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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 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 -> 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
1 218 209 214 225 744 2,250 1,140 466 341 308 282 232
2 215 219 209 229 744 2,330 1,100 458 335 316 285 225
3 216 219 211 234 739 2,510 1,040 464 333 314 292 224
4 223 210 209 264 734 2,700 1,030 459 345 312 285 229
5 225 213 212 268 777 2,820 966 468 337 307 299 240
6 221 217 211 255 815 2,900 913 469 328 302 291 227
7 227 217 209 243 870 2,790 883 452 330 304 284 241
8 228 219 212 258 844 2,500 850 435 329 307 290 241
9 217 216 212 261 773 2,290 805 429 332 305 270 227
10 211 209 209 270 757 2,320 772 429 329 295 280 225
11 210 206 210 289 777 2,250 748 419 329 304 263 221
12 214 209 212 296 863 2,320 729 407 325 307 271 231
13 214 210 209 303 990 2,630 715 412 323 306 270 223
14 212 210 218 310 1,110 2,380 696 412 321 307 269 225
15 211 216 216 325 1,250 2,120 671 401 314 299 268 223
16 213 212 220 317 1,430 1,970 654 393 314 297 276 216
17 213 207 216 306 1,660 1,960 636 385 323 307 261 212
18 217 210 225 299 1,700 2,000 607 384 351 306 257 197
19 216 215 233 298 1,770 1,920 584 386 340 304 258 215
20 214 216 241 285 1,750 1,720 564 415 335 304 248 236
21 216 215 232 301 1,610 1,550 555 424 337 300 235 240
22 218 209 231 323 1,510 1,460 537 403 345 313 251 232
23 218 201 226 333 1,520 1,440 536 389 345 303 256 228
24 212 202 231 337 1,430 1,430 526 377 329 301 246 222
25 214 206 228 377 1,380 1,350 515 368 319 300 231 212
26 217 207 229 430 1,470 1,270 496 370 321 314 237 217
27 212 206 226 435 1,640 1,310 492 369 318 294 238 221
28 214 205 238 446 1,850 1,310 488 377 313 273 231 215
29 218 230 238 495 2,040 1,250 487 355 312 277 222 208
30 214   225 602 2,170 1,160 478 349 307 275 224 201
31 206   231   2,260   469 345   280   216