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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 06043120 Gallatin River above Deer Creek, near Big Sky, MT


Gallatin County, Montana
Hydrologic Unit Code 10020008
Latitude  45°17'50.20", Longitude 111°12'41.01" NAD83
Drainage area 537.6  square miles
Gage datum 5,875 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 2018-10-01 -> 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
1 218 209 209 230 783 2,360 1,160 478 353 313 285 238
2 215 219 206 230 785 2,420 1,110 472 345 322 290 235
3 216 219 212 226 786 2,580 1,070 480 342 321 295 224
4 223 210 214 245 785 2,710 1,070 474 356 318 289 229
5 225 213 212 243 830 2,850 1,000 475 348 313 306 240
6 221 217 212 236 864 2,890 945 484 339 308 299 227
7 227 217 210 234 939 2,730 915 467 341 310 297 229
8 228 219 216 257 910 2,390 882 449 340 314 295 241
9 217 216 213 262 829 2,160 834 441 345 312 271 227
10 211 209 207 274 802 2,100 798 441 341 299 281 225
11 210 206 207 294 801 2,110 775 424 341 311 261 221
12 214 209 209 292 861 2,240 756 414 333 315 270 231
13 214 210 206 272 950 2,670 741 415 327 313 274 223
14 212 210 219 265 1,050 2,400 724 415 328 315 271 225
15 211 216 219 261 1,220 2,110 696 406 321 306 274 223
16 213 212 219 251 1,400 2,000 681 398 322 303 276 216
17 213 207 208 254 1,630 2,020 661 393 326 309 263 212
18 217 210 218 268 1,690 2,100 627 393 320 309 256 197
19 216 215 223 274 1,810 2,030 601 397 321 309 270 215
20 214 216 229 264 1,810 1,810 581 432 329 308 258 236
21 216 210 219 280 1,680 1,620 572 444 337 304 232 240
22 218 203 226 301 1,580 1,520 554 419 349 320 246 232
23 218 194 220 310 1,590 1,480 552 402 351 308 252 228
24 212 198 227 307 1,500 1,470 543 386 332 304 243 222
25 214 198 230 319 1,450 1,390 531 379 322 306 231 212
26 217 202 229 352 1,560 1,300 508 382 326 322 235 217
27 212 206 227 374 1,750 1,320 497 381 323 299 235 221
28 214 206 241 382 1,960 1,340 494 393 318 273 230 215
29 218 234 242 445 2,090 1,300 495 367 317 277 221 208
30 214   228 592 2,220 1,210 489 361 312 280 223 201
31 206   233   2,380   476 357   287   216