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 MONDAY: OCTOBER 30 , 2023
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 .3 .2 150* 3.0 2.1 143
Blind Bull Sum 8650 .6 1.2 50* 1.8 2.0 90
Cottonwood Creek 7670 .8 .9 89* 3.7 2.6 142
East Rim Divide 7930 -M .1 * 1.3 1.3 100
Grand Targhee 9260 3.2 4.2 76* 5.8 4.4 132
Granite Creek 6770 .0 .0 * 1.5 1.8 83
Grassy Lake 7265 .6 .8 75* 4.1 3.3 124
Gros Ventre Summit 8750 .3 1.4 21 2.8 1.8 156
Gunsight Pass 9820 1.2 .8 150* 3.6 2.2 164
Lewis Lake Divide 7850 2.2 .7 314* 4.5 3.0 150
Loomis Park 8240 .2 .4 50* 1.8 1.8 100
Phillips Bench 8200 .9 1.1 82* 3.2 2.5 128
Salt River Summit 7640 .0 .0 * .6 1.8 33
Snake River Station 6920 .5 .2 250* 3.4 2.4 142
Somsen Ranch 6800 .5 .0 * 2.8 1.8 156
Spring Creek Divide 9000 -M 1.2 * 2.1 2.2 95
Thumb Divide 7980 1.6 .2 800* 3.0 2.2 136
Togwotee Pass 9580 1.6 2.4 67* 3.1 3.0 103
Triple Peak 8500 .3 1.0 30* 1.7 2.0 85
Two Ocean Plateau 9240 2.0 3.1 65* 4.2 2.8 150
Willow Creek 8080 .4 .7 57* 4.4 3.6 122
Younts Peak 8350 -M 1.4 * -M 2.0 *
----- -----
Basin Index (%) 89* 123
MADISON HEADWATERS IN WYOMING
Black Bear 8170 3.1 2.4 129* 5.9 3.8 155
Canyon 7870 1.0 -M * 2.3 -M *
Madison Plateau 7750 1.6 1.2 133* 4.0 2.7 148
West Yellowstone 6700 .6 .0 * 2.8 1.4 200
Whiskey Creek 6800 .6 .2 300* 3.7 2.0 185
----- -----
Basin Index (%) 155* 166
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 2.4 2.5 96 3.1 2.4 129
Canyon 7870 1.0 -M * 2.3 -M *
Evening Star 9200 2.5 2.2 114* 5.9 3.3 179
Fisher Creek 9100 2.1 2.8 75* 3.9 3.4 115
Monument Peak 8850 1.6 1.8 89* 4.4 2.8 157
Northeast Entrance 7350 .3 .0 * 2.2 1.8 122
Parker Peak 9400 2.0 2.3 87* 4.5 2.6 173
Sylvan Lake 8420 -M 1.4 * -M 3.0 *
Thumb Divide 7980 1.6 .2 800* 3.0 2.2 136
Two Ocean Plateau 9240 2.0 3.1 65* 4.2 2.8 150
White Mill 8700 1.9 1.8 106* 3.2 2.6 123
Wolverine 7650 .6 .0 * 4.2 1.9 221
----- -----
Basin Index (%) 102* 150
WIND RIVER
Burroughs Creek 8750 .4 -M * 1.9 -M *
Castle Creek 8400 .6 .0 * 1.8 1.2 150
Cold Springs 9630 .5 .7 71* 2.6 1.8 144
Deer Park 9700 .9 1.4 64* 2.6 2.3 113
Hobbs Park 10100 2.9 1.9 153 4.2 2.0 210
Kirwin 9550 3.5 1.6 219 4.9 1.9 258
Little Warm 9370 1.1 1.1 100 2.9 1.8 161
South Pass 9040 .6 1.0 60* 2.1 1.8 117
St. Lawrence Alt 8620 .0 -M * 2.4 -M *
Togwotee Pass 9580 1.6 2.4 67* 3.1 3.0 103
Townsend Creek 8700 .1 .8 12* 3.5 2.0 175
----- -----
Basin Index (%) 108* 156
BIGHORN BASIN
Bald Mtn. 9380 2.9 2.8 104 3.7 2.8 132
Bear Trap Meadow 8200 .8 .4 200* 3.0 1.8 167
Bone Springs Div 9350 2.5 2.2 114 4.6 2.6 177
Grave Springs 8550 .0 .5 0* 2.2 1.8 122
Kirwin 9550 3.5 1.6 219 4.9 1.9 258
Marquette 8760 3.8 .8 475* 7.1 2.0 355
Middle Powder 7760 .1 .7 14* 3.2 2.0 160
Owl Creek 8975 .2 .6 33 2.1 1.3 162
Powder River Pass 9480 .5 1.5 33 3.0 2.2 136
Shell Creek 9580 3.6 2.8 129 4.6 2.3 200
