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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 12330000 Boulder Creek at Maxville MT


Granite County, Montana
Hydrologic Unit Code 17010202
Latitude  46°28'17.95", Longitude 113°14'08.77" NAD83
Drainage area 70.5  square miles
Gage datum 4,750 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 1939-10-01 -> 2025-09-30)

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 19 19 18 21 46 194 108 27 17 21 25 23
2 19 18 18 21 48 193 103 26 17 22 25 23
3 19 18 18 21 52 203 100 26 16 22 25 23
4 19 19 18 21 56 209 96 25 16 22 25 22
5 19 19 18 22 60 210 90 25 16 22 25 22
6 19 19 18 22 65 209 85 25 16 22 25 22
7 19 19 18 22 71 208 81 24 16 22 25 22
8 20 20 18 23 75 205 77 23 16 22 25 21
9 19 19 18 23 77 197 72 22 17 22 25 21
10 19 19 19 23 81 196 71 22 17 22 25 21
11 19 20 18 23 82 194 68 21 17 22 24 21
12 19 19 18 24 86 188 64 21 17 23 24 21
13 19 19 18 24 90 201 62 21 17 23 24 21
14 19 19 18 25 95 189 59 21 17 23 24 21
15 20 18 19 26 101 181 55 20 18 24 24 20
16 19 18 19 26 110 181 51 20 18 24 24 20
17 19 19 19 27 119 186 49 20 18 24 24 20
18 19 18 19 28 125 181 47 19 19 24 24 20
19 19 18 19 28 133 180 46 19 19 24 24 21
20 19 18 19 30 142 170 43 19 19 24 23 21
21 19 18 19 32 150 168 41 18 20 24 23 21
22 18 18 19 34 159 160 39 19 20 24 23 21
23 19 18 19 36 155 150 38 20 19 25 23 21
24 19 18 19 38 162 144 36 19 19 25 24 21
25 18 18 19 38 168 139 34 18 20 25 23 20
26 18 19 19 38 174 131 33 18 20 25 23 20
27 18 18 20 39 179 126 32 17 20 25 23 20
28 18 18 20 40 186 121 31 17 21 25 23 20
29 18 18 20 42 192 120 29 17 21 25 23 20
30 18   20 44 194 114 29 17 21 25 22 20
31 18   20   195   28 17   25   19