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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 61 - 62 years of record in, ft3/s   (Calculation Period 1956-10-01 -> 2018-09-30)

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
1 255 301 393 1,090 2,740 3,030 891 246 155 165 258 367
2 247 306 384 1,130 2,810 2,980 845 241 157 165 267 346
3 249 302 386 1,190 2,880 2,950 801 237 155 164 276 361
4 247 299 394 1,230 2,900 2,820 758 229 153 163 305 443
5 240 296 404 1,330 2,950 2,730 713 223 153 163 300 420
6 237 298 419 1,450 3,060 2,640 678 218 152 162 283 353
7 244 319 435 1,570 3,140 2,520 649 214 151 160 302 321
8 275 341 452 1,570 3,190 2,430 617 208 146 162 300 294
9 270 405 448 1,620 3,240 2,340 590 203 146 170 299 324
10 285 374 471 1,660 3,300 2,200 572 197 143 173 297 325
11 273 344 507 1,660 3,320 2,080 548 191 144 177 311 338
12 266 329 535 1,710 3,350 2,020 518 189 145 186 322 328
13 272 323 567 1,750 3,410 1,970 506 186 144 187 328 330
14 271 321 576 1,840 3,440 1,910 503 183 145 191 320 330
15 309 325 620 1,850 3,520 1,850 480 182 154 199 319 325
16 424 336 729 1,820 3,670 1,830 452 183 160 199 315 337
17 430 342 741 1,800 3,730 1,800 429 178 151 197 305 326
18 369 341 718 1,870 3,740 1,720 412 175 160 191 301 314
19 336 353 751 1,910 3,680 1,600 397 171 163 187 289 303
20 318 382 756 2,030 3,640 1,510 381 168 163 186 298 293
21 299 409 737 2,150 3,650 1,450 366 167 167 196 314 282
22 289 407 722 2,210 3,690 1,390 350 166 166 201 314 277
23 285 416 748 2,330 3,690 1,320 336 166 164 210 308 272
24 281 391 783 2,550 3,580 1,240 324 169 161 207 355 263
25 281 392 836 2,610 3,510 1,180 315 169 159 224 445 257
26 274 394 866 2,540 3,450 1,120 311 166 158 228 399 277
27 272 387 878 2,500 3,420 1,090 301 162 158 231 356 311
28 273 384 897 2,530 3,330 1,030 287 159 158 239 324 293
29 274 442 927 2,580 3,210 982 273 156 159 229 349 265
30 281   992 2,640 3,190 952 264 154 160 223 381 260
31 294   1,060   3,120   255 153   244   256