Colorado SNOTEL Snowpack Update Report
Based on Mountain Data from NRCS SNOTEL Sites
**Provisional data, subject to revision**
Data based on the first reading of the day (typically 00:00) for Wednesday, December 06, 2023
Basin   Site Name Elev (ft) Snow Water Equivalent Percent of Current (in) Today's Median (in) Median Peak (in) Median Peak Date Today's Median Median Peak GUNNISON RIVER BASIN   Butte 10200 4.1    3.2    13.7    Apr 08 128    30      Cochetopa Pass 10061 0.4    1.0(16) 4.8(16) Mar 29(16) 40    8      Columbine Pass 9171 4.2    2.8    18.0    Mar 26 150    23      Idarado 9812 1.6    2.9    14.4    Apr 06 55    11      Mc Clure Pass 8774 3.3    3.5    16.6    Apr 04 94    20      Mesa Lakes 10168 3.9    3.8    19.0    Apr 15 103    21      Overland Res. 9893 2.3    2.8    12.4    Apr 05 82    19      Park Cone 9621 3.2    2.2    10.4    Apr 09 145    31      Park Reservoir 9987 5.3    6.0    27.4    Apr 26 88    19      Porphyry Creek 10788 3.8    3.7    17.0    Apr 15 103    22      Red Mountain Pass 11080 4.1    5.8    25.0    Apr 25 71    16      Sargents Mesa 11499 1.0    2.7(12) 11.4(12) Apr 13(12) 37    9      Schofield Pass 10653 7.1    7.7    35.1    Apr 19 92    20      Slumgullion 11560 2.5    4.4    15.0    Apr 21 57    17      Upper Taylor 10717 3.2    2.8(11) 13.6(11) Apr 03(11) 114    24      Wager Gulch 11132 1.3    N/A    N/A    N/A    *   *   Basin Index (%) 90    UPPER COLORADO RIVER BASIN   Arapaho Ridge 10976 4.7    6.2(18) 25.2(18) May 01(18) 76    19      Bear River 9112 2.8    2.9(16) 12.0(16) Apr 21(16) 97    23      Beaver Ck Village 8565 2.7    3.0(17) 11.7(17) Apr 02(17) 90    23      Berthoud Summit 11314 5.0    4.0    23.2    May 03 125    22      Bison Lake 10964 5.5    6.5    26.9    Apr 29 85    20      Buffalo Park 9249 2.5    3.7(25) 14.9(25) Apr 14(25) 68    17      Chapman Tunnel 10100 4.9    3.9(13) 15.4(13) Apr 19(13) 126    32      Columbine 9167 4.9    4.8    24.6    Apr 05 102    20      Copper Mountain 10523 3.4    3.9    17.4    Apr 26 87    20      Elliot Ridge 10549 4.0    3.9(11) 23.2(11) Apr 25(11) 103    17      Fool Creek 11156 4.8    N/A    N/A    N/A    *   *     Fremont Pass 11326 3.1    4.6    20.8    May 11 67    15      Grizzly Peak 11139 3.1    4.4    19.6    Apr 21 70    16      High Lonesome 10638 5.0    N/A    N/A    N/A    *   *     Hoosier Pass 11611 3.0    4.6    17.3    Apr 27 65    17      Independence Pass 10598 3.3    4.8    17.4    Apr 18 69    19      Ivanhoe 10541 5.3    4.1(29) 17.2(29) Apr 26(29) 129    31      Jones Pass 10426 3.3    4.0(21) 16.8(21) Apr 27(21) 82    20      Kiln 9624 3.8    2.8    13.2    Apr 07 136    29      Lake Irene 10682 4.2    5.4    25.4    Apr 26 78    17      Lynx Pass 8919 2.1    2.6    11.5    Apr 04 81    18      Mc Clure Pass 8774 3.3    3.5    16.6    Apr 04 94    20      Mccoy Park 9516 3.4    3.4(18) 14.6(18) Apr 07(18) 100    23      Mesa Lakes 10168 3.9    3.8    19.0    Apr 15 103    21      Middle Fork Camp 8969 2.7    2.8(19) 11.5(19) Apr 