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: MAY 30 , 2008
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 2.4 .0 32.8 26.9 122
COTTONWOOD CREEK 7670 10.4 6.2 168 31.6 35.6 89
GRAND TARGHEE 9260 55.4 -M * 44.4 -M *
GRANITE CREEK 6770 2.8 1.7 165 28.2 24.8 114
GRASSY LAKE 7265 23.8 15.7 152 53.1 44.8 119
GROS VENTRE SUMMIT 8750 3.6 4.5 80 18.5 17.5 106
GUNSIGHT PASS 9820 7.2 -M * 19.5 -M *
LEWIS LAKE DIVIDE 7850 26.3 19.4 136 45.0 45.2 100
PHILLIPS BENCH 8200 23.1 15.3 151 42.1 36.4 116
SALT RIVER SUMMIT 7760 -M .0 * -M 24.0 *
SNAKE RIVER STATION 6920 .0 .0 100 33.8 28.2 120
SPRING CREEK DIVIDE 9000 16.3 16.3 100 29.8 32.9 91
THUMB DIVIDE 7980 3.8 2.9 131 26.0 24.7 105
TOGWOTEE PASS 9580 29.2 22.8 128 37.9 32.5 117
TWO OCEAN PLATEAU 9240 43.2 26.1 166 41.0 36.1 114
WILLOW CREEK 8380 21.7 15.8 137 49.4 42.3 117
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Basin wide percent of average 139 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.2 21.1 134 31.7 26.8 118
BLACK BEAR 8170 44.0 27.6 159 52.2 50.0 104
CANYON 7870 6.9 2.0 345 25.8 20.3 127
FISHER CREEK 9100 42.0 30.8 136 48.6 46.4 105
MADISON PLATEAU 7750 23.8 10.2 233 40.0 34.1 117
NORTHEAST ENTRANCE 7350 .0 .5 0 19.5 17.4 112
PARKER PEAK 9400 30.1 19.4 155 34.7 23.0 151
SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124
THUMB DIVIDE 7980 3.8 2.9 131 26.0 24.7 105
TWO OCEAN PLATEAU 9240 43.2 26.1 166 41.0 36.1 114
WHISKEY CREEK 6800 10.6 1.8 589 31.1 27.1 115
WHITE MILL 8700 27.7 19.0 146 35.2 35.0 101
WOLVERINE 7650 .0 .0 100 20.4 18.1 113
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Basin wide percent of average 161 114
WIND RIVER
BURROUGHS CREEK 8750 11.2 4.2 267 24.8 22.4 111
COLD SPRINGS 9630 1.2 1.1 109 17.0 16.9 101
DEER PARK 9700 14.6 9.2 159 28.5 30.7 93
HOBBS PARK 10100 16.1 10.9 148 23.3 20.8 112
LITTLE WARM 9370 .9 2.4 38 20.1 19.8 102
SOUTH PASS 9040 8.6 7.3 118 25.3 25.9 98
ST. LAWRENCE ALT 8620 1.3 .7 186 15.3 15.0 102
TOGWOTEE PASS 9580 29.2 22.8 128 37.9 32.5 117
TOWNSEND CREEK 8700 1.5 2.0 75 20.0 18.6 108
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Basin wide percent of average 140 105
BIGHORN BASIN
BALD MTN. 9380 19.9 17.5 114 24.7 25.1 98
BEAR TRAP MEADOW 8200 .0 .0 100 18.4 14.0 131
BLACKWATER 9780 31.7 25.5 124 33.8 28.6 118
BONE SPRINGS DIV 9350 15.9 9.4 169 27.1 22.1 123
EVENING STAR 9200 30.2 27.4 110 44.5 34.1 130
GRAVE SPRINGS 8550 8.0 2.2 364 18.5 15.9 116
KIRWIN 9550 10.2 6.2 165 21.8 17.3 126
MARQUETTE 8760 8.2 4.7 174 20.1 17.7 114
MIDDLE POWDER 7760 5.9 3.5 169 17.7 18.9 94
OWL CREEK 8975 2.2 .6 367 12.9 10.9 118
POWDER RIVER PASS 9480 8.8 2.9 303 24.1 19.4 124
SHELL CREEK 9580 18.5 11.4 162 24.8 20.3 122
SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124
SYLVAN ROAD 7120 .0 .2 0 27.7 23.1 120
TIMBER CREEK 7950 3.6 .7 514 18.0 14.2 127
YOUNTS PEAK 8350 12.6 8.1 156 23.9 21.9 109
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Basin wide percent of average 148 118
SHOSHONE RIVER
BLACKWATER 9780 31.7 25.5 124 33.8 28.6 118
EVENING STAR 9200 30.2 27.4 110 44.5 34.1 130
KIRWIN 9550 10.2 6.2 165 21.8 17.3 126
MARQUETTE 8760 8.2 4.7 174 20.1 17.7 114
SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124
SYLVAN ROAD 7120 .0 .2 0 27.7 23.1 120
YOUNTS PEAK 8350 12.6 8.1 156 23.9 21.9 109
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Basin wide percent of average 134 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100 18.4 14.0 131
BIG GOOSE 7990 6.3 3.9 162 21.9 16.2 135
BONE SPRINGS DIV 9350 15.9 9.4 169 27.1 22.1 123
BURGESS JUNCTION 7880 12.5 3.5 357 23.4 18.3 128
CLOUD PEAK RESERVOIR 9860 20.8 8.7 239 29.5 21.5 137
DOME LAKE 8880 10.8 3.9 277 26.0 20.4 127
