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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 06808500 West Nishnabotna River at Randolph, IA


Fremont County, Iowa
Hydrologic Unit Code 10240002
Latitude  40°52'23.8", Longitude  95°34'53.2" NAD83
Drainage area 1,326  square miles
Gage datum 933.78 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 1948-10-01 -> 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
1 352 392 1,050 937 1,250 1,250 1,170 622 569 556 454 395
2 354 407 954 841 1,020 1,560 1,150 604 604 575 464 399
3 359 373 977 782 1,030 1,140 1,340 620 500 501 453 386
4 362 375 891 790 947 1,280 1,160 630 532 491 440 381
5 343 401 904 813 1,030 1,520 1,110 588 595 515 428 375
6 337 390 748 763 1,190 1,200 1,130 740 663 505 424 370
7 332 393 712 764 1,280 1,270 967 825 559 520 415 362
8 329 412 673 746 1,360 1,350 1,010 1,010 643 520 415 360
9 327 432 705 747 1,360 1,380 1,230 718 666 534 459 354
10 321 488 771 722 1,240 1,280 1,240 582 631 520 436 350
11 319 467 935 708 1,200 1,230 1,050 530 579 637 425 352
12 316 413 1,060 734 1,140 1,660 1,010 636 663 659 433 347
13 313 417 1,250 725 1,100 1,610 988 596 767 540 429 396
14 315 425 1,310 753 1,070 1,820 883 541 837 525 419 487
15 322 427 1,260 842 993 2,130 881 605 558 645 410 488
16 372 467 969 865 997 1,820 844 557 522 553 417 426
17 383 510 1,060 793 1,160 1,440 806 590 529 539 430 432
18 442 649 1,080 770 1,060 1,380 1,000 589 528 495 440 389
19 364 898 1,150 767 1,100 1,290 872 531 522 477 442 377
20 347 897 1,040 771 1,010 1,250 918 649 545 469 436 375
21 350 784 919 783 1,160 1,660 790 597 496 465 423 370
22 344 690 869 821 1,250 1,510 939 615 511 479 417 363
23 347 692 870 796 1,150 1,380 871 644 523 494 405 366
24 356 721 802 810 1,190 1,370 779 533 522 502 399 371
25 336 719 826 871 1,360 1,320 896 605 503 478 389 369
26 326 697 779 877 1,600 1,270 960 520 629 458 385 368
27 323 716 832 911 1,490 1,400 730 506 607 443 384 400
28 317 863 919 991 1,370 1,380 695 549 496 434 383 434
29 313 693 999 910 1,510 1,200 673 817 473 431 383 445
30 320   946 1,110 1,400 1,110 722 716 484 443 391 472
31 341   917   1,300   700 656   462   392