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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 05470000 South Skunk River near Ames, IA


Story County, Iowa
Hydrologic Unit Code 07080105
Latitude  42°03'59.7", Longitude  93°37'12.9" NAD83
Drainage area 315  square miles
Gage datum 888.73 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 1920-10-01 -> 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 79 68 197 388 315 392 395 148 102 125 139 94
2 75 69 182 333 315 389 343 135 93 137 130 91
3 71 66 207 309 319 349 320 114 98 133 116 87
4 66 72 234 312 324 344 327 105 82 127 110 83
5 66 101 250 304 324 322 288 95 80 116 112 85
6 73 98 259 312 304 338 253 95 100 110 118 93
7 68 71 262 286 327 315 236 100 100 106 123 86
8 59 72 240 260 340 322 236 101 107 112 114 81
9 52 83 262 269 347 399 325 149 90 141 103 76
10 49 89 281 258 329 355 228 190 74 148 101 72
11 50 84 310 261 290 389 240 228 83 159 101 70
12 47 68 340 304 302 441 241 181 87 166 114 75
13 45 74 409 316 326 518 209 124 92 144 106 91
14 49 98 462 302 335 488 198 104 113 129 104 116
15 48 135 423 309 285 489 195 81 100 133 99 131
16 55 141 396 309 298 467 181 112 101 122 100 106
17 59 127 364 303 291 462 220 103 114 110 109 88
18 71 132 367 298 296 458 186 111 106 112 104 79
19 74 167 411 279 366 488 188 106 119 114 103 76
20 66 193 412 272 381 430 193 119 157 102 102 70
21 64 188 344 282 361 386 167 138 157 98 100 67
22 59 179 309 276 374 422 145 125 130 111 97 67
23 55 200 326 275 347 458 158 124 114 122 98 68
24 51 186 339 273 350 391 167 119 116 124 92 70
25 51 161 340 312 372 446 154 94 120 110 89 81
26 52 155 320 353 396 382 137 108 134 98 87 80
27 54 167 338 332 436 410 149 116 134 91 94 85
28 53 176 340 307 427 420 149 129 119 89 98 100
29 57 170 345 288 403 361 161 188 124 97 97 94
30 59   365 289 460 390 177 175 132 118 95 100
31 57   366   394   162 115   133   89