04(19) 96    23      Nast Lake 8731 3.3    1.4    8.8    Mar 28 236    38      North Lost Trail 9219 5.3    3.8    17.4    Apr 04 139    30      Overland Res. 9893 2.3    2.8    12.4    Apr 05 82    19      Park Reservoir 9987 5.3    6.0    27.4    Apr 26 88    19      Phantom Valley 9045 1.4    2.3    10.4    Mar 30 61    13      Schofield Pass 10653 7.1    7.7    35.1    Apr 19 92    20      Stillwater Creek 8880 1.3    N/A    N/A    N/A    *   *     Summit Ranch 9371 2.2    2.7    11.4    Apr 09 81    19      Vail Mountain 10310 4.0    4.5    20.8    Apr 27 89    19      Willow Creek Pass 9523 3.7    4.2    16.4    May 03 88    23    Basin Index (%) 93    SOUTH PLATTE RIVER BASIN   Bear Lake 9522 4.0    3.8    19.8    Apr 27 105    20      Berthoud Summit 11314 5.0    4.0    23.2    May 03 125    22      Black Mountain 8980 1.8    3.3(10) 12.5(10) Apr 17(10) 55    14      Buckskin Joe 11166 2.0    2.6(21) 12.6(21) May 02(21) 77    16      Copeland Lake 8555 1.4    1.0    6.0    Mar 08 140    23      Deadman Hill 10239 4.7    5.1    21.8    May 04 92    22      Echo Lake 10694 1.8    1.6(22) 9.0(22) Apr 29(22) 112    20      Hoosier Pass 11611 3.0    4.6    17.3    Apr 27 65    17      Hourglass Lake 9417 2.1    2.8(12) 13.0(12) Apr 19(12) 75    16      Jackwhacker Gulch 11054 2.1    2.7(22) 14.4(22) Apr 25(22) 78    15      Joe Wright 10158 3.7    6.0    24.0    May 05 62    15      Lake Eldora 9728 2.5    2.8    14.0    Apr 09 89    18      Lake Irene 10682 4.2    5.4    25.4    Apr 26 78    17      Long Draw Resv 10008 4.3    4.8(11) 18.3(11) Apr 27(11) 90    23      Loveland Basin 11427 3.9    5.5(28) 24.4(28) May 02(28) 71    16      Michigan Creek 10702 2.3    2.7(22) 13.2(22) Apr 26(22) 85    17      Niwot 9979 2.7    3.2    15.0    Apr 19 84    18      Rough And Tumble 10432 1.2    1.6(22) 8.3(22) Apr 24(22) 75    14      Sawtooth 9676 5.5    N/A    N/A    N/A    *   *     University Camp 10360 3.1    3.8    19.9    May 07 82    16      Wild Basin 9439 3.6    3.9(15) 18.6(15) Apr 25(15) 92    19      Willow Park 10732 3.6    4.2    21.0    Apr 29 86    17    Basin Index (%) 84    LARAMIE AND NORTH PLATTE RIVER BASINS   Arapaho Ridge 10976 4.7    6.2(18) 25.2(18) May 01(18) 76    19      Blackhall Mtn 9839 6.7    8.1(11) 34.6(11) Apr 27(11) 83    19      Columbine 9167 4.9    4.8    24.6    Apr 05 102    20      Deadman Hill 10239 4.7    5.1    21.8    May 04 92    22      Joe Wright 10158 3.7    6.0    24.0    May 05 62    15      Never Summer 10323 5.2    5.8(18) 23.8(18) May 11(18) 90    22      Rawah 9069 1.6    3.2(18) 12.2(18) Apr 07(18) 50    13      Roach 9740 2.8    4.5    17.5    Apr 25 62    16      Tower 10620 9.2    11.2    49.0    May 07 82    19      Whiskey Park 9020 6.2    5.6    30.8    Apr 17 111    20      Willow Creek Pass 9523 3.7    4.2    16.4    May 03 88    23      Zirkel 9338 5.0    5.8(18) 28.5(18) Apr 07(18) 86    18    Basin Index (%) 83    YAMPA AND WHITE RIVER BASINS   Battle Mountain 7498 1.3    2.0    12.6    Mar 27 