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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 05455100 Old Mans Creek near Iowa City, IA


Johnson County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°36'23.06", Longitude  91°36'56.6" NAD83
Drainage area 201  square miles
Gage datum 637.32 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 1950-10-01 -> 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 65 55 134 283 223 238 291 102 80 54 111 79
2 58 58 159 212 181 204 272 67 77 60 104 77
3 56 74 194 171 204 208 172 82 67 69 99 66
4 82 97 233 153 246 203 124 99 62 56 104 62
5 56 103 272 149 274 218 199 86 87 94 97 59
6 58 97 188 155 194 207 313 73 112 145 78 58
7 73 99 166 153 220 173 215 57 97 144 69 56
8 76 93 241 144 235 199 180 49 77 142 63 54
9 57 108 329 158 210 228 185 66 79 105 60 53
10 50 118 437 160 307 250 188 119 108 116 74 51
11 49 107 426 190 347 205 193 97 93 78 64 50
12 62 88 352 174 254 214 139 110 79 55 64 54
13 95 81 395 162 246 274 141 117 101 53 74 53
14 104 80 363 163 220 282 237 124 111 58 73 85
15 73 80 297 167 184 289 158 109 100 59 68 98
16 76 86 217 159 194 242 133 116 63 49 102 92
17 75 113 174 180 277 271 103 138 60 72 107 68
18 63 129 188 325 292 245 103 119 55 147 114 60
19 72 138 248 294 269 243 128 81 53 108 82 55
20 94 232 339 262 237 283 130 112 55 69 89 55
21 67 258 301 242 201 278 123 181 47 57 80 57
22 61 186 268 179 178 268 136 127 48 59 88 60
23 60 187 252 181 199 294 119 103 72 97 90 63
24 82 178 216 166 225 320 140 93 78 87 78 59
25 71 213 185 194 270 276 135 104 100 79 77 84
26 55 183 185 225 284 189 125 126 121 83 83 86
27 51 178 182 229 297 169 128 142 125 75 102 89
28 48 143 194 213 308 171 100 194 62 71 92 122
29 54 102 193 210 450 144 103 198 56 80 78 101
30 64   239 217 348 235 108 124 62 125 73 78
31 62   318   263   133 72   111   78