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 SATURDAY: MARCH 8 , 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 16.7 93 22.6 19.4 116
COTTONWOOD CREEK 7670 20.9 19.9 105 21.9 24.1 91
GRAND TARGHEE 9260 41.6 -M * 28.0 -M *
GRANITE CREEK 6770 15.2 17.0 89 20.4 18.2 112
GRASSY LAKE 7265 27.8 31.2 89 35.1 32.3 109
GROS VENTRE SUMMIT 8750 11.5 12.2 94 12.6 11.3 112
GUNSIGHT PASS 9820 10.6 -M * 12.5 -M *
LEWIS LAKE DIVIDE 7850 27.4 31.2 88 31.8 33.0 96
PHILLIPS BENCH 8200 27.2 25.2 108 29.8 25.8 116
SALT RIVER SUMMIT 7760 11.7 12.8 91 13.7 16.5 83
SNAKE RIVER STATION 6920 15.3 17.5 87 23.2 20.2 115
SPRING CREEK DIVIDE 9000 19.3 23.3 83 19.9 23.4 85
THUMB DIVIDE 7980 14.5 16.4 88 17.1 16.8 102
TOGWOTEE PASS 9580 23.5 21.7 108 25.6 21.6 119
TWO OCEAN PLATEAU 9240 31.0 24.4 127 23.3 24.5 95
WILLOW CREEK 8380 27.5 26.7 103 33.0 28.3 117
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Basin wide percent of average 97 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 22.2 21.0 106 20.9 17.9 117
BLACK BEAR 8170 40.3 35.1 115 -M 35.1 *
CANYON 7870 14.9 12.2 122 18.4 13.6 135
FISHER CREEK 9100 36.8 31.1 118 -M 32.1 *
MADISON PLATEAU 7750 26.2 22.3 117 28.9 23.2 125
NORTHEAST ENTRANCE 7350 8.3 10.3 81 11.7 11.2 104
PARKER PEAK 9400 22.4 19.2 117 -M 14.3 *
SYLVAN LAKE 8420 18.3 19.8 92 22.9 18.6 123
THUMB DIVIDE 7980 14.5 16.4 88 17.1 16.8 102
TWO OCEAN PLATEAU 9240 31.0 24.4 127 23.3 24.5 95
WHISKEY CREEK 6800 16.5 15.4 107 22.6 18.3 123
WHITE MILL 8700 23.7 21.5 110 -M 23.8 *
WOLVERINE 7650 9.0 11.1 81 11.5 11.6 99
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Basin wide percent of average 109 114
WIND RIVER
BURROUGHS CREEK 8750 13.4 13.2 102 16.3 14.3 114
COLD SPRINGS 9630 5.6 7.7 73 8.6 8.8 98
DEER PARK 9700 13.1 14.8 89 17.6 18.8 94
HOBBS PARK 10100 11.7 12.6 93 12.1 10.4 116
LITTLE WARM 9370 8.2 10.1 81 11.6 11.4 102
SOUTH PASS 9040 12.4 14.8 84 15.3 15.7 97
ST. LAWRENCE ALT 8620 6.1 6.3 97 7.6 7.3 104
TOGWOTEE PASS 9580 23.5 21.7 108 25.6 21.6 119
TOWNSEND CREEK 8700 7.7 7.3 105 10.9 9.4 116
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Basin wide percent of average 94 107
BIGHORN BASIN
BALD MTN. 9380 14.6 16.8 87 13.6 14.8 92
BEAR TRAP MEADOW 8200 7.5 4.7 160 7.7 6.7 115
BLACKWATER 9780 21.1 21.5 98 19.7 18.0 109
BONE SPRINGS DIV 9350 14.7 13.9 106 15.3 12.2 125
EVENING STAR 9200 25.5 26.3 97 -M 22.6 *
GRAVE SPRINGS 8550 8.3 7.8 106 9.1 8.2 111
KIRWIN 9550 10.3 9.7 106 12.6 9.6 131
MARQUETTE 8760 4.7 7.2 65 8.1 7.9 103
MIDDLE POWDER 7760 9.9 9.6 103 8.1 10.1 80
OWL CREEK 8975 4.7 4.4 107 5.8 4.6 126
POWDER RIVER PASS 9480 10.7 9.2 116 12.7 10.5 121
SHELL CREEK 9580 13.7 12.4 110 13.3 11.3 118
SYLVAN LAKE 8420 18.3 19.8 92 22.9 18.6 123
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.1 116
TIMBER CREEK 7950 3.5 4.5 78 6.9 5.7 121
YOUNTS PEAK 8350 14.6 15.3 95 15.5 14.2 109
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Basin wide percent of average 98 113
SHOSHONE RIVER
BLACKWATER 9780 21.1 21.5 98 19.7 18.0 109
EVENING STAR 9200 25.5 26.3 97 -M 22.6 *
KIRWIN 9550 10.3 9.7 106 12.6 9.6 131
MARQUETTE 8760 4.7 7.2 65 8.1 7.9 103
SYLVAN LAKE 8420 18.3 19.8 92 22.9 18.6 123
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.1 116
YOUNTS PEAK 8350 14.6 15.3 95 15.5 14.2 109
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Basin wide percent of average 93 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.5 4.7 160 7.7 6.7 115
BIG GOOSE 7990 7.1 8.2 87 10.1 7.0 144
BONE SPRINGS DIV 9350 14.7 13.9 106 15.3 12.2 125
BURGESS JUNCTION 7880 10.7 9.5 113 12.1 10.0 121
CLOUD PEAK RESERVOIR 9860 13.4 10.7 125 13.1 10.3 127
DOME LAKE 8880 9.2 10.0 92 12.6 10.7 118
