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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 -> 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       1,240 1,690 4,450 2,660 346 360 887 834  
2       1,340 1,640 4,410 2,560 335 362 951 776  
3       1,440 1,610 4,500 2,420 328 358 888 834  
4       1,430 1,690 4,620 2,300 318 370 906 833  
5       1,390 1,750 4,650 2,180 307 386 944 842  
6       1,400 1,840 4,870 2,020 299 396 1,060 819  
7       1,430 1,950 5,210 1,850 301 411 1,140 806  
8       1,430 2,080 5,680 1,700 303 411 1,170 570  
9       1,360 2,140 6,010 1,590 308 411 1,220 557  
10       1,310 2,150 5,970 1,470 308 417 1,230 765  
11       1,310 2,140 5,930 1,380 306 427 1,250 625  
12       1,350 1,990 5,640 1,300 308 420 1,270 722  
13       1,470 1,960 5,370 1,250 300 412 1,300 776  
14       1,720 2,070 5,040 1,210 294 412 1,340 872  
15       1,730 2,180 4,820 1,190 289 424 1,130 854  
16       1,650 2,400 4,940 1,130 286 452 1,140 873  
17       1,760 2,760 4,710 1,070 286 472 1,190 591  
18       2,170 2,950 4,970 983 274 489 1,200    
19       2,550 2,990 4,980 880 257 511 1,240    
20       2,390 3,180 4,780 775 255 526 1,310    
21       1,810 3,460 4,060 689 266 545 1,310    
22       1,790 3,560 3,910 623 285 577 1,280    
23       1,850 3,640 3,840 584 304 603 1,270    
24       1,880 3,900 3,840 552 327 619 1,250    
25       1,860 4,450 3,740 508 340 634 1,270    
26       1,850 5,030 3,580 469 339 653 1,310    
27       1,800 5,120 3,460 436 341 665 1,330    
28       1,710 5,170 3,430 421 340 674 1,350    
29       1,660 5,140 3,270 407 342 684 1,330    
30       1,640 5,180 3,200 383 343 724 1,310    
31         5,180   361 354   1,300