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: MARCH 19 , 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 16.3 17.6 93 23.6 20.5 115
COTTONWOOD CREEK 7670 22.1 22.3 99 22.4 25.8 87
GRAND TARGHEE 9260 45.7 -M * 32.3 -M *
GRANITE CREEK 6770 16.3 18.3 89 21.3 19.2 111
GRASSY LAKE 7265 31.3 33.7 93 -M 34.3 *
GROS VENTRE SUMMIT 8750 11.8 13.3 89 12.8 12.1 106
GUNSIGHT PASS 9820 10.9 -M * 12.9 -M *
LEWIS LAKE DIVIDE 7850 30.2 33.6 90 34.1 35.0 97
PHILLIPS BENCH 8200 30.1 27.2 111 32.0 27.5 116
SALT RIVER SUMMIT 7760 12.5 13.7 91 14.5 17.6 82
SNAKE RIVER STATION 6920 17.3 18.6 93 24.4 21.3 115
SPRING CREEK DIVIDE 9000 20.6 25.0 82 21.3 25.0 85
THUMB DIVIDE 7980 15.4 18.0 86 17.8 17.9 99
TOGWOTEE PASS 9580 24.7 23.3 106 27.0 23.1 117
TWO OCEAN PLATEAU 9240 32.7 26.2 125 -M 26.2 *
WILLOW CREEK 8380 29.2 28.7 102 34.2 30.3 113
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Basin wide percent of average 97 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 23.2 22.3 104 21.7 19.0 114
BLACK BEAR 8170 42.1 37.3 113 37.6 38.0 99
CANYON 7870 15.6 13.1 119 18.9 14.6 129
FISHER CREEK 9100 37.5 33.1 113 34.1 34.3 99
MADISON PLATEAU 7750 27.1 23.7 114 29.7 25.0 119
NORTHEAST ENTRANCE 7350 -M 10.8 * -M 12.0 *
PARKER PEAK 9400 23.7 20.3 117 21.7 15.3 142
SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121
THUMB DIVIDE 7980 15.4 18.0 86 17.8 17.9 99
TWO OCEAN PLATEAU 9240 32.7 26.2 125 -M 26.2 *
WHISKEY CREEK 6800 17.0 16.3 104 23.2 19.7 118
WHITE MILL 8700 24.7 22.9 108 24.4 25.5 96
WOLVERINE 7650 9.9 11.4 87 12.3 12.2 101
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Basin wide percent of average 109 110
WIND RIVER
BURROUGHS CREEK 8750 14.2 13.9 102 17.1 15.3 112
COLD SPRINGS 9630 5.9 8.3 71 9.0 9.6 94
DEER PARK 9700 13.9 15.7 89 18.3 20.3 90
HOBBS PARK 10100 12.5 13.5 93 12.9 11.4 113
LITTLE WARM 9370 8.7 10.9 80 12.2 12.3 99
SOUTH PASS 9040 13.1 15.9 82 16.0 17.0 94
ST. LAWRENCE ALT 8620 6.5 6.7 97 7.9 7.9 100
TOGWOTEE PASS 9580 24.7 23.3 106 27.0 23.1 117
TOWNSEND CREEK 8700 8.5 8.0 106 11.6 10.3 113
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Basin wide percent of average 93 104
BIGHORN BASIN
BALD MTN. 9380 15.2 18.1 84 14.1 16.0 88
BEAR TRAP MEADOW 8200 8.1 5.1 159 8.3 7.3 114
BLACKWATER 9780 22.3 23.0 97 20.7 19.2 108
BONE SPRINGS DIV 9350 15.3 14.9 103 15.8 13.3 119
EVENING STAR 9200 27.0 27.9 97 30.3 23.9 127
GRAVE SPRINGS 8550 9.3 8.5 109 9.9 8.9 111
KIRWIN 9550 10.9 10.4 105 12.9 10.3 125
MARQUETTE 8760 5.4 8.0 68 8.8 8.6 102
MIDDLE POWDER 7760 10.5 10.6 99 8.7 11.1 78
OWL CREEK 8975 5.1 5.0 102 6.1 5.1 120
POWDER RIVER PASS 9480 10.9 10.0 109 13.1 11.3 116
SHELL CREEK 9580 14.2 13.4 106 13.8 12.1 114
SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121
SYLVAN ROAD 7120 10.7 12.3 87 19.3 16.9 114
TIMBER CREEK 7950 3.9 5.2 75 7.5 6.4 117
YOUNTS PEAK 8350 15.2 16.2 94 16.2 15.2 107
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Basin wide percent of average 97 112
SHOSHONE RIVER
BLACKWATER 9780 22.3 23.0 97 20.7 19.2 108
EVENING STAR 9200 27.0 27.9 97 30.3 23.9 127
KIRWIN 9550 10.9 10.4 105 12.9 10.3 125
MARQUETTE 8760 5.4 8.0 68 8.8 8.6 102
SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121
SYLVAN ROAD 7120 10.7 12.3 87 19.3 16.9 114
YOUNTS PEAK 8350 15.2 16.2 94 16.2 15.2 107
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Basin wide percent of average 93 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.1 5.1 159 8.3 7.3 114
BIG GOOSE 7990 7.5 9.1 82 10.5 7.6 138
BONE SPRINGS DIV 9350 15.3 14.9 103 15.8 13.3 119
BURGESS JUNCTION 7880 11.0 10.4 106 12.6 10.9 116
CLOUD PEAK RESERVOIR 9860 14.0 11.9 118 13.8 11.4 121
DOME LAKE 8880 9.7 11.1 87 13.0 11.7 111
