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 THURSDAY: MAY 22 , 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 6.9 3.3 209 31.9 26.2 122
COTTONWOOD CREEK 7670 14.1 10.4 136 30.5 34.7 88
GRAND TARGHEE 9260 55.0 -M * 42.7 -M *
GRANITE CREEK 6770 5.9 5.0 118 26.0 24.1 108
GRASSY LAKE 7265 26.8 22.0 122 50.7 43.8 116
GROS VENTRE SUMMIT 8750 4.6 7.5 61 17.6 16.9 104
GUNSIGHT PASS 9820 7.3 -M * 18.5 -M *
LEWIS LAKE DIVIDE 7850 28.3 24.9 114 42.8 44.3 97
PHILLIPS BENCH 8200 22.7 20.2 112 39.8 35.6 112
SALT RIVER SUMMIT 7760 .8 1.5 53 19.4 23.4 83
SNAKE RIVER STATION 6920 3.5 2.1 167 32.3 27.5 117
SPRING CREEK DIVIDE 9000 16.7 21.2 79 27.9 32.3 86
THUMB DIVIDE 7980 7.1 6.6 108 24.6 24.0 103
TOGWOTEE PASS 9580 28.2 25.8 109 36.4 31.6 115
TWO OCEAN PLATEAU 9240 41.9 29.0 144 39.3 35.1 112
WILLOW CREEK 8380 22.7 21.2 107 47.5 41.2 115
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Basin wide percent of average 115 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 27.3 24.0 114 29.7 26.0 114
BLACK BEAR 8170 43.1 33.3 129 50.1 49.0 102
CANYON 7870 10.7 4.3 249 25.0 19.6 128
FISHER CREEK 9100 -M 34.0 * 46.5 45.2 103
MADISON PLATEAU 7750 25.2 15.6 162 38.4 33.0 116
NORTHEAST ENTRANCE 7350 .5 1.3 38 17.8 16.7 107
PARKER PEAK 9400 28.6 22.5 127 -M 22.0 *
SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121
THUMB DIVIDE 7980 7.1 6.6 108 24.6 24.0 103
TWO OCEAN PLATEAU 9240 41.9 29.0 144 39.3 35.1 112
WHISKEY CREEK 6800 14.1 6.1 231 29.6 26.3 113
WHITE MILL 8700 27.6 22.5 123 33.5 34.0 99
WOLVERINE 7650 .1 1.1 9 18.1 17.4 104
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Basin wide percent of average 134 109
WIND RIVER
BURROUGHS CREEK 8750 10.1 7.6 133 22.2 21.6 103
COLD SPRINGS 9630 .2 1.6 12 14.7 16.2 91
DEER PARK 9700 13.4 15.1 89 25.9 29.8 87
HOBBS PARK 10100 14.5 14.6 99 20.9 19.9 105
LITTLE WARM 9370 .8 4.9 16 18.3 19.1 96
SOUTH PASS 9040 7.9 10.3 77 22.7 25.2 90
ST. LAWRENCE ALT 8620 .5 1.5 33 12.7 14.3 89
TOGWOTEE PASS 9580 28.2 25.8 109 36.4 31.6 115
TOWNSEND CREEK 8700 .6 3.5 17 17.0 17.9 95
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Basin wide percent of average 90 98
BIGHORN BASIN
BALD MTN. 9380 17.3 21.2 82 21.3 24.3 88
BEAR TRAP MEADOW 8200 .1 .0 14.6 13.2 111
BLACKWATER 9780 28.7 28.3 101 31.0 27.5 113
BONE SPRINGS DIV 9350 15.3 13.4 114 24.4 21.1 116
EVENING STAR 9200 28.0 30.6 92 41.4 33.0 125
GRAVE SPRINGS 8550 6.8 3.6 189 15.0 15.3 98
KIRWIN 9550 8.2 9.2 89 18.9 16.5 115
MARQUETTE 8760 5.0 7.0 71 16.1 16.7 96
MIDDLE POWDER 7760 8.7 7.2 121 15.0 18.2 82
OWL CREEK 8975 .4 1.2 33 9.9 10.2 97
POWDER RIVER PASS 9480 7.2 5.4 133 20.4 18.5 110
SHELL CREEK 9580 17.2 14.3 120 21.9 19.4 113
SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121
SYLVAN ROAD 7120 .4 .7 57 -M 22.5 *
TIMBER CREEK 7950 .9 1.3 69 13.7 13.3 103
YOUNTS PEAK 8350 13.4 12.4 108 22.1 21.0 105
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Basin wide percent of average 103 108
SHOSHONE RIVER
BLACKWATER 9780 28.7 28.3 101 31.0 27.5 113
EVENING STAR 9200 28.0 30.6 92 41.4 33.0 125
KIRWIN 9550 8.2 9.2 89 18.9 16.5 115
MARQUETTE 8760 5.0 7.0 71 16.1 16.7 96
SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121
SYLVAN ROAD 7120 .4 .7 57 -M 22.5 *
YOUNTS PEAK 8350 13.4 12.4 108 22.1 21.0 105
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Basin wide percent of average 98 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .0 14.6 13.2 111
BIG GOOSE 7990 6.9 7.3 95 18.9 15.5 122
BONE SPRINGS DIV 9350 15.3 13.4 114 24.4 21.1 116
BURGESS JUNCTION 7880 13.7 7.2 190 21.5 17.7 121
CLOUD PEAK RESERVOIR 9860 16.1 12.3 131 23.7 20.4 116
DOME LAKE 8880 9.1 7.2 126 22.2 19.6 113
