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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 12304500 Yaak River near Troy MT


Lincoln County, Montana
Hydrologic Unit Code 17010103
Latitude  48°33'42.20", Longitude 115°58'12.57" NAD83
Drainage area 792  square miles
Gage datum 1,839 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 62 - 63 years of record in, ft3/s   (Calculation Period 1956-10-01 -> 2019-09-30)

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
1 253 303 391 1,090 2,770 3,020 884 244 154 164 255 367
2 244 307 382 1,120 2,830 2,970 839 240 155 164 265 346
3 247 303 384 1,180 2,900 2,930 795 236 154 164 274 360
4 244 300 391 1,220 2,930 2,800 753 228 152 162 302 440
5 237 299 401 1,320 3,000 2,710 708 222 152 161 297 417
6 234 301 416 1,430 3,120 2,620 673 217 151 161 280 351
7 242 321 431 1,550 3,210 2,500 644 212 150 159 299 319
8 273 345 449 1,550 3,270 2,410 613 207 145 160 297 293
9 269 410 445 1,600 3,310 2,320 586 201 145 168 296 322
10 283 377 468 1,640 3,370 2,180 568 195 142 170 294 323
11 272 348 503 1,650 3,380 2,060 544 190 143 175 307 335
12 265 331 531 1,700 3,390 2,000 514 188 144 183 319 326
13 271 325 562 1,740 3,430 1,950 502 185 143 184 325 328
14 270 323 571 1,820 3,470 1,890 499 181 144 188 318 328
15 308 326 615 1,840 3,560 1,840 477 181 153 196 316 323
16 420 337 722 1,820 3,710 1,810 448 182 159 196 312 334
17 426 342 734 1,810 3,770 1,780 425 177 151 194 302 324
18 367 341 712 1,870 3,770 1,700 409 174 159 188 298 312
19 336 351 744 1,910 3,700 1,580 394 169 162 185 286 301
20 318 380 750 2,020 3,650 1,500 378 167 162 184 295 291
21 298 406 731 2,150 3,650 1,430 363 166 166 195 311 280
22 289 404 717 2,210 3,690 1,380 347 165 165 202 315 275
23 284 413 744 2,320 3,690 1,310 334 165 163 211 317 270
24 280 389 780 2,550 3,590 1,230 321 168 161 207 372 260
25 280 390 831 2,610 3,520 1,170 313 167 158 223 450 254
26 273 392 861 2,550 3,460 1,110 308 165 157 226 400 274
27 271 385 872 2,520 3,420 1,080 299 161 157 230 359 307
28 272 382 891 2,570 3,330 1,020 285 158 157 237 327 289
29 274 442 920 2,620 3,200 974 272 156 158 227 350 262
30 283   984 2,680 3,180 945 263 153 159 221 381 257
31 297   1,050   3,110   254 152   242   253