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 Thursday, April 18, 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 13.5    12.3    13.7    Apr 08 110    99      Cochetopa Pass 10061 2.4    0.4(16) 4.8(16) Mar 29(16) 600*   50*     Columbine Pass 9171 12.4    11.6    18.0    Mar 26 107    69      Idarado 9812 8.7    11.5    14.4    Apr 06 76    60      Mc Clure Pass 8774 10.5    13.4    16.6    Apr 04 78    63      Mesa Lakes 10168 13.2    16.9    19.0    Apr 15 78    69      Overland Res. 9893 7.0    9.0    12.4    Apr 05 78    56      Park Cone 9621 11.8    9.4    10.4    Apr 09 126    113      Park Reservoir 9987 19.6    25.2    27.4    Apr 26 78    72      Porphyry Creek 10788 18.3    15.0    17.0    Apr 15 122    108      Red Mountain Pass 11080 21.0    23.6    25.0    Apr 25 89    84      Sargents Mesa 11499 9.6    10.0(12) 11.4(12) Apr 13(12) 96    84      Schofield Pass 10653 30.4    32.8    35.1    Apr 19 93    87      Slumgullion 11560 11.1    14.2    15.0    Apr 21 78    74      Upper Taylor 10717 12.9    11.6(11) 13.6(11) Apr 03(11) 111    95      Wager Gulch 11132 9.2    N/A    N/A    N/A    *   *   Basin Index (%) 93    UPPER COLORADO RIVER BASIN   Arapaho Ridge 10976 22.7    23.2(18) 25.2(18) May 01(18) 98    90      Bear River 9112 11.9    11.7(16) 12.0(16) Apr 21(16) 102    99      Beaver Ck Village 8565 10.5    8.3(17) 11.7(17) Apr 02(17) 127    90      Berthoud Summit 11314 22.4    20.8    23.2    May 03 108    97      Bison Lake 10964 25.6    25.3    26.9    Apr 29 101    95      Buffalo Park 9249 14.9    13.9(25) 14.9(25) Apr 14(25) 107    100      Chapman Tunnel 10100 15.9    14.5(13) 15.4(13) Apr 19(13) 110    103      Columbine 9167 23.9    21.8    24.6    Apr 05 110    97      Copper Mountain 10523 15.6    15.6    17.4    Apr 26 100    90      Elliot Ridge 10549 24.1    21.4(11) 23.2(11) Apr 25(11) 113    104      Fool Creek 11156 22.1    N/A    N/A    N/A    *   *     Fremont Pass 11326 -M    18.1    20.8    May 11 *   *     Grizzly Peak 11139 17.6    18.2    19.6    Apr 21 97    90      High Lonesome 10638 23.2    N/A    N/A    N/A    *   *     Hoosier Pass 11611 18.2    16.6    17.3    Apr 27 110    105      Independence Pass 10598 17.3    16.2    17.4    Apr 18 107    99      Ivanhoe 10541 20.6    16.1(29) 17.2(29) Apr 26(29) 128    120      Jones Pass 10426 15.5    15.4(21) 16.8(21) Apr 27(21) 101    92      Kiln 9624 12.2    10.3    13.2    Apr 07 118    92      Lake Irene 10682 22.3    23.4    25.4    Apr 26 95    88      Lynx Pass 8919 7.8    8.7    11.5    Apr 04 90    68      Mc Clure Pass 8774 10.5    13.4    16.6    Apr 04 78    63      Mccoy Park 9516 14.2    12.4(18) 14.6(18) Apr 07(18) 115    97      Mesa Lakes 10168 13.2    16.9    19.0    Apr 15 78    69      Middle Fork Camp 8969 9.6    10.4(19) 11.5(19) Apr 04(19) 92    83      Nast Lake 8731 3.9    2.0    8.8    Mar 28 195    44      North Lost Trail 9219 14.2    12.6    17.4    Apr 04 113    82      Overland Res. 9893 7.0    9.0    12.4    Apr 05 78    56      Park Reservoir 9987 19.6    25.2    27.4    Apr 26 78    72      Phantom Valley 9045 8.6    7.6    10.4    Mar 30 113    83      Schofield Pass 10653 30.4    32.8    35.1    Apr 19 93    87      Stillwater Creek 8880 2.0    N/A    N/A    N/A    *   *     Summit Ranch 9371 8.4    10.6    11.4    Apr 09 79    74      Vail Mountain 10310 20.2    19.4    20.8    Apr 27 104    97      Willow Creek Pass 9523 15.8    14.4    16.4    May 03 110    96    Basin Index (%) 101    SOUTH PLATTE RIVER BASIN   Bear Lake 9522 19.4    18.6    19.8    Apr 27 104    98      Berthoud Summit 11314 