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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 06169500 Rock Creek bl Horse Creek nr int'l boundary


Valley County, Montana
Hydrologic Unit Code 10050015
Latitude  48°58'09.75", Longitude 106°50'23.43" NAD83
Drainage area 322  square miles
Gage datum 2,530 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 1955-10-01 -> 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 0.92 0.72 13 139 21 23 14 3 0.67 2.3 2.9 1.6
2 0.9 0.75 24 96 21 17 9.7 1.8 0.66 2.9 3.4 1.6
3 0.88 0.74 26 71 19 12 13 1.4 0.68 2.7 3.2 1.5
4 0.85 0.69 27 75 18 23 13 1.1 0.66 2.4 3 1.5
5 0.83 0.69 46 90 17 19 26 1.3 0.65 4.7 2.8 1.5
6 0.81 0.66 49 132 25 11 18 2.1 0.82 3.4 2.7 1.5
7 0.8 0.65 42 168 39 13 18 1.5 2.3 2.8 2.7 1.4
8 0.82 0.64 30 132 24 26 14 1.1 6.3 2.5 2.7 1.4
9 0.82 0.65 28 127 19 17 7.7 2 2.3 2.3 2.6 1.4
10 0.81 0.81 27 125 18 27 8.1 1.5 2.2 2.4 2.4 1.4
11 0.79 1.3 28 122 14 20 14 1.3 3.2 2.4 2.3 1.3
12 0.78 1.5 34 127 15 23 10 1.1 2.1 2.2 2.3 1.4
13 0.77 1.8 55 117 13 17 7.2 1.3 2.7 2.2 2.2 1.3
14 0.76 1.8 53 117 13 20 5.8 1.4 2.1 2.3 2.3 1.3
15 0.73 1.6 62 86 12 20 8.3 1.6 1.5 2.3 2.3 1.3
16 0.72 1.5 65 74 12 18 5.7 1.5 1.3 2.4 2.2 1.2
17 0.71 5.9 86 74 10 15 4.2 1.4 1.2 2.5 2.2 1.2
18 0.7 17 82 69 10 20 3.7 1.2 1.1 2.5 2.1 1.2
19 0.71 13 89 58 11 17 4.4 1.1 1.4 2.5 2.1 1.2
20 0.71 13 93 51 12 13 4.2 1.3 2.1 2.4 2 1.2
21 0.7 9.4 84 44 13 13 3.7 2.9 2.9 2.4 1.9 1.2
22 0.72 10 81 50 14 14 3 1.4 3 2.4 1.9 1.2
23 0.74 6.6 95 50 13 13 2.4 1 2.1 2.3 1.9 1.1
24 0.73 5.6 117 46 27 14 2.2 1.2 2.2 2.3 1.9 1.1
25 0.72 4.7 116 40 19 17 2.2 2.3 2.2 2.4 1.9 1
26 0.72 4.5 110 39 18 12 13 2.2 2.2 2.3 1.8 1
27 0.73 4.2 125 35 15 10 4.3 1.5 2.4 2.3 1.8 1
28 0.74 12 138 32 35 12 3.4 1.2 1.8 2.4 1.7 1
29 0.7 37 163 28 34 26 5.9 1 1.5 2.4 1.7 1
30 0.72   195 24 17 25 5.3 0.87 1.6 2.4 1.7 0.99
31 0.71   192   20   3.1 0.76   2.5   0.96