GRAVE SPRINGS 8550 9.3 8.5 109 9.9 8.9 111
HANSEN SAWMILL 8360 5.9 6.0 98 8.2 7.3 112
MIDDLE POWDER 7760 10.5 10.6 99 8.7 11.1 78
POWDER RIVER PASS 9480 10.9 10.0 109 13.1 11.3 116
SUCKER CREEK 8880 12.7 10.5 121 14.7 12.1 121
TIE CREEK 6870 6.8 6.1 111 10.8 8.9 121
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Basin wide percent of average 107 114
BELLE FOURCHE
BLIND PARK 6890 7.0 8.5 82 9.8 10.3 95
COLE CANYON 5910 5.4 6.4 84 6.9 6.1 113
NORTH RAPID CREEK 6130 7.8 7.7 101 7.9 8.1 98
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Basin wide percent of average 89 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 25.5 24.2 105 26.3 23.5 112
DIVIDE PEAK 8880 21.1 18.3 115 21.6 19.3 112
ELK RIVER 8700 24.2 18.2 133 21.9 18.2 120
JOE WRIGHT 10120 21.3 19.6 109 24.9 22.9 109
NORTH FRENCH CREEK 10130 28.4 26.4 108 27.4 22.9 120
OLD BATTLE 10000 30.8 30.0 103 33.7 32.3 104
SAGE CREEK BASIN 7850 16.5 10.6 156 16.8 11.2 150
SOUTH BRUSH CREEK 8440 12.7 12.1 105 15.8 15.0 105
TOWER 10500 39.6 42.3 94 -M 35.9 *
WEBBER SPRINGS 9250 24.0 25.0 96 27.7 24.9 111
WILLOW CREEK PASS 9540 14.4 10.9 132 14.4 11.8 122
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Basin wide percent of average 109 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.3 21.7 89 19.9 20.1 99
CASPER MTN. 7900 12.2 12.9 95 13.1 12.8 102
DEADMAN HILL 10220 15.7 14.8 106 16.2 15.4 105
DEER PARK 9700 13.9 15.7 89 18.3 20.3 90
LAPRELE CREEK 8375 7.1 10.3 69 9.8 11.5 85
RENO HILL 8400 12.3 12.5 98 14.0 13.3 105
ROACH 9700 17.8 15.7 113 20.3 17.2 118
SAND LAKE 10050 25.4 29.7 86 25.2 22.1 114
SOUTH PASS 9040 13.1 15.9 82 16.0 17.0 94
WINDY PEAK 7900 7.5 7.4 101 8.8 9.6 92
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Basin wide percent of average 92 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.8 11.5 137 15.7 14.4 109
DIVIDE PEAK 8880 21.1 18.3 115 21.6 19.3 112
OLD BATTLE 10000 30.8 30.0 103 33.7 32.3 104
SANDSTONE RS 8150 16.5 14.6 113 20.0 17.6 114
WHISKEY PARK 8950 29.0 28.2 103 31.0 26.6 117
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Basin wide percent of average 110 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.6 13.6 85 11.7 12.6 93
BLIND BULL SUM 8650 22.8 26.4 86 16.8 21.0 80
EAST RIM DIVIDE 7930 8.1 12.4 65 10.2 11.4 89
ELKHART PARK G.S. 9400 10.3 12.6 82 10.8 12.4 87
GROS VENTRE SUMMIT 8750 11.8 13.3 89 12.8 12.1 106
GUNSIGHT PASS 9820 10.9 -M * 12.9 -M *
KENDALL R.S. 7740 11.0 14.2 77 12.6 13.9 91
LOOMIS PARK 8240 14.5 16.6 87 16.0 16.5 97
NEW FORK LAKE 8340 8.9 10.7 83 8.8 10.7 82
SNIDER BASIN 8060 12.0 13.9 86 12.9 15.2 85
SPRING CREEK DIVIDE 9000 20.6 25.0 82 21.3 25.0 85
TRIPLE PEAK 8500 22.3 23.6 94 25.4 23.3 109
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Basin wide percent of average 84 91
LOWER GREEN RIVER
HAMS FORK 7840 11.1 12.4 90 9.2 11.5 80
HEWINTA 9519 14.1 10.8 131 16.2 13.4 121
HICKERSON PARK 9145 7.5 6.7 112 9.7 7.2 135
HOLE-IN-ROCK 9150 6.9 6.5 106 10.1 6.7 151
INDIAN CREEK 9425 21.9 25.9 85 -M 23.7 *
KELLEY R.S. 8180 13.2 16.0 82 15.9 19.1 83
STEEL CREEK PARK 10200 14.8 14.6 101 17.9 14.7 122
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Basin wide percent of average 96 109
UPPER BEAR RIVER
BUG LAKE 7950 16.7 19.7 85 15.8 18.1 87
HAYDEN FORK 9212 19.0 15.3 124 22.1 19.4 114
KELLEY R.S. 8180 13.2 16.0 82 15.9 19.1 83
LILY LAKE 9156 14.4 12.2 118 16.9 16.1 105
MONTE CRISTO 8960 26.7 28.3 94 24.8 23.8 104
SALT RIVER SUMMIT 7760 12.5 13.7 91 14.5 17.6 82
TRIAL LAKE 9992 20.5 23.6 87 22.7 23.3 97
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Basin wide percent of average 95 97
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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.