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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 12323600 Silver Bow Creek at Opportunity MT


Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'27.93", Longitude 112°48'19.02" NAD83
Drainage area 343  square miles
Gage datum 4,912 feet above NGVD29
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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 1987-10-01 -> 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 38 35 38 57 84 138 71 30 28 35 38 37
2 38 37 39 59 82 134 66 30 27 35 38 36
3 37 36 41 59 82 131 66 28 27 36 39 35
4 36 35 41 61 84 135 62 28 27 37 39 35
5 35 36 41 65 85 136 59 28 29 37 38 35
6 35 36 42 71 90 142 60 28 30 37 38 34
7 34 40 44 69 94 144 56 28 30 37 39 34
8 33 43 47 72 96 142 53 28 31 36 40 34
9 33 57 50 77 97 139 51 28 31 37 40 33
10 33 70 62 73 99 137 51 27 31 36 39 34
11 32 81 64 69 102 134 51 30 31 37 38 34
12 33 67 62 68 103 130 49 27 31 38 38 35
13 33 44 68 68 106 133 49 27 31 38 38 35
14 33 36 66 70 107 128 47 26 32 38 39 34
15 33 37 58 69 108 124 45 26 32 39 39 34
16 33 37 59 67 112 130 43 26 33 38 39 34
17 33 38 58 68 125 130 44 26 32 39 39 34
18 34 38 55 69 131 128 42 26 34 38 39 34
19 34 41 56 71 131 125 40 26 33 39 39 34
20 33 50 61 73 125 118 39 25 33 40 39 34
21 33 46 62 76 124 109 36 26 32 39 38 33
22 32 40 62 79 123 106 36 27 32 39 38 33
23 33 37 67 84 128 100 35 30 33 39 37 33
24 32 37 64 86 137 94 34 29 33 39 37 33
25 33 37 57 85 145 88 33 27 34 39 37 32
26 35 37 60 84 140 84 33 28 33 39 37 32
27 38 37 60 83 139 83 34 28 34 39 37 32
28 35 38 58 82 138 80 33 29 34 39 36 32
29 33 39 55 82 138 77 32 28 34 39 35 33
30 33   54 85 135 72 33 28 35 39 36 33
31 33   56   134   32 28   40   34