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 25 , 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 19.4 18.0 108 25.6 21.0 122
COTTONWOOD CREEK 7670 23.4 23.3 100 23.9 26.7 90
GRAND TARGHEE 9260 47.2 -M * 33.4 -M *
GRANITE CREEK 6770 17.6 18.6 95 22.5 19.6 115
GRASSY LAKE 7265 33.9 34.9 97 -M 35.3 *
GROS VENTRE SUMMIT 8750 12.4 13.9 89 13.5 12.6 107
GUNSIGHT PASS 9820 11.6 -M * 13.7 -M *
LEWIS LAKE DIVIDE 7850 32.9 34.8 95 36.2 36.0 101
PHILLIPS BENCH 8200 32.0 28.2 113 33.7 28.4 119
SALT RIVER SUMMIT 7760 13.0 14.1 92 15.2 18.2 84
SNAKE RIVER STATION 6920 19.0 19.0 100 26.2 21.9 120
SPRING CREEK DIVIDE 9000 21.9 25.9 85 22.9 25.8 89
THUMB DIVIDE 7980 16.8 18.7 90 19.1 18.4 104
TOGWOTEE PASS 9580 26.3 24.2 109 28.6 23.9 120
TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 *
WILLOW CREEK 8380 30.7 29.7 103 36.0 31.3 115
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Basin wide percent of average 99 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 24.7 22.9 108 23.4 19.6 119
BLACK BEAR 8170 43.7 38.3 114 -M 39.4 *
CANYON 7870 16.3 13.4 122 19.6 15.1 130
FISHER CREEK 9100 39.7 34.0 117 -M 35.5 *
MADISON PLATEAU 7750 28.2 24.4 116 30.6 26.0 118
NORTHEAST ENTRANCE 7350 9.8 11.1 88 13.0 12.3 106
PARKER PEAK 9400 24.9 21.0 119 -M 15.8 *
SYLVAN LAKE 8420 20.3 21.9 93 24.9 20.4 122
THUMB DIVIDE 7980 16.8 18.7 90 19.1 18.4 104
TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 *
WHISKEY CREEK 6800 17.7 16.7 106 24.0 20.4 118
WHITE MILL 8700 26.6 23.6 113 25.1 26.3 95
WOLVERINE 7650 10.3 11.5 90 13.3 12.5 106
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Basin wide percent of average 108 113
WIND RIVER
BURROUGHS CREEK 8750 15.4 14.3 108 18.4 15.8 116
COLD SPRINGS 9630 6.4 8.5 75 9.5 10.0 95
DEER PARK 9700 15.0 16.5 91 19.2 21.1 91
HOBBS PARK 10100 13.5 14.1 96 13.7 12.1 113
LITTLE WARM 9370 9.3 11.4 82 13.0 12.8 102
SOUTH PASS 9040 14.0 16.2 86 16.8 17.7 95
ST. LAWRENCE ALT 8620 6.8 6.9 99 8.3 8.4 99
TOGWOTEE PASS 9580 26.3 24.2 109 28.6 23.9 120
TOWNSEND CREEK 8700 8.7 8.2 106 11.9 10.9 109
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Basin wide percent of average 96 105
BIGHORN BASIN
BALD MTN. 9380 16.1 18.9 85 14.8 16.7 89
BEAR TRAP MEADOW 8200 8.7 5.3 164 8.8 7.8 113
BLACKWATER 9780 23.9 23.7 101 22.0 19.9 111
BONE SPRINGS DIV 9350 16.7 15.5 108 16.9 13.9 122
EVENING STAR 9200 28.8 28.9 100 30.2 24.6 123
GRAVE SPRINGS 8550 9.6 8.9 108 10.1 9.2 110
KIRWIN 9550 11.7 10.9 107 13.8 10.7 129
MARQUETTE 8760 5.9 8.4 70 9.2 9.1 101
MIDDLE POWDER 7760 11.3 11.2 101 9.1 11.7 78
OWL CREEK 8975 5.4 5.2 104 6.5 5.4 120
POWDER RIVER PASS 9480 11.9 10.4 114 14.1 11.8 119
SHELL CREEK 9580 15.5 14.1 110 15.0 12.7 118
SYLVAN LAKE 8420 20.3 21.9 93 24.9 20.4 122
SYLVAN ROAD 7120 11.5 12.5 92 20.1 17.3 116
TIMBER CREEK 7950 3.9 5.4 72 7.4 6.9 107
YOUNTS PEAK 8350 16.7 16.7 100 17.5 15.7 111
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Basin wide percent of average 100 112
SHOSHONE RIVER
BLACKWATER 9780 23.9 23.7 101 22.0 19.9 111
EVENING STAR 9200 28.8 28.9 100 30.2 24.6 123
KIRWIN 9550 11.7 10.9 107 13.8 10.7 129
MARQUETTE 8760 5.9 8.4 70 9.2 9.1 101
SYLVAN LAKE 8420 20.3 21.9 93 24.9 20.4 122
SYLVAN ROAD 7120 11.5 12.5 92 20.1 17.3 116
YOUNTS PEAK 8350 16.7 16.7 100 17.5 15.7 111
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Basin wide percent of average 97 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.7 5.3 164 8.8 7.8 113
BIG GOOSE 7990 8.5 9.8 87 11.4 8.0 142
BONE SPRINGS DIV 9350 16.7 15.5 108 16.9 13.9 122
BURGESS JUNCTION 7880 11.7 11.0 106 13.1 11.5 114
CLOUD PEAK RESERVOIR 9860 15.0 12.6 119 14.8 12.0 123
DOME LAKE 8880 11.1 11.7 95 14.5 12.4 117
