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: OCTOBER 27 , 2023
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
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WYOMING
SNAKE RIVER
Base Camp 7060 .3 .0 * 2.8 1.8 156
Blind Bull Sum 8650 .7 1.0 70* 1.8 1.8 100
Cottonwood Creek 7670 .8 .6 133* 3.7 2.4 154
East Rim Divide 7930 -M .0 * 1.2 1.2 100
Grand Targhee 9260 3.2 3.3 97* 5.3 3.9 136
Granite Creek 6770 .0 .0 * 1.5 1.7 88
Grassy Lake 7265 -M .6 * -M 2.8 *
Gros Ventre Summit 8750 .5 1.2 42* 2.5 1.6 156
Gunsight Pass 9820 1.3 .8 162* 3.7 1.8 206
Lewis Lake Divide 7850 2.3 .5 460* 4.3 2.6 165
Loomis Park 8240 .3 .2 150* 1.7 1.6 106
Phillips Bench 8200 1.0 .8 125* 3.1 2.4 129
Salt River Summit 7640 .1 .0 * .7 1.4 50
Snake River Station 6920 .6 .0 * 3.3 2.1 157
Somsen Ranch 6800 .5 .0 * 2.9 1.5 193
Spring Creek Divide 9000 .3 .9 33* 2.1 2.0 105
Thumb Divide 7980 1.7 .1 1700* 2.9 2.0 145
Togwotee Pass 9580 1.6 2.4 67* 2.9 2.6 112
Triple Peak 8500 .5 .8 62* 1.4 2.0 70
Two Ocean Plateau 9240 1.8 2.9 62* 4.1 2.6 158
Willow Creek 8080 .7 .6 117* 4.2 3.4 124
Younts Peak 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 113* 132
MADISON HEADWATERS IN WYOMING
Black Bear 8170 3.2 1.8 178* 6.0 3.6 167
Canyon 7870 1.0 -M * 2.4 -M *
Madison Plateau 7750 1.6 1.0 160* 3.6 2.4 150
West Yellowstone 6700 .6 .0 * -M 1.2 *
Whiskey Creek 6800 .6 .2 300* 3.7 1.8 206
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Basin Index (%) 200* 171
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 2.3 2.1 110* 3.0 2.1 143
Canyon 7870 1.0 -M * 2.4 -M *
Evening Star 9200 2.0 1.9 105* 5.4 2.6 208
Fisher Creek 9100 1.8 2.4 75* 3.6 2.8 129
Monument Peak 8850 1.3 1.6 81* 3.9 2.4 162
Northeast Entrance 7350 .3 .0 * 2.1 1.4 150
Parker Peak 9400 1.8 2.0 90* 4.4 2.2 200
Sylvan Lake 8420 -M 1.1 * -M 2.4 *
Thumb Divide 7980 1.7 .1 1700* 2.9 2.0 145
Two Ocean Plateau 9240 1.8 2.9 62* 4.1 2.6 158
White Mill 8700 1.7 1.6 106* 3.0 2.1 143
Wolverine 7650 .5 .0 * 3.9 1.6 244
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Basin Index (%) 104* 167
WIND RIVER
Burroughs Creek 8750 .6 -M * 1.8 -M *
Castle Creek 8400 .7 .0 * 2.0 1.2 167
Cold Springs 9630 .5 .5 100* 2.5 1.6 156
Deer Park 9700 .7 1.4 50* 2.7 2.1 129
Hobbs Park 10100 3.0 1.6 188* 4.2 2.0 210
Kirwin 9550 3.6 1.6 225 4.9 1.8 272
Little Warm 9370 1.1 1.0 110* 2.9 1.6 181
South Pass 9040 .5 .7 71* 2.1 1.6 131
St. Lawrence Alt 8620 .1 -M * 2.4 -M *
Togwotee Pass 9580 1.6 2.4 67* 2.9 2.6 112
Townsend Creek 8700 .2 .4 50* 3.5 1.8 194
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Basin Index (%) 124* 170
BIGHORN BASIN
Bald Mtn. 9380 2.8 2.4 117 3.5 2.3 152
Bear Trap Meadow 8200 .7 .3 233* 2.9 1.6 181
Bone Springs Div 9350 2.6 2.0 130 4.5 2.3 196
Grave Springs 8550 .0 .5 0* 2.0 1.5 133
Kirwin 9550 3.6 1.6 225 4.9 1.8 272
Marquette 8760 4.0 .6 667* 7.0 1.9 368
Middle Powder 7760 .0 .4 0* 3.2 1.8 178
Owl Creek 8975 .2 .4 50* 1.9 1.2 158
Powder River Pass 9480 .4 1.2 33 2.8 2.0 140