GRAVE SPRINGS 8550 6.8 3.6 189 15.0 15.3 98
HANSEN SAWMILL 8360 .7 .9 78 -M 13.1 *
MIDDLE POWDER 7760 8.7 7.2 121 15.0 18.2 82
POWDER RIVER PASS 9480 7.2 5.4 133 20.4 18.5 110
SUCKER CREEK 8880 15.3 7.6 201 25.5 20.4 125
TIE CREEK 6870 .5 .2 250 18.6 16.2 115
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Basin wide percent of average 139 112
BELLE FOURCHE
BLIND PARK 6890 -M .0 * 16.6 16.8 99
COLE CANYON 5910 .0 .0 100 14.7 11.9 124
NORTH RAPID CREEK 6130 -M .1 * 16.7 13.2 127
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Basin wide percent of average * 115
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.9 8.0 174 35.1 31.4 112
DIVIDE PEAK 8880 13.3 8.7 153 29.1 26.6 109
ELK RIVER 8700 7.4 4.2 176 28.7 25.2 114
JOE WRIGHT 10120 24.6 21.8 113 36.7 33.5 110
NORTH FRENCH CREEK 10130 29.1 30.4 96 37.4 33.0 113
OLD BATTLE 10000 34.7 32.3 107 48.1 43.1 112
SAGE CREEK BASIN 7850 .0 5.0 0 20.6 15.4 134
SOUTH BRUSH CREEK 8440 .2 4.2 5 22.1 22.7 97
TOWER 10500 47.3 49.2 96 -M 48.7 *
WEBBER SPRINGS 9250 18.9 13.2 143 38.0 33.7 113
WILLOW CREEK PASS 9540 17.8 7.9 225 21.5 17.8 121
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Basin wide percent of average 112 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.1 18.7 81 28.3 30.0 94
CASPER MTN. 7900 10.4 8.2 127 22.2 22.8 97
DEADMAN HILL 10220 20.2 15.8 128 26.2 23.7 111
DEER PARK 9700 13.4 15.1 89 25.9 29.8 87
LAPRELE CREEK 8375 .0 2.1 0 16.8 19.1 88
RENO HILL 8400 12.1 6.7 181 26.4 23.5 112
ROACH 9700 16.5 10.2 162 28.8 25.3 114
SAND LAKE 10050 31.9 32.7 98 37.9 32.9 115
SOUTH PASS 9040 7.9 10.3 77 22.7 25.2 90
WINDY PEAK 7900 .8 .8 100 15.4 16.0 96
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Basin wide percent of average 106 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 20.7 20.3 102
DIVIDE PEAK 8880 13.3 8.7 153 29.1 26.6 109
OLD BATTLE 10000 34.7 32.3 107 48.1 43.1 112
SANDSTONE RS 8150 1.9 1.7 112 26.0 24.0 108
WHISKEY PARK 8950 31.9 22.1 144 43.6 36.8 118
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Basin wide percent of average 126 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.0 6.1 16 16.2 17.8 91
BLIND BULL SUM 8650 24.8 22.5 110 21.3 27.2 78
EAST RIM DIVIDE 7930 .1 6.3 2 13.5 15.4 88
ELKHART PARK G.S. 9400 2.0 7.1 28 14.2 18.1 78
GROS VENTRE SUMMIT 8750 4.6 7.5 61 17.6 16.9 104
GUNSIGHT PASS 9820 7.3 -M * 18.5 -M *
KENDALL R.S. 7740 .1 .0 16.0 18.0 89
LOOMIS PARK 8240 1.5 6.8 22 20.9 21.7 96
NEW FORK LAKE 8340 .0 1.2 0 -M 15.1 *
SNIDER BASIN 8060 .4 4.5 9 16.4 19.9 82
SPRING CREEK DIVIDE 9000 16.7 21.2 79 27.9 32.3 86
TRIPLE PEAK 8500 14.4 12.4 116 34.2 31.0 110
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Basin wide percent of average 69 91
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 13.3 16.3 82
HEWINTA 9519 .1 2.3 4 21.4 19.6 109
HICKERSON PARK 9145 .8 .7 114 12.6 11.9 106
HOLE-IN-ROCK 9150 -M .6 * 13.4 11.5 117
INDIAN CREEK 9425 -M 20.4 * -M 31.6 *
KELLEY R.S. 8180 4.6 6.1 75 21.9 25.4 86
STEEL CREEK PARK 10200 17.8 16.1 111 23.9 22.3 107
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Basin wide percent of average 92 100
UPPER BEAR RIVER
BUG LAKE 7950 8.8 7.0 126 20.4 24.3 84
HAYDEN FORK 9212 1.1 4.5 24 28.7 27.5 104
KELLEY R.S. 8180 4.6 6.1 75 21.9 25.4 86
LILY LAKE 9156 2.0 4.0 50 22.5 23.2 97
MONTE CRISTO 8960 18.2 18.8 97 31.2 33.1 94
SALT RIVER SUMMIT 7760 .8 1.5 53 19.4 23.4 83
TRIAL LAKE 9992 13.5 20.1 67 29.2 32.2 91
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Basin wide percent of average 79 92
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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.