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: FEBRUARY 27 , 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 15.0 15.7 96 21.6 18.2 119
COTTONWOOD CREEK 7670 19.7 17.9 110 21.1 22.5 94
GRAND TARGHEE 9260 39.5 -M * 26.9 -M *
GRANITE CREEK 6770 14.4 15.7 92 19.7 17.1 115
GRASSY LAKE 7265 26.2 28.9 91 33.7 30.4 111
GROS VENTRE SUMMIT 8750 11.1 11.2 99 12.2 10.5 116
GUNSIGHT PASS 9820 10.4 -M * 12.0 -M *
LEWIS LAKE DIVIDE 7850 26.1 29.0 90 30.7 30.8 100
PHILLIPS BENCH 8200 25.6 23.4 109 28.6 24.1 119
SALT RIVER SUMMIT 7760 11.3 11.9 95 13.3 15.5 86
SNAKE RIVER STATION 6920 14.2 16.2 88 22.3 19.1 117
SPRING CREEK DIVIDE 9000 18.9 21.7 87 19.3 22.1 87
THUMB DIVIDE 7980 13.5 15.0 90 16.2 15.7 103
TOGWOTEE PASS 9580 22.1 20.3 109 24.3 20.3 120
TWO OCEAN PLATEAU 9240 29.0 22.9 127 23.3 22.9 102
WILLOW CREEK 8380 25.9 24.9 104 31.5 26.5 119
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Basin wide percent of average 99 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.3 19.5 109 20.0 16.8 119
BLACK BEAR 8170 38.3 32.4 118 34.6 32.5 106
CANYON 7870 14.2 11.2 127 17.6 12.8 138
FISHER CREEK 9100 35.0 29.1 120 31.9 30.0 106
MADISON PLATEAU 7750 24.5 20.4 120 27.5 21.6 127
NORTHEAST ENTRANCE 7350 7.8 9.6 81 11.2 10.6 106
PARKER PEAK 9400 21.2 18.0 118 19.7 13.4 147
SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124
THUMB DIVIDE 7980 13.5 15.0 90 16.2 15.7 103
TWO OCEAN PLATEAU 9240 29.0 22.9 127 23.3 22.9 102
WHISKEY CREEK 6800 15.7 14.1 111 22.0 17.0 129
WHITE MILL 8700 22.6 19.9 114 23.1 22.2 104
WOLVERINE 7650 8.7 10.5 83 11.1 11.0 101
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Basin wide percent of average 112 115
WIND RIVER
BURROUGHS CREEK 8750 13.0 12.6 103 15.8 13.4 118
COLD SPRINGS 9630 5.4 7.2 75 8.4 8.3 101
DEER PARK 9700 11.6 14.5 80 16.1 17.5 92
HOBBS PARK 10100 10.3 11.8 87 10.9 9.7 112
LITTLE WARM 9370 7.9 9.4 84 11.2 10.7 105
SOUTH PASS 9040 10.8 13.9 78 13.6 14.7 93
ST. LAWRENCE ALT 8620 5.2 5.9 88 6.8 6.9 99
TOGWOTEE PASS 9580 22.1 20.3 109 24.3 20.3 120
TOWNSEND CREEK 8700 6.4 6.9 93 9.5 8.7 109
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Basin wide percent of average 90 106
BIGHORN BASIN
BALD MTN. 9380 13.0 15.8 82 12.6 13.9 91
BEAR TRAP MEADOW 8200 6.4 4.3 149 6.8 6.3 108
BLACKWATER 9780 20.1 20.2 100 18.9 16.9 112
BONE SPRINGS DIV 9350 12.9 13.0 99 14.2 11.4 125
EVENING STAR 9200 24.4 24.7 99 26.6 21.4 124
GRAVE SPRINGS 8550 7.0 7.2 97 8.0 7.6 105
KIRWIN 9550 10.1 9.1 111 12.1 9.0 134
MARQUETTE 8760 3.6 6.8 53 7.4 7.3 101
MIDDLE POWDER 7760 7.8 8.9 88 7.4 9.4 79
OWL CREEK 8975 4.2 4.1 102 5.5 4.3 128
POWDER RIVER PASS 9480 9.3 8.7 107 11.2 9.8 114
SHELL CREEK 9580 12.6 11.7 108 12.3 10.6 116
SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124
SYLVAN ROAD 7120 9.3 11.3 82 18.0 15.4 117
TIMBER CREEK 7950 2.8 4.2 67 6.3 5.3 119
YOUNTS PEAK 8350 14.0 14.5 97 15.2 13.4 113
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Basin wide percent of average 95 114
SHOSHONE RIVER
BLACKWATER 9780 20.1 20.2 100 18.9 16.9 112
EVENING STAR 9200 24.4 24.7 99 26.6 21.4 124
KIRWIN 9550 10.1 9.1 111 12.1 9.0 134
MARQUETTE 8760 3.6 6.8 53 7.4 7.3 101
SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124
SYLVAN ROAD 7120 9.3 11.3 82 18.0 15.4 117
YOUNTS PEAK 8350 14.0 14.5 97 15.2 13.4 113
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Basin wide percent of average 94 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.4 4.3 149 6.8 6.3 108
BIG GOOSE 7990 6.1 7.5 81 9.1 6.7 136
BONE SPRINGS DIV 9350 12.9 13.0 99 14.2 11.4 125
BURGESS JUNCTION 7880 8.6 8.9 97 10.3 9.3 111
CLOUD PEAK RESERVOIR 9860 11.7 9.9 118 11.8 9.6 123
DOME LAKE 8880 8.0 9.5 84 11.5 10.0 115