Shell Creek 9580 3.6 2.6 138 4.6 2.2 209
Timber Creek 7950 1.7 .2 850* 5.2 1.6 325
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Basin Index (%) 161* 210
SHOSHONE RIVER
Blackwater 9780 3.8 2.3 165* 4.3 2.4 179
Evening Star 9200 2.0 1.9 105* 5.4 2.6 208
Marquette 8760 4.0 .6 667* 7.0 1.9 368
Sylvan Lake 8420 -M 1.1 * -M 2.4 *
Sylvan Road 7120 .9 .1 900* 4.4 2.0 220
Younts Peak 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 218* 237
POWDER RIVER
Bear Trap Meadow 8200 .7 .3 233* 2.9 1.6 181
Cloud Peak Reservoir 9860 3.3 1.6 206* 5.6 2.4 233
Grave Springs 8550 .0 .5 0* 2.0 1.5 133
Hansen Sawmill 8360 .2 .4 50* 2.6 1.6 162
Middle Powder 7760 .0 .4 0* 3.2 1.8 178
Powder River Pass 9480 .4 1.2 33 2.8 2.0 140
Soldier Park 8720 .1 .0 * 4.1 1.6 256
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Basin Index (%) 107* 186
TONGUE RIVER
Big Goose 7990 .3 .6 50* 4.8 1.8 267
Bone Springs Div 9350 2.6 2.0 130 4.5 2.3 196
Burgess Junction 7880 1.3 .8 162* 5.2 2.0 260
Dome Lake 8880 2.0 1.4 143 5.0 2.1 238
Little Goose 8870 1.6 .1 1600* 4.9 1.8 272
Sucker Creek 8880 2.4 1.4 171 5.6 2.2 255
Tie Creek 6870 .6 .0 * 6.2 2.0 310
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Basin Index (%) 171* 255
BELLE FOURCHE
Blind Park 6890 .2 .0 * 1.4 1.5 93
Cole Canyon 5910 .0 .0 * .8 1.4 57
North Rapid Creek 6130 .0 .0 * 2.4 1.2 200
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Basin Index (%) * 112
CHEYENNE RIVER BASIN
Blind Park 6890 .2 .0 * 1.4 1.5 93
North Rapid Creek 6130 .0 .0 * 2.4 1.2 200
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Basin Index (%) * 141
UPPER N. PLATTE
Arapaho Ridge 10976 .0 2.2 0* 1.2 2.6 46
Blackhall Mtn 9839 .5 2.0 25* 2.7 3.6 75
Cinnabar Park 9707 .0 1.0 0* 1.1 2.1 52
Columbine 9167 -M .2 * 1.1 2.6 42
Divide Peak 8730 .5 .6 83* 3.3 2.6 127
Joe Wright 10158 .2 1.2 17* 2.0 3.2 62
Laprele Creek 8390 .0 .2 0* 2.8 1.4 200
Med Bow 10512 1.5 -M * 2.6 -M *
Never Summer 10323 1.4 2.0 70* 1.4 2.4 58
North French Creek 10153 .0 2.0 0* 2.2 2.6 85
Old Battle 9860 .4 1.8 22* 2.0 3.6 56
Rawah 9069 .0 .5 0* 2.0 2.6 77
Sage Creek Basin 7850 .4 .0 * 2.0 1.8 111
Sand Lake 10098 2.0 2.2 91* 2.1 2.6 81
South Brush Creek 8495 .0 .3 0* 1.4 1.6 88
Tower 10620 .3 1.7 18* 2.5 3.7 68
Webber Springs 9260 .4 .7 57* 1.4 2.8 50
Whiskey Park 9020 .2 .6 33* 1.8 2.6 69
Willow Creek Pass 9523 1.1 1.1 100* 1.5 1.8 83
Zirkel 9338 .2 .4 50* 1.3 3.1 42
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Basin Index (%) 37* 73
SWEETWATER
Deer Park 9700 .7 1.4 50* 2.7 2.1 129
Larsen Creek 9000 -M .0 * 1.7 1.8 94
South Pass 9040 .5 .7 71* 2.1 1.6 131
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Basin Index (%) 57* 118
LOWER N. PLATTE
Casper Mtn. 7920 1.6 .7 229* 5.5 2.0 275
Laprele Creek 8390 .0 .2 0* 2.8 1.4 200
Reno Hill 8430 .5 1.0 50* 4.4 2.0 220
Windy Peak 7915 .1 .2 50* 1.9 1.2 158
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Basin Index (%) 105* 221
LARAMIE RIVER
