Wyoming 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 Saturday, April 20, 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 SNAKE RIVER   Base Camp 7060 13.5    14.6    17.8    Apr 02 92    76      Blind Bull Sum 8650 24.4    25.4    26.1    May 03 96    93      Cottonwood Creek 7670 18.0    20.6    22.6    Apr 10 87    80      East Rim Divide 7930 3.4    9.4    11.1    Apr 11 36    31      Grand Targhee 9260 41.0    46.6(14) 48.8(14) May 01(14) 88    84      Granite Creek 6770 12.2    12.5    16.4    Apr 03 98    74      Grassy Lake 7265 27.3    32.9    34.2    Apr 15 83    80      Gros Ventre Summit 8750 11.3    13.2    13.6    Apr 23 86    83      Gunsight Pass 9820 13.2    13.6(22) 13.8(22) Apr 29(22) 97    96      Lewis Lake Divide 7850 30.8    33.3    33.4    Apr 20 92    92      Loomis Park 8240 9.6    13.4    16.2    Apr 09 72    59      Phillips Bench 8200 24.2    26.6    28.5    Apr 21 91    85      Salt River Summit 7640 12.4    11.2    13.6    Apr 07 111    91      Snake River Station 6920 13.3    15.3    18.0    Apr 03 87    74      Somsen Ranch 6800 12.0    7.2    12.8    Mar 28 167    94      Spring Creek Divide 9000 24.3    25.3    26.0    Apr 27 96    93      Thumb Divide 7980 16.2    16.7    17.7    Apr 13 97    92      Togwotee Pass 9580 20.2    24.9    26.6    May 03 81    76      Triple Peak 8500 20.5    21.8    24.4    Apr 15 94    84      Two Ocean Plateau 9240 29.8    32.3    34.9    May 03 92    85      Willow Creek 8080 32.5    28.8    31.4    Apr 14 113    104      Younts Peak 8350 13.2    15.2(28) 15.6(28) Apr 25(28) 87    85    Basin Index (%) 92    MADISON HEADWATERS IN WYOMING   Black Bear 8170 33.4    39.6    41.4    Apr 29 84    81      Canyon 7870 10.6    N/A    N/A    N/A    *   *     Madison Plateau 7750 20.7    23.5    24.7    Apr 24 88    84      West Yellowstone 6700 5.8    6.9    11.6    Apr 03 84    50      Whiskey Creek 6800 12.7    15.8    16.5    Apr 17 80    77    Basin Index (%) 85    YELLOWSTONE HEADWATERS IN WYOMING   Beartooth Lake 9360 16.6    23.7    25.2    May 07 70    66      Canyon 7870 10.6    N/A    N/A    N/A    *   *     Evening Star 9200 20.9    27.1    29.3    May 01 77    71      Fisher Creek 9100 23.1    35.4    37.0    May 05 65    62      Monument Peak 8850 15.0    22.1    23.4    Apr 27 68    64      Northeast Entrance 7350 3.5    7.3    10.2    Apr 04 48    34      Parker Peak 9400 21.5    23.3    25.9    May 04 92    83      Sylvan Lake 8420 15.0    20.9    22.0    Apr 23 72    68      Thumb Divide 7980 16.2    16.7    17.7    Apr 13 97    92      Two Ocean Plateau 9240 29.8    32.3    34.9    May 03 92    85      White Mill 8700 18.0    26.0    27.4    May 05 69    66      Wolverine 7650 5.1    8.0    11.8    Mar 30 64    43    Basin Index (%) 76    WIND RIVER   Burroughs Creek 8750 8.4    N/A    N/A    N/A    *   *     Castle Creek 8400 3.6    4.5(10) 7.9(10) Apr 03(10) 80    46      