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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 12148300 SF TOLT RIVER BL REGULATING BASIN NR CARNATION, WA


King County, Washington
Hydrologic Unit Code 17110010
Latitude  47°41'49", Longitude 121°47'10" NAD27
Drainage area 29.6  square miles
Gage datum 670 feet above NGVD29
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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 1981-10-01 -> 2021-09-30)

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
1 211 290 183 167 174 156 97 71 70 74 111 206
2 210 251 190 172 171 151 95 71 71 74 118 201
3 215 238 192 163 168 149 95 71 70 74 117 215
4 234 249 189 160 164 149 93 70 70 74 119 235
5 256 245 198 178 165 144 92 70 69 73 123 233
6 251 237 197 191 162 143 92 70 70 73 140 220
7 287 233 187 190 161 161 88 70 70 76 157 213
8 357 235 160 193 158 166 86 70 71 78 157 222
9 312 241 170 191 157 151 97 70 72 75 170 227
10 314 206 162 179 158 145 96 69 72 79 179 209
11 302 188 161 172 169 145 91 70 72 79 178 199
12 293 183 165 156 164 143 86 69 71 78 173 210
13 284 187 162 150 175 146 88 70 73 78 192 219
14 287 214 165 163 187 141 87 69 79 79 219 221
15 296 213 176 169 176 147 85 69 73 80 211 218
16 307 216 173 171 168 132 82 69 73 88 214 219
17 338 198 163 170 158 121 80 69 74 86 227 194
18 339 181 162 164 151 119 77 69 74 86 209 199
19 306 190 175 154 152 116 75 69 76 88 191 200
20 297 193 181 152 160 106 75 70 74 94 186 190
21 279 185 169 152 159 105 75 69 74 101 175 176
22 234 190 156 150 157 105 74 70 73 100 177 173
23 227 180 157 153 160 108 74 69 73 97 183 172
24 243 174 205 170 151 115 75 70 74 97 250 177
25 276 172 201 175 146 115 73 70 76 100 235 171
26 281 171 179 175 155 110 73 69 75 103 206 173
27 260 177 165 180 150 102 72 70 76 101 204 182
28 231 177 145 186 149 93 73 69 75 107 215 178
29 236 199 148 183 157 96 72 69 75 106 229 185
30 248   162 182 159 98 72 70 77 106 227 196
31 270   164   156   71 70   111   209