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USGS Daily Statistics for the Nation

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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 -> 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
1 213 130 243 310 186 151 110 28 24 45 78 166
2 186 129 224 272 194 179 82 31 24 58 82 166
3 144 117 225 275 212 215 104 32 28 70 77 143
4 153 100 235 273 198 201 103 28 77 74 60 115
5 186 119 250 254 174 144 114 26 72 74 54 110
6 188 146 241 248 181 119 78 30 55 71 54 113
7 140 130 212 228 160 99 58 34 36 53 50 109
8 120 128 233 222 123 85 61 31 30 38 39 94
9 135 125 237 234 104 91 93 27 25 45 37 100
10 129 140 269 266 122 85 106 28 40 40 47 101
11 113 138 312 266 143 99 85 39 41 30 66 100
12 134 132 288 302 156 124 75 30 32 29 69 139
13 181 117 301 243 175 136 67 29 30 38 79 149
14 160 109 363 229 206 141 71 20 27 34 80 116
15 142 111 345 249 197 120 82 20 27 52 69 123
16 129 128 312 208 190 89 86 24 22 79 70 136
17 113 181 293 173 182 82 61 28 26 92 84 123
18 131 241 284 134 185 95 44 32 21 77 70 109
19 127 241 263 130 201 110 39 51 27 50 74 95
20 108 252 290 187 185 127 49 66 45 46 87 88
21 95 240 295 247 137 119 45 62 46 45 82 95
22 106 257 306 216 115 149 45 51 57 43 82 96
23 117 286 262 219 100 133 52 36 74 42 100 113
24 138 289 237 239 89 96 48 40 69 47 135 130
25 133 233 247 223 98 90 52 48 58 61 123 147
26 122 189 232 216 143 133 56 56 48 81 101 157
27 111 186 209 226 155 142 66 55 43 105 110 146
28 104 252 241 196 141 137 62 48 37 118 118 157
29 101 240 285 174 133 128 64 36 29 102 165 181
30 113   268 162 115 115 49 25 32 93 165 211
31 122   284   135   38 24   78   209