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 WEDNESDAY: MAY 7 , 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 15.6 10.0 156 30.4 24.9 122
COTTONWOOD CREEK 7670 20.9 17.5 119 28.2 32.8 86
GRAND TARGHEE 9260 56.2 -M * 38.6 -M *
GRANITE CREEK 6770 14.4 10.8 133 24.9 22.9 109
GRASSY LAKE 7265 -M 30.8 * 47.9 41.8 115
GROS VENTRE SUMMIT 8750 12.6 12.1 104 16.0 15.7 102
GUNSIGHT PASS 9820 11.9 -M * 16.9 -M *
LEWIS LAKE DIVIDE 7850 38.3 32.6 117 41.0 42.4 97
PHILLIPS BENCH 8200 33.0 27.6 120 38.6 33.8 114
SALT RIVER SUMMIT 7760 11.0 8.4 131 18.1 22.1 82
SNAKE RIVER STATION 6920 14.5 9.6 151 30.3 26.1 116
SPRING CREEK DIVIDE 9000 23.7 27.4 86 26.6 30.8 86
THUMB DIVIDE 7980 15.3 12.9 119 23.2 22.6 103
TOGWOTEE PASS 9580 29.8 28.1 106 33.7 29.8 113
TWO OCEAN PLATEAU 9240 -M 31.6 * -M 33.0 *
WILLOW CREEK 8380 29.6 28.8 103 43.7 38.8 113
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Basin wide percent of average 115 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 27.1 25.9 105 26.8 24.2 111
BLACK BEAR 8170 -M 38.8 * 47.5 46.8 101
CANYON 7870 17.7 9.5 186 23.3 18.2 128
FISHER CREEK 9100 46.3 37.7 123 43.2 42.9 101
MADISON PLATEAU 7750 31.6 22.4 141 35.9 31.1 115
NORTHEAST ENTRANCE 7350 6.6 5.6 118 15.4 15.3 101
PARKER PEAK 9400 30.4 24.5 124 -M 20.2 *
SYLVAN LAKE 8420 20.7 22.6 92 30.0 25.5 118
THUMB DIVIDE 7980 15.3 12.9 119 23.2 22.6 103
TWO OCEAN PLATEAU 9240 -M 31.6 * -M 33.0 *
WHISKEY CREEK 6800 19.6 13.1 150 27.7 24.8 112
WHITE MILL 8700 30.6 26.0 118 30.8 32.0 96
WOLVERINE 7650 6.1 5.7 107 15.6 15.8 99
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Basin wide percent of average 122 107
WIND RIVER
BURROUGHS CREEK 8750 15.9 12.0 132 20.7 20.0 103
COLD SPRINGS 9630 2.2 4.6 48 12.1 14.6 83
DEER PARK 9700 15.4 16.8 92 23.2 27.7 84
HOBBS PARK 10100 15.8 17.5 90 18.5 17.8 104
LITTLE WARM 9370 8.1 9.6 84 16.2 17.5 93
SOUTH PASS 9040 13.8 16.6 83 20.2 23.5 86
ST. LAWRENCE ALT 8620 3.2 5.2 62 10.1 12.8 79
TOGWOTEE PASS 9580 29.8 28.1 106 33.7 29.8 113
TOWNSEND CREEK 8700 7.1 7.6 93 14.9 16.3 91
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Basin wide percent of average 94 94
BIGHORN BASIN
BALD MTN. 9380 19.4 23.5 83 18.6 22.2 84
BEAR TRAP MEADOW 8200 5.6 1.7 329 11.7 11.6 101
BLACKWATER 9780 29.1 28.7 101 27.4 25.5 107
BONE SPRINGS DIV 9350 20.5 17.5 117 21.5 19.2 112
EVENING STAR 9200 31.7 33.3 95 38.3 30.8 124
GRAVE SPRINGS 8550 11.3 9.8 115 13.1 13.9 94
KIRWIN 9550 12.9 12.5 103 16.8 14.9 113
MARQUETTE 8760 8.7 10.3 84 12.7 14.6 87
MIDDLE POWDER 7760 14.5 13.1 111 12.4 16.5 75
OWL CREEK 8975 .2 3.4 6 8.5 8.8 97
POWDER RIVER PASS 9480 11.8 9.5 124 17.4 16.6 105
SHELL CREEK 9580 17.6 16.8 105 19.0 17.6 108
SYLVAN LAKE 8420 20.7 22.6 92 30.0 25.5 118
SYLVAN ROAD 7120 7.4 6.0 123 23.3 21.1 110
TIMBER CREEK 7950 3.7 3.9 95 10.3 11.3 91
YOUNTS PEAK 8350 17.7 17.5 101 19.7 19.4 102
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Basin wide percent of average 101 104
SHOSHONE RIVER
BLACKWATER 9780 29.1 28.7 101 27.4 25.5 107
EVENING STAR 9200 31.7 33.3 95 38.3 30.8 124
KIRWIN 9550 12.9 12.5 103 16.8 14.9 113
MARQUETTE 8760 8.7 10.3 84 12.7 14.6 87
SYLVAN LAKE 8420 20.7 22.6 92 30.0 25.5 118
SYLVAN ROAD 7120 7.4 6.0 123 23.3 21.1 110
YOUNTS PEAK 8350 17.7 17.5 101 19.7 19.4 102
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Basin wide percent of average 98 111
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 1.7 329 11.7 11.6 101
BIG GOOSE 7990 10.7 10.6 101 16.3 13.8 118
BONE SPRINGS DIV 9350 20.5 17.5 117 21.5 19.2 112
BURGESS JUNCTION 7880 16.4 12.2 134 18.4 16.1 114
CLOUD PEAK RESERVOIR 9860 18.9 15.7 120 20.0 18.1 110
DOME LAKE 8880 12.7 12.1 105 19.4 17.7 110
