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 TUESDAY: MARCH 4 , 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 16.3 96 22.1 18.9 117
COTTONWOOD CREEK 7670 20.4 19.1 107 21.4 23.5 91
GRAND TARGHEE 9260 41.1 -M * 27.6 -M *
GRANITE CREEK 6770 14.9 16.5 90 20.1 17.8 113
GRASSY LAKE 7265 27.1 30.2 90 34.4 31.6 109
GROS VENTRE SUMMIT 8750 11.4 11.8 97 12.5 11.0 114
GUNSIGHT PASS 9820 10.5 -M * 12.3 -M *
LEWIS LAKE DIVIDE 7850 27.0 30.3 89 31.1 32.2 97
PHILLIPS BENCH 8200 26.6 24.5 109 29.2 25.1 116
SALT RIVER SUMMIT 7760 11.6 12.4 94 13.5 16.1 84
SNAKE RIVER STATION 6920 15.1 16.9 89 22.6 19.8 114
SPRING CREEK DIVIDE 9000 19.1 22.7 84 19.5 22.9 85
THUMB DIVIDE 7980 14.1 15.8 89 16.5 16.4 101
TOGWOTEE PASS 9580 22.7 21.1 108 24.8 21.1 118
TWO OCEAN PLATEAU 9240 30.2 23.8 127 23.3 23.9 97
WILLOW CREEK 8380 26.9 26.0 103 32.4 27.6 117
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Basin wide percent of average 98 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.9 20.2 108 20.7 17.4 119
BLACK BEAR 8170 -M 33.9 * -M 34.1 *
CANYON 7870 14.7 11.7 126 17.8 13.3 134
FISHER CREEK 9100 36.5 30.3 120 -M 31.3 *
MADISON PLATEAU 7750 25.9 21.4 121 28.5 22.6 126
NORTHEAST ENTRANCE 7350 8.1 10.0 81 11.5 11.0 105
PARKER PEAK 9400 22.0 18.6 118 -M 14.0 *
SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123
THUMB DIVIDE 7980 14.1 15.8 89 16.5 16.4 101
TWO OCEAN PLATEAU 9240 30.2 23.8 127 23.3 23.9 97
WHISKEY CREEK 6800 16.2 14.8 109 22.1 17.8 124
WHITE MILL 8700 23.3 20.8 112 -M 23.2 *
WOLVERINE 7650 8.8 10.8 81 11.2 11.4 98
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Basin wide percent of average 110 114
WIND RIVER
BURROUGHS CREEK 8750 13.2 12.9 102 16.0 14.0 114
COLD SPRINGS 9630 5.5 7.4 74 8.6 8.6 100
DEER PARK 9700 12.1 14.5 83 16.5 18.3 90
HOBBS PARK 10100 11.0 12.1 91 11.4 10.1 113
LITTLE WARM 9370 8.1 9.7 84 11.4 11.1 103
SOUTH PASS 9040 11.3 14.4 78 14.1 15.3 92
ST. LAWRENCE ALT 8620 5.6 6.1 92 7.1 7.1 100
TOGWOTEE PASS 9580 22.7 21.1 108 24.8 21.1 118
TOWNSEND CREEK 8700 6.9 7.1 97 9.9 9.1 109
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Basin wide percent of average 92 104
BIGHORN BASIN
BALD MTN. 9380 13.8 16.3 85 13.0 14.4 90
BEAR TRAP MEADOW 8200 7.0 4.5 156 7.4 6.5 114
BLACKWATER 9780 20.7 20.9 99 19.0 17.5 109
BONE SPRINGS DIV 9350 14.1 13.5 104 14.9 11.9 125
EVENING STAR 9200 25.3 25.6 99 -M 22.2 *
GRAVE SPRINGS 8550 7.9 7.5 105 8.7 8.0 109
KIRWIN 9550 10.2 9.3 110 12.5 9.4 133
MARQUETTE 8760 3.9 7.0 56 7.6 7.7 99
MIDDLE POWDER 7760 9.2 9.2 100 7.6 9.8 78
OWL CREEK 8975 4.4 4.2 105 5.5 4.5 122
POWDER RIVER PASS 9480 10.2 8.9 115 12.2 10.2 120
SHELL CREEK 9580 13.3 12.1 110 13.0 11.0 118
SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123
SYLVAN ROAD 7120 9.7 11.6 84 18.4 15.8 116
TIMBER CREEK 7950 3.2 4.3 74 6.6 5.5 120
YOUNTS PEAK 8350 14.3 14.9 96 15.1 13.9 109
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Basin wide percent of average 98 112
SHOSHONE RIVER
BLACKWATER 9780 20.7 20.9 99 19.0 17.5 109
EVENING STAR 9200 25.3 25.6 99 -M 22.2 *
KIRWIN 9550 10.2 9.3 110 12.5 9.4 133
MARQUETTE 8760 3.9 7.0 56 7.6 7.7 99
SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123
SYLVAN ROAD 7120 9.7 11.6 84 18.4 15.8 116
YOUNTS PEAK 8350 14.3 14.9 96 15.1 13.9 109
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Basin wide percent of average 94 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.0 4.5 156 7.4 6.5 114
BIG GOOSE 7990 6.8 7.9 86 9.7 6.9 141
BONE SPRINGS DIV 9350 14.1 13.5 104 14.9 11.9 125
BURGESS JUNCTION 7880 9.8 9.2 107 11.3 9.7 116
CLOUD PEAK RESERVOIR 9860 12.7 10.3 123 12.7 10.0 127
DOME LAKE 8880 8.8 9.7 91 12.1 10.4 116
