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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 12087000 MASHEL RIVER NEAR LA GRANDE, WA


Pierce County, Washington
Hydrologic Unit Code 17110015
Latitude  46°51'25", Longitude 122°18'05" NAD27
Drainage area 80.7  square miles
Gage datum 619.53 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 1940-10-01 -> 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
1 414 429 301 358 247 187 97 24 22 78 246 444
2 425 416 294 345 251 175 88 24 20 56 217 454
3 421 334 312 311 251 160 81 23 21 64 205 482
4 415 358 325 293 247 147 75 22 23 73 199 447
5 477 395 313 307 250 142 69 21 25 75 194 392
6 459 537 288 316 252 148 64 21 37 57 223 363
7 571 548 293 315 231 158 57 22 27 54 310 346
8 495 529 261 319 218 158 57 22 26 64 246 375
9 406 484 321 329 220 156 68 21 24 91 191 481
10 390 383 412 313 222 164 63 20 25 104 201 428
11 405 333 365 344 216 175 56 19 27 99 208 540
12 378 334 377 337 210 160 50 19 23 87 280 500
13 405 319 376 346 200 165 46 21 23 73 313 490
14 361 306 366 357 196 167 43 19 26 81 335 462
15 341 337 428 325 238 183 42 19 34 80 320 416
16 376 377 401 321 226 188 44 20 41 84 323 412
17 381 406 342 324 226 173 48 19 44 103 367 444
18 478 355 340 300 217 157 43 18 45 110 370 424
19 394 348 356 292 211 158 41 18 37 125 389 449
20 375 323 368 316 198 148 49 18 37 138 356 567
21 415 359 338 294 191 136 46 18 34 126 344 516
22 397 429 347 267 214 127 39 19 34 148 417 438
23 386 372 364 276 206 120 38 20 31 135 451 401
24 447 417 345 289 198 119 37 22 37 121 427 371
25 453 388 378 270 186 111 34 31 36 132 562 331
26 386 379 330 257 196 101 32 37 39 141 490 306
27 314 329 333 247 209 103 31 35 43 152 476 353
28 354 319 333 246 224 104 30 27 48 150 473 402
29 368 289 359 241 214 108 30 23 59 147 398 486
30 476   387 248 185 99 28 23 84 161 392 452
31 469   364   197   26 21   232   403