Cold Springs 9630 5.4    6.2    8.3    Apr 09 87    65      Deer Park 9700 17.5    16.0(22) 16.6(22) Apr 25(22) 109    105      Hobbs Park 10100 16.0    15.8    18.1    May 06 101    88      Kirwin 9550 13.1    12.0    13.2    May 01 109    99      Little Warm 9370 9.6    10.4    10.6    Apr 17 92    91      South Pass 9040 14.1    15.6    16.6    Apr 22 90    85      St. Lawrence Alt 8620 2.8    N/A    N/A    N/A    *   *     Togwotee Pass 9580 20.2    24.9    26.6    May 03 81    76      Townsend Creek 8700 9.0    9.7    10.6    Apr 19 93    85    Basin Index (%) 94    BIGHORN BASIN   Bald Mtn. 9380 14.7    19.8    22.6    May 07 74    65      Bear Trap Meadow 8200 5.2    4.0    7.4    Apr 07 130    70      Bone Springs Div 9350 14.2    17.6    19.2    May 05 81    74      Grave Springs 8550 7.4    8.4(28) 10.0(28) Apr 19(28) 88    74      Kirwin 9550 13.1    12.0    13.2    May 01 109    99      Marquette 8760 14.2    8.1    9.9    May 04 175    143      Middle Powder 7760 11.7    11.8    13.2    Apr 23 99    89      Owl Creek 8975 4.6    4.2    6.4    Apr 12 110    72      Powder River Pass 9480 6.1    11.0    12.2    Apr 19 55    50      Shell Creek 9580 14.2    16.8    18.2    May 05 85    78      Timber Creek 7950 7.0    5.4    6.0    Apr 17 130    117    Basin Index (%) 94    SHOSHONE RIVER   Blackwater 9780 23.1    25.1    26.8    May 09 92    86      Evening Star 9200 20.9    27.1    29.3    May 01 77    71      Marquette 8760 14.2    8.1    9.9    May 04 175    143      Sylvan Lake 8420 15.0    20.9    22.0    Apr 23 72    68      Sylvan Road 7120 0.3    9.8    12.3    Apr 07 3    2      Younts Peak 8350 13.2    15.2(28) 15.6(28) Apr 25(28) 87    85    Basin Index (%) 82    POWDER RIVER   Bear Trap Meadow 8200 5.2    4.0    7.4    Apr 07 130    70      Cloud Peak Reservoir 9860 12.7    15.8    18.0    May 05 80    71      Grave Springs 8550 7.4    8.4(28) 10.0(28) Apr 19(28) 88    74      Hansen Sawmill 8360 4.4    5.2    7.0    Apr 13 85    63      Middle Powder 7760 11.7    11.8    13.2    Apr 23 99    89      Powder River Pass 9480 6.1    11.0    12.2    Apr 19 55    50      Soldier Park 8720 2.3    6.7(10) 8.4(10) Apr 17(10) 34    27    Basin Index (%) 79    TONGUE RIVER   Big Goose 7990 6.9    8.8(22) 10.1(22) Apr 25(22) 78    68      Bone Springs Div 9350 14.2    17.6    19.2    May 05 81    74      Burgess Junction 7880 9.4    11.7    13.0    May 03 80    72      Dome Lake 8880 -M    11.6    13.5    Apr 27 *   *     Little Goose 8870 9.3    10.8(10) 12.2(10) Apr 27(10) 86    76      Sucker Creek 8880 10.6    13.0    14.9    May 03 82    71      Tie Creek 6870 0.8    4.0(26) 6.6(26) Apr 05(26) 20    12    Basin Index (%) 78    BELLE FOURCHE   Blind Park 6890 -M    4.4    8.1    Mar 30 *   *     Cole Canyon 5910 0.0    2.6(20) 6.3(20) Apr 03(20) 0    0      North Rapid Creek 6130 0.8    4.0(24) 7.4(24) Apr 02(24) 20    11    Basin Index (%) 12    CHEYENNE