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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 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 126  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 -> 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 28 24 22 35 143 748 520 142 69 61 47 34
2 28 23 22 33 158 759 492 138 69 60 46 34
3 28 23 22 34 172 777 480 131 67 61 45 33
4 28 23 22 36 183 799 444 127 69 60 44 33
5 28 23 23 37 195 858 419 124 68 64 45 33
6 28 23 23 38 209 895 400 116 68 64 45 33
7 28 23 23 40 222 888 391 114 67 62 45 32
8 27 23 23 42 232 876 380 112 65 60 44 32
9 28 23 23 45 247 829 363 107 65 58 43 32
10 27 23 23 47 260 805 355 103 65 57 42 32
11 27 23 23 52 271 764 341 101 65 58 42 31
12 27 23 22 56 287 755 330 97 67 56 42 31
13 27 23 23 57 308 740 309 94 64 56 40 31
14 26 23 24 60 337 742 292 92 64 57 39 31
15 26 23 24 59 385 734 275 89 65 56 41 31
16 26 23 25 61 443 739 263 86 63 54 41 31
17 26 22 24 64 467 710 248 85 62 55 40 31
18 26 22 24 68 498 705 236 94 62 53 40 31
19 26 22 24 69 537 718 234 94 62 52 38 30
20 26 22 24 71 552 713 222 89 62 52 38 30
21 26 22 25 74 553 696 205 89 61 51 37 29
22 25 22 25 81 540 668 202 87 62 50 36 29
23 25 22 25 89 549 642 197 85 63 50 36 29
24 25 22 25 94 576 618 188 80 60 49 36 29
25 25 22 26 97 596 601 180 81 58 50 35 30
26 25 22 26 102 619 588 175 80 62 49 35 30
27 25 22 27 108 655 578 167 80 67 48 34 29
28 25 22 28 114 721 561 158 76 71 48 34 29
29 25 22 30 123 737 545 153 74 66 48 35 28
30 24   31 133 734 552 155 71 65 48 35 28
31 24   34   746   147 70   48   28