GRAVE SPRINGS 8550 11.3 9.8 115 13.1 13.9 94
HANSEN SAWMILL 8360 3.6 3.9 92 11.7 11.6 101
MIDDLE POWDER 7760 14.5 13.1 111 12.4 16.5 75
POWDER RIVER PASS 9480 11.8 9.5 124 17.4 16.6 105
SUCKER CREEK 8880 17.2 11.8 146 22.0 18.4 120
TIE CREEK 6870 6.7 2.8 239 15.6 14.3 109
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Basin wide percent of average 124 106
BELLE FOURCHE
BLIND PARK 6890 3.6 2.7 133 15.1 14.9 101
COLE CANYON 5910 5.9 2.5 236 12.1 10.3 117
NORTH RAPID CREEK 6130 8.2 1.9 432 14.1 12.0 118
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Basin wide percent of average 249 111
UPPER N. PLATTE RIVER
COLUMBINE 9160 24.0 18.1 133 33.3 29.9 111
DIVIDE PEAK 8880 22.2 17.0 131 27.6 25.0 110
ELK RIVER 8700 18.5 12.0 154 27.0 23.7 114
JOE WRIGHT 10120 28.0 25.0 112 34.1 31.1 110
NORTH FRENCH CREEK 10130 34.2 34.4 99 35.3 30.8 115
OLD BATTLE 10000 38.3 37.2 103 45.8 40.9 112
SAGE CREEK BASIN 7850 11.5 9.9 116 19.8 14.5 137
SOUTH BRUSH CREEK 8440 8.2 9.3 88 20.6 20.9 99
TOWER 10500 49.2 52.4 94 48.1 46.4 104
WEBBER SPRINGS 9250 26.5 22.8 116 36.2 32.0 113
WILLOW CREEK PASS 9540 20.9 13.5 155 19.7 16.3 121
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Basin wide percent of average 112 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.4 26.9 80 26.8 28.0 96
CASPER MTN. 7900 16.0 15.3 105 19.2 20.6 93
DEADMAN HILL 10220 20.1 19.5 103 23.8 21.8 109
DEER PARK 9700 15.4 16.8 92 23.2 27.7 84
LAPRELE CREEK 8375 5.6 5.6 100 15.5 17.3 90
RENO HILL 8400 17.1 12.9 133 23.7 21.3 111
ROACH 9700 20.1 16.9 119 26.6 23.3 114
SAND LAKE 10050 33.7 36.9 91 35.4 30.5 116
SOUTH PASS 9040 13.8 16.6 83 20.2 23.5 86
WINDY PEAK 7900 6.1 3.5 174 13.4 14.2 94
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Basin wide percent of average 99 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.6 2.9 159 19.5 19.1 102
DIVIDE PEAK 8880 22.2 17.0 131 27.6 25.0 110
OLD BATTLE 10000 38.3 37.2 103 45.8 40.9 112
SANDSTONE RS 8150 12.9 7.0 184 24.6 22.6 109
WHISKEY PARK 8950 36.5 29.5 124 41.2 34.9 118
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Basin wide percent of average 122 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.7 11.9 90 15.1 16.5 92
BLIND BULL SUM 8650 26.6 26.9 99 19.6 25.8 76
EAST RIM DIVIDE 7930 6.5 11.8 55 12.5 14.3 87
ELKHART PARK G.S. 9400 9.6 11.6 83 13.2 16.6 80
GROS VENTRE SUMMIT 8750 12.6 12.1 104 16.0 15.7 102
GUNSIGHT PASS 9820 11.9 -M * 16.9 -M *
KENDALL R.S. 7740 7.0 7.6 92 15.2 17.0 89
LOOMIS PARK 8240 11.1 12.5 89 19.9 20.5 97
NEW FORK LAKE 8340 5.1 6.6 77 10.6 13.9 76
SNIDER BASIN 8060 9.9 10.8 92 15.8 18.9 84
SPRING CREEK DIVIDE 9000 23.7 27.4 86 26.6 30.8 86
TRIPLE PEAK 8500 22.3 21.4 104 32.0 29.4 109
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Basin wide percent of average 90 90
LOWER GREEN RIVER
HAMS FORK 7840 6.3 4.0 158 11.9 15.3 78
HEWINTA 9519 9.3 7.3 127 19.5 18.4 106
HICKERSON PARK 9145 2.2 4.1 54 11.1 10.7 104
HOLE-IN-ROCK 9150 2.0 3.4 59 11.8 10.2 116
INDIAN CREEK 9425 24.1 26.7 90 -M 30.1 *
KELLEY R.S. 8180 12.5 12.2 102 20.1 24.1 83
STEEL CREEK PARK 10200 19.1 18.9 101 21.5 20.9 103
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Basin wide percent of average 99 96
UPPER BEAR RIVER
BUG LAKE 7950 14.3 15.2 94 18.8 23.0 82
HAYDEN FORK 9212 11.6 10.7 108 26.3 25.9 102
KELLEY R.S. 8180 12.5 12.2 102 20.1 24.1 83
LILY LAKE 9156 11.7 9.2 127 20.5 21.8 94
MONTE CRISTO 8960 26.9 26.3 102 29.3 31.2 94
SALT RIVER SUMMIT 7760 11.0 8.4 131 18.1 22.1 82
TRIAL LAKE 9992 23.1 25.7 90 27.7 30.3 91
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Basin wide percent of average 103 90
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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.