GRAVE SPRINGS 8550 8.0 2.2 364 18.5 15.9 116
HANSEN SAWMILL 8360 3.7 .3 1233 21.7 13.9 156
MIDDLE POWDER 7760 5.9 3.5 169 17.7 18.9 94
POWDER RIVER PASS 9480 8.8 2.9 303 24.1 19.4 124
SUCKER CREEK 8880 15.9 4.3 370 28.1 21.3 132
TIE CREEK 6870 .0 .0 100 22.1 17.0 130
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Basin wide percent of average 255 127
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 18.4 17.7 104
COLE CANYON 5910 .0 .0 100 18.0 12.7 142
NORTH RAPID CREEK 6130 .0 .0 100 19.7 13.8 143
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Basin wide percent of average * 127
UPPER N. PLATTE RIVER
COLUMBINE 9160 6.7 2.9 231 35.3 32.1 110
DIVIDE PEAK 8880 7.0 4.5 156 30.1 27.3 110
ELK RIVER 8700 .2 1.7 12 29.4 25.8 114
JOE WRIGHT 10120 22.2 18.1 123 38.0 34.6 110
NORTH FRENCH CREEK 10130 27.4 25.4 108 38.9 34.1 114
OLD BATTLE 10000 33.5 27.1 124 49.1 44.0 112
SAGE CREEK BASIN 7850 .0 2.6 0 21.2 15.8 134
SOUTH BRUSH CREEK 8440 .1 2.1 5 23.2 23.5 99
TOWER 10500 41.9 44.2 95 51.8 49.8 104
WEBBER SPRINGS 9250 13.6 7.8 174 38.5 34.5 112
WILLOW CREEK PASS 9540 14.0 4.0 350 21.9 18.6 118
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Basin wide percent of average 119 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.5 13.0 104 30.4 30.9 98
CASPER MTN. 7900 7.8 4.8 162 25.7 23.8 108
DEADMAN HILL 10220 17.6 12.3 143 27.5 24.5 112
DEER PARK 9700 14.6 9.2 159 28.5 30.7 93
LAPRELE CREEK 8375 -M 1.0 * 20.6 19.9 104
RENO HILL 8400 9.4 4.0 235 29.7 24.5 121
ROACH 9700 12.1 6.7 181 29.6 26.2 113
SAND LAKE 10050 32.1 27.4 117 40.2 34.0 118
SOUTH PASS 9040 8.6 7.3 118 25.3 25.9 98
WINDY PEAK 7900 .8 .2 400 18.4 16.9 109
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Basin wide percent of average 137 107
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.8 102
DIVIDE PEAK 8880 7.0 4.5 156 30.1 27.3 110
OLD BATTLE 10000 33.5 27.1 124 49.1 44.0 112
SANDSTONE RS 8150 .0 .3 0 26.5 24.6 108
WHISKEY PARK 8950 29.9 15.3 195 44.2 37.6 118
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Basin wide percent of average 149 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.6 2.4 67 18.7 18.4 102
BLIND BULL SUM 8650 23.9 18.8 127 23.4 28.0 84
EAST RIM DIVIDE 7930 .0 2.5 0 14.9 15.9 94
ELKHART PARK G.S. 9400 2.6 4.1 63 15.8 18.9 84
GROS VENTRE SUMMIT 8750 3.6 4.5 80 18.5 17.5 106
GUNSIGHT PASS 9820 7.2 -M * 19.5 -M *
KENDALL R.S. 7740 .1 .0 17.6 18.5 95
LOOMIS PARK 8240 .6 3.2 19 22.9 22.3 103
NEW FORK LAKE 8340 .0 .0 100 13.4 15.7 85
SNIDER BASIN 8060 .0 .5 0 18.1 20.3 89
SPRING CREEK DIVIDE 9000 16.3 16.3 100 29.8 32.9 91
TRIPLE PEAK 8500 14.2 6.4 222 36.6 31.8 115
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Basin wide percent of average 107 96
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 14.8 16.9 88
HEWINTA 9519 -M .8 * 21.7 20.2 107
HICKERSON PARK 9145 .0 .1 0 12.8 12.5 102
HOLE-IN-ROCK 9150 .0 .1 0 13.7 12.1 113
INDIAN CREEK 9425 18.8 15.9 118 -M 32.3 *
KELLEY R.S. 8180 2.5 2.4 104 23.1 26.1 89
STEEL CREEK PARK 10200 17.6 12.7 139 24.5 23.0 107
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Basin wide percent of average 125 100
UPPER BEAR RIVER
BUG LAKE 7950 6.0 3.3 182 21.8 25.0 87
HAYDEN FORK 9212 .2 1.9 11 29.9 28.3 106
KELLEY R.S. 8180 2.5 2.4 104 23.1 26.1 89
LILY LAKE 9156 .5 1.8 28 23.9 23.9 100
MONTE CRISTO 8960 16.4 13.8 119 32.1 33.9 95
SALT RIVER SUMMIT 7760 -M .0 * -M 24.0 *
TRIAL LAKE 9992 13.7 15.7 87 30.8 33.1 93
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Basin wide percent of average 101 95
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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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.