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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 09165000 DOLORES RIVER BELOW RICO, CO.


Dolores County, Colorado
Hydrologic Unit Code 14030002
Latitude  37°38'20", Longitude 108°03'35" NAD27
Drainage area 106  square miles
Gage datum 8,422.23 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 1951-10-01 -> 2025-09-30)

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 19 18 20 60 246 589 284 96 63 49 34 23
2 18 18 21 60 261 595 265 95 58 48 34 23
3 18 17 21 60 276 613 245 92 54 49 33 23
4 18 17 21 62 292 619 226 88 53 48 32 22
5 18 17 21 67 306 631 210 85 57 51 32 22
6 18 18 22 73 324 647 205 92 70 55 32 22
7 19 18 22 81 335 646 195 88 60 61 31 22
8 19 18 22 89 350 631 185 82 57 53 31 22
9 18 18 23 95 351 618 183 76 60 50 30 21
10 18 18 24 99 352 587 171 74 63 49 29 21
11 18 17 26 102 367 558 159 74 62 47 29 21
12 18 18 27 106 382 545 153 73 67 46 30 21
13 18 18 29 110 395 540 143 71 71 45 29 21
14 18 18 30 116 415 543 133 73 64 44 28 21
15 18 18 31 123 442 523 128 69 66 43 28 20
16 18 18 33 130 468 504 122 67 61 44 28 20
17 18 18 35 143 491 486 118 66 57 45 27 20
18 18 18 36 157 496 470 113 65 56 44 26 20
19 18 18 38 162 509 454 112 67 61 47 26 20
20 18 18 39 165 534 441 105 69 58 46 26 20
21 18 18 40 174 557 430 100 68 57 43 27 19
22 18 18 43 185 565 406 99 63 60 42 25 19
23 18 19 44 194 563 385 98 62 62 41 25 19
24 18 19 45 204 552 375 100 75 58 40 25 19
25 18 19 47 207 539 361 110 80 53 39 24 19
26 18 19 49 203 545 354 115 76 51 39 24 19
27 18 19 51 206 571 339 106 71 49 38 24 19
28 18 19 51 215 596 325 99 68 51 38 23 20
29 18 21 52 221 600 312 100 64 53 37 23 19
30 18   54 231 594 294 93 65 51 36 23 19
31 18   57   583   94 67   35   19