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USGS Daily Statistics for the Nation

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 -> 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 12 10 9.5 13 45 188 192 74 36 28 24 16
2 12 10 9.5 13 45 191 179 71 34 28 24 17
3 12 10 9.6 13 49 204 172 67 33 26 24 16
4 12 10 9.6 14 52 198 170 64 32 26 23 16
5 12 10 9.6 15 55 204 158 62 31 26 24 16
6 12 10 9.7 15 60 202 155 60 32 25 24 15
7 12 10 9.8 15 65 195 152 59 32 25 24 15
8 12 10 9.7 16 68 197 150 57 31 24 26 15
9 12 10 9.7 17 70 187 144 55 34 24 24 15
10 12 10 9.9 18 72 186 140 53 32 25 22 15
11 11 10 10 18 73 187 139 52 30 25 22 15
12 11 9.8 10 19 77 172 136 52 33 25 21 15
13 11 9.9 11 19 88 179 134 51 31 24 22 14
14 11 9.8 11 20 93 185 135 49 30 24 21 14
15 11 9.7 11 21 97 182 123 47 29 24 21 14
16 11 9.8 12 21 104 184 116 47 29 24 20 14
17 11 9.7 12 24 118 187 114 46 29 26 20 13
18 11 9.7 12 24 118 184 109 45 30 25 20 13
19 11 9.7 12 25 119 180 105 43 29 24 19 13
20 11 9.7 12 27 123 176 104 42 29 24 19 13
21 11 9.7 12 29 125 184 99 42 30 24 19 13
22 11 9.7 12 33 128 191 98 42 29 24 19 13
23 11 9.6 12 36 127 198 96 43 28 24 19 13
24 11 9.4 12 39 130 195 90 44 27 24 19 13
25 11 9.5 12 38 137 189 87 42 26 23 19 12
26 11 9.5 12 37 150 188 85 42 26 23 18 12
27 10 9.4 12 40 162 187 85 39 26 24 18 12
28 10 9.5 13 38 165 194 80 37 26 24 17 12
29 10 9.1 13 39 170 196 77 36 25 24 17 12
30 10   12 42 175 202 76 36 25 23 17 12
31 10   12   185   73 36   23   12