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 Tuesday, April 30, 2024
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 9.5    10.5    13.7    Apr 08 90    69      Cochetopa Pass 10061 0.0    0.0(16) 4.8(16) Mar 29(16) *   0*     Columbine Pass 9171 1.8    2.4    18.0    Mar 26 75    10      Idarado 9812 3.6    8.7    14.4    Apr 06 41    25      Mc Clure Pass 8774 3.3    8.5    16.6    Apr 04 39    20      Mesa Lakes 10168 9.9    15.8    19.0    Apr 15 63    52      Overland Res. 9893 2.3    6.4    12.4    Apr 05 36    19      Park Cone 9621 8.9    6.0    10.4    Apr 09 148    86      Park Reservoir 9987 17.0    26.2    27.4    Apr 26 65    62      Porphyry Creek 10788 16.1    13.8    17.0    Apr 15 117    95      Red Mountain Pass 11080 19.5    23.2    25.0    Apr 25 84    78      Sargents Mesa 11499 8.3    9.8(12) 11.4(12) Apr 13(12) 85    73      Schofield Pass 10653 25.8    31.4    35.1    Apr 19 82    74      Slumgullion 11560 6.7    13.0    15.0    Apr 21 52    45      Upper Taylor 10717 8.3    9.9(11) 13.6(11) Apr 03(11) 84    61      Wager Gulch 11132 4.6    N/A    N/A    N/A    *   *   Basin Index (%) 76    UPPER COLORADO RIVER BASIN   Arapaho Ridge 10976 21.9    23.7(18) 25.2(18) May 01(18) 92    87      Bear River 9112 10.1    11.1(16) 12.0(16) Apr 21(16) 91    84      Beaver Ck Village 8565 6.1    6.0(17) 11.7(17) Apr 02(17) 102    52      Berthoud Summit 11314 23.9    21.7    23.2    May 03 110    103      Bison Lake 10964 24.2    25.2    26.9    Apr 29 96    90      Buffalo Park 9249 13.0    12.0(25) 14.9(25) Apr 14(25) 108    87      Chapman Tunnel 10100 13.8    12.4(13) 15.4(13) Apr 19(13) 111    90      Columbine 9167 16.0    17.2    24.6    Apr 05 93    65      Copper Mountain 10523 15.8    16.0    17.4    Apr 26 99    91      Elliot Ridge 10549 23.6    20.8(11) 23.2(11) Apr 25(11) 113    102      Fool Creek 11156 23.9    N/A    N/A    N/A    *   *     Fremont Pass 11326 19.5    19.8    20.8    May 11 98    94      Grizzly Peak 11139 18.6    17.4    19.6    Apr 21 107    95      High Lonesome 10638 23.9    N/A    N/A    N/A    *   *     Hoosier Pass 11611 18.7    16.8    17.3    Apr 27 111    108      Independence Pass 10598 14.6    16.0    17.4    Apr 18 91    84      Ivanhoe 10541 21.4    16.1(29) 17.2(29) Apr 26(29) 133    124      Jones Pass 10426 15.7    15.7(21) 16.8(21) Apr 27(21) 100    93      Kiln 9624 8.3    7.2    13.2    Apr 07 115    63      Lake Irene 10682 22.9    22.8    25.4    Apr 26 100    90      Lynx Pass 8919 1.9    5.0    11.5    Apr 04 38    17      Mc Clure Pass 8774 3.3    8.5    16.6    Apr 04 39    20      Mccoy Park 9516 9.9    9.4(18) 14.6(18) Apr 07(18) 105    68      Mesa Lakes 10168 9.9    15.8    19.0    Apr 15 63    52      Middle Fork Camp 8969 6.8    5.7(19) 11.5(19) Apr 04(19) 119    59      Nast Lake 8731 0.3    0.0    8.8    Mar 28 *   3*     North Lost Trail 9219 7.8    9.4    17.4    Apr 04 83    45      Overland Res. 9893 2.3    6.4    12.4    Apr 05 36    19      Park Reservoir 9987 17.0    26.2    27.4    Apr 26 65    62      Phantom Valley 9045 7.8    4.6    10.4    Mar 30 170    75      Schofield Pass 10653 25.8    31.4    35.1    Apr 19 82    74      Stillwater Creek 8880 0.1    N/A    N/A    N/A    *   *     Summit Ranch 9371 4.9    7.5    11.4    Apr 09 65    43      Vail Mountain 10310 18.4    19.4    20.8    Apr 27 95    88      Willow Creek Pass 9523 15.6    15.6    16.4    May 03 100    95    Basin Index (%) 95    SOUTH PLATTE RIVER BASIN   Bear Lake 9522 20.4    18.6    19.8    Apr 27 110    103      Berthoud Summit 11314 