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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 06027600 Jefferson River at Parsons Bdg nr Silver Star, MT


Madison County, Montana
Hydrologic Unit Code 10020005
Latitude  45°44'51.01", Longitude 112°11'14.02" NAD83
Drainage area 7,759  square miles
Gage datum 4,420 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 2005-10-01 -> 2023-09-30)

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       1,240 1,690 4,450 2,770 360 374 887 834  
2       1,340 1,640 4,410 2,650 349 376 951 776  
3       1,440 1,610 4,500 2,500 343 372 888 834  
4       1,430 1,690 4,620 2,390 332 383 906 833  
5       1,390 1,750 4,650 2,260 320 400 944 842  
6       1,400 1,840 4,870 2,100 311 411 1,060 819  
7       1,430 1,950 5,210 1,920 314 426 1,140 806  
8       1,430 2,080 5,680 1,770 316 425 1,170 570  
9       1,360 2,140 6,010 1,660 321 424 1,220 557  
10       1,310 2,150 5,970 1,540 322 431 1,230 765  
11       1,310 2,140 5,930 1,440 319 441 1,250 625  
12       1,350 1,990 5,640 1,360 320 432 1,270 722  
13       1,470 1,960 5,370 1,310 311 422 1,300 776  
14       1,720 2,070 5,040 1,260 303 421 1,340 872  
15       1,730 2,180 4,820 1,240 298 435 1,130 854  
16       1,650 2,400 4,940 1,190 295 464 1,140 873  
17       1,760 2,760 4,710 1,120 295 486 1,190 591  
18       2,170 2,950 4,970 1,030 281 501 1,200    
19       2,550 2,990 4,980 922 263 518 1,240    
20       2,390 3,180 4,780 811 261 533 1,310    
21       1,810 3,460 4,060 722 272 554 1,310    
22       1,790 3,560 3,910 652 291 587 1,280    
23       1,850 3,640 3,840 611 312 614 1,270    
24       1,880 3,900 3,840 577 336 632 1,250    
25       1,860 4,450 3,740 531 349 650 1,270    
26       1,850 5,030 3,580 490 349 671 1,310    
27       1,800 5,120 3,460 455 351 684 1,330    
28       1,710 5,170 3,430 439 351 695 1,350    
29       1,660 5,140 3,270 424 354 705 1,330    
30       1,640 5,180 3,200 398 356 748 1,310    
31         5,180   375 367   1,300