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USGS Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated June 11, 2020 - USGS water-resources monitoring activities will be restored at the following sites:
  • 12323600 Silver Bow Creek at Opportunity, Montana (POR: 31 years)
  • 12323750 Silver Bow Creek at Warm Springs, Montana (POR: 35 years)

Updated May 12, 2020 - USGS water-resources monitoring activities were suspended effective June 1, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site was funded by our partner and USGS Cooperative Matching Funds (06088500). Lack of partner funding for this site resulted in suspension of all USGS monitoring activities. Efforts are ongoing to secure funding for future monitoring. Historical data will continue to be available from USGS.

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 06017000 Beaverhead River at Dillon MT


Beaverhead County, Montana
Hydrologic Unit Code 10020002
Latitude  45°13'06.18", Longitude 112°39'19.20" NAD83
Drainage area 2,892  square miles
Gage datum 5,100 feet above NAVD88
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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 1950-10-01 -> 2020-09-30)

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
1 379 367 281 304 254 250 280 205 242 231 370 445
2 377 365 279 288 248 248 276 202 243 231 373 442
3 378 362 276 277 252 241 263 206 232 228 374 439
4 375 362 275 278 253 232 261 210 219 225 383 431
5 372 372 276 294 257 220 254 202 219 224 390 421
6 368 372 276 298 262 220 243 216 231 211 420 417
7 369 375 280 302 252 235 236 216 234 219 431 419
8 362 374 281 302 241 260 226 213 232 219 444 410
9 359 369 282 296 239 279 221 212 233 220 444 409
10 361 372 275 297 239 305 215 208 230 223 442 412
11 362 396 275 304 226 301 211 207 235 225 444 415
12 362 414 289 300 217 301 209 205 232 227 443 417
13 361 398 293 289 211 305 203 206 230 227 440 415
14 364 381 294 281 210 305 200 203 235 235 434 416
15 363 379 303 274 211 302 199 207 240 236 436 419
16 362 378 298 270 219 296 200 208 238 239 440 416
17 362 373 295 269 218 301 195 208 239 237 440 413
18 360 369 273 262 217 289 188 207 242 234 446 412
19 359 369 284 265 212 282 185 215 241 243 457 407
20 362 372 296 279 214 284 190 213 247 250 462 406
21 360 374 294 275 229 283 189 214 248 255 468 403
22 360 359 318 263 233 278 198 213 245 252 457 397
23 364 359 319 260 228 274 209 219 244 260 451 392
24 365 359 308 258 234 272 205 223 245 273 455 389
25 364 358 305 262 235 274 206 227 241 275 456 389
26 368 357 314 254 228 277 207 229 240 272 449 387
27 366 347 309 255 223 294 205 231 237 267 448 391
28 358 344 303 252 220 299 209 229 238 274 447 393
29 353 369 311 252 235 293 207 231 239 278 445 395
30 355   315 253 245 284 210 231 217 277 445 387
31 357   336   248   204 236   279   383