Brooklyn Lake 10250 .0 .6 0* 1.0 2.0 50
Cinnabar Park 9707 .0 1.0 0* 1.1 2.1 52
Crow Creek 8335 .0 .1 0* 1.6 1.7 94
Deadman Hill 10239 1.6 2.0 80 1.5 2.4 62
Rawah 9069 .0 .5 0* 2.0 2.6 77
Roach 9740 .1 .9 11* 1.3 2.1 62
Windy Peak 7915 .1 .2 50* 1.9 1.2 158
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Basin Index (%) 34* 74
S. PLATTE
Crow Creek 8335 .0 .1 0* 1.6 1.7 94
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Basin Index (%) 0* 94
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 1.9 1.8 106
Divide Peak 8730 .5 .6 83* 3.3 2.6 127
Elk River 8739 .6 .0 * 1.3 2.1 62
Elkhead Divide 8800 -M -M * -M -M *
Little Snake River 8928 .2 .4 50* 2.1 4.0 52
Old Battle 9860 .4 1.8 22* 2.0 3.6 56
Sage Creek Basin 7850 .4 .0 * 2.0 1.8 111
Sandstone RS 8152 .1 .0 * 1.2 2.1 57
Whiskey Park 9020 .2 .6 33* 1.8 2.6 69
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Basin Index (%) 71* 76
UPPER GREEN RIVER
Big Sandy Opening 9080 .5 1.0 50* 1.9 1.4 136
Blind Bull Sum 8650 .7 1.0 70* 1.8 1.8 100
East Rim Divide 7930 -M .0 * 1.2 1.2 100
Elkhart Park G.S. 9400 .3 .8 38* 2.5 1.6 156
Gros Ventre Summit 8750 .5 1.2 42* 2.5 1.6 156
Gunsight Pass 9820 1.3 .8 162* 3.7 1.8 206
Indian Creek 9425 .5 1.4 36* 2.0 1.9 105
Kendall R.S. 7740 .1 .0 * 2.2 1.4 157
Larsen Creek 9000 -M .0 * 1.7 1.8 94
Loomis Park 8240 .3 .2 150* 1.7 1.6 106
New Fork Lake 8340 .0 .1 0* .7 1.0 70
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * .8 1.2 67
Spring Creek Divide 9000 .3 .9 33* 2.1 2.0 105
Triple Peak 8500 .5 .8 62* 1.4 2.0 70
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Basin Index (%) 61* 117
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 2.0 1.4 143
Buck Pasture 9632 .2 -M * 2.0 -M *
EF Blacks Fork GS 9360 .0 .0 * 1.7 1.6 106
Hams Fork 7840 -M .0 * .9 1.4 64
Henrys Fork 10182 -M -M * 2.7 -M *
Hewinta 9500 .2 .0 * 1.7 1.8 94
Hickerson Park 9122 .0 .0 * 2.6 1.2 217
Hole-in-Rock 9168 .0 .0 * 1.5 1.5 100
Indian Creek 9425 .5 1.4 36* 2.0 1.9 105
Kelley R.S. 8180 .5 .4 125* 1.5 1.6 94
Spirit Lk 10235 .0 .4 0* 2.8 2.0 140
Steel Creek Park 10158 .4 .8 50* 2.3 1.8 128
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Basin Index (%) 67* 117
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 1.8 -M *
Bug Lake 7987 1.0 .0 * 2.2 1.6 138
Burts Miller Ranch 8000 .0 .0 * 1.5 .9 167
Chalk Creek #1 9171 .6 .8 75* 2.5 2.2 114
Giveout 6930 -M .0 * .9 1.5 60
Hayden Fork 9130 .4 .0 * 2.8 2.0 140
Kelley R.S. 8180 .5 .4 125* 1.5 1.6 94
Lily Lake 9133 .4 .1 400* 2.3 1.6 144
Monte Cristo 8932 .7 .0 * 2.6 2.2 118
Salt River Summit 7640 .1 .0 * .7 1.4 50
Spring Creek Divide 9000 .3 .9 33* 2.1 2.0 105
Trial Lake 9992 .2 .8 25* 2.4 2.1 114
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Basin Index (%) 140* 113
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-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.
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-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.
