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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 06483290 Rock River below Tom Creek at Rock Rapids, IA


Lyon County, Iowa
Hydrologic Unit Code 10170204
Latitude  43°25'23.3", Longitude  96°09'53.7" NAD83
Drainage area 853  square miles
Gage datum 1,308.93 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 2000-10-01 -> 2022-09-30)

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
1 221 170 352 877 844 816 655 244 143 340 317 259
2 216 167 390 830 883 759 656 237 135 340 307 253
3 204 159 379 744 829 712 628 239 134 380 297 241
4 191 153 361 678 757 656 612 243 152 446 290 244
5 186 143 399 614 763 717 652 256 164 488 286 241
6 177 146 433 595 812 874 746 234 165 524 284 238
7 174 146 451 745 843 758 779 231 150 545 280 231
8 177 139 459 995 807 699 698 219 147 534 272 228
9 168 137 504 749 756 669 592 198 164 500 267 223
10 156 212 519 633 747 653 555 215 175 523 257 220
11 156 211 498 631 756 638 599 298 208 527 251 230
12 151 205 619 634 787 654 566 257 291 492 244 238
13 145 207 813 634 806 1,100 572 215 522 430 249 237
14 144 195 1,500 662 761 1,030 595 192 737 398 258 238
15 141 183 1,570 673 697 1,110 641 196 476 390 262 242
16 136 173 1,380 672 649 1,750 645 204 453 395 257 240
17 139 177 1,380 728 653 2,000 563 258 424 393 256 230
18 137 185 1,310 769 682 1,510 446 296 338 380 274 216
19 141 188 1,260 740 638 1,210 399 318 292 367 296 203
20 160 212 1,240 710 611 931 416 326 445 358 292 214
21 179 229 1,230 732 693 1,180 418 328 509 353 276 209
22 184 234 1,190 752 708 1,450 409 312 496 367 267 202
23 180 251 1,050 786 669 1,420 377 282 589 388 261 201
24 165 267 980 771 678 1,230 378 247 772 391 275 191
25 154 256 886 723 713 1,110 448 210 1,070 375 270 194
26 150 221 749 692 689 1,090 375 186 781 365 253 206
27 153 216 674 693 812 1,000 337 169 616 354 241 214
28 152 219 717 741 970 945 338 162 486 346 257 209
29 161 621 865 758 928 808 328 162 408 345 269 196
30 164   865 771 927 699 298 162 365 340 266 210
31 169   852   912   269 156   329   231