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USGS Surface-Water Daily Statistics for Wyoming

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Questions or concerns about USGS data and data products in Wyoming and Montana 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 09219200 Blacks Fork above Smiths Fork, near Lyman, WY


Uinta County, Wyoming
Hydrologic Unit Code 14040107
Latitude  41°23'38.94", Longitude 110°12'21.45" NAD83
Drainage area 324.4  square miles
Gage datum 6,433 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 2017-10-01 -> 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 14 13 20 79 52 131 96 34 6.5 27 23 18
2 15 13 21 81 47 175 111 33 9.1 25 24 19
3 15 12 22 86 37 189 88 30 10 24 23 18
4 15 12 22 128 33 167 82 28 28 20 22 19
5 15 13 22 137 35 213 101 27 28 15 21 19
6 15 13 22 113 33 221 87 29 23 14 19 19
7 15 13 23 101 34 312 71 27 18 16 20 19
8 15 13 24 89 38 369 61 24 15 17 24 19
9 14 13 25 89 30 355 46 26 16 17 22 18
10 13 12 25 72 29 280 41 20 12 17 20 17
11 13 12 25 52 25 237 36 22 23 17 18 17
12 14 13 25 50 23 224 37 19 25 16 18 17
13 13 13 25 52 28 214 33 18 18 17 18 17
14 13 13 25 54 53 230 31 16 16 16 18 17
15 13 14 31 80 66 230 26 18 17 15 17 16
16 12 13 35 78 74 227 30 14 14 16 18 16
17 12 13 38 61 77 209 31 9.2 11 17 20 15
18 12 13 41 53 98 198 27 8.1 12 16 19 15
19 11 13 49 48 130 159 25 6.7 12 16 20 15
20 12 14 39 46 138 131 44 8 11 17 20 15
21 12 11 37 48 137 136 46 8.9 13 17 18 16
22 12 14 33 71 147 151 39 8.5 14 18 17 16
23 12 15 33 50 151 166 41 9.3 13 18 17 16
24 12 15 34 48 163 129 41 8.1 14 18 17 16
25 12 15 36 47 151 100 40 7.4 14 17 17 15
26 12 15 39 44 157 96 35 6.2 13 16 16 15
27 11 18 37 54 200 79 29 5.6 14 15 16 15
28 11 19 34 54 217 55 28 9.6 20 16 17 14
29 12 49 50 49 215 58 26 10 25 14 17 14
30 12   59 54 187 68 28 8.4 27 16 17 14
31 12   56   143   24 7.2   20   14