Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of FRIDAY: APRIL 19 , 2019
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 18.5 12.0 154 23.9 21.7 110
Black Bear 8170 45.8 36.8 124 48.3 39.6 122
Blind Bull Sum 8650 26.3 24.0 110 20.7 20.1 103
Cottonwood Creek 7670 22.6 18.8 120 28.6 25.7 111
East Rim Divide 7930 9.9 9.6 103 12.9 12.2 106
Grand Targhee 9260 47.9 41.9 114 34.0 32.4 105
Granite Creek 6770 17.8 11.1 160 22.8 20.2 113
Grassy Lake 7265 35.5 31.5 113 41.3 37.2 111
Gros Ventre Summit 8750 8.1 13.2 61 13.5 13.6 99
Gunsight Pass 9820 14.2 13.6 104 16.9 14.8 114
Lewis Lake Divide 7850 40.0 30.3 132 42.3 36.6 116
Phillips Bench 8200 31.8 25.7 124 34.8 29.0 120
Salt River Summit 7640 14.9 10.0 149 18.3 17.3 106
Snake River Station 6920 18.7 11.5 163 27.4 23.4 117
Spring Creek Divide 9000 24.9 23.5 106 25.6 24.6 104
Thumb Divide 7980 20.5 14.5 141 20.9 19.6 107
Togwotee Pass 9580 26.2 23.7 111 27.2 25.5 107
Two Ocean Plateau 9240 34.1 27.9 122 28.6 28.4 101
Willow Creek 8080 35.5 26.8 132 38.9 35.1 111
Younts Peak 8350 -M 15.1 * -M 16.6 *
----- -----
Basin Index (%) 121 110
MADISON-GALLATIN
Black Bear 8170 45.8 36.8 124 48.3 39.6 122
Canyon 7870 14.7 12.3 120 18.0 16.9 107
Madison Plateau 7750 32.5 22.9 142 30.9 27.4 113
West Yellowstone 6700 9.9 7.8 127 18.7 15.0 125
Whiskey Creek 6800 19.7 15.2 130 23.6 21.1 112
----- -----
Basin Index (%) 129 116
YELLOWSTONE
Beartooth Lake 9360 23.5 23.2 101 22.0 20.6 107
Burnt Mtn 5880 6.1 .0 * 15.1 14.1 107
Canyon 7870 14.7 12.3 120 18.0 16.9 107
Cole Creek 7850 18.3 16.1 114 -M 14.4 *
Evening Star 9200 28.6 24.9 115 31.5 28.6 110
Fisher Creek 9100 36.6 32.3 113 38.9 33.2 117
Northeast Entrance 7350 9.2 7.0 131 15.8 12.9 122
Parker Peak 9400 26.8 20.8 129 26.5 18.6 142
Sylvan Lake 8420 22.9 20.4 112 29.7 23.4 127
Thumb Divide 7980 20.5 14.5 141 20.9 19.6 107
Two Ocean Plateau 9240 34.1 27.9 122 28.6 28.4 101
White Mill 8700 26.7 23.6 113 23.2 24.8 94
Wolverine 7650 9.6 7.5 128 13.9 12.8 109
Younts Peak 8350 -M 15.1 * -M 16.6 *
----- -----
Basin Index (%) 120 112
WIND RIVER
Burroughs Creek 8750 12.6 -M * 15.2 -M *
Castle Creek 8400 2.6 -M * 7.0 -M *
Cold Springs 9630 7.4 4.9 151 8.8 10.8 81
Deer Park 9700 18.2 16.2 112 20.3 21.3 95
Hobbs Park 10100 17.2 14.8 116 14.1 14.7 96
Kirwin 9550 11.2 10.0 112 12.2 12.3 99
Little Warm 9370 10.5 10.2 103 10.2 13.8 74
Owl Creek 8975 3.6 4.2 86 7.2 6.7 107
South Pass 9040 16.0 15.6 103 13.8 18.5 75
St. Lawrence Alt 8620 -M 5.4 * -M 9.8 *
Togwotee Pass 9580 26.2 23.7 111 27.2 25.5 107
Townsend Creek 8700 10.8 9.6 112 12.8 13.1 98
----- -----
Basin Index (%) 111 93
BIGHORN BASIN
Bald Mtn. 9380 17.2 19.7 87 13.4 18.1 74
Bear Trap Meadow 8200 4.4 3.5 126 7.5 9.3 81
Bone Springs Div 9350 13.1 16.2 81 12.4 16.6 75
Grave Springs 8550 8.5 9.6 89 10.0 11.5 87
Kirwin 9550 11.2 10.0 112 12.2 12.3 99
Marquette 8760 8.1 -M * 10.1 -M *
Middle Powder 7760 8.3 12.5 66 9.3 12.7 73
