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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 05388250 Upper Iowa River near Dorchester, IA


Allamakee County, Iowa
Hydrologic Unit Code 07060002
Latitude  43°25'16", Longitude  91°30'31" NAD27
Drainage area 770  square miles
Gage datum 659.80 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 1938-10-01 -> 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
1 347 281 686 1,380 961 1,170 1,110 594 634 515 460 395
2 330 274 665 1,300 950 1,120 998 573 575 550 478 391
3 328 271 605 1,110 982 1,050 931 529 550 582 485 387
4 327 340 576 1,110 1,160 891 855 530 546 581 463 379
5 325 299 593 1,070 1,090 876 804 554 551 572 452 376
6 325 288 721 1,050 1,030 866 875 530 575 552 447 429
7 321 314 713 1,040 993 860 843 497 662 526 451 421
8 320 287 738 1,060 957 1,190 836 503 654 511 433 378
9 310 277 820 1,040 945 1,500 787 494 607 548 416 371
10 339 291 960 1,030 923 1,670 838 510 664 589 425 361
11 325 351 1,030 1,100 918 1,310 906 495 553 559 440 356
12 305 350 1,190 1,110 917 1,130 904 474 524 568 504 348
13 287 347 1,230 1,130 920 1,080 781 473 557 583 491 363
14 281 381 1,440 1,090 949 1,030 727 470 533 562 463 376
15 275 378 1,350 1,210 953 981 716 565 517 502 438 377
16 297 406 1,260 1,160 922 1,040 680 644 505 485 436 378
17 322 399 1,140 1,070 885 1,210 680 707 554 472 437 369
18 292 430 1,070 1,080 888 1,220 740 614 490 471 429 350
19 279 456 1,300 1,080 958 1,180 738 561 479 463 448 333
20 284 518 1,310 1,150 951 1,250 718 582 584 461 448 326
21 295 583 1,220 1,240 998 1,150 731 579 748 471 444 318
22 334 720 1,250 1,230 1,110 1,350 751 653 975 503 454 315
23 348 637 1,200 1,130 1,080 1,590 722 676 837 488 461 308
24 305 662 1,260 1,080 1,000 1,370 820 1,080 736 486 473 305
25 297 578 1,170 1,070 918 1,180 764 1,120 680 486 450 311
26 289 526 1,060 1,030 884 1,020 784 888 610 491 426 315
27 291 549 1,020 1,010 868 980 690 759 564 488 413 334
28 286 658 1,100 979 908 1,210 652 721 527 492 407 479
29 285 745 1,060 955 946 1,230 636 758 547 462 405 448
30 284   1,160 977 1,030 1,110 622 757 535 448 402 396
31 280   1,350   1,050   597 657   448   364