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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 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 -> 2021-09-30)

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 45 190 194 75 35 28 24 16
2 12 10 9.4 13 44 191 180 72 34 28 25 16
3 12 10 9.4 14 46 201 173 68 33 27 24 16
4 12 10 9.5 14 50 192 172 65 31 26 23 15
5 12 10 9.6 14 52 199 160 63 31 26 23 15
6 12 10 9.7 15 56 199 157 61 32 25 23 15
7 12 9.9 9.8 15 63 196 154 60 32 25 24 15
8 12 10 9.8 16 68 199 150 58 31 25 25 15
9 12 10 9.7 17 71 188 144 56 35 25 24 14
10 12 10 9.9 18 74 182 141 54 33 25 22 15
11 11 10 10 18 75 182 142 53 31 25 22 15
12 11 9.8 10 19 79 170 138 52 34 25 21 14
13 11 9.8 11 19 88 177 136 51 32 24 22 14
14 11 9.7 11 20 95 182 137 49 30 24 21 14
15 11 9.6 11 21 96 180 125 48 30 24 20 14
16 11 9.7 12 21 102 185 118 48 29 25 20 14
17 11 9.7 12 24 116 187 116 47 29 26 20 13
18 11 9.6 12 24 115 179 111 46 30 25 19 13
19 11 9.6 12 25 118 176 108 44 30 25 19 13
20 11 9.6 12 28 122 174 106 43 29 24 19 13
21 11 9.6 12 30 124 182 101 43 30 24 19 13
22 11 9.6 12 35 127 192 100 43 30 24 19 13
23 11 9.5 12 38 128 197 98 44 28 24 19 13
24 11 9.3 12 41 131 195 92 45 27 24 19 13
25 11 9.4 12 40 139 192 89 42 26 24 19 12
26 11 9.4 12 39 152 191 86 43 26 24 18 12
27 10 9.3 12 42 163 188 86 40 26 24 18 12
28 10 9.4 13 40 164 194 81 38 26 24 17 12
29 10 8.7 12 40 171 196 78 37 25 24 17 12
30 10   12 43 178 204 77 35 26 24 17 12
31 10   12   189   75 35   24   12