300 1,270 692 696 627 444 411 319
28 238 721 1,830 1,380 1,290 1,260 606 658 530 434 404 343
29 228 781 1,930 1,310 1,300 1,270 592 719 489 428 410 357
30 220   2,020 1,400 1,410 1,360 565 739 482 458 416 357
31 219   1,920   1,480   587 736   468   373