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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 05471000 South Skunk River below Ioway Creek near Ames, IA


Story County, Iowa
Hydrologic Unit Code 07080105
Latitude  42°00'29.6", Longitude  93°35'45.5" NAD83
Drainage area 556  square miles
Gage datum 857.86 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 1952-10-01 -> 2025-09-30)

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
1 164 138 385 746 634 745 834 272 248 249 248 164
2 155 143 331 620 604 613 739 265 239 289 229 161
3 153 129 336 550 609 596 612 251 204 256 220 152
4 137 125 322 550 597 573 716 238 172 208 202 145
5 129 112 348 547 595 566 665 200 182 181 199 141
6 121 119 358 547 564 648 550 201 224 183 209 135
7 115 116 332 506 691 636 471 202 213 176 228 126
8 110 113 346 464 766 751 516 217 184 194 208 123
9 104 137 434 505 706 847 824 364 170 300 185 120
10 98 179 484 465 675 781 731 455 154 316 175 115
11 100 160 543 446 584 846 717 668 178 345 171 115
12 99 133 664 478 662 995 629 484 192 319 168 128
13 92 132 762 476 765 921 506 289 200 249 178 180
14 95 141 913 459 715 978 506 205 218 247 182 256
15 90 153 770 489 578 1,070 458 245 187 251 170 292
16 91 161 637 499 527 920 403 391 160 227 177 228
17 114 155 580 518 545 1,060 475 532 179 197 218 184
18 144 211 597 568 568 1,050 526 304 176 208 207 160
19 144 349 743 513 541 1,060 432 276 158 201 186 148
20 131 413 802 514 548 858 426 310 245 175 181 137
21 127 374 658 558 612 830 391 319 250 167 198 137
22 115 293 579 569 659 889 340 295 224 192 188 138
23 99 316 598 574 636 904 338 271 237 230 181 136
24 95 300 616 561 695 815 330 260 208 243 174 136
25 91 263 597 661 762 866 282 200 248 207 169 141
26 89 234 578 765 815 824 237 231 279 188 165 147
27 86 318 551 720 891 995 267 253 273 176 178 161
28 83 338 528 644 872 896 272 310 216 171 170 174
29 83 280 538 587 833 724 246 399 238 188 162 165
30 85   684 565 986 757 299 441 272 233 161 176
31 98   705   908   246 265   258   158