65    10      Bear River 9112 2.8    2.9(16) 12.0(16) Apr 21(16) 97    23      Bison Lake 10964 5.5    6.5    26.9    Apr 29 85    20      Buffalo Park 9249 2.5    3.7(25) 14.9(25) Apr 14(25) 68    17      Burro Mountain 9317 2.4    3.5    16.6    Apr 13 69    14      Columbine 9167 4.9    4.8    24.6    Apr 05 102    20      Crosho 8973 2.7    2.5    12.6    Apr 05 108    21      Divide Peak 8730 3.6    5.0    21.4    Apr 15 72    17      Dry Lake 8271 4.6    4.9    22.3    Apr 04 94    21      Elk River 8739 3.6    3.6    19.4    Apr 05 100    19      Elkhead Divide 8800 4.2    N/A    N/A    N/A    *   *     Little Snake River 8928 5.5    5.7(16) 29.0(16) Apr 09(16) 96    19      Lost Dog 9327 4.6    4.4(22) 24.5(22) Apr 10(22) 105    19      Lynx Pass 8919 2.1    2.6    11.5    Apr 04 81    18      Old Battle 9860 6.0    8.4    38.8    May 05 71    15      Rabbit Ears 9411 4.7    5.4    27.9    Apr 21 87    17      Ripple Creek 10350 6.0    6.6    29.3    Apr 25 91    20      Sage Creek Basin 7850 1.4    2.8(19) 14.8(19) Apr 03(19) 50    9      Sandstone RS 8152 3.3    2.4    14.2    Apr 05 138    23      Tower 10620 9.2    11.2    49.0    May 07 82    19      Trapper Lake 9759 4.1    N/A    N/A    N/A    *   *     Whiskey Park 9020 6.2    5.6    30.8    Apr 17 111    20    Basin Index (%) 88    ARKANSAS RIVER BASIN   Apishapa 10027 1.4    1.0    7.6    Mar 16 140    18      Brumley 10594 3.0    3.1    11.8    Apr 19 97    25      Fremont Pass 11326 3.1    4.6    20.8    May 11 67    15      Glen Cove 11391 0.7    0.6(16) 5.7(16) Apr 23(16) 117    12      Hayden Pass 10699 1.2    3.4(13) 16.3(13) Apr 18(13) 35    7      Medano Pass 9668 0.2    1.5(25) 7.4(25) Mar 09(25) 13    3      Porphyry Creek 10788 3.8    3.7    17.0    Apr 15 103    22      Saint Elmo 10450 3.1    2.7(13) 11.5(13) Apr 09(13) 115    27      South Colony 10868 2.4    4.6(29) 20.9(29) Apr 23(29) 52    11      Ute Creek 10734 0.7    2.7(20) 12.4(20) Apr 04(20) 26    6      Whiskey Ck 10290 1.6    2.1    11.1    Apr 01 76    14    Basin Index (%) 71    UPPER RIO GRANDE BASIN   Beartown 11600 3.3    5.4    23.2    Apr 17 61    14      Cochetopa Pass 10061 0.4    1.0(16) 4.8(16) Mar 29(16) 40    8      Culebra #2 10562 2.2    3.1    14.0    Apr 05 71    16      Cumbres Trestle 10035 3.3    5.8    26.2    Apr 06 57    13      Grayback 11626 1.6    N/A    N/A    N/A    *   *     Hayden Pass 10699 1.2    3.4(13) 16.3(13) Apr 18(13) 35    7      Lily Pond 11069 1.8    3.2    14.8    Apr 04 56    12      Medano Pass 9668 0.2    1.5(25) 7.4(25) Mar 09(25) 13    3      Middle Creek 11269 3.1    5.4    19.2    Apr 15 57    16      Moon Pass 11128 0.9    1.8(12) 6.8(12) Apr 08(12) 50    13      North Costilla 10598 0.4    1.8    7.0    Mar 20 22    6      San Antonio Sink 9143 1.2    N/A    N/A    N/A    *   *     Sargents Mesa 11499 1.0    2.7(12) 11.4(12) Apr 13(12) 37    9      Shuree 10092 0.9    1.4(10) 6.0(10) Mar 08(10) 64    15      Slumgullion 11560 2.5    4.4    15.0    Apr 21 57    17      Trinchera 