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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 06605850 Little Sioux River at Linn Grove, IA


Buena Vista County, Iowa
Hydrologic Unit Code 10230003
Latitude  42°53'46.7", Longitude  95°14'34.8" NAD83
Drainage area 1,548  square miles
Gage datum 1,223.87 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
1 293 221 586 1,680 1,660 1,640 1,770 583 462 518 456 423
2 280 218 614 1,670 1,680 1,600 1,800 536 435 529 456 411
3 277 221 644 1,660 1,700 1,570 1,660 503 400 545 463 398
4 276 218 677 1,660 1,730 1,530 1,490 476 366 555 472 387
5 271 214 708 1,630 1,690 1,510 1,370 461 365 572 478 372
6 261 215 749 1,590 1,660 1,500 1,280 452 371 582 464 364
7 251 211 826 1,570 1,640 1,480 1,240 462 362 577 449 347
8 249 210 907 1,550 1,630 1,470 1,210 455 364 608 437 334
9 245 212 863 1,530 1,650 1,440 1,200 451 359 643 434 332
10 228 225 845 1,500 1,640 1,420 1,230 445 348 663 440 327
11 222 240 860 1,500 1,620 1,420 1,260 438 338 664 442 323
12 224 248 915 1,530 1,620 1,470 1,280 437 323 654 446 329
13 223 274 969 1,600 1,640 1,560 1,320 438 320 641 461 339
14 222 304 1,070 1,680 1,680 1,590 1,310 452 326 626 468 343
15 222 323 1,290 1,720 1,680 1,680 1,310 444 371 604 470 349
16 222 338 1,640 1,690 1,640 1,740 1,300 425 412 571 465 357
17 224 362 1,770 1,640 1,610 1,880 1,280 409 463 543 456 362
18 223 380 1,650 1,610 1,570 2,040 1,200 410 498 527 457 358
19 227 407 1,630 1,580 1,520 2,040 1,110 426 565 513 462 348
20 235 450 1,570 1,590 1,480 1,990 1,030 428 602 508 473 334
21 243 484 1,490 1,610 1,490 2,000 949 420 778 504 487 322
22 242 501 1,500 1,640 1,550 2,190 902 415 857 504 495 312
23 234 510 1,500 1,660 1,570 2,860 871 454 766 507 495 294
24 228 513 1,490 1,650 1,560 2,720 841 468 690 515 479 280
25 220 511 1,480 1,650 1,560 2,510 824 469 659 518 463 278
26 213 493 1,470 1,650 1,550 2,320 808 470 639 517 450 284
27 212 505 1,490 1,620 1,570 2,220 778 486 621 506 432 296
28 214 529 1,540 1,630 1,590 2,090 729 471 585 493 429 313
29 217 735 1,590 1,700 1,610 1,940 693 470 543 486 432 308
30 221   1,640 1,670 1,660 1,840 655 459 516 476 431 305
31 219   1,660   1,670   622 465   465   304