22.4    20.8    23.2    May 03 108    97      Black Mountain 8980 10.8    11.6(10) 12.5(10) Apr 17(10) 93    86      Buckskin Joe 11166 11.7    11.2(21) 12.6(21) May 02(21) 104    93      Copeland Lake 8555 0.2    0.0    6.0    Mar 08 *   3*     Deadman Hill 10239 21.1    17.5    21.8    May 04 121    97      Echo Lake 10694 9.0    8.2(22) 9.0(22) Apr 29(22) 110    100      Hoosier Pass 11611 18.2    16.6    17.3    Apr 27 110    105      Hourglass Lake 9417 8.4    12.2(12) 13.0(12) Apr 19(12) 69    65      Jackwhacker Gulch 11054 11.0    13.4(22) 14.4(22) Apr 25(22) 82    76      Joe Wright 10158 21.4    22.0    24.0    May 05 97    89      Lake Eldora 9728 8.8    10.6    14.0    Apr 09 83    63      Lake Irene 10682 22.3    23.4    25.4    Apr 26 95    88      Long Draw Resv 10008 16.3    17.1(11) 18.3(11) Apr 27(11) 95    89      Loveland Basin 11427 18.9    20.9(28) 24.4(28) May 02(28) 90    77      Michigan Creek 10702 11.7    11.4(22) 13.2(22) Apr 26(22) 103    89      Niwot 9979 12.5    12.8    15.0    Apr 19 98    83      Rough And Tumble 10432 6.6    6.6(22) 8.3(22) Apr 24(22) 100    80      Sawtooth 9676 23.9    N/A    N/A    N/A    *   *     University Camp 10360 16.6    17.8    19.9    May 07 93    83      Wild Basin 9439 18.1    18.3(15) 18.6(15) Apr 25(15) 99    97      Willow Park 10732 18.2    18.4    21.0    Apr 29 99    87    Basin Index (%) 98    LARAMIE AND NORTH PLATTE RIVER BASINS   Arapaho Ridge 10976 22.7    23.2(18) 25.2(18) May 01(18) 98    90      Blackhall Mtn 9839 33.3    32.9(11) 34.6(11) Apr 27(11) 101    96      Columbine 9167 23.9    21.8    24.6    Apr 05 110    97      Deadman Hill 10239 21.1    17.5    21.8    May 04 121    97      Joe Wright 10158 21.4    22.0    24.0    May 05 97    89      Never Summer 10323 21.8    21.7(18) 23.8(18) May 11(18) 100    92      Rawah 9069 11.5    10.8(18) 12.2(18) Apr 07(18) 106    94      Roach 9740 14.0    16.2    17.5    Apr 25 86    80      Tower 10620 43.8    45.2    49.0    May 07 97    89      Whiskey Park 9020 30.6    26.3    30.8    Apr 17 116    99      Willow Creek Pass 9523 15.8    14.4    16.4    May 03 110    96      Zirkel 9338 23.2    25.5(18) 28.5(18) Apr 07(18) 91    81    Basin Index (%) 102    YAMPA AND WHITE RIVER BASINS   Battle Mountain 7498 6.2    6.6    12.6    Mar 27 94    49      Bear River 9112 11.9    11.7(16) 12.0(16) Apr 21(16) 102    99      Bison Lake 10964 25.6    25.3    26.9    Apr 29 101    95      Buffalo Park 9249 14.9    13.9(25) 14.9(25) Apr 14(25) 107    100      Burro Mountain 9317 11.8    14.4    16.6    Apr 13 82    71      Columbine 9167 23.9    21.8    24.6    Apr 05 110    97      Crosho 8973 11.5    9.4    12.6    Apr 05 122    91      Divide Peak 8730 18.7    19.4    21.4    Apr 15 96    87      Dry Lake 8271 23.6    18.1    22.3    Apr 04 130    106      Elk River 8739 15.2    15.6    19.4    Apr 05 97    78      Elkhead Divide 8800 21.2    N/A    N/A    N/A    *   *     Little Snake River 8928 27.8    24.9(16) 29.0(16) Apr 09(16) 112    96      Lost Dog 9327 24.8    21.8(22) 24.5(22) Apr 10(22) 114    101      Lynx Pass 8919 7.8    8.7    11.5    Apr 04 90    68      Old Battle 9860 34.2    33.4    38.8    May 05 102    88      Rabbit Ears 9411 28.9    25.4    27.9    Apr 21 114    104      Ripple Creek 10350 28.4    26.9    29.3    Apr 25 106    97      Sage Creek Basin 7850 9.5    8.5(19) 14.8(19) Apr 03(19) 112    64      Sandstone RS 8152 13.0    10.2    14.2    Apr 05 127    92      Tower 10620 43.8    45.2    49.0    May 07 97    89      Trapper Lake 9759 10.3    N/A    N/A    N/A    *   *     Whiskey Park 