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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 04177000 Ottawa River at University of Toledo, Toledo OH


Lucas County, Ohio
Hydrologic Unit Code 04100001
Latitude  41°39'34.85", Longitude  83°36'45.17" NAD83
Drainage area 150  square miles
Contributing drainage area 150  square miles
Gage datum 575.31 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 1944-10-01 -> 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
1 213 131 245 311 188 154 112 28 24 45 80 169
2 186 131 226 271 195 181 83 31 24 59 84 169
3 145 119 229 248 214 219 105 32 28 71 78 146
4 155 101 238 241 199 204 105 28 77 75 61 117
5 188 121 252 242 174 144 116 26 72 75 54 112
6 191 149 240 246 170 116 79 30 55 73 54 115
7 142 132 212 227 142 97 58 34 36 54 50 111
8 122 131 235 223 116 84 61 31 30 38 40 96
9 138 127 239 235 101 91 93 27 25 46 37 101
10 132 142 272 267 121 86 106 28 40 40 48 102
11 115 140 315 266 143 100 85 39 41 30 67 102
12 136 134 291 304 157 126 75 30 33 29 70 141
13 184 119 305 244 176 137 67 29 31 37 81 151
14 163 111 369 231 208 141 71 20 28 34 80 119
15 144 113 350 252 198 121 82 20 27 53 70 124
16 131 130 316 210 191 90 86 24 22 81 71 137
17 115 185 295 175 184 82 61 28 26 93 85 125
18 133 245 287 136 188 94 44 32 21 79 71 111
19 129 245 266 130 204 108 39 51 27 51 75 97
20 110 257 293 189 188 125 49 66 46 47 89 90
21 97 244 300 250 137 118 45 62 47 46 84 97
22 107 262 310 218 115 150 45 51 58 43 83 98
23 119 292 266 222 99 135 52 36 75 43 101 115
24 140 294 241 243 88 97 48 40 71 48 137 133
25 136 234 251 226 98 91 52 48 59 62 125 149
26 124 188 235 219 144 135 56 56 49 83 103 160
27 113 187 213 230 157 144 66 55 43 107 112 149
28 106 254 245 199 143 139 62 48 38 120 120 159
29 103 240 290 177 135 130 64 36 29 104 168 182
30 115   270 164 116 117 49 25 33 95 168 211
31 123   285   137   38 24   79   208