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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 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
1 213 131 245 311 188 156 113 28 24 45 80 169
2 186 131 226 271 195 184 84 30 24 59 84 169
3 145 119 229 248 214 222 107 32 29 71 78 146
4 155 101 238 241 199 208 106 28 79 75 61 117
5 188 121 252 242 174 146 117 26 73 75 54 112
6 191 149 240 246 171 118 80 30 56 73 54 115
7 142 132 212 227 143 98 59 34 37 54 50 111
8 122 131 235 223 117 85 62 31 30 38 40 96
9 138 127 239 235 102 92 95 27 26 46 37 101
10 132 142 272 267 122 87 103 28 40 40 48 102
11 115 140 315 266 143 102 83 40 41 30 67 102
12 136 134 291 304 159 128 73 30 33 29 70 141
13 184 119 305 244 178 140 67 29 31 37 81 151
14 163 111 369 231 211 144 70 21 28 34 80 119
15 144 113 350 252 201 123 82 20 27 53 70 124
16 131 130 316 210 194 92 87 24 22 81 71 137
17 115 185 295 175 186 84 61 28 26 93 85 125
18 133 245 287 136 190 96 45 32 21 79 71 111
19 129 245 266 130 207 109 39 52 27 51 75 97
20 110 257 293 189 191 127 49 68 46 47 89 90
21 97 244 300 250 139 120 45 63 47 46 84 97
22 107 262 310 218 116 152 46 51 58 43 83 98
23 119 292 266 222 100 137 53 37 75 43 101 115
24 140 294 241 243 89 98 49 41 71 48 137 133
25 136 234 251 226 100 91 53 49 59 62 125 149
26 124 188 235 219 145 135 57 57 49 83 103 160
27 113 187 213 230 158 145 67 56 43 107 112 149
28 106 254 245 199 144 141 63 48 38 120 120 159
29 103 240 290 177 136 131 65 37 29 104 168 182
30 115   270 164 117 118 49 25 33 95 168 211
31 123   285   138   39 24   79   208