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USGS Surface-Water 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 -> 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 62 62 130 218 247 240 350 70 83 129 94 74
2 60 67 134 191 223 219 243 80 88 116 90 71
3 61 55 145 187 230 228 229 76 70 98 80 68
4 56 57 166 189 223 244 246 73 61 118 75 65
5 54 59 146 178 213 234 257 69 71 99 72 66
6 51 51 145 181 200 238 209 72 75 82 75 71
7 49 46 159 169 232 228 184 75 63 76 83 64
8 47 57 162 170 225 271 205 86 89 86 75 61
9 45 69 180 207 245 286 375 150 98 118 72 58
10 42 79 199 194 232 255 258 204 81 108 95 55
11 42 59 222 195 216 269 275 321 85 121 92 54
12 38 52 270 228 247 370 218 201 77 137 90 59
13 35 55 303 235 298 370 199 116 79 103 83 70
14 36 72 342 237 269 433 176 84 85 90 79 107
15 34 99 256 248 227 501 124 97 74 95 76 110
16 37 91 247 254 235 396 136 161 78 86 77 72
17 60 104 239 237 245 535 239 105 89 75 91 64
18 70 128 277 240 255 430 220 81 85 85 87 59
19 59 196 325 227 297 414 163 88 116 86 88 55
20 52 178 290 229 262 327 131 106 128 75 89 54
21 46 167 231 238 261 317 123 98 120 74 90 55
22 41 146 203 242 256 328 112 89 93 86 83 56
23 38 137 223 237 256 334 108 97 92 96 82 56
24 37 126 231 210 303 329 103 76 84 92 78 57
25 35 111 215 249 351 329 104 65 104 80 75 71
26 34 97 201 279 343 315 87 86 104 75 71 67
27 33 146 182 262 360 413 88 80 120 70 72 69
28 33 128 177 232 336 337 87 79 102 67 78 88
29 44 126 178 204 310 303 80 133 104 73 78 81
30 50   203 234 427 368 111 125 104 88 75 83
31 46   209   311   84 91   94   67