Owl Creek 8975 3.6 4.2 86 7.2 6.7 107
Powder River Pass 9480 10.0 10.2 98 -M 13.6 *
Shell Creek 9580 13.9 15.3 91 11.3 14.8 76
Timber Creek 7950 2.5 4.9 51 7.0 8.4 83
----- -----
Basin Index (%) 87 82
SHOSHONE RIVER
Blackwater 9780 27.0 23.8 113 27.3 21.7 126
Evening Star 9200 28.6 24.9 115 31.5 28.6 110
Marquette 8760 8.1 -M * 10.1 -M *
Sylvan Lake 8420 22.9 20.4 112 29.7 23.4 127
Sylvan Road 7120 8.7 10.0 87 17.4 17.5 99
Younts Peak 8350 -M 15.1 * -M 16.6 *
----- -----
Basin Index (%) 110 116
POWDER RIVER
Bear Trap Meadow 8200 4.4 3.5 126 7.5 9.3 81
Cloud Peak Reservoir 9860 12.3 15.7 78 11.9 14.7 81
Grave Springs 8550 8.5 9.6 89 10.0 11.5 87
Hansen Sawmill 8360 5.8 5.0 116 8.4 9.5 88
Middle Powder 7760 8.3 12.5 66 9.3 12.7 73
Powder River Pass 9480 10.0 10.2 98 -M 13.6 *
Soldier Park 8720 3.6 -M * 7.7 -M *
----- -----
Basin Index (%) 87 82
TONGUE RIVER
Big Goose 7990 8.4 9.4 89 10.7 12.5 86
Bone Springs Div 9350 13.1 16.2 81 12.4 16.6 75
Burgess Junction 7880 8.9 12.4 72 9.2 13.4 69
Dome Lake 8880 7.9 11.8 67 9.1 14.8 61
Little Goose 8870 9.7 -M * 8.4 -M *
Sucker Creek 8880 11.1 12.7 87 10.5 15.6 67
Tie Creek 6870 3.6 4.5 80 11.3 12.7 89
----- -----
Basin Index (%) 79 74
BELLE FOURCHE
Blind Park 6890 1.9 4.2 45 8.0 12.8 62
Cole Canyon 5910 4.3 2.2 195 13.0 10.3 126
----- -----
Basin Index (%) 97 91
CHEYENNE RIVER BASIN
Blind Park 6890 1.9 4.2 45 8.0 12.8 62
North Rapid Creek 6130 3.2 4.4 73 7.8 10.6 74
----- -----
Basin Index (%) 59 68
UPPER N. PLATTE
Arapaho Ridge 10960 26.7 21.4 125 27.2 24.3 112
Blackhall Mtn 9820 34.7 -M * 35.4 -M *
Columbine 9160 26.4 20.7 128 30.1 26.8 112
Divide Peak 8880 21.6 19.1 113 24.9 22.7 110
Joe Wright 10120 23.4 22.2 105 31.3 27.6 113
Laprele Creek 8375 12.4 8.3 149 15.4 13.5 114
Med Bow 10500 40.3 -M * 36.4 -M *
Never Summer 10280 23.2 20.6 113 20.0 -M *
North French Creek 10130 31.1 32.0 97 31.6 28.3 112
Old Battle 10000 38.4 32.5 118 38.5 36.8 105
Rawah 9020 11.4 8.6 133 18.2 15.5 117
Sage Creek Basin 7850 16.4 6.6 248 17.0 15.2 112
Sand Lake 10050 31.4 30.4 103 25.9 26.6 97
South Brush Creek 8440 8.6 9.9 87 12.9 16.3 79
Tower 10500 52.0 47.8 109 48.6 41.8 116
Webber Springs 9250 26.5 22.3 119 32.8 28.2 116
Whiskey Park 8950 31.7 26.0 122 34.0 29.5 115
Willow Creek Pass 9540 17.0 12.9 132 18.4 14.3 129
Zirkel 9340 33.9 22.8 149 39.6 29.7 133
----- -----
Basin Index (%) 119 112
SWEETWATER
Deer Park 9700 18.2 16.2 112 20.3 21.3 95
Larsen Creek 9000 9.7 10.4 93 15.5 -M *
South Pass 9040 16.0 15.6 103 13.8 18.5 75
----- -----
Basin Index (%) 104 86
LOWER N. PLATTE
Casper Mtn. 7900 15.5 14.5 107 13.6 16.4 83
Laprele Creek 8375 12.4 8.3 149 15.4 13.5 114
Reno Hill 8400 17.4 14.0 124 18.8 16.9 111
Windy Peak 7900 9.3 6.7 139 12.3 11.5 107
----- -----
Basin Index (%) 126 103
LARAMIE RIVER
Brooklyn Lake 10240 25.4 22.1 115 27.2 22.6 120
Cinnabar Park 9574 20.8 20.3 102 24.6 25.3 97
Crow Creek 8330 3.8 1.1 345 11.5 12.0 96
