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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 06197800 East Boulder River bl Dry Fork Cr nr Mcleod, MT


Sweet Grass County, Montana
Hydrologic Unit Code 10070002
Latitude  45°30'44.4", Longitude 110°05'15.8" NAD83
Drainage area 38.9  square miles
Gage datum 6,152 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 -> 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 7.3 4.7 4 3.8 21 353 148 27 17 15 16 11
2 7.2 4.4 4.1 3.8 25 361 142 27 17 17 16 11
3 7.2 4.3 4 4 29 425 134 29 17 18 17 11
4 7.1 4.3 3.9 4.2 32 423 141 27 17 17 16 11
5 7 4.3 3.9 4.2 36 460 124 30 17 18 16 11
6 6.8 4.3 4 4.3 33 430 114 28 16 18 16 11
7 6.7 4.4 3.9 4.3 35 380 110 28 16 18 16 11
8 5.9 4.5 3.9 4.4 37 310 100 27 16 18 15 11
9 6 4.5 3.8 4.5 35 290 86 26 18 16 15 10
10 6 4.4 3.8 4.8 31 324 81 28 18 16 15 10
11 6.1 4.4 3.7 5.2 29 358 73 25 18 17 15 10
12 6 4.4 3.7 5.6 28 390 65 24 17 17 15 10
13 6 4.4 3.6 5.3 29 463 61 24 16 18 14 10
14 5.9 4.4 3.7 5.3 39 325 60 23 16 18 14 10
15 5.8 4.3 3.7 5.2 50 258 57 22 16 17 14 9.9
16 5.8 4.2 3.7 5.1 66 245 53 21 15 19 14 9.7
17 5.8 4.2 3.7 5.3 87 272 48 21 15 21 14 9.6
18 5.7 4.2 3.7 5.1 118 299 44 21 15 20 13 9.4
19 5.4 4.3 3.6 5.1 157 251 41 22 15 20 13 9
20 5.4 4.3 3.7 5 180 204 39 25 15 21 13 8.8
21 5.4 4.3 3.6 5.3 165 178 38 24 15 20 12 8.5
22 5.2 4.2 3.7 5.3 155 182 36 22 18 19 13 8.4
23 5.3 4.2 3.7 5.7 160 196 35 21 18 20 13 8.3
24 5.3 4.1 3.8 5.7 148 234 34 20 17 19 12 8.2
25 5.3 4.1 3.7 5.8 141 194 32 20 16 18 12 8.2
26 5.2 4.2 3.8 6.2 148 169 31 20 16 19 12 7.9
27 5.1 4.1 3.6 6.9 182 175 30 19 16 17 12 7.5
28 5 4.1 3.7 7.1 230 193 30 20 15 17 12 7.3
29 5 5.1 3.7 8.4 250 191 30 19 15 17 12 7.2
30 5   3.6 15 300 161 29 18 15 17 11 7.3
31 4.9   3.8   365   28 18   17   7.3