RIVER BASIN   Blind Park 6890 -M    4.4    8.1    Mar 30 *   *     North Rapid Creek 6130 0.8    4.0(24) 7.4(24) Apr 02(24) 20    11    Basin Index (%) 20    UPPER N. PLATTE   Arapaho Ridge 10976 22.6    23.4(18) 25.2(18) May 01(18) 97    90      Blackhall Mtn 9839 33.6    32.9(11) 34.6(11) Apr 27(11) 102    97      Cinnabar Park 9707 19.9    20.0(17) 22.4(17) Apr 19(17) 100    89      Columbine 9167 22.6    21.2    24.6    Apr 05 107    92      Divide Peak 8730 18.3    19.4    21.4    Apr 15 94    86      Joe Wright 10158 21.3    21.7    24.0    May 05 98    89      Laprele Creek 8390 6.6    8.2    10.4    Apr 05 80    63      Med Bow 10512 42.0    N/A    N/A    N/A    *   *     Never Summer 10323 22.0    21.9(18) 23.8(18) May 11(18) 100    92      North French Creek 10153 28.2    31.4    34.2    Apr 30 90    82      Old Battle 9860 34.1    33.2    38.8    May 05 103    88      Rawah 9069 11.3    10.4(18) 12.2(18) Apr 07(18) 109    93      Sage Creek Basin 7850 8.0    6.5(19) 14.8(19) Apr 03(19) 123    54      Sand Lake 10098 32.1    30.2    33.1    May 05 106    97      South Brush Creek 8495 9.4    8.9    12.4    Apr 03 106    76      Tower 10620 -M    46.2    49.0    May 07 *   *     Webber Springs 9260 22.0    22.2    23.9    Apr 15 99    92      Whiskey Park 9020 30.3    26.2    30.8    Apr 17 116    98      Willow Creek Pass 9523 15.7    14.6    16.4    May 03 108    96      Zirkel 9338 22.7    25.3(18) 28.5(18) Apr 07(18) 90    80    Basin Index (%) 101    SWEETWATER   Deer Park 9700 17.5    16.0(22) 16.6(22) Apr 25(22) 109    105      Larsen Creek 9000 5.5    8.6(10) 11.0(10) Apr 03(10) 64    50      South Pass 9040 14.1    15.6    16.6    Apr 22 90    85    Basin Index (%) 92    LOWER N. PLATTE   Casper Mtn. 7920 10.8    14.4    16.0    Apr 19 75    68      Laprele Creek 8390 6.6    8.2    10.4    Apr 05 80    63      Reno Hill 8430 10.2    14.1    16.3    Apr 21 72    63      Windy Peak 7915 8.0    6.8    8.4    Apr 08 118    95    Basin Index (%) 82    LARAMIE RIVER   Brooklyn Lake 10250 24.4    22.0    25.4    Apr 25 111    96      Cinnabar Park 9707 19.9    20.0(17) 22.4(17) Apr 19(17) 100    89      Crow Creek 8335 -M    2.9(17) 7.4(17) Apr 01(17) *   *     Deadman Hill 10239 21.1    17.6    21.8    May 04 120    97      Rawah 9069 11.3    10.4(18) 12.2(18) Apr 07(18) 109    93      Roach 9740 14.3    16.6    17.5    Apr 25 86    82      Windy Peak 7915 8.0    6.8    8.4    Apr 08 118    95    Basin Index (%) 106    S. PLATTE   Crow Creek 8335 -M    2.9(17) 7.4(17) Apr 01(17) *   *   Basin Index (%) *   LITTLE SNAKE RIVER   Battle Mountain 7498 5.1    5.8    12.6    Mar 27 88    40      Divide Peak 8730 18.3    19.4    21.4    Apr 15 94    86      Elk River 8739 14.1    15.2    19.4    Apr 05 93    73      Elkhead Divide 8800 20.8    N/A    N/A    N/A    *   *     Little Snake River 8928 27.3    24.2(16) 29.0(16) Apr 09(16) 113    94      Old Battle 