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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 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 646.84 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 1981-10-01 -> 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
1 208 280 201 164 170 156 96 72 70 75 110 202
2 207 243 207 169 167 151 94 72 71 74 117 196
3 211 233 214 160 165 150 94 72 70 74 116 208
4 228 243 209 158 161 149 93 71 70 74 123 227
5 246 244 210 174 162 145 92 71 70 73 125 230
6 245 236 208 186 160 145 91 71 70 73 139 219
7 282 232 198 185 160 161 88 71 70 76 155 217
8 344 233 168 188 157 165 86 71 71 77 154 230
9 303 237 174 186 155 151 96 70 72 74 166 230
10 303 204 164 176 156 148 95 70 72 78 174 212
11 293 187 161 169 166 150 91 70 72 79 176 200
12 293 182 165 154 161 147 86 70 71 77 175 209
13 288 185 162 148 171 151 88 70 73 78 191 215
14 287 207 164 160 182 149 87 70 78 79 216 216
15 292 206 174 165 172 154 85 70 73 80 208 214
16 300 210 171 167 166 136 82 70 73 87 209 214
17 327 192 161 166 157 125 80 70 74 85 222 191
18 329 177 159 160 150 122 77 70 74 85 205 195
19 298 185 171 151 151 119 76 69 76 87 188 196
20 298 191 177 149 158 110 75 71 75 93 182 187
21 286 184 167 150 157 108 75 70 74 99 173 175
22 240 192 155 148 155 107 75 71 73 99 175 173
23 229 182 156 150 158 108 74 70 73 95 181 172
24 241 173 200 168 150 114 75 71 74 96 243 177
25 270 172 197 172 145 113 73 70 75 99 229 173
26 271 177 175 172 153 109 73 70 74 101 204 175
27 255 185 162 176 150 101 73 70 76 99 202 184
28 235 192 144 181 150 93 73 70 76 109 212 181
29 242 199 146 179 157 95 73 70 76 110 225 185
30 253   159 178 160 97 72 70 78 107 223 194
31 269   161   156   72 70   111   207