GRAVE SPRINGS 8550 8.3 7.8 106 9.1 8.2 111
HANSEN SAWMILL 8360 5.4 5.5 98 7.6 6.7 113
MIDDLE POWDER 7760 9.9 9.6 103 8.1 10.1 80
POWDER RIVER PASS 9480 10.7 9.2 116 12.7 10.5 121
SUCKER CREEK 8880 12.1 9.7 125 14.1 11.1 127
TIE CREEK 6870 6.6 5.4 122 10.5 8.2 128
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Basin wide percent of average 111 119
BELLE FOURCHE
BLIND PARK 6890 6.9 7.8 88 9.6 9.7 99
COLE CANYON 5910 5.5 5.9 93 6.7 5.8 116
NORTH RAPID CREEK 6130 8.1 7.1 114 7.8 7.7 101
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Basin wide percent of average 99 104
UPPER N. PLATTE RIVER
COLUMBINE 9160 23.6 22.9 103 25.0 21.9 114
DIVIDE PEAK 8880 20.9 16.6 126 21.0 17.9 117
ELK RIVER 8700 22.5 16.9 133 21.2 16.9 125
JOE WRIGHT 10120 20.7 18.1 114 24.1 21.2 114
NORTH FRENCH CREEK 10130 27.1 24.0 113 26.3 21.2 124
OLD BATTLE 10000 29.0 27.8 104 33.2 30.0 111
SAGE CREEK BASIN 7850 16.3 9.6 170 16.6 10.4 160
SOUTH BRUSH CREEK 8440 12.4 10.8 115 15.5 14.0 111
TOWER 10500 38.3 39.4 97 30.8 33.5 92
WEBBER SPRINGS 9250 22.9 22.8 100 26.7 23.1 116
WILLOW CREEK PASS 9540 13.9 10.1 138 14.1 10.9 129
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Basin wide percent of average 113 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.2 20.0 91 18.9 18.5 102
CASPER MTN. 7900 11.6 11.9 97 12.6 11.7 108
DEADMAN HILL 10220 15.2 13.6 112 15.6 14.1 111
DEER PARK 9700 13.1 14.8 89 17.6 18.8 94
LAPRELE CREEK 8375 6.7 9.5 71 9.4 10.6 89
RENO HILL 8400 11.8 11.1 106 13.7 12.2 112
ROACH 9700 17.0 14.6 116 19.5 15.8 123
SAND LAKE 10050 24.3 26.9 90 24.2 20.3 119
SOUTH PASS 9040 12.4 14.8 84 15.3 15.7 97
WINDY PEAK 7900 7.0 6.6 106 8.5 8.9 96
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Basin wide percent of average 95 106
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.2 10.5 145 15.3 13.1 117
DIVIDE PEAK 8880 20.9 16.6 126 21.0 17.9 117
OLD BATTLE 10000 29.0 27.8 104 33.2 30.0 111
SANDSTONE RS 8150 15.8 13.4 118 19.6 16.4 120
WHISKEY PARK 8950 29.0 25.5 114 30.7 24.6 125
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Basin wide percent of average 117 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.3 12.7 89 11.4 11.9 96
BLIND BULL SUM 8650 21.3 24.4 87 15.8 19.8 80
EAST RIM DIVIDE 7930 7.5 11.6 65 9.7 10.7 91
ELKHART PARK G.S. 9400 9.7 11.7 83 10.5 11.5 91
GROS VENTRE SUMMIT 8750 11.5 12.2 94 12.6 11.3 112
GUNSIGHT PASS 9820 10.6 -M * 12.5 -M *
KENDALL R.S. 7740 10.0 13.2 76 11.9 13.1 91
LOOMIS PARK 8240 13.6 15.4 88 15.2 15.5 98
NEW FORK LAKE 8340 8.2 10.1 81 8.4 10.0 84
SNIDER BASIN 8060 11.3 13.0 87 12.4 14.3 87
SPRING CREEK DIVIDE 9000 19.3 23.3 83 19.9 23.4 85
TRIPLE PEAK 8500 21.0 22.0 95 24.2 21.8 111
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Basin wide percent of average 85 93
LOWER GREEN RIVER
HAMS FORK 7840 10.5 11.7 90 8.7 10.8 81
HEWINTA 9519 12.0 9.7 124 14.7 12.3 120
HICKERSON PARK 9145 6.5 6.2 105 8.8 6.6 133
HOLE-IN-ROCK 9150 5.5 6.0 92 8.8 6.1 144
INDIAN CREEK 9425 20.2 23.7 85 -M 22.1 *
KELLEY R.S. 8180 12.5 14.8 84 15.1 17.9 84
STEEL CREEK PARK 10200 13.1 13.4 98 16.3 13.6 120
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Basin wide percent of average 94 108
UPPER BEAR RIVER
BUG LAKE 7950 15.9 18.1 88 15.4 16.9 91
HAYDEN FORK 9212 17.4 14.0 124 21.1 18.0 117
KELLEY R.S. 8180 12.5 14.8 84 15.1 17.9 84
LILY LAKE 9156 13.1 11.4 115 15.9 14.9 107
MONTE CRISTO 8960 25.3 26.2 97 23.9 22.2 108
SALT RIVER SUMMIT 7760 11.7 12.8 91 13.7 16.5 83
TRIAL LAKE 9992 18.9 21.8 87 21.9 21.6 101
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Basin wide percent of average 96 99
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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.