Timber Creek 7950 1.7 .2 850* 5.3 1.8 294
----- -----
Basin Index (%) 139 194
SHOSHONE RIVER
Blackwater 9780 3.8 2.8 136 4.4 2.6 169
Evening Star 9200 2.5 2.2 114* 5.9 3.3 179
Marquette 8760 3.8 .8 475* 7.1 2.0 355
Sylvan Lake 8420 -M 1.4 * -M 3.0 *
Sylvan Road 7120 .9 .2 450* 4.8 2.2 218
Younts Peak 8350 -M 1.4 * -M 2.0 *
----- -----
Basin Index (%) 183* 220
POWDER RIVER
Bear Trap Meadow 8200 .8 .4 200* 3.0 1.8 167
Cloud Peak Reservoir 9860 3.3 1.8 183 5.7 2.5 228
Grave Springs 8550 .0 .5 0* 2.2 1.8 122
Hansen Sawmill 8360 .4 .1 400* 2.6 1.8 144
Middle Powder 7760 .1 .7 14* 3.2 2.0 160
Powder River Pass 9480 .5 1.5 33 3.0 2.2 136
Soldier Park 8720 .0 .0 * 3.9 1.6 244
----- -----
Basin Index (%) 102* 172
TONGUE RIVER
Big Goose 7990 .4 .6 67* 4.9 2.2 223
Bone Springs Div 9350 2.5 2.2 114 4.6 2.6 177
Burgess Junction 7880 1.4 1.0 140* 5.3 2.4 221
Dome Lake 8880 2.0 1.4 143 5.0 2.6 192
Little Goose 8870 1.5 .2 750* 5.0 2.1 238
Sucker Creek 8880 2.4 1.6 150 5.7 2.4 238
Tie Creek 6870 .6 .0 * 6.4 2.4 267
----- -----
Basin Index (%) 154* 221
BELLE FOURCHE
Blind Park 6890 .4 .0 * 1.6 1.6 100
Cole Canyon 5910 .1 .0 * 1.4 1.6 88
North Rapid Creek 6130 .0 .0 * 2.6 1.4 186
----- -----
Basin Index (%) * 122
CHEYENNE RIVER BASIN
Blind Park 6890 .4 .0 * 1.6 1.6 100
North Rapid Creek 6130 .0 .0 * 2.6 1.4 186
----- -----
Basin Index (%) * 140
UPPER N. PLATTE
Arapaho Ridge 10976 .2 2.6 8 1.7 3.2 53
Blackhall Mtn 9839 .9 2.3 39* 3.2 3.7 86
Cinnabar Park 9707 .4 1.4 29* 1.4 2.8 50
Columbine 9167 .0 .4 0* 1.3 3.0 43
Divide Peak 8730 .4 .7 57* 3.3 2.9 114
Joe Wright 10158 .9 1.4 64* 2.9 3.7 78
Laprele Creek 8390 .1 .3 33* 2.9 1.6 181
Med Bow 10512 1.5 -M * 2.8 -M *
Never Summer 10323 2.3 2.2 105* 2.0 3.1 65
North French Creek 10153 .1 2.3 4* 2.1 3.4 62
Old Battle 9860 .7 2.0 35* 2.2 4.1 54
Rawah 9069 .3 .4 75* 2.7 3.0 90
Sage Creek Basin 7850 .4 .0 * 2.0 2.0 100
Sand Lake 10098 2.1 2.3 91* 2.2 3.0 73
South Brush Creek 8495 -M .4 * 1.4 2.2 64
Tower 10620 1.0 2.1 48* 2.9 3.9 74
Webber Springs 9260 .8 .9 89* 1.5 3.2 47
Whiskey Park 9020 .7 .6 117* 2.2 2.9 76
Willow Creek Pass 9523 1.7 1.4 121* 2.0 2.2 91
Zirkel 9338 .6 .6 100* 1.8 3.3 55
----- -----
Basin Index (%) 57* 73
SWEETWATER
Deer Park 9700 .9 1.4 64* 2.6 2.3 113
Larsen Creek 9000 -M .0 * 1.7 1.8 94
South Pass 9040 .6 1.0 60* 2.1 1.8 117
----- -----
Basin Index (%) 62* 108
LOWER N. PLATTE
Casper Mtn. 7920 1.4 .8 175* 5.5 2.3 239
Laprele Creek 8390 .1 .3 33* 2.9 1.6 181
Reno Hill 8430 .4 1.0 40* 4.4 2.0 220
Windy Peak 7915 .0 .2 0* 1.9 1.5 127
----- -----
Basin Index (%) 83* 199
LARAMIE RIVER
Brooklyn Lake 10250 .2 1.0 20* 1.2 2.2 55
Cinnabar Park 9707 .4 1.4 29* 1.4 2.8 50
Crow Creek 8335 .0 .1 0* 1.7 1.9 89
Deadman Hill 10239 1.7 2.2 77 1.8 2.8 64
Rawah 9069 .3 .4 75* 2.7 3.0 90
Roach 9740 .6 1.2 50* 1.8 2.6 69
Windy Peak 7915 .0 .2 0* 1.9 1.5 127
