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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 12344000 Bitterroot River near Darby MT


Ravalli County, Montana
Hydrologic Unit Code 17010205
Latitude  45°58'19.38", Longitude 114°08'28.44" NAD83
Drainage area 1,050  square miles
Gage datum 3,942.14 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 1936-10-01 -> 2024-09-30)

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
1 241 264 283 551 1,660 3,830 1,750 512 390 325 331 296
2 240 263 287 574 1,700 3,790 1,660 502 385 328 333 308
3 242 259 292 585 1,790 3,870 1,610 491 380 329 332 309
4 240 257 292 600 1,900 3,880 1,550 480 374 327 331 298
5 246 257 292 627 1,990 3,870 1,480 472 371 323 333 280
6 251 252 300 658 2,070 3,870 1,400 465 377 322 329 276
7 255 259 299 691 2,180 3,790 1,340 459 379 323 358 273
8 259 271 302 725 2,280 3,670 1,270 447 380 320 363 268
9 254 278 305 749 2,350 3,540 1,200 438 378 325 331 266
10 249 277 320 768 2,430 3,410 1,160 435 368 326 325 274
11 248 273 324 786 2,520 3,290 1,110 433 361 328 318 278
12 245 270 325 811 2,570 3,220 1,050 434 356 339 311 280
13 249 267 335 837 2,650 3,240 998 432 359 341 319 285
14 251 266 340 883 2,760 3,150 953 431 353 341 310 285
15 252 263 346 928 2,880 3,080 898 424 358 339 303 284
16 252 266 361 945 3,050 3,030 853 421 356 344 302 280
17 257 266 370 975 3,230 2,980 813 415 355 343 302 271
18 254 265 374 1,030 3,360 2,890 779 411 356 335 304 265
19 251 267 383 1,090 3,480 2,810 744 410 353 334 303 263
20 247 274 388 1,160 3,590 2,740 716 413 351 330 301 263
21 244 277 397 1,210 3,580 2,650 683 411 350 327 296 267
22 246 278 411 1,270 3,550 2,570 655 410 345 337 289 267
23 247 273 431 1,310 3,580 2,460 630 419 342 353 295 272
24 247 274 439 1,370 3,660 2,380 603 418 335 344 316 265
25 244 275 445 1,390 3,700 2,280 587 408 329 344 310 256
26 238 281 460 1,390 3,790 2,170 566 405 326 347 305 258
27 240 281 466 1,420 3,900 2,090 551 398 321 339 298 259
28 238 280 474 1,450 3,950 1,980 546 393 320 339 290 255
29 238 307 487 1,520 4,000 1,910 535 390 318 338 285 253
30 240   503 1,590 4,010 1,840 527 387 319 329 293 253
31 252   525   3,920   525 387   331   249