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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 05470500 Ioway Creek at Ames, IA


Story County, Iowa
Hydrologic Unit Code 07080105
Latitude  42°01'21.2", Longitude  93°37'49.8" NAD83
Drainage area 204  square miles
Gage datum 880.48 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 1919-10-01 -> 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 62 61 127 216 248 238 345 72 82 127 93 73
2 59 67 131 190 227 218 241 81 87 114 89 70
3 60 55 142 186 235 227 230 77 69 96 80 67
4 56 56 162 187 228 243 245 73 60 116 74 64
5 54 59 145 177 219 233 256 69 70 98 71 65
6 51 51 143 179 202 236 214 72 73 81 74 70
7 49 46 158 168 245 226 188 74 62 74 82 64
8 47 57 161 169 234 268 206 86 88 84 74 60
9 45 68 180 204 263 283 370 148 96 116 71 57
10 42 78 199 191 241 252 256 201 80 106 94 54
11 42 58 221 192 220 265 280 317 84 120 91 53
12 37 51 266 224 248 363 224 198 76 135 89 58
13 35 54 298 231 297 363 201 114 78 102 82 69
14 36 71 336 233 267 424 176 83 84 89 78 106
15 33 96 252 243 225 490 125 96 73 93 75 109
16 36 89 243 250 234 388 138 159 77 85 76 71
17 59 101 235 234 243 523 238 104 88 74 90 63
18 69 125 271 237 252 422 218 80 84 84 87 58
19 58 191 318 225 293 413 166 87 115 84 88 54
20 51 174 284 227 269 327 149 105 127 74 88 53
21 46 163 228 235 281 315 140 97 118 73 89 54
22 40 142 200 240 278 324 120 88 92 85 82 56
23 38 133 220 238 265 329 107 96 90 95 81 55
24 36 123 228 220 308 324 102 75 83 90 77 57
25 35 108 215 262 352 326 103 64 102 79 75 70
26 33 95 204 289 343 316 86 85 103 74 71 66
27 33 143 184 267 358 423 87 79 118 69 72 69
28 33 125 177 235 333 341 86 77 100 66 78 87
29 44 120 178 207 308 303 85 131 103 72 77 80
30 49   202 236 420 365 117 124 102 87 74 82
31 46   207   307   87 90   93   67