----- -----
Basin Index (%) 49* 74
S. PLATTE
Crow Creek 8335 .0 .1 0* 1.7 1.9 89
----- -----
Basin Index (%) 0* 89
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 2.0 2.0 100
Divide Peak 8730 .4 .7 57* 3.3 2.9 114
Elk River 8739 .8 .2 400* 1.6 2.4 67
Elkhead Divide 8800 .1 -M * -M -M *
Little Snake River 8928 .3 .0 * 2.4 4.2 57
Old Battle 9860 .7 2.0 35* 2.2 4.1 54
Sage Creek Basin 7850 .4 .0 * 2.0 2.0 100
Sandstone RS 8152 .1 .0 * 1.2 2.2 55
Whiskey Park 9020 .7 .6 117* 2.2 2.9 76
----- -----
Basin Index (%) 97* 74
UPPER GREEN RIVER
Big Sandy Opening 9080 .4 1.2 33* 1.9 1.6 119
Blind Bull Sum 8650 .6 1.2 50* 1.8 2.0 90
East Rim Divide 7930 -M .1 * 1.3 1.3 100
Elkhart Park G.S. 9400 .4 .8 50* 2.6 1.8 144
Gros Ventre Summit 8750 .3 1.4 21 2.8 1.8 156
Gunsight Pass 9820 1.2 .8 150* 3.6 2.2 164
Indian Creek 9425 .5 1.4 36* 2.0 2.2 91
Kendall R.S. 7740 -M .2 * 2.3 1.6 144
Larsen Creek 9000 -M .0 * 1.7 1.8 94
Loomis Park 8240 .2 .4 50* 1.8 1.8 100
New Fork Lake 8340 -M .3 * .4 1.3 31
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .2 * .7 1.4 50
Spring Creek Divide 9000 -M 1.2 * 2.1 2.2 95
Triple Peak 8500 .3 1.0 30* 1.7 2.0 85
----- -----
Basin Index (%) 48* 107
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 2.0 1.5 133
Buck Pasture 9632 .2 -M * 2.0 -M *
EF Blacks Fork GS 9360 .0 .0 * 1.9 1.6 119
Hams Fork 7840 -M .0 * .9 1.4 64
Henrys Fork 10182 -M -M * 2.9 -M *
Hewinta 9500 .1 .0 * 1.9 2.0 95
Hickerson Park 9122 .1 .0 * 3.0 1.7 176
Hole-in-Rock 9168 .0 .0 * 1.8 1.8 100
Indian Creek 9425 .5 1.4 36* 2.0 2.2 91
Kelley R.S. 8180 .5 .4 125* 1.5 1.8 83
Spirit Lk 10235 .0 .9 0* 3.0 2.4 125
Steel Creek Park 10158 .7 1.0 70* 2.5 2.2 114
----- -----
Basin Index (%) 62* 110
UPPER BEAR RIVER
Bear River RS 8777 .1 .0 * 2.0 1.4 143
Bug Lake 7987 1.0 .0 * 2.3 2.0 115
Burts Miller Ranch 8000 .1 .0 * 1.7 1.3 131
Chalk Creek #1 9171 .6 1.0 60* 2.7 2.8 96
Giveout 6930 -M .0 * .7 1.5 47
Hayden Fork 9130 .2 .0 * 3.1 2.4 129
Kelley R.S. 8180 .5 .4 125* 1.5 1.8 83
Lily Lake 9133 .4 .2 200* 2.5 2.2 114
Monte Cristo 8932 .6 .2 300* 2.7 2.4 112
Salt River Summit 7640 .0 .0 * .6 1.8 33
Spring Creek Divide 9000 -M 1.2 * 2.1 2.2 95
Trial Lake 9992 .2 .8 25* 2.4 2.2 109
----- -----
Basin Index (%) 142* 101
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Median (or Average) 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 (or Average) represents the 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 TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Median (or Average) value for those sites on this day.
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 medians (or averages) 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.
----------------------------------------------------------------------------
-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.
