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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°25'22.8", Longitude  96°09'52.5" NAD27
Drainage area 853  square miles
Gage datum 1,308.57 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 2000-10-01 -> 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
1 236 180 379 940 894 801 704 257 139 363 311 270
2 231 177 420 892 922 757 708 250 133 362 305 263
3 217 168 406 800 862 719 683 253 127 406 297 250
4 204 161 387 728 789 665 668 258 122 479 291 255
5 197 151 425 657 799 737 717 273 137 526 288 251
6 188 154 458 636 856 912 741 248 150 567 288 252
7 185 154 471 801 892 783 659 245 142 590 285 246
8 188 146 477 1,070 851 721 625 232 144 578 277 242
9 178 143 530 783 793 705 561 208 165 541 273 236
10 165 226 551 650 778 688 540 227 179 567 262 233
11 165 225 530 654 790 672 598 319 217 571 254 244
12 159 218 665 663 817 692 570 274 309 533 246 254
13 152 221 881 667 797 1,170 582 229 565 463 253 253
14 151 208 1,650 702 740 1,080 613 204 803 428 264 254
15 148 194 1,710 713 689 1,200 667 208 515 419 268 257
16 143 183 1,510 715 652 1,960 675 217 490 425 262 253
17 145 188 1,510 778 665 2,250 588 277 459 423 263 243
18 143 197 1,430 825 701 1,680 463 320 365 409 282 229
19 148 201 1,370 795 656 1,300 414 345 313 395 308 214
20 169 227 1,340 763 631 983 435 354 481 383 303 226
21 190 245 1,330 787 726 1,280 439 356 547 367 286 221
22 195 251 1,280 809 747 1,580 432 339 524 365 277 214
23 191 270 1,130 847 707 1,550 393 305 627 385 271 212
24 174 288 1,050 830 719 1,340 397 267 833 396 286 203
25 162 275 943 776 756 1,210 476 226 1,160 385 282 206
26 157 235 794 743 730 1,200 396 200 847 377 265 220
27 162 229 715 744 862 1,100 353 181 666 366 248 229
28 160 232 766 796 1,040 1,030 356 173 523 350 266 223
29 169 621 930 816 981 874 347 163 438 334 281 209
30 173   926 827 941 753 314 154 390 324 278 224
31 178   907   893   284 147   317   247