10922 1.4    2.6    11.2    Apr 05 54    12      Upper Rio Grande 9379 1.1    1.4    6.6    Mar 18 79    17      Ute Creek 10734 0.7    2.7(20) 12.4(20) Apr 04(20) 26    6      Wager Gulch 11132 1.3    N/A    N/A    N/A    *   *     Wolf Creek Summit 10957 5.4    8.1    35.5    Apr 29 67    15    Basin Index (%) 54    SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS   Beartown 11600 3.3    5.4    23.2    Apr 17 61    14      Black Mesa 11564 3.8    N/A    N/A    N/A    *   *     Cascade 8880 -M    2.1    12.7    Mar 10 *   *     Cascade #2 9012 1.7    2.2    10.4    Mar 06 77    16      Columbine Pass 9171 4.2    2.8    18.0    Mar 26 150    23      Columbus Basin 10781 2.7    5.6(26) 25.8(26) Apr 17(26) 48    10      El Diente Peak 10217 2.3    2.7    14.6    Apr 04 85    16      Lizard Head Pass 10193 3.2    3.8    15.2    Apr 05 84    21      Lone Cone 9755 2.8    3.6    15.2    Apr 01 78    18      Mancos 10044 2.8    3.0(26) 16.3(26) Mar 23(26) 93    17      Mineral Creek 10046 2.2    3.4    15.6    Apr 09 65    14      Molas Lake 10631 -M    4.4    22.0    Apr 11 *   *     Red Mountain Pass 11080 4.1    5.8    25.0    Apr 25 71    16      Scotch Creek 9195 2.0    2.6    12.0    Mar 18 77    17      Sharkstooth 10747 3.0    3.8(16) 18.8(16) Apr 12(16) 79    16      Spud Mountain 10674 3.3    5.3    25.6    Apr 04 62    13      Stump Lakes 11248 2.7    4.4    18.8    Apr 22 61    14      Upper San Juan 10140 4.2    6.2    29.7    Apr 09 68    14      Vallecito 10782 3.0    3.4    14.8    Apr 05 88    20      Weminuche Creek 10749 3.0    3.0(10) 16.4(10) Mar 28(10) 100    18      Wolf Creek Summit 10957 5.4    8.1    35.5    Apr 29 67    15    Basin Index (%) 74

-M  = Missing data.
 *  = Analysis may not provide a valid measure of conditions.
N/A = Not available.

Footnotes for median and average:
(##) = If less than 30 years are available, this value specifies the number of years used for the median and average calculations.
Sites with less than 10 years available do not have medians or averages.

The snow water equivalent percent of median (or average) represents the current snow water
equivalent found at selected SNOTEL sites in or near the basin compared to the median (or average) value
for those sites on this day.

The snow water equivalent percent of median (or average) peak represents the current
snow water equivalent at selected SNOTEL sites in or near the basin compared to the median (or average)
of the maximum seasonal values observed each water year for those sites.


Contact your state water supply staff for assistance.

Medians and averages are calculated for the period 1991-2020.

Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median or average for the day is less than 10% of the maximum median or average value for the year.

* Basin - More than half of the stations for a basin with normals report missing or invalid data.


The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages and the resulting fraction multiplied by 100.