GRAVE SPRINGS 8550 7.9 7.5 105 8.7 8.0 109
HANSEN SAWMILL 8360 5.3 5.3 100 7.5 6.4 117
MIDDLE POWDER 7760 9.2 9.2 100 7.6 9.8 78
POWDER RIVER PASS 9480 10.2 8.9 115 12.2 10.2 120
SUCKER CREEK 8880 11.3 9.4 120 13.1 10.7 122
TIE CREEK 6870 5.8 5.1 114 9.7 8.0 121
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Basin wide percent of average 108 117
BELLE FOURCHE
BLIND PARK 6890 6.1 7.4 82 8.9 9.5 94
COLE CANYON 5910 5.1 5.9 86 6.3 5.6 112
NORTH RAPID CREEK 6130 7.1 7.0 101 7.1 7.6 93
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Basin wide percent of average 90 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 22.4 22.4 100 24.6 21.3 115
DIVIDE PEAK 8880 20.6 16.0 129 20.8 17.4 120
ELK RIVER 8700 21.9 16.5 133 20.9 16.5 127
JOE WRIGHT 10120 20.2 17.6 115 23.9 20.6 116
NORTH FRENCH CREEK 10130 26.1 23.2 112 25.6 20.7 124
OLD BATTLE 10000 28.4 26.9 106 33.0 29.1 113
SAGE CREEK BASIN 7850 16.0 9.3 172 16.4 10.1 162
SOUTH BRUSH CREEK 8440 11.7 10.3 114 15.0 13.6 110
TOWER 10500 -M 38.3 * -M 32.6 *
WEBBER SPRINGS 9250 22.4 22.0 102 26.0 22.5 116
WILLOW CREEK PASS 9540 13.7 9.8 140 13.9 10.6 131
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Basin wide percent of average 117 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 17.6 19.4 91 18.4 17.9 103
CASPER MTN. 7900 10.7 11.5 93 11.8 11.3 104
DEADMAN HILL 10220 14.8 13.2 112 15.2 13.6 112
DEER PARK 9700 12.1 14.5 83 16.5 18.3 90
LAPRELE CREEK 8375 5.9 9.1 65 8.6 10.3 83
RENO HILL 8400 10.7 10.7 100 12.4 11.8 105
ROACH 9700 16.8 14.2 118 19.3 15.3 126
SAND LAKE 10050 23.3 25.9 90 23.2 19.7 118
SOUTH PASS 9040 11.3 14.4 78 14.1 15.3 92
WINDY PEAK 7900 6.6 6.2 106 8.0 8.7 92
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Basin wide percent of average 93 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.9 10.0 149 15.0 12.6 119
DIVIDE PEAK 8880 20.6 16.0 129 20.8 17.4 120
OLD BATTLE 10000 28.4 26.9 106 33.0 29.1 113
SANDSTONE RS 8150 15.5 12.8 121 19.2 16.0 120
WHISKEY PARK 8950 28.2 24.5 115 30.2 23.9 126
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Basin wide percent of average 119 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.0 12.4 89 11.1 11.6 96
BLIND BULL SUM 8650 21.0 23.6 89 15.6 19.4 80
EAST RIM DIVIDE 7930 7.4 11.3 65 9.6 10.4 92
ELKHART PARK G.S. 9400 9.5 11.4 83 10.1 11.2 90
GROS VENTRE SUMMIT 8750 11.4 11.8 97 12.5 11.0 114
GUNSIGHT PASS 9820 10.5 -M * 12.3 -M *
KENDALL R.S. 7740 9.8 12.7 77 11.6 12.8 91
LOOMIS PARK 8240 13.3 14.9 89 14.9 15.1 99
NEW FORK LAKE 8340 8.1 9.8 83 8.2 9.8 84
SNIDER BASIN 8060 11.1 12.7 87 12.1 14.0 86
SPRING CREEK DIVIDE 9000 19.1 22.7 84 19.5 22.9 85
TRIPLE PEAK 8500 20.4 21.3 96 23.5 21.2 111
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Basin wide percent of average 86 93
LOWER GREEN RIVER
HAMS FORK 7840 10.3 11.3 91 8.6 10.6 81
HEWINTA 9519 11.4 9.4 121 14.6 11.9 123
HICKERSON PARK 9145 6.4 6.0 107 8.7 6.4 136
HOLE-IN-ROCK 9150 5.5 5.9 93 8.7 5.9 147
INDIAN CREEK 9425 19.7 22.9 86 -M 21.5 *
KELLEY R.S. 8180 12.3 14.3 86 14.8 17.5 85
STEEL CREEK PARK 10200 12.9 13.0 99 16.1 13.2 122
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Basin wide percent of average 95 109
UPPER BEAR RIVER
BUG LAKE 7950 15.7 17.5 90 15.2 16.5 92
HAYDEN FORK 9212 16.9 13.5 125 20.6 17.5 118
KELLEY R.S. 8180 12.3 14.3 86 14.8 17.5 85
LILY LAKE 9156 12.9 11.1 116 15.6 14.6 107
MONTE CRISTO 8960 25.0 25.4 98 23.6 21.6 109
SALT RIVER SUMMIT 7760 11.6 12.4 94 13.5 16.1 84
TRIAL LAKE 9992 18.7 21.1 89 21.6 21.0 103
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Basin wide percent of average 98 100
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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.