GRAVE SPRINGS 8550 7.0 7.2 97 8.0 7.6 105
HANSEN SAWMILL 8360 5.0 5.1 98 7.3 6.2 118
MIDDLE POWDER 7760 7.8 8.9 88 7.4 9.4 79
POWDER RIVER PASS 9480 9.3 8.7 107 11.2 9.8 114
SUCKER CREEK 8880 10.1 9.0 112 12.1 10.3 117
TIE CREEK 6870 4.9 4.9 100 8.8 7.8 113
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Basin wide percent of average 101 114
BELLE FOURCHE
BLIND PARK 6890 5.8 7.0 83 8.7 9.1 96
COLE CANYON 5910 4.8 5.6 86 6.0 5.4 111
NORTH RAPID CREEK 6130 6.9 6.6 105 7.0 7.3 96
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Basin wide percent of average 91 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 22.1 21.4 103 24.3 20.4 119
DIVIDE PEAK 8880 19.8 15.3 129 20.1 16.7 120
ELK RIVER 8700 21.5 15.7 137 20.5 15.7 131
JOE WRIGHT 10120 19.8 16.9 117 23.4 19.7 119
NORTH FRENCH CREEK 10130 25.4 22.1 115 25.1 19.8 127
OLD BATTLE 10000 28.0 25.6 109 32.6 27.8 117
SAGE CREEK BASIN 7850 14.8 8.9 166 15.8 9.7 163
SOUTH BRUSH CREEK 8440 10.9 9.7 112 14.3 13.1 109
TOWER 10500 -M 36.8 * -M 31.3 *
WEBBER SPRINGS 9250 21.8 20.7 105 25.4 21.6 118
WILLOW CREEK PASS 9540 13.2 9.4 140 13.5 10.1 134
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Basin wide percent of average 119 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 17.4 18.6 94 18.1 17.1 106
CASPER MTN. 7900 9.2 11.1 83 11.0 10.8 102
DEADMAN HILL 10220 14.2 12.7 112 14.8 13.0 114
DEER PARK 9700 11.6 14.5 80 16.1 17.5 92
LAPRELE CREEK 8375 5.6 8.7 64 8.3 9.8 85
RENO HILL 8400 9.5 10.1 94 11.1 11.3 98
ROACH 9700 16.4 13.6 121 18.9 14.5 130
SAND LAKE 10050 22.5 24.5 92 22.5 18.9 119
SOUTH PASS 9040 10.8 13.9 78 13.6 14.7 93
WINDY PEAK 7900 6.5 5.8 112 7.8 8.3 94
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Basin wide percent of average 93 105
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.9 9.4 148 14.5 12.1 120
DIVIDE PEAK 8880 19.8 15.3 129 20.1 16.7 120
OLD BATTLE 10000 28.0 25.6 109 32.6 27.8 117
SANDSTONE RS 8150 15.0 12.2 123 18.6 15.3 122
WHISKEY PARK 8950 26.8 23.2 116 29.4 23.0 128
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Basin wide percent of average 121 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.7 11.9 90 10.8 11.1 97
BLIND BULL SUM 8650 20.2 22.5 90 15.3 18.7 82
EAST RIM DIVIDE 7930 7.3 10.8 68 9.7 10.0 97
ELKHART PARK G.S. 9400 9.4 10.9 86 10.1 10.7 94
GROS VENTRE SUMMIT 8750 11.1 11.2 99 12.2 10.5 116
GUNSIGHT PASS 9820 10.4 -M * 12.0 -M *
KENDALL R.S. 7740 9.6 12.1 79 11.5 12.2 94
LOOMIS PARK 8240 13.1 14.1 93 14.8 14.5 102
NEW FORK LAKE 8340 8.0 9.4 85 8.1 9.4 86
SNIDER BASIN 8060 10.9 12.2 89 12.0 13.5 89
SPRING CREEK DIVIDE 9000 18.9 21.7 87 19.3 22.1 87
TRIPLE PEAK 8500 19.8 20.4 97 22.9 20.2 113
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Basin wide percent of average 88 96
LOWER GREEN RIVER
HAMS FORK 7840 9.9 10.7 93 8.4 10.2 82
HEWINTA 9519 10.5 8.8 119 14.1 11.4 124
HICKERSON PARK 9145 6.0 5.7 105 8.2 6.1 134
HOLE-IN-ROCK 9150 5.1 5.6 91 8.4 5.7 147
INDIAN CREEK 9425 19.1 21.7 88 -M 20.7 *
KELLEY R.S. 8180 11.9 13.6 88 14.5 16.9 86
STEEL CREEK PARK 10200 12.2 12.3 99 15.7 12.6 125
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Basin wide percent of average 95 110
UPPER BEAR RIVER
BUG LAKE 7950 15.4 16.7 92 14.8 15.8 94
HAYDEN FORK 9212 16.3 12.8 127 20.1 16.7 120
KELLEY R.S. 8180 11.9 13.6 88 14.5 16.9 86
LILY LAKE 9156 12.4 10.6 117 15.0 14.0 107
MONTE CRISTO 8960 24.3 24.1 101 23.1 20.7 112
SALT RIVER SUMMIT 7760 11.3 11.9 95 13.3 15.5 86
TRIAL LAKE 9992 17.8 20.1 89 21.2 20.0 106
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Basin wide percent of average 100 102
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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.