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USGS Surface-Water 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 09217900 BLACKS FORK NEAR ROBERTSON, WY


Summit County, Utah
Hydrologic Unit Code 14040107
Latitude  40°57'32.5", Longitude 110°34'47.0" NAD83
Drainage area 130  square miles
Gage datum 8,811.3 feet above NGVD29
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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 1965-10-01 -> 2023-09-30)

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 28 24 22 35 143 741 524 144 68 61 47 34
2 28 23 22 33 158 752 496 140 67 59 46 34
3 28 23 22 34 173 771 485 132 66 61 45 33
4 28 23 22 36 183 791 448 129 67 60 44 33
5 28 23 23 37 195 842 423 125 66 63 44 33
6 28 23 23 38 209 877 404 117 66 63 45 33
7 28 23 23 41 223 866 395 114 65 62 45 32
8 27 23 23 43 234 851 384 112 64 60 44 32
9 28 23 23 45 249 809 367 107 64 57 43 32
10 27 23 23 48 263 795 359 102 64 57 42 32
11 27 23 23 52 274 756 345 100 64 58 42 31
12 27 23 22 56 289 747 334 97 67 56 41 31
13 27 23 23 56 309 732 313 94 63 55 40 31
14 26 23 24 59 337 737 296 92 63 56 39 31
15 26 23 24 59 385 731 278 89 64 56 41 31
16 26 23 25 60 443 737 266 85 63 54 41 31
17 26 23 24 64 464 710 251 85 61 54 40 31
18 27 22 24 67 494 707 239 94 61 53 40 31
19 26 22 24 68 531 722 236 93 61 52 38 30
20 26 22 24 70 547 717 224 89 61 52 38 30
21 26 22 25 73 554 700 207 89 60 51 37 29
22 25 22 25 80 542 671 204 86 61 50 36 29
23 25 22 25 86 553 645 199 83 62 49 36 29
24 25 22 25 91 580 621 190 78 59 49 36 29
25 25 22 26 93 600 604 182 79 58 50 35 30
26 25 22 26 99 625 591 177 78 62 48 35 30
27 25 22 27 106 660 580 169 79 67 48 34 29
28 25 22 28 112 724 564 160 75 70 48 34 29
29 25 22 30 122 734 549 155 72 65 48 35 28
30 24   31 132 728 556 157 71 65 47 35 28
31 24   34   741   149 69   48   28