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USGS Daily Statistics for Iowa

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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 06483500 Rock River near Rock Valley, IA


Sioux County, Iowa
Hydrologic Unit Code 10170204
Latitude  43°12'52", Longitude  96°17'39" NAD27
Drainage area 1,592  square miles
Gage datum 1,222.54 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 1948-10-01 -> 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
1 183 145 536 2,000 993 1,100 1,270 322 244 361 379 278
2 184 145 688 1,960 1,070 933 1,070 304 241 380 414 272
3 185 148 701 1,810 1,050 878 965 324 243 378 381 263
4 179 151 812 1,870 968 834 1,010 312 232 374 342 250
5 174 145 807 1,930 888 850 1,070 306 255 388 323 244
6 167 147 835 2,040 885 933 952 332 295 398 316 244
7 162 147 790 2,250 960 1,030 783 324 257 407 308 242
8 163 148 669 2,120 1,010 1,200 715 336 246 425 303 236
9 159 178 599 1,800 1,180 1,050 777 319 242 453 297 228
10 150 360 590 1,410 1,060 894 762 311 246 472 297 223
11 148 362 698 1,200 999 818 802 349 248 450 308 221
12 146 270 958 1,220 929 829 931 353 255 427 327 230
13 145 254 1,100 1,330 865 1,100 826 333 303 400 340 228
14 144 236 1,380 1,290 844 1,420 786 305 388 373 342 225
15 141 245 1,580 1,160 829 1,290 700 304 411 363 338 224
16 139 237 1,330 1,100 779 1,270 620 360 360 370 332 225
17 135 252 1,210 1,030 768 1,850 622 349 369 380 332 231
18 133 262 1,240 1,000 776 1,860 666 319 372 384 337 240
19 139 315 1,280 1,000 769 1,590 572 314 365 390 348 242
20 148 403 1,310 977 752 1,590 524 322 479 389 358 216
21 153 335 1,330 945 750 1,760 514 331 609 371 343 202
22 150 308 1,290 974 781 1,830 574 337 553 357 330 195
23 148 342 1,310 1,090 757 1,570 566 386 533 363 311 190
24 142 387 1,220 1,260 765 1,540 551 336 577 372 296 182
25 136 395 1,210 1,140 788 1,340 573 272 586 362 289 185
26 134 348 1,180 965 817 1,340 560 255 621 351 286 183
27 134 349 1,280 954 878 1,220 495 287 498 337 279 198
28 135 409 1,600 973 1,060 1,180 476 279 411 325 276 197
29 136 568 1,990 996 1,070 1,060 416 267 360 315 282 187
30 140   2,130 983 1,080 1,210 426 283 351 311 281 192
31 143   2,060   1,170   371 293   336   195