9860 34.1    33.2    38.8    May 05 103    88      Sage Creek Basin 7850 8.0    6.5(19) 14.8(19) Apr 03(19) 123    54      Sandstone RS 8152 12.1    9.8    14.2    Apr 05 123    85      Whiskey Park 9020 30.3    26.2    30.8    Apr 17 116    98    Basin Index (%) 106    UPPER GREEN RIVER   Big Sandy Opening 9080 12.9    13.6    14.2    Apr 17 95    91      Blind Bull Sum 8650 24.4    25.4    26.1    May 03 96    93      East Rim Divide 7930 3.4    9.4    11.1    Apr 11 36    31      Elkhart Park G.S. 9400 -M    12.8    13.6    Apr 23 *   *     Gros Ventre Summit 8750 11.3    13.2    13.6    Apr 23 86    83      Gunsight Pass 9820 13.2    13.6(22) 13.8(22) Apr 29(22) 97    96      Indian Creek 9425 22.7    24.7    24.9    Apr 21 92    91      Kendall R.S. 7740 5.5    9.2    12.2    Apr 01 60    45      Larsen Creek 9000 5.5    8.6(10) 11.0(10) Apr 03(10) 64    50      Loomis Park 8240 9.6    13.4    16.2    Apr 09 72    59      New Fork Lake 8340 4.8    9.4    10.9    Apr 08 51    44      Pocket Creek 9360 -M    N/A    N/A    N/A    *   *     Snider Basin 8060 6.9    10.6    13.4    Apr 09 65    51      Spring Creek Divide 9000 24.3    25.3    26.0    Apr 27 96    93      Triple Peak 8500 20.5    21.8    24.4    Apr 15 94    84    Basin Index (%) 83    LOWER GREEN RIVER   Blacks Fork Jct 8869 8.1    7.1(10) 9.4(10) Apr 05(10) 114    86      Buck Pasture 9632 13.0    N/A    N/A    N/A    *   *     EF Blacks Fork GS 9360 8.5    11.0(10) 12.4(10) Apr 05(10) 77    69      Hams Fork 7840 -M    7.6    11.5    Apr 01 *   *     Henrys Fork 10182 -M    N/A    N/A    N/A    *   *     Hewinta 9500 8.0    8.2    12.7    Apr 09 98    63      Hickerson Park 9122 6.3    5.6    8.8    Apr 07 112    72      Hole-in-Rock 9168 6.0    5.9    8.0    Apr 09 102    75      Indian Creek 9425 22.7    24.7    24.9    Apr 21 92    91      Kelley R.S. 8180 14.2    14.2    15.2    Apr 09 100    93      Spirit Lk 10235 14.1    12.8(11) 14.1(11) Apr 11(11) 110    100      Steel Creek Park 10158 15.8    16.0    18.8    May 05 99    84    Basin Index (%) 98    UPPER BEAR RIVER   Bear River RS 8777 6.5    3.6(10) 10.0(10) Apr 01(10) 181    65      Bug Lake 7987 19.2    17.4    19.0    Apr 14 110    101      Burts Miller Ranch 8000 3.1    0.0(11) 6.4(11) Mar 29(11) *   48*     Chalk Creek #1 9171 -M    22.8    24.6    Apr 17 *   *     Giveout 6930 -M    2.9    8.8    Mar 20 *   *     Hayden Fork 9130 12.4    11.7    15.9    Apr 06 106    78      Kelley R.S. 8180 14.2    14.2    15.2    Apr 09 100    93      Lily Lake 9133 12.5    11.4    13.6    Apr 15 110    92      Monte Cristo 8932 29.0    26.3    29.6    Apr 17 110    98      Salt River Summit 7640 12.4    11.2    13.6    Apr 07 111    91      Spring Creek Divide 9000 24.3    25.3    26.0    Apr 27 96    93      Trial Lake 9992 29.3    22.8    24.2    Apr 25 129    121    Basin Index (%) 113

-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.