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USGS Daily Statistics for Colorado

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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 09015000 COLORADO RIVER BL SHADOW MOUNTAIN RESERVOIR, CO.


Grand County, Colorado
Hydrologic Unit Code 14010001
Latitude  40°12'18.70", Longitude 105°50'15.22" NAD83
Drainage area 190  square miles
Gage datum 8,332 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 1947-10-01 -> 2020-09-30)

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 29 24 25 27 91 772 519 89 48 49 56 33
2 28 24 26 37 113 755 538 90 47 50 35 32
3 28 24 26 37 132 845 416 82 45 42 37 32
4 27 24 27 34 124 909 485 77 44 33 38 32
5 25 24 27 32 150 927 390 85 44 33 38 32
6 25 24 27 33 189 934 365 82 43 48 38 31
7 25 24 28 33 232 1,030 362 77 43 43 37 31
8 25 24 28 33 281 1,120 353 75 43 43 36 31
9 25 24 28 35 269 1,040 336 84 43 43 36 31
10 25 24 29 38 262 1,030 254 88 43 40 37 31
11 25 24 29 37 206 1,060 243 80 42 41 42 31
12 25 24 30 34 224 1,050 218 70 42 44 41 31
13 25 24 27 35 255 1,080 226 70 44 39 33 31
14 25 24 25 33 257 1,060 189 67 41 39 34 31
15 25 24 25 37 280 924 186 60 103 33 49 31
16 25 25 26 47 263 902 159 51 63 38 38 31
17 25 25 26 38 278 841 143 49 41 40 39 31
18 25 25 26 38 337 839 163 47 41 53 38 31
19 25 25 25 37 336 933 137 54 41 66 36 31
20 24 25 25 45 374 899 128 46 45 68 34 31
21 24 25 25 57 442 911 107 53 47 67 36 31
22 24 25 25 71 532 792 78 55 48 61 40 31
23 24 25 25 67 552 656 108 51 48 61 57 31
24 24 25 25 69 541 578 95 54 47 59 65 31
25 24 25 25 71 561 559 96 51 43 59 68 31
26 24 25 25 83 602 524 97 47 38 60 69 31
27 24 26 25 93 555 491 91 48 41 60 66 31
28 24 25 25 107 618 506 87 45 42 60 57 31
29 24 25 25 102 689 572 83 49 42 60 48 31
30 24   25 95 681 573 84 49 42 59 34 31
31 24   25   730   87 46   43   30