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USGS Daily Statistics for South Dakota

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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 1,940 978 1,100 1,230 315 239 348 375 271
2 180 142 659 1,920 1,060 931 1,040 297 236 366 407 266
3 180 145 671 1,790 1,040 873 938 316 237 365 375 257
4 174 148 776 1,840 956 829 978 304 229 361 338 245
5 170 143 772 1,890 879 842 1,040 299 255 374 319 239
6 163 145 809 1,990 875 920 933 325 292 384 312 239
7 158 145 769 2,200 946 1,010 812 318 254 392 305 236
8 159 146 654 2,080 989 1,170 744 331 242 409 299 229
9 155 176 587 1,780 1,160 1,030 783 313 237 435 294 222
10 146 348 578 1,430 1,040 885 760 305 240 454 293 217
11 144 350 681 1,220 983 814 793 339 242 432 303 215
12 143 262 931 1,250 915 824 911 343 249 412 322 224
13 142 246 1,060 1,350 861 1,080 808 323 293 386 334 222
14 141 229 1,340 1,310 848 1,390 768 297 374 360 335 220
15 137 238 1,530 1,160 831 1,260 685 296 395 350 331 219
16 136 230 1,290 1,100 779 1,240 608 348 347 358 325 220
17 132 244 1,170 1,030 766 1,780 608 338 356 366 325 226
18 131 254 1,200 997 772 1,790 648 308 358 370 329 233
19 136 304 1,240 996 763 1,550 559 303 352 376 340 236
20 144 388 1,270 969 746 1,550 512 311 459 376 349 211
21 149 323 1,280 942 743 1,720 502 319 582 361 335 198
22 146 297 1,250 970 771 1,780 558 325 531 349 322 191
23 144 329 1,270 1,070 747 1,530 550 371 512 357 304 186
24 138 373 1,190 1,230 754 1,500 536 323 554 365 290 178
25 133 380 1,180 1,120 775 1,310 556 263 562 356 282 180
26 131 335 1,150 954 803 1,300 543 246 594 344 280 179
27 131 337 1,250 941 862 1,190 481 277 478 332 273 193
28 132 393 1,550 959 1,040 1,150 462 269 396 321 270 193
29 134 542 1,930 980 1,050 1,030 406 259 347 314 276 183
30 137   2,070 968 1,060 1,180 414 277 338 313 274 187
31 140   2,000   1,160   362 287   335   190