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USGS Daily Statistics for Washington

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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 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 -> 2020-09-30)

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
1 206 290 183 167 174 156 97 71 70 74 112 209
2 204 251 190 172 171 151 95 71 71 73 119 204
3 208 238 192 163 168 149 95 71 70 74 117 218
4 227 249 189 160 164 149 94 70 70 74 119 239
5 247 245 198 178 165 144 92 70 69 73 123 236
6 240 237 197 191 162 143 92 70 70 73 141 223
7 280 233 187 190 161 161 88 70 70 77 158 216
8 339 235 160 193 158 168 86 70 71 78 158 225
9 290 241 170 191 157 151 98 69 72 75 172 229
10 294 206 162 179 158 144 97 69 72 78 181 212
11 284 188 161 172 169 144 92 69 72 79 179 201
12 288 183 165 156 164 141 86 69 71 76 174 212
13 282 187 162 150 175 143 88 70 73 77 191 221
14 282 214 165 163 187 139 87 69 79 78 204 222
15 281 213 176 169 176 145 85 69 73 80 194 219
16 295 216 173 171 168 130 82 69 73 87 198 217
17 328 198 163 170 158 121 80 69 74 84 211 191
18 329 181 162 164 151 119 77 69 74 84 201 195
19 294 190 175 154 152 117 75 68 76 86 185 193
20 285 193 181 152 160 106 75 70 74 93 180 185
21 268 185 169 152 159 105 75 69 74 100 170 170
22 233 190 156 150 157 105 74 70 73 100 172 167
23 229 180 157 153 160 108 74 69 72 96 179 167
24 246 174 205 170 151 116 75 70 74 97 251 173
25 280 172 201 175 146 115 73 70 75 100 237 167
26 281 171 179 175 155 111 73 69 74 103 208 169
27 260 177 165 180 150 103 72 70 75 101 206 179
28 231 177 145 186 149 93 72 69 75 108 217 175
29 236 199 148 183 157 96 72 69 75 107 232 182
30 248   162 182 159 98 71 70 77 107 230 192
31 270   164   156   71 70   111   204