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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 12121600 ISSAQUAH CREEK NEAR MOUTH NEAR ISSAQUAH, WA


King County, Washington
Hydrologic Unit Code 17110012
Latitude  47°33'09", Longitude 122°02'48" NAD27
Drainage area 56.6  square miles
Contributing drainage area 56.60  square miles
Gage datum 42.84 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 1963-10-01 -> 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
1 226 261 225 167 122 87 53 30 32 40 98 225
2 224 230 206 176 117 92 53 30 34 40 99 232
3 225 208 211 171 116 89 55 30 31 39 99 267
4 225 204 208 168 112 87 53 29 30 37 131 262
5 265 213 216 186 116 83 51 29 29 36 117 232
6 290 237 209 183 114 81 49 29 33 42 129 229
7 324 225 195 175 111 88 47 29 30 41 157 213
8 300 232 181 174 103 85 47 29 31 41 134 212
9 303 233 192 173 100 85 48 28 30 44 121 218
10 276 213 212 166 98 88 48 28 30 47 131 219
11 265 201 210 172 95 87 49 28 31 47 139 224
12 280 207 212 167 92 85 47 28 29 43 163 237
13 277 207 215 166 94 82 50 28 28 44 170 254
14 285 208 211 173 93 77 46 28 29 46 193 255
15 282 208 218 166 97 73 43 29 29 47 172 254
16 276 226 220 161 99 76 42 29 29 48 156 245
17 268 230 210 155 96 75 41 28 35 51 154 235
18 278 229 206 145 92 80 40 29 39 52 151 226
19 281 258 207 149 89 71 39 28 38 57 159 215
20 277 254 201 158 89 67 38 29 38 69 164 237
21 278 227 186 147 88 69 37 28 38 77 164 239
22 246 220 182 137 91 64 36 29 38 78 168 230
23 245 209 183 140 87 65 36 30 45 67 185 220
24 263 207 183 144 83 74 35 34 40 62 237 225
25 288 197 182 137 83 69 34 32 38 68 230 228
26 256 186 182 129 82 62 34 32 36 78 224 244
27 250 199 177 126 85 59 33 31 35 81 208 247
28 256 233 172 127 93 60 32 30 38 85 207 238
29 270 260 176 124 96 59 31 31 39 95 217 237
30 280   181 127 91 55 31 33 43 91 226 249
31 257   174   87   30 31   96   219