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 12 , 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 -M 17.1 * 22.7 19.8 115
COTTONWOOD CREEK 7670 21.0 20.8 101 21.9 24.7 89
GRAND TARGHEE 9260 41.8 -M * 28.0 -M *
GRANITE CREEK 6770 15.3 17.5 87 20.4 18.5 110
GRASSY LAKE 7265 27.9 32.1 87 35.2 33.0 107
GROS VENTRE SUMMIT 8750 11.6 12.6 92 12.6 11.6 109
GUNSIGHT PASS 9820 10.7 -M * 12.5 -M *
LEWIS LAKE DIVIDE 7850 27.4 32.1 85 31.8 33.7 94
PHILLIPS BENCH 8200 27.4 26.0 105 29.9 26.4 113
SALT RIVER SUMMIT 7760 11.8 13.1 90 13.8 16.9 82
SNAKE RIVER STATION 6920 15.5 17.9 87 23.2 20.6 113
SPRING CREEK DIVIDE 9000 19.3 23.9 81 20.0 24.0 83
THUMB DIVIDE 7980 14.7 17.0 86 17.1 17.2 99
TOGWOTEE PASS 9580 23.6 22.3 106 25.7 22.1 116
TWO OCEAN PLATEAU 9240 31.2 25.1 124 23.4 25.1 93
WILLOW CREEK 8380 27.5 27.4 100 33.0 29.0 114
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Basin wide percent of average 95 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 22.4 21.5 104 21.0 18.3 115
BLACK BEAR 8170 40.4 35.9 113 35.9 36.1 99
CANYON 7870 14.9 12.4 120 18.4 13.9 132
FISHER CREEK 9100 36.9 31.9 116 33.3 32.9 101
MADISON PLATEAU 7750 26.3 22.8 115 28.9 23.8 121
NORTHEAST ENTRANCE 7350 -M 10.5 * -M 11.5 *
PARKER PEAK 9400 22.5 19.6 115 20.6 14.7 140
SYLVAN LAKE 8420 18.4 20.3 91 22.9 19.1 120
THUMB DIVIDE 7980 14.7 17.0 86 17.1 17.2 99
TWO OCEAN PLATEAU 9240 31.2 25.1 124 23.4 25.1 93
WHISKEY CREEK 6800 16.5 15.7 105 22.8 18.8 121
WHITE MILL 8700 23.8 22.0 108 23.8 24.4 98
WOLVERINE 7650 9.0 11.3 80 11.6 11.8 98
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Basin wide percent of average 108 109
WIND RIVER
BURROUGHS CREEK 8750 13.5 13.5 100 16.3 14.7 111
COLD SPRINGS 9630 5.7 7.9 72 8.7 9.0 97
DEER PARK 9700 13.2 15.4 86 17.6 19.4 91
HOBBS PARK 10100 11.8 13.0 91 12.2 10.7 114
LITTLE WARM 9370 8.3 10.4 80 11.7 11.7 100
SOUTH PASS 9040 12.5 15.3 82 15.3 16.1 95
ST. LAWRENCE ALT 8620 6.3 6.5 97 7.6 7.5 101
TOGWOTEE PASS 9580 23.6 22.3 106 25.7 22.1 116
TOWNSEND CREEK 8700 7.7 7.6 101 10.9 9.6 114
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Basin wide percent of average 92 104
BIGHORN BASIN
BALD MTN. 9380 14.7 17.3 85 13.7 15.2 90
BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 6.9 112
BLACKWATER 9780 21.2 22.1 96 19.9 18.4 108
BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.6 122
EVENING STAR 9200 25.6 26.9 95 29.0 23.1 126
GRAVE SPRINGS 8550 8.4 8.0 105 9.1 8.5 107
KIRWIN 9550 10.4 10.0 104 12.6 9.9 127
MARQUETTE 8760 4.7 7.4 64 8.3 8.1 102
MIDDLE POWDER 7760 9.9 9.9 100 8.1 10.4 78
OWL CREEK 8975 4.8 4.6 104 5.8 4.8 121
POWDER RIVER PASS 9480 10.8 9.5 114 12.8 10.8 119
SHELL CREEK 9580 13.8 12.7 109 13.4 11.6 116
SYLVAN LAKE 8420 18.4 20.3 91 22.9 19.1 120
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.3 115
TIMBER CREEK 7950 3.5 4.7 74 6.9 6.0 115
YOUNTS PEAK 8350 14.7 15.6 94 15.7 14.5 108
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Basin wide percent of average 97 112
SHOSHONE RIVER
BLACKWATER 9780 21.2 22.1 96 19.9 18.4 108
EVENING STAR 9200 25.6 26.9 95 29.0 23.1 126
KIRWIN 9550 10.4 10.0 104 12.6 9.9 127
MARQUETTE 8760 4.7 7.4 64 8.3 8.1 102
SYLVAN LAKE 8420 18.4 20.3 91 22.9 19.1 120
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.3 115
YOUNTS PEAK 8350 14.7 15.6 94 15.7 14.5 108
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Basin wide percent of average 92 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 6.9 112
BIG GOOSE 7990 7.2 8.5 85 10.2 7.2 142
BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.6 122
BURGESS JUNCTION 7880 10.7 9.8 109 12.2 10.3 118
CLOUD PEAK RESERVOIR 9860 13.5 11.2 121 13.4 10.7 125