GRAVE SPRINGS 8550 9.6 8.9 108 10.1 9.2 110
HANSEN SAWMILL 8360 6.8 6.3 108 9.1 7.7 118
MIDDLE POWDER 7760 11.3 11.2 101 9.1 11.7 78
POWDER RIVER PASS 9480 11.9 10.4 114 14.1 11.8 119
SUCKER CREEK 8880 13.8 11.1 124 15.9 12.8 124
TIE CREEK 6870 7.2 5.9 122 11.2 9.4 119
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Basin wide percent of average 111 116
BELLE FOURCHE
BLIND PARK 6890 7.1 8.7 82 9.9 10.7 93
COLE CANYON 5910 5.5 6.7 82 7.0 6.4 109
NORTH RAPID CREEK 6130 8.0 8.0 100 8.1 8.3 98
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Basin wide percent of average 88 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.1 24.7 106 26.8 24.4 110
DIVIDE PEAK 8880 21.4 19.1 112 21.8 20.0 109
ELK RIVER 8700 25.6 18.9 135 22.2 18.9 117
JOE WRIGHT 10120 21.8 20.4 107 25.2 23.8 106
NORTH FRENCH CREEK 10130 28.8 27.9 103 27.8 23.8 117
OLD BATTLE 10000 31.0 31.2 99 33.9 33.5 101
SAGE CREEK BASIN 7850 16.7 11.1 150 16.9 11.6 146
SOUTH BRUSH CREEK 8440 12.9 12.7 102 16.0 15.6 103
TOWER 10500 40.8 43.9 93 -M 37.1 *
WEBBER SPRINGS 9250 24.6 25.8 95 28.2 25.8 109
WILLOW CREEK PASS 9540 14.6 11.4 128 14.5 12.3 118
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Basin wide percent of average 107 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.1 22.7 89 20.7 21.1 98
CASPER MTN. 7900 12.8 13.6 94 13.6 13.5 101
DEADMAN HILL 10220 16.0 15.5 103 16.5 16.1 102
DEER PARK 9700 15.0 16.5 91 19.2 21.1 91
LAPRELE CREEK 8375 7.3 10.7 68 10.1 12.0 84
RENO HILL 8400 12.7 13.3 95 14.6 14.0 104
ROACH 9700 18.0 16.3 110 20.5 17.9 115
SAND LAKE 10050 26.1 31.2 84 25.9 23.1 112
SOUTH PASS 9040 14.0 16.2 86 16.8 17.7 95
WINDY PEAK 7900 7.6 7.8 97 9.0 10.1 89
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Basin wide percent of average 91 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.1 11.5 140 15.8 15.1 105
DIVIDE PEAK 8880 21.4 19.1 112 21.8 20.0 109
OLD BATTLE 10000 31.0 31.2 99 33.9 33.5 101
SANDSTONE RS 8150 16.6 14.9 111 20.1 18.2 110
WHISKEY PARK 8950 30.7 29.4 104 31.4 27.7 113
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Basin wide percent of average 109 107
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.8 14.1 91 12.8 13.0 98
BLIND BULL SUM 8650 24.2 27.4 88 17.5 21.7 81
EAST RIM DIVIDE 7930 8.7 12.8 68 10.8 11.8 92
ELKHART PARK G.S. 9400 10.7 13.1 82 11.4 12.9 88
GROS VENTRE SUMMIT 8750 12.4 13.9 89 13.5 12.6 107
GUNSIGHT PASS 9820 11.6 -M * 13.7 -M *
KENDALL R.S. 7740 11.7 14.6 80 13.4 14.3 94
LOOMIS PARK 8240 15.5 17.1 91 17.1 17.0 101
NEW FORK LAKE 8340 9.2 11.0 84 9.3 11.0 85
SNIDER BASIN 8060 13.1 14.3 92 14.0 15.7 89
SPRING CREEK DIVIDE 9000 21.9 25.9 85 22.9 25.8 89
TRIPLE PEAK 8500 24.1 24.5 98 27.2 24.1 113
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Basin wide percent of average 87 94
LOWER GREEN RIVER
HAMS FORK 7840 11.3 12.4 91 9.9 11.9 83
HEWINTA 9519 15.1 11.4 132 16.5 13.9 119
HICKERSON PARK 9145 7.5 7.1 106 10.0 7.5 133
HOLE-IN-ROCK 9150 6.9 6.8 101 10.2 7.0 146
INDIAN CREEK 9425 23.9 27.1 88 -M 24.6 *
KELLEY R.S. 8180 14.4 16.6 87 17.1 19.8 86
STEEL CREEK PARK 10200 15.3 15.2 101 18.2 15.4 118
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Basin wide percent of average 98 108
UPPER BEAR RIVER
BUG LAKE 7950 17.5 20.4 86 16.8 18.7 90
HAYDEN FORK 9212 19.6 16.0 123 22.5 20.2 111
KELLEY R.S. 8180 14.4 16.6 87 17.1 19.8 86
LILY LAKE 9156 14.7 12.7 116 17.2 16.8 102
MONTE CRISTO 8960 27.8 29.3 95 25.7 24.7 104
SALT RIVER SUMMIT 7760 13.0 14.1 92 15.2 18.2 84
TRIAL LAKE 9992 21.5 24.5 88 23.9 24.2 99
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Basin wide percent of average 96 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.