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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 06018500 Beaverhead River near Twin Bridges MT


Madison County, Montana
Hydrologic Unit Code 10020002
Latitude  45°23'00.20", Longitude 112°27'10.19" NAD83
Drainage area 3,618  square miles
Gage datum 4,809.15 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 1934-10-01 -> 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
1 387 370 396 465 331 268 319 171 295 373 466 477
2 382 375 395 463 328 266 302 170 298 370 472 481
3 380 378 396 458 321 273 294 176 299 368 478 481
4 379 376 396 454 312 288 296 177 297 371 485 478
5 377 380 398 457 307 296 297 180 305 373 486 472
6 379 383 402 464 298 303 285 184 309 372 490 462
7 379 386 407 460 289 311 271 184 314 370 491 461
8 381 387 407 457 286 319 259 185 317 373 495 453
9 380 380 408 451 282 337 251 190 317 373 496 447
10 376 378 408 444 278 356 251 194 319 374 497 449
11 369 381 405 439 271 357 247 194 328 374 497 444
12 368 388 409 435 272 365 252 203 330 377 496 443
13 369 385 411 433 267 350 247 202 333 377 494 437
14 373 383 411 428 263 349 243 201 337 375 495 430
15 374 380 412 431 253 348 238 202 340 383 494 430
16 373 380 418 428 247 352 234 204 339 394 493 426
17 376 382 426 422 250 363 226 202 338 399 496 424
18 374 385 431 415 243 358 224 202 342 399 499 423
19 371 389 440 408 230 351 219 204 352 403 499 422
20 369 389 447 404 231 333 212 210 361 411 501 423
21 371 393 446 398 236 328 205 215 363 416 503 426
22 368 396 447 390 247 328 203 220 359 418 498 425
23 372 396 452 385 249 322 200 231 362 424 493 423
24 373 395 463 376 256 318 191 241 364 435 492 413
25 370 393 468 366 257 318 187 249 363 441 497 409
26 369 393 470 360 255 318 181 256 364 445 491 404
27 368 391 475 351 253 323 176 260 363 445 487 401
28 368 395 470 342 249 326 170 263 368 448 483 401
29 366 427 467 335 257 324 169 264 371 450 478 397
30 367   461 333 268 324 169 274 373 454 475 393
31 368   461   270   169 287   460   391