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 23 , 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 6.8 2.8 243 32.2 26.3 122
COTTONWOOD CREEK 7670 14.0 9.9 141 30.5 34.8 88
GRAND TARGHEE 9260 54.3 -M * 43.0 -M *
GRANITE CREEK 6770 6.1 4.6 133 26.6 24.2 110
GRASSY LAKE 7265 27.0 21.2 127 50.9 43.9 116
GROS VENTRE SUMMIT 8750 5.0 7.2 69 18.0 17.0 106
GUNSIGHT PASS 9820 7.6 -M * 18.9 -M *
LEWIS LAKE DIVIDE 7850 -M 24.3 * -M 44.4 *
PHILLIPS BENCH 8200 23.1 19.6 118 40.4 35.7 113
SALT RIVER SUMMIT 7760 .7 1.0 70 19.5 23.4 83
SNAKE RIVER STATION 6920 3.3 1.6 206 32.5 27.6 118
SPRING CREEK DIVIDE 9000 16.7 20.6 81 28.2 32.4 87
THUMB DIVIDE 7980 7.2 6.2 116 24.8 24.1 103
TOGWOTEE PASS 9580 28.7 25.5 113 36.8 31.7 116
TWO OCEAN PLATEAU 9240 42.3 28.7 147 39.5 35.2 112
WILLOW CREEK 8380 22.7 20.6 110 47.7 41.4 115
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Basin wide percent of average 120 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.0 23.8 118 30.6 26.1 117
BLACK BEAR 8170 43.6 32.7 133 50.6 49.1 103
CANYON 7870 10.8 4.0 270 25.2 19.7 128
FISHER CREEK 9100 45.0 33.7 134 47.2 45.4 104
MADISON PLATEAU 7750 25.8 14.9 173 39.0 33.2 117
NORTHEAST ENTRANCE 7350 .8 1.2 67 18.7 16.8 111
PARKER PEAK 9400 29.4 22.1 133 -M 22.1 *
SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122
THUMB DIVIDE 7980 7.2 6.2 116 24.8 24.1 103
TWO OCEAN PLATEAU 9240 42.3 28.7 147 39.5 35.2 112
WHISKEY CREEK 6800 14.3 5.5 260 30.1 26.4 114
WHITE MILL 8700 28.2 22.1 128 34.1 34.1 100
WOLVERINE 7650 -M .9 * -M 17.5 *
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Basin wide percent of average 141 111
WIND RIVER
BURROUGHS CREEK 8750 10.8 7.1 152 23.1 21.7 106
COLD SPRINGS 9630 1.1 1.6 69 15.6 16.3 96
DEER PARK 9700 13.6 14.7 93 26.7 29.9 89
HOBBS PARK 10100 15.3 14.1 109 21.5 20.0 108
LITTLE WARM 9370 1.4 4.4 32 19.0 19.2 99
SOUTH PASS 9040 8.6 9.8 88 23.5 25.3 93
ST. LAWRENCE ALT 8620 1.4 1.4 100 13.8 14.4 96
TOGWOTEE PASS 9580 28.7 25.5 113 36.8 31.7 116
TOWNSEND CREEK 8700 1.5 3.3 45 18.2 18.0 101
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Basin wide percent of average 101 101
BIGHORN BASIN
BALD MTN. 9380 17.4 20.8 84 21.6 24.4 89
BEAR TRAP MEADOW 8200 .6 .0 16.2 13.3 122
BLACKWATER 9780 29.6 28.1 105 32.0 27.7 116
BONE SPRINGS DIV 9350 15.4 13.0 118 25.0 21.3 117
EVENING STAR 9200 28.8 30.3 95 42.7 33.1 129
GRAVE SPRINGS 8550 -M 3.2 * -M 15.4 *
KIRWIN 9550 9.6 8.8 109 20.4 16.6 123
MARQUETTE 8760 -M 6.6 * 18.5 16.9 109
MIDDLE POWDER 7760 8.5 6.8 125 16.2 18.3 89
OWL CREEK 8975 -M 1.2 * 11.4 10.3 111
POWDER RIVER PASS 9480 8.2 5.0 164 21.8 18.6 117
SHELL CREEK 9580 17.1 14.1 121 22.3 19.5 114
SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122
SYLVAN ROAD 7120 .3 .5 60 26.4 22.5 117
TIMBER CREEK 7950 -M 1.2 * 16.0 13.4 119
YOUNTS PEAK 8350 13.7 11.9 115 22.5 21.1 107
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Basin wide percent of average 107 114
SHOSHONE RIVER
BLACKWATER 9780 29.6 28.1 105 32.0 27.7 116
EVENING STAR 9200 28.8 30.3 95 42.7 33.1 129
KIRWIN 9550 9.6 8.8 109 20.4 16.6 123
MARQUETTE 8760 -M 6.6 * 18.5 16.9 109
SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122
SYLVAN ROAD 7120 .3 .5 60 26.4 22.5 117
YOUNTS PEAK 8350 13.7 11.9 115 22.5 21.1 107
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Basin wide percent of average 103 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 .0 16.2 13.3 122
BIG GOOSE 7990 -M 6.9 * -M 15.6 *
BONE SPRINGS DIV 9350 15.4 13.0 118 25.0 21.3 117
BURGESS JUNCTION 7880 14.0 6.7 209 22.0 17.8 124
CLOUD PEAK RESERVOIR 9860 -M 12.0 * -M 20.5 *
DOME LAKE 8880 10.3 6.8 151 23.7 19.7 120
