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USGS Daily Statistics for the Nation

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°12'54.3", Longitude  96°17'42.1" NAD83
Drainage area 1,592  square miles
Gage datum 1,223.39 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 1948-10-01 -> 2024-09-30)

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
1 178 142 515 1,920 981 1,120 1,260 321 240 348 375 271
2 180 142 659 1,900 1,060 960 1,070 303 237 366 407 266
3 180 145 671 1,770 1,040 905 969 320 238 365 375 257
4 174 148 776 1,820 961 856 1,000 308 230 361 338 245
5 170 143 772 1,870 883 865 1,060 303 255 374 319 239
6 163 145 800 1,970 878 937 955 329 291 384 312 239
7 158 145 761 2,170 952 1,020 834 321 254 392 305 236
8 159 146 647 2,060 998 1,180 766 334 242 409 299 229
9 155 176 581 1,760 1,170 1,040 803 316 237 435 294 222
10 146 348 572 1,420 1,060 893 778 308 240 454 293 217
11 144 350 674 1,210 996 822 808 342 242 432 303 215
12 143 262 920 1,240 925 830 924 345 248 412 322 224
13 142 246 1,050 1,340 869 1,080 821 325 292 386 334 222
14 141 229 1,320 1,290 854 1,380 780 299 371 360 335 220
15 137 238 1,510 1,150 836 1,260 696 299 392 350 331 219
16 136 230 1,270 1,090 784 1,240 619 350 345 358 325 220
17 132 244 1,160 1,030 770 1,780 618 340 356 366 325 226
18 131 254 1,190 994 776 1,800 657 310 358 370 329 233
19 136 304 1,230 993 767 1,580 568 305 352 376 340 236
20 144 388 1,250 967 749 1,590 521 312 459 376 349 211
21 149 323 1,270 939 746 1,950 510 321 582 361 335 198
22 146 297 1,240 966 777 3,190 564 325 531 349 322 191
23 144 329 1,260 1,070 760 2,070 557 371 512 357 304 186
24 138 373 1,180 1,230 772 1,790 541 324 554 365 290 178
25 133 380 1,170 1,110 797 1,470 561 264 562 356 282 180
26 131 335 1,140 949 824 1,410 548 248 594 344 280 179
27 131 337 1,240 936 876 1,260 486 278 478 332 273 193
28 132 393 1,540 955 1,040 1,200 467 270 396 321 270 193
29 134 542 1,910 978 1,050 1,080 411 260 347 314 276 183
30 137   2,040 968 1,060 1,220 419 278 338 313 274 187
31 140   1,980   1,160   367 287   335   190