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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 -> 2019-09-30)

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 26 27 96 818 432 92 49 49 57 33
2 28 24 26 38 119 799 458 93 48 51 35 32
3 28 24 27 38 140 888 357 85 46 42 37 32
4 27 24 27 35 131 920 429 79 45 32 38 31
5 26 24 27 32 158 941 348 88 45 33 38 31
6 25 24 28 34 199 954 325 84 44 49 38 31
7 25 24 28 34 246 1,040 326 79 43 43 37 30
8 25 24 29 34 297 1,100 317 77 43 44 36 30
9 25 24 29 36 284 1,020 308 86 44 44 35 31
10 26 24 29 39 278 1,040 238 91 44 41 36 31
11 26 24 30 38 218 1,070 243 82 42 42 42 30
12 25 25 30 35 237 1,070 210 72 42 44 41 30
13 25 25 27 36 269 1,080 201 71 44 39 33 30
14 25 25 25 34 272 1,040 161 68 42 39 33 30
15 25 25 26 38 296 912 164 61 107 33 49 30
16 25 25 26 49 276 881 140 52 64 38 37 30
17 25 25 26 40 281 821 123 50 41 40 39 30
18 25 25 26 39 351 831 154 47 41 54 37 30
19 25 25 25 39 356 918 142 55 41 68 35 30
20 25 25 25 47 396 873 132 46 46 70 33 30
21 25 25 25 60 468 857 110 54 48 69 35 30
22 25 26 25 74 564 756 79 56 48 63 40 30
23 24 25 25 70 586 633 111 52 48 63 58 30
24 24 25 25 72 573 567 97 55 47 61 66 30
25 24 25 25 74 595 553 98 51 43 61 69 30
26 25 26 25 87 639 525 99 48 38 61 71 30
27 25 26 25 85 589 485 92 48 41 62 68 30
28 24 25 25 97 656 477 89 46 42 61 59 30
29 24 25 25 102 731 501 85 50 42 62 48 30
30 24   25 99 722 515 85 49 42 60 33 30
31 24   25   774   89 47   44   29