GRAVE SPRINGS 8550 -M 3.2 * -M 15.4 *
HANSEN SAWMILL 8360 -M .8 * -M 13.2 *
MIDDLE POWDER 7760 8.5 6.8 125 16.2 18.3 89
POWDER RIVER PASS 9480 8.2 5.0 164 21.8 18.6 117
SUCKER CREEK 8880 16.4 7.2 228 26.5 20.5 129
TIE CREEK 6870 .7 .1 700 19.8 16.3 121
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Basin wide percent of average 161 117
BELLE FOURCHE
BLIND PARK 6890 -M .0 * 17.0 16.9 101
COLE CANYON 5910 .0 .0 100 14.8 12.0 123
NORTH RAPID CREEK 6130 .0 .1 0 17.7 13.3 133
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Basin wide percent of average 0 117
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.5 7.2 188 35.1 31.5 111
DIVIDE PEAK 8880 13.2 8.1 163 29.3 26.7 110
ELK RIVER 8700 7.4 3.8 195 28.7 25.3 113
JOE WRIGHT 10120 -M 21.4 * -M 33.7 *
NORTH FRENCH CREEK 10130 29.4 29.9 98 38.1 33.2 115
OLD BATTLE 10000 35.4 31.7 112 48.1 43.2 111
SAGE CREEK BASIN 7850 .0 4.7 0 20.8 15.5 134
SOUTH BRUSH CREEK 8440 .2 3.8 5 22.1 22.8 97
TOWER 10500 46.7 48.7 96 51.3 48.9 105
WEBBER SPRINGS 9250 17.9 12.5 143 38.0 33.9 112
WILLOW CREEK PASS 9540 17.8 7.4 241 21.6 17.9 121
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Basin wide percent of average 115 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.7 18.0 87 29.0 30.2 96
CASPER MTN. 7900 9.8 7.7 127 23.2 22.9 101
DEADMAN HILL 10220 20.4 15.4 132 27.0 23.8 113
DEER PARK 9700 13.6 14.7 93 26.7 29.9 89
LAPRELE CREEK 8375 .3 2.0 15 18.6 19.2 97
RENO HILL 8400 11.9 6.3 189 27.5 23.7 116
ROACH 9700 16.4 9.7 169 28.9 25.4 114
SAND LAKE 10050 32.6 32.2 101 39.0 33.1 118
SOUTH PASS 9040 8.6 9.8 88 23.5 25.3 93
WINDY PEAK 7900 1.0 .7 143 16.9 16.1 105
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Basin wide percent of average 112 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.0 20.4 103
DIVIDE PEAK 8880 13.2 8.1 163 29.3 26.7 110
OLD BATTLE 10000 35.4 31.7 112 48.1 43.2 111
SANDSTONE RS 8150 1.6 1.5 107 26.3 24.1 109
WHISKEY PARK 8950 33.8 21.3 159 43.8 36.9 119
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Basin wide percent of average 134 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.9 5.6 34 17.1 17.9 96
BLIND BULL SUM 8650 24.7 22.1 112 21.7 27.3 79
EAST RIM DIVIDE 7930 .8 5.8 14 14.3 15.5 92
ELKHART PARK G.S. 9400 2.5 6.7 37 14.6 18.2 80
GROS VENTRE SUMMIT 8750 5.0 7.2 69 18.0 17.0 106
GUNSIGHT PASS 9820 7.6 -M * 18.9 -M *
KENDALL R.S. 7740 .2 .0 16.6 18.1 92
LOOMIS PARK 8240 2.3 6.4 36 21.8 21.8 100
NEW FORK LAKE 8340 .7 .8 87 12.0 15.2 79
SNIDER BASIN 8060 .6 4.0 15 16.7 19.9 84
SPRING CREEK DIVIDE 9000 16.7 20.6 81 28.2 32.4 87
TRIPLE PEAK 8500 14.8 11.7 126 34.8 31.1 112
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Basin wide percent of average 77 92
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 13.6 16.4 83
HEWINTA 9519 .0 2.1 0 21.5 19.7 109
HICKERSON PARK 9145 .3 .6 50 12.7 12.0 106
HOLE-IN-ROCK 9150 .9 .5 180 13.5 11.6 116
INDIAN CREEK 9425 -M 19.9 * -M 31.7 *
KELLEY R.S. 8180 4.7 5.6 84 22.1 25.5 87
STEEL CREEK PARK 10200 -M 15.7 * -M 22.4 *
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Basin wide percent of average 67 98
UPPER BEAR RIVER
BUG LAKE 7950 -M 6.5 * -M 24.4 *
HAYDEN FORK 9212 1.5 4.1 37 29.2 27.6 106
KELLEY R.S. 8180 4.7 5.6 84 22.1 25.5 87
LILY LAKE 9156 -M 3.7 * -M 23.3 *
MONTE CRISTO 8960 18.7 18.2 103 31.7 33.2 95
SALT RIVER SUMMIT 7760 .7 1.0 70 19.5 23.4 83
TRIAL LAKE 9992 -M 19.5 * -M 32.3 *
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Basin wide percent of average 89 93
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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.