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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 06138580 Big Sandy Cr ab Spring Coulee, nr Laredo, MT


Hill County, Montana
Hydrologic Unit Code 10050005
Latitude  48°27'09.69", Longitude 109°55'14.98" NAD83
Gage datum 2,562 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 2019-10-01 -> 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 4.5 5.7 17 17 12 34 19 2.4 3.3 6.7 1.7 3.1
2 4.6 5.2 15 35 12 32 18 1.9 3.1 6.9 1.7 3.1
3 4.5 5.1 11 39 11 31 18 1.7 2.8 7 1.9 3
4 4.5 4.4 8.9 28 10 30 17 1.7 2.8 7 2.2 3
5 4.5 4 7 21 9.8 28 19 1.9 2.6 6.9 2.4 3
6 4.5 3.8 7.7 21 10 27 19 6.6 2.8 6.7 2.3 2.9
7 4.5 3.7 8 31 10 26 19 5.4 3.5 6.4 2.3 2.7
8 4.5 3.6 8.6 84 25 25 19 5.5 3.5 6.5 2 2.9
9 4.6 3.3 11 170 71 25 18 5.9 3.2 6.6 2 2.7
10 4.6 3.3 12 380 92 33 19 5.9 2.8 6.6 1.9 2.6
11 4.6 4.8 12 485 123 35 16 6.2 2.6 6.6 1.8 2.7
12 4.5 5.8 13 513 142 33 14 6.2 2.7 6.7 1.7 2.7
13 4.3 5.2 13 466 131 27 13 6 2.8 6.8 1.9 2.7
14 4.3 4.5 13 313 105 19 11 6.2 2.8 6.9 2.2 2.7
15 4.4 3.8 14 174 110 14 10 6.3 2.8 6.9 2.2 2.7
16 4.6 3 16 121 118 13 9.8 5.8 2.7 6.9 2.2 2.8
17 4.9 3 16 98 111 14 9.2 4.5 2.5 6.9 2.1 2.9
18 4.8 3.4 16 81 91 15 9.2 4.2 3.2 7 2.2 2.9
19 4.8 3.9 15 65 76 16 8.9 4 3.5 7.1 2.4 3
20 5.1 5.4 12 52 65 16 7.9 3.7 16 6.3 2.7 3
21 5.1 6.1 9.7 44 60 16 6.9 3.8 16 5.2 3 3.1
22 5.2 5.9 8.2 38 58 16 5.9 3.4 9.3 5 3.4 3.2
23 5.2 5.9 7.8 32 55 15 4.9 3.1 6.3 5.1 3.5 3.4
24 5.4 6.2 7.3 27 49 15 4.5 2.7 5.8 5.3 3.4 3.5
25 5.5 7.4 7.1 22 38 15 3.9 2.5 4.6 5.5 3.5 3.6
26 5.5 14 7.1 19 39 16 3.4 2.3 5.1 5.5 3.4 3.8
27 5.7 12 7.4 16 50 18 3.3 2.1 6.4 5.7 3.2 4
28 6 13 6.8 13 52 18 3 2 6.6 5.7 3.1 4.1
29 6.1 48 6.9 12 46 19 2.6 2.1 6.7 5.6 3 4.2
30 6.3   15 12 40 19 2.3 2.2 6.8 1.7 3 4.3
31 6   17   36   2.6 3.4   1.7   4.5