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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 12456500 CHIWAWA RIVER NEAR PLAIN, WA


Chelan County, Washington
Hydrologic Unit Code 17020011
Latitude  47°50'15", Longitude 120°39'40" NAD27
Drainage area 170  square miles
Gage datum 2,097.25 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 1910-10-01 -> 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
1 165 174 161 344 1,030 1,870 1,180 404 174 141 226 272
2 159 172 162 362 1,050 1,860 1,150 386 168 135 214 253
3 161 167 162 375 1,120 1,890 1,110 369 166 141 206 239
4 158 165 161 384 1,160 1,850 1,060 362 182 147 235 226
5 157 165 161 392 1,210 1,840 1,000 356 170 146 252 228
6 161 165 161 397 1,250 1,810 982 347 162 135 259 231
7 169 171 161 411 1,290 1,770 969 339 158 134 303 213
8 185 179 162 438 1,350 1,720 953 324 155 138 282 207
9 178 188 167 473 1,390 1,660 948 309 152 145 256 219
10 169 185 173 497 1,410 1,630 934 296 148 148 245 218
11 165 177 177 512 1,430 1,600 909 287 147 156 228 224
12 162 172 193 519 1,500 1,580 884 276 143 149 264 209
13 164 170 201 536 1,560 1,580 855 265 139 144 299 209
14 164 168 207 565 1,600 1,550 835 256 139 147 303 202
15 168 170 221 573 1,650 1,510 802 253 142 151 304 194
16 167 172 227 587 1,750 1,480 761 242 147 158 284 194
17 170 172 227 609 1,830 1,470 725 232 148 180 265 186
18 172 175 229 637 1,850 1,440 692 227 150 181 264 186
19 184 176 239 674 1,830 1,400 673 221 147 187 261 180
20 181 174 248 726 1,800 1,380 655 216 143 199 252 177
21 176 172 249 765 1,770 1,390 642 211 141 237 227 175
22 170 174 253 794 1,760 1,400 618 206 136 200 225 172
23 168 174 259 823 1,770 1,390 598 202 133 190 251 167
24 171 168 269 858 1,820 1,340 577 198 136 185 250 164
25 172 165 285 862 1,870 1,300 553 194 134 216 251 164
26 173 163 289 873 1,870 1,270 531 190 136 211 251 164
27 170 160 296 900 1,840 1,250 508 185 142 199 257 161
28 167 160 300 929 1,850 1,250 485 179 135 203 272 161
29 167 183 299 963 1,860 1,260 467 176 138 219 319 165
30 166   307 1,000 1,840 1,230 446 177 139 205 335 171
31 168   327   1,850   425 171   236   169