DOME LAKE 8880 9.2 10.4 88 12.6 11.1 114
GRAVE SPRINGS 8550 8.4 8.0 105 9.1 8.5 107
HANSEN SAWMILL 8360 5.4 5.6 96 7.7 6.9 112
MIDDLE POWDER 7760 9.9 9.9 100 8.1 10.4 78
POWDER RIVER PASS 9480 10.8 9.5 114 12.8 10.8 119
SUCKER CREEK 8880 12.2 10.0 122 14.3 11.4 125
TIE CREEK 6870 6.6 5.7 116 10.5 8.4 125
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Basin wide percent of average 108 116
BELLE FOURCHE
BLIND PARK 6890 6.8 8.1 84 9.6 9.9 97
COLE CANYON 5910 5.5 6.1 90 6.7 5.9 114
NORTH RAPID CREEK 6130 7.8 7.3 107 7.8 7.9 99
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Basin wide percent of average 93 102
UPPER N. PLATTE RIVER
COLUMBINE 9160 24.2 23.4 103 25.5 22.5 113
DIVIDE PEAK 8880 20.9 17.2 122 21.2 18.4 115
ELK RIVER 8700 23.0 17.4 132 21.5 17.4 124
JOE WRIGHT 10120 20.8 18.6 112 24.2 21.8 111
NORTH FRENCH CREEK 10130 27.3 24.9 110 26.6 21.8 122
OLD BATTLE 10000 29.2 28.6 102 33.6 30.8 109
SAGE CREEK BASIN 7850 16.4 10.0 164 16.6 10.7 155
SOUTH BRUSH CREEK 8440 12.5 11.3 111 15.8 14.3 110
TOWER 10500 38.4 40.4 95 -M 34.4 *
WEBBER SPRINGS 9250 23.0 23.7 97 26.8 23.7 113
WILLOW CREEK PASS 9540 13.9 10.4 134 14.1 11.2 126
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Basin wide percent of average 110 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.3 20.6 89 19.1 19.0 101
CASPER MTN. 7900 11.7 12.2 96 12.6 12.1 104
DEADMAN HILL 10220 15.2 14.0 109 15.7 14.5 108
DEER PARK 9700 13.2 15.4 86 17.6 19.4 91
LAPRELE CREEK 8375 6.7 9.8 68 9.4 10.9 86
RENO HILL 8400 11.9 11.6 103 13.7 12.5 110
ROACH 9700 17.1 15.0 114 19.6 16.3 120
SAND LAKE 10050 24.5 27.9 88 24.4 20.9 117
SOUTH PASS 9040 12.5 15.3 82 15.3 16.1 95
WINDY PEAK 7900 7.0 6.9 101 8.5 9.1 93
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Basin wide percent of average 93 103
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.3 10.9 140 15.3 13.6 112
DIVIDE PEAK 8880 20.9 17.2 122 21.2 18.4 115
OLD BATTLE 10000 29.2 28.6 102 33.6 30.8 109
SANDSTONE RS 8150 15.8 13.9 114 19.6 16.9 116
WHISKEY PARK 8950 29.6 26.5 112 30.9 25.3 122
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Basin wide percent of average 114 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.4 13.1 87 11.5 12.1 95
BLIND BULL SUM 8650 21.4 25.2 85 15.9 20.2 79
EAST RIM DIVIDE 7930 7.6 11.9 64 9.7 11.0 88
ELKHART PARK G.S. 9400 9.7 12.1 80 10.5 11.8 89
GROS VENTRE SUMMIT 8750 11.6 12.6 92 12.6 11.6 109
GUNSIGHT PASS 9820 10.7 -M * 12.5 -M *
KENDALL R.S. 7740 10.1 13.6 74 11.9 13.4 89
LOOMIS PARK 8240 13.6 15.9 86 15.3 15.9 96
NEW FORK LAKE 8340 8.3 10.3 81 8.5 10.3 83
SNIDER BASIN 8060 11.4 13.4 85 12.5 14.6 86
SPRING CREEK DIVIDE 9000 19.3 23.9 81 20.0 24.0 83
TRIPLE PEAK 8500 21.1 22.6 93 24.2 22.3 109
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Basin wide percent of average 83 91
LOWER GREEN RIVER
HAMS FORK 7840 10.7 12.0 89 8.7 11.1 78
HEWINTA 9519 12.5 10.1 124 14.9 12.6 118
HICKERSON PARK 9145 6.8 6.3 108 9.0 6.8 132
HOLE-IN-ROCK 9150 5.7 6.2 92 8.9 6.3 141
INDIAN CREEK 9425 20.4 24.5 83 -M 22.7 *
KELLEY R.S. 8180 12.6 15.3 82 15.2 18.3 83
STEEL CREEK PARK 10200 13.4 13.8 97 16.6 14.0 119
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Basin wide percent of average 93 106
UPPER BEAR RIVER
BUG LAKE 7950 16.0 18.7 86 15.4 17.3 89
HAYDEN FORK 9212 18.0 14.5 124 21.2 18.5 115
KELLEY R.S. 8180 12.6 15.3 82 15.2 18.3 83
LILY LAKE 9156 13.4 11.7 115 16.0 15.3 105
MONTE CRISTO 8960 25.4 27.0 94 24.0 22.8 105
SALT RIVER SUMMIT 7760 11.8 13.1 90 13.8 16.9 82
TRIAL LAKE 9992 19.3 22.5 86 22.1 22.3 99
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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.