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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 25, 2018 - USGS water-resources monitoring will continue with partner funds and USGS Cooperative Matching Funds at the following sites:
  • 06114700 Judith R nr mouth nr Winifred, MT (seasonal streamflow)
  • 12324200 Clark Fork at Deer Lodge, MT (annual streamflow)
  • 12324680 Clark Fork at Gold Creek, MT (annual streamflow)
USGS water-resources monitoring will be discontinued at the following sites effective October 1, 2018:
  • 06024540 Big Hole R bel Mudd Cr nr Wisdom, MT (seasonal water temperature)
  • 06040000 Madison R nr Cameron, MT (seasonal streamflow and water temperature)
  • 06308400 Pumpkin Cr nr Miles City, MT (annual streamflow, water temperature, and sampling)
USGS monitoring activities at these sites were funded by partner agencies. Lack of partner funding for these sites resulted in discontinuation of all streamgaging activities.

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 12323700 Mill Creek at Opportunity, MT


Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'51.76", Longitude 112°49'11.19" NAD83
Drainage area 42.5  square miles
Gage datum 04,940 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 14 - 15 years of record in, ft3/s   (Calculation Period 2002-10-01 -> 2018-09-30)

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 3.9 4.7 5.2 12 22 95 61 11 4.6 4.0 7.3 5.0
2 4.2 4.6 5.6 11 22 90 58 11 4.4 4.1 7.1 5.3
3 4.4 4.6 5.7 11 24 93 55 10 4.0 4.3 7.3 5.0
4 4.5 4.8 5.6 11 24 93 53 9.5 3.9 4.5 7.1 4.4
5 4.6 5.1 5.7 11 25 95 50 8.4 4.1 5.2 6.8 4.8
6 4.5 5.2 6.1 12 27 98 47 8.0 4.0 5.1 6.7 4.6
7 4.7 5.8 6.2 11 30 94 44 8.0 3.8 5.2 6.9 4.5
8 5.0 6.2 6.0 12 32 99 41 7.7 3.7 5.3 7.6 4.4
9 5.2 6.1 6.5 12 34 95 39 7.7 3.9 5.4 6.6 4.3
10 4.8 6.2 8.1 12 34 92 37 6.1 4.0 5.3 6.3 4.4
11 4.7 6.1 7.5 12 36 90 35 5.7 3.7 5.6 5.7 4.5
12 4.6 6.3 7.1 13 39 84 34 5.2 3.7 5.6 5.7 4.6
13 4.7 6.0 7.3 14 42 87 33 5.1 3.6 5.4 5.9 4.5
14 4.9 5.9 7.8 14 45 81 33 5.5 3.7 5.3 6.0 4.5
15 4.7 5.9 8.6 14 43 76 31 4.9 4.2 5.4 6.1 4.1
16 4.8 5.9 10 14 45 75 29 4.7 4.6 6.0 6.5 4.0
17 5.1 5.6 10 14 49 77 27 4.3 4.5 5.7 6.4 4.0
18 5.3 5.7 10 14 52 73 26 3.9 4.2 5.4 7.0 4.2
19 5.3 5.7 10 14 58 69 24 3.6 4.1 5.9 6.8 4.2
20 5.3 5.3 10 14 66 69 22 3.5 4.2 6.3 6.6 4.3
21 5.4 5.3 10 15 66 71 21 3.6 4.2 6.5 6.7 4.6
22 5.4 5.2 10 17 67 72 20 3.9 4.1 6.9 6.3 4.7
23 5.5 5.2 10 20 70 71 19 6.2 4.0 7.0 6.6 4.6
24 5.2 5.3 9.8 21 77 69 17 6.6 4.0 7.5 6.7 4.8
25 5.5 5.4 9.8 21 81 68 17 6.2 3.9 7.4 6.2 4.8
26 5.5 5.3 9.6 22 82 68 16 5.8 4.0 7.2 5.6 4.7
27 5.2 5.4 9.5 23 81 67 15 5.2 3.8 7.5 5.8 4.5
28 5.0 5.3 9.5 22 84 62 14 4.8 3.6 7.4 5.6 4.4
29 5.0 4.5 9.6 22 88 62 13 4.6 3.6 7.7 5.5 4.1
30 4.9   10 23 89 64 12 4.9 4.0 7.8 5.2 3.9
31 5.0   11   89   11 4.8   7.4   4.0