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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 05471050 South Skunk River at Colfax, IA


Jasper County, Iowa
Hydrologic Unit Code 07080105
Latitude  41°40'53", Longitude  93°14'47" NAD27
Drainage area 803  square miles
Gage datum 770.00 feet above NGVD29
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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 1985-10-01 -> 2020-09-30)

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
1 304 218 440 943 1,150 1,520 1,490 492 737 412 406 341
2 305 214 495 900 1,190 1,440 1,430 424 735 497 379 352
3 284 218 542 798 1,110 1,310 1,230 409 618 530 363 335
4 264 242 577 781 1,110 1,260 1,150 432 531 489 371 315
5 257 237 601 741 1,160 1,340 1,100 406 472 472 365 300
6 253 229 618 711 1,110 1,310 1,180 365 457 447 372 287
7 247 230 610 711 1,120 1,190 1,090 344 519 426 377 279
8 248 242 678 692 1,130 1,260 945 346 497 421 358 273
9 240 263 780 762 1,140 1,260 981 499 441 473 334 265
10 227 317 927 808 1,270 1,270 1,040 711 413 517 318 260
11 223 355 995 774 1,200 1,330 1,110 892 390 547 301 257
12 215 299 1,010 830 1,180 1,470 1,230 840 446 582 293 257
13 206 258 1,230 910 1,380 1,560 1,210 954 407 550 302 304
14 213 264 1,370 891 1,300 1,600 1,020 1,050 355 547 322 429
15 204 288 1,400 947 1,150 1,720 865 802 312 555 316 468
16 208 291 1,320 958 1,080 1,630 801 665 315 532 321 480
17 233 324 1,150 881 1,120 1,620 779 611 352 483 385 455
18 217 402 1,050 890 1,140 1,720 787 586 392 451 365 390
19 210 521 993 906 1,090 1,860 816 676 389 479 332 343
20 213 613 900 917 1,160 1,900 862 665 384 461 321 324
21 230 619 835 940 1,220 1,740 788 693 445 421 318 313
22 240 601 796 927 1,210 1,730 695 595 440 422 315 303
23 237 535 770 927 1,220 1,590 627 517 469 446 308 303
24 223 503 790 872 1,330 1,510 621 507 484 472 295 304
25 213 461 831 914 1,580 1,450 683 433 516 437 287 311
26 215 419 800 1,060 1,700 1,470 607 430 582 407 276 313
27 210 408 772 1,250 1,690 1,440 546 510 526 380 311 317
28 203 430 749 1,280 1,610 1,390 617 433 466 358 334 366
29 199 636 719 1,210 1,500 1,300 617 554 435 345 333 357
30 197   748 1,090 1,570 1,330 610 623 411 422 341 327
31 206   867   1,610   551 613   435   299