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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 May 12, 2020 - USGS water-resources monitoring will be discontinued May 31, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site were funded by partner entities and USGS Cooperative Matching Funds. Lack of partner funding for this site will result in discontinuation of all USGS monitoring activities. Historical data will continue to be available.

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 12377150 Mission Creek ab reservoir nr St. Ignatius MT


Lake County, Montana
Hydrologic Unit Code 17010212
Latitude  47°19'22.16", Longitude 113°58'45.77" NAD83
Drainage area 12.4  square miles
Gage datum 3,460 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 1982-10-01 -> 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 12 10 9.3 13 43 183 190 74 36 28 24 16
2 12 10 9.4 13 43 189 178 71 34 28 25 16
3 12 10 9.4 14 45 199 172 68 33 27 24 16
4 12 10 9.5 14 50 190 171 65 31 26 23 15
5 12 10 9.5 15 52 197 157 63 31 26 23 15
6 12 9.9 9.7 15 56 197 155 61 32 25 23 15
7 12 9.9 9.8 15 63 193 152 59 32 25 24 15
8 12 10 9.7 16 68 197 149 58 31 25 25 15
9 12 10 9.7 17 71 188 143 56 35 25 24 14
10 12 10 9.9 18 74 183 139 54 33 25 22 15
11 11 9.9 10 18 75 181 140 53 31 25 22 15
12 11 9.7 10 19 79 167 136 52 34 25 21 14
13 11 9.7 11 19 89 172 135 51 32 24 22 14
14 11 9.6 11 20 96 177 137 49 30 24 21 14
15 11 9.6 12 21 97 179 125 48 30 24 20 14
16 11 9.7 12 21 103 185 117 48 29 25 20 14
17 11 9.6 12 24 117 188 114 46 29 26 20 13
18 11 9.6 12 24 116 179 110 45 30 25 19 13
19 11 9.6 12 25 118 175 106 44 30 25 19 13
20 11 9.6 12 28 119 172 105 43 29 24 19 13
21 11 9.5 12 31 120 178 99 42 30 24 19 13
22 11 9.6 12 35 125 188 99 43 30 24 19 13
23 11 9.5 12 38 128 193 97 44 28 24 19 13
24 11 9.3 12 41 132 190 91 45 27 24 19 13
25 11 9.3 12 40 140 186 88 42 26 24 19 12
26 11 9.4 12 39 152 186 86 43 26 24 18 12
27 10 9.2 12 42 161 182 86 40 26 24 18 12
28 10 9.3 13 40 161 190 81 38 26 24 17 12
29 10 8.4 13 41 168 193 78 37 26 24 17 12
30 10   12 42 172 200 76 36 26 24 17 12
31 10   12   176   74 35   24   12