Deadman Hill 10220 22.7 16.8 135 21.1 18.7 113
Rawah 9020 11.4 8.6 133 18.2 15.5 117
Roach 9700 17.4 16.5 105 22.8 20.4 112
Windy Peak 7900 9.3 6.7 139 12.3 11.5 107
----- -----
Basin Index (%) 120 109
S. PLATTE
Black Mountain 8920 12.2 -M * 14.4 -M *
Crow Creek 8330 3.8 1.1 345 11.5 12.0 96
Deadman Hill 10220 22.7 16.8 135 21.1 18.7 113
----- -----
Basin Index (%) 148 106
LITTLE SNAKE RIVER
Battle Mountain 7440 7.6 4.9 155 17.2 16.0 108
Divide Peak 8880 21.6 19.1 113 24.9 22.7 110
Elk River 8700 17.6 15.8 111 20.7 21.1 98
Little Snake River 8915 29.0 24.7 117 39.3 31.2 126
Old Battle 10000 38.4 32.5 118 38.5 36.8 105
Sage Creek Basin 7850 16.4 6.6 248 17.0 15.2 112
Sandstone RS 8150 13.0 10.4 125 19.2 19.4 99
Whiskey Park 8950 31.7 26.0 122 34.0 29.5 115
----- -----
Basin Index (%) 125 110
UPPER GREEN RIVER
Big Sandy Opening 9080 14.4 12.7 113 15.7 14.0 112
Blind Bull Sum 8650 26.3 24.0 110 20.7 20.1 103
East Rim Divide 7930 9.9 9.6 103 12.9 12.2 106
Elkhart Park G.S. 9400 14.0 11.9 118 14.9 14.0 106
Gros Ventre Summit 8750 8.1 13.2 61 13.5 13.6 99
Gunsight Pass 9820 14.2 13.6 104 16.9 14.8 114
Indian Creek 9425 25.1 23.2 108 19.9 23.5 85
Kendall R.S. 7740 9.8 8.8 111 12.5 14.7 85
Loomis Park 8240 16.1 13.1 123 18.3 17.9 102
New Fork Lake 8340 10.0 9.0 111 10.4 11.2 93
Pocket Creek 9360 15.9 -M * 16.4 -M *
Snider Basin 8060 9.9 10.9 91 14.3 14.7 97
Spring Creek Divide 9000 24.9 23.5 106 25.6 24.6 104
Triple Peak 8500 25.6 19.3 133 27.5 26.2 105
----- -----
Basin Index (%) 108 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.5 -M * 14.6 -M *
Buck Pasture 9632 17.4 -M * 21.7 -M *
EF Blacks Fork GS 9360 12.9 -M * 13.3 -M *
Hams Fork 7840 8.9 7.1 125 12.3 11.9 103
Hewinta 9500 12.9 8.3 155 16.8 14.9 113
Hickerson Park 9122 9.9 5.6 177 13.1 11.0 119
Hole-in-Rock 9168 7.2 6.0 120 12.1 10.5 115
Indian Creek 9425 25.1 23.2 108 19.9 23.5 85
Kelley R.S. 8180 15.7 12.9 122 17.4 18.8 93
Spirit Lk 10235 17.8 -M * 18.9 -M *
Steel Creek Park 10158 16.4 16.2 101 21.0 17.6 119
----- -----
Basin Index (%) 121 104
UPPER BEAR RIVER
Bear River RS 8777 10.4 -M * 17.0 -M *
Bug Lake 7987 24.5 17.6 139 25.4 20.2 126
Burts Miller Ranch 8000 4.9 -M * 9.9 -M *
Chalk Creek #1 9171 29.1 24.7 118 32.5 26.6 122
Hayden Fork 9130 16.6 12.2 136 25.5 22.3 114
Kelley R.S. 8180 15.7 12.9 122 17.4 18.8 93
Lily Lake 9133 14.8 11.0 135 18.2 18.2 100
Monte Cristo 8932 37.7 27.6 137 34.7 27.2 128
Salt River Summit 7640 14.9 10.0 149 18.3 17.3 106
Spring Creek Divide 9000 24.9 23.5 106 25.6 24.6 104
----- -----
Basin Index (%) 128 113
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
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 for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.
----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
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 for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.