23.9    21.7    23.2    May 03 110    103      Black Mountain 8980 9.8    9.4(10) 12.5(10) Apr 17(10) 104    78      Buckskin Joe 11166 13.5    11.7(21) 12.6(21) May 02(21) 115    107      Copeland Lake 8555 1.6    0.0    6.0    Mar 08 *   27*     Deadman Hill 10239 22.1    20.0    21.8    May 04 110    101      Echo Lake 10694 9.9    8.2(22) 9.0(22) Apr 29(22) 121    110      Hoosier Pass 11611 18.7    16.8    17.3    Apr 27 111    108      Hourglass Lake 9417 5.5    11.0(12) 13.0(12) Apr 19(12) 50    42      Jackwhacker Gulch 11054 11.0    12.8(22) 14.4(22) Apr 25(22) 86    76      Joe Wright 10158 22.3    22.1    24.0    May 05 101    93      Lake Eldora 9728 8.3    8.5    14.0    Apr 09 98    59      Lake Irene 10682 22.9    22.8    25.4    Apr 26 100    90      Long Draw Resv 10008 14.9    16.2(11) 18.3(11) Apr 27(11) 92    81      Loveland Basin 11427 21.8    22.7(28) 24.4(28) May 02(28) 96    89      Michigan Creek 10702 12.4    11.7(22) 13.2(22) Apr 26(22) 106    94      Niwot 9979 13.8    12.8    15.0    Apr 19 108    92      Rough And Tumble 10432 5.4    6.9(22) 8.3(22) Apr 24(22) 78    65      Sawtooth 9676 27.5    N/A    N/A    N/A    *   *     University Camp 10360 19.8    19.0    19.9    May 07 104    99      Wild Basin 9439 21.1    15.9(15) 18.6(15) Apr 25(15) 133    113      Willow Park 10732 20.0    18.4    21.0    Apr 29 109    95    Basin Index (%) 104    LARAMIE AND NORTH PLATTE RIVER BASINS   Arapaho Ridge 10976 21.9    23.7(18) 25.2(18) May 01(18) 92    87      Blackhall Mtn 9839 35.0    31.5(11) 34.6(11) Apr 27(11) 111    101      Columbine 9167 16.0    17.2    24.6    Apr 05 93    65      Deadman Hill 10239 22.1    20.0    21.8    May 04 110    101      Joe Wright 10158 22.3    22.1    24.0    May 05 101    93      Never Summer 10323 23.4    22.2(18) 23.8(18) May 11(18) 105    98      Rawah 9069 10.2    7.0(18) 12.2(18) Apr 07(18) 146    84      Roach 9740 13.0    15.4    17.5    Apr 25 84    74      Tower 10620 43.7    46.2    49.0    May 07 95    89      Whiskey Park 9020 27.1    27.6    30.8    Apr 17 98    88      Willow Creek Pass 9523 15.6    15.6    16.4    May 03 100    95      Zirkel 9338 16.9    23.7(18) 28.5(18) Apr 07(18) 71    59    Basin Index (%) 98    YAMPA AND WHITE RIVER BASINS   Battle Mountain 7498 0.3    0.7    12.6    Mar 27 43*   2*     Bear River 9112 10.1    11.1(16) 12.0(16) Apr 21(16) 91    84      Bison Lake 10964 24.2    25.2    26.9    Apr 29 96    90      Buffalo Park 9249 13.0    12.0(25) 14.9(25) Apr 14(25) 108    87      Burro Mountain 9317 6.5    11.4    16.6    Apr 13 57    39      Columbine 9167 16.0    17.2    24.6    Apr 05 93    65      Crosho 8973 6.6    4.8    12.6    Apr 05 138    52      Divide Peak 8730 14.9    17.3    21.4    Apr 15 86    70      Dry Lake 8271 17.5    14.8    22.3    Apr 04 118    78      Elk River 8739 8.0    13.2    19.4    Apr 05 61    41      Elkhead Divide 8800 15.9    N/A    N/A    N/A    *   *     Little Snake River 8928 23.3    24.4(16) 29.0(16) Apr 09(16) 95    80      Lost Dog 9327 21.2    21.8(22) 24.5(22) Apr 10(22) 97    87      Lynx Pass 8919 1.9    5.0    11.5    Apr 04 38    17      Old Battle 9860 33.8    35.4    38.8    May 05 95    87      Rabbit Ears 9411 26.1    26.0    27.9    Apr 21 100    94      Ripple Creek 10350 27.6    27.7    29.3    Apr 25 100    94      Sage Creek Basin 7850 1.9    2.1(19) 14.8(19) Apr 03(19) 90    13      Sandstone RS 8152 6.4    6.4    14.2    Apr 05 100    45      Tower 10620 43.7    46.2    49.0    May 07 95    89      Trapper Lake 9759 5.8    N/A    N/A    N/A    *   *     Whiskey Park 9020 27.1    27.6    30.8    Apr 17 98    88    Basin Index (%) 94    ARKANSAS RIVER BASIN   Apishapa 10027 0.4    0.0    7.6    Mar 16 *   5*     Brumley 10594 9.6    9.2    11.8    Apr 19 104    81      Fremont Pass 11326 19.5    19.8    20.8    May 11 98    94      Glen Cove 11391 8.6    4.1(16) 5.7(16) Apr 23(16) 210    151      Hayden Pass 10699 9.7    13.4(13) 16.3(13) Apr 18(13) 72    60      Medano Pass 9668 0.0    0.0(25) 7.4(25) Mar 09(25) *   0*     Porphyry Creek 10788 16.1    13.8    17.0    Apr 15 117    95      Saint Elmo 10450 6.0    7.1(13) 11.5(13) Apr 09(13) 85    52      South Colony 10868 11.5    19.3(29) 20.9(29) Apr 23(29) 60    55      Ute Creek 10734 0.0    9.8(20) 12.4(20) Apr 04(20) 0    0      Whiskey Ck 10290 0.1    5.0    11.1    Apr 01 2    1    Basin Index (%) 80    UPPER RIO GRANDE BASIN   Beartown 11600 16.2    19.7    23.2    Apr 17 82    70      Cochetopa Pass 10061 0.0    0.0(16) 4.8(16) Mar 29(16) *   0*     Culebra #2 10562 4.4    8.0    14.0    Apr 05 55    31      Cumbres Trestle 10035 16.6    19.8    26.2    Apr 06 84    63      Grayback 11626 0.1    N/A    N/A    N/A    *   *     Hayden Pass 10699 9.7    13.4(13) 16.3(13) Apr 18(13) 72    60      Lily Pond 11069 2.6    8.6    14.8    Apr 04 30    18      Medano Pass 9668 0.0    0.0(25) 7.4(25) Mar 09(25) *   0*     Middle Creek 11269 12.4    17.2    19.2    Apr 15 72    65      Moon Pass 11128 0.4    1.6(12) 6.8(12) Apr 08(12) 25    6      North Costilla 10598 0.1    0.8    7.0    Mar 20 12    1      San Antonio Sink 9143 0.0    N/A    N/A    N/A    *   *     Sargents Mesa 11499 8.3    9.8(12) 11.4(12) Apr 13(12) 85    73      Shuree 10092 0.1    0.0(10) 6.0(10) Mar 08(10) *   2*     Slumgullion 11560 6.7    13.0    15.0    Apr 21 52    45      Trinchera 10922 4.0    4.8    11.2    Apr 05 83    36      Upper Rio Grande 9379 0.0    0.0    6.6    Mar 18 *   0*     Ute Creek 10734 0.0    9.8(20) 12.4(20) Apr 04(20) 0    0      Wager Gulch 11132 4.6    N/A    N/A    N/A    *   *     Wolf Creek Summit 10957 21.8    34.6    35.5    Apr 29 63    61    Basin Index (%) 64    SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS   Beartown 11600 16.2    19.7    23.2    Apr 17 82    70      Black Mesa 11564 19.9    N/A    N/A    N/A    *   *     Cascade 8880 -M    0.0    12.7    Mar 10 *   *     Cascade #2 9012 0.2    0.0    10.4    Mar 06 *   2*     Columbine Pass 9171 1.8    2.4    18.0    Mar 26 75    10      Columbus Basin 10781 20.7    22.2(26) 25.8(26) Apr 17(26) 93    80      El Diente Peak 10217 7.1    7.4    14.6    Apr 04 96    49      Lizard Head Pass 10193 9.4    10.2    15.2    Apr 05 92    62      Lone Cone 9755 0.6    3.4    15.2    Apr 01 18    4      Mancos 10044 3.5    1.8(26) 16.3(26) Mar 23(26) 194    21      Mineral Creek 10046 6.7    10.6    15.6    Apr 09 63    43      Molas Lake 10631 7.9    18.6    22.0    Apr 11 42    36      Red Mountain Pass 11080 19.5    23.2    25.0    Apr 25 84    78      Scotch Creek 9195 0.1    0.0    12.0    Mar 18 *   1*     Sharkstooth 10747 10.6    14.9(16) 18.8(16) Apr 12(16) 71    56      Spud Mountain 10674 11.3    17.8    25.6    Apr 04 63    44      Stump Lakes 11248 15.1    17.6    18.8    Apr 22 86    80      Upper San Juan 10140 16.9    23.8    29.7    Apr 09 71    57      Vallecito 10782 8.3    9.4    14.8    Apr 05 88    56      Weminuche Creek 10749 6.2    7.1(10) 16.4(10) Mar 28(10) 87    38      Wolf Creek Summit 10957 21.8    34.6    35.5    Apr 29 63    61    Basin Index (%) 75

-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.