9020 30.6    26.3    30.8    Apr 17 116    99    Basin Index (%) 106    ARKANSAS RIVER BASIN   Apishapa 10027 0.6    1.6    7.6    Mar 16 38    8      Brumley 10594 11.9    11.1    11.8    Apr 19 107    101      Fremont Pass 11326 -M    18.1    20.8    May 11 *   *     Glen Cove 11391 9.2    5.1(16) 5.7(16) Apr 23(16) 180    161      Hayden Pass 10699 12.6    14.2(13) 16.3(13) Apr 18(13) 89    77      Medano Pass 9668 0.0    0.1(25) 7.4(25) Mar 09(25) 0*   0*     Porphyry Creek 10788 18.3    15.0    17.0    Apr 15 122    108      Saint Elmo 10450 10.2    9.9(13) 11.5(13) Apr 09(13) 103    89      South Colony 10868 15.0    18.9(29) 20.9(29) Apr 23(29) 79    72      Ute Creek 10734 7.4    11.8(20) 12.4(20) Apr 04(20) 63    60      Whiskey Ck 10290 6.6    9.2    11.1    Apr 01 72    59    Basin Index (%) 95    UPPER RIO GRANDE BASIN   Beartown 11600 21.0    21.2    23.2    Apr 17 99    91      Cochetopa Pass 10061 2.4    0.4(16) 4.8(16) Mar 29(16) 600*   50*     Culebra #2 10562 11.4    11.7    14.0    Apr 05 97    81      Cumbres Trestle 10035 21.8    22.9    26.2    Apr 06 95    83      Grayback 11626 4.7    N/A    N/A    N/A    *   *     Hayden Pass 10699 12.6    14.2(13) 16.3(13) Apr 18(13) 89    77      Lily Pond 11069 12.8    11.2    14.8    Apr 04 114    86      Medano Pass 9668 0.0    0.1(25) 7.4(25) Mar 09(25) 0*   0*     Middle Creek 11269 15.4    18.1    19.2    Apr 15 85    80      Moon Pass 11128 5.6    5.5(12) 6.8(12) Apr 08(12) 102    82      North Costilla 10598 0.0    1.8    7.0    Mar 20 0    0      San Antonio Sink 9143 3.6    N/A    N/A    N/A    *   *     Sargents Mesa 11499 9.6    10.0(12) 11.4(12) Apr 13(12) 96    84      Shuree 10092 0.1    0.0(10) 6.0(10) Mar 08(10) *   2*     Slumgullion 11560 11.1    14.2    15.0    Apr 21 78    74      Trinchera 10922 9.1    8.8    11.2    Apr 05 103    81      Upper Rio Grande 9379 4.6    0.8    6.6    Mar 18 575    70      Ute Creek 10734 7.4    11.8(20) 12.4(20) Apr 04(20) 63    60      Wager Gulch 11132 9.2    N/A    N/A    N/A    *   *     Wolf Creek Summit 10957 25.7    31.7    35.5    Apr 29 81    72    Basin Index (%) 93    SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS   Beartown 11600 21.0    21.2    23.2    Apr 17 99    91      Black Mesa 11564 19.5    N/A    N/A    N/A    *   *     Cascade 8880 -M    0.9    12.7    Mar 10 *   *     Cascade #2 9012 0.1    0.0    10.4    Mar 06 *   1*     Columbine Pass 9171 12.4    11.6    18.0    Mar 26 107    69      Columbus Basin 10781 22.8    23.8(26) 25.8(26) Apr 17(26) 96    88      El Diente Peak 10217 11.6    11.6    14.6    Apr 04 100    79      Lizard Head Pass 10193 13.6    13.8    15.2    Apr 05 99    89      Lone Cone 9755 8.4    9.6    15.2    Apr 01 88    55      Mancos 10044 10.2    8.6(26) 16.3(26) Mar 23(26) 119    63      Mineral Creek 10046 11.3    13.6    15.6    Apr 09 83    72      Molas Lake 10631 13.4    20.4    22.0    Apr 11 66    61      Red Mountain Pass 11080 21.0    23.6    25.0    Apr 25 89    84      Scotch Creek 9195 6.2    4.0    12.0    Mar 18 155    52      Sharkstooth 10747 15.8    17.4(16) 18.8(16) Apr 12(16) 91    84      Spud Mountain 10674 15.3    21.2    25.6    Apr 04 72    60      Stump Lakes 11248 18.3    17.6    18.8    Apr 22 104    97      Upper San Juan 10140 22.4    28.6    29.7    Apr 09 78    75      Vallecito 10782 13.9    12.3    14.8    Apr 05 113    94      Weminuche Creek 10749 14.2    11.8(10) 16.4(10) Mar 28(10) 120    87      Wolf Creek Summit 10957 25.7    31.7    35.5    Apr 29 81    72    Basin Index (%) 92

-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.