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 FRIDAY: APRIL 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 -M 18.1 * -M 21.9 *
COTTONWOOD CREEK 7670 26.0 24.3 107 26.1 28.2 93
GRAND TARGHEE 9260 50.0 -M * 34.8 -M *
GRANITE CREEK 6770 19.3 18.5 104 24.1 20.3 119
GRASSY LAKE 7265 37.6 36.6 103 43.7 36.9 118
GROS VENTRE SUMMIT 8750 13.3 14.5 92 14.7 13.3 111
GUNSIGHT PASS 9820 12.8 -M * 14.9 -M *
LEWIS LAKE DIVIDE 7850 36.4 36.2 101 38.3 37.7 102
PHILLIPS BENCH 8200 34.7 29.6 117 36.3 29.8 122
SALT RIVER SUMMIT 7760 14.3 14.8 97 16.5 19.3 85
SNAKE RIVER STATION 6920 21.1 19.1 110 28.5 22.8 125
SPRING CREEK DIVIDE 9000 23.4 27.3 86 24.8 27.1 92
THUMB DIVIDE 7980 19.6 19.3 102 21.4 19.4 110
TOGWOTEE PASS 9580 28.2 25.5 111 30.5 25.3 121
TWO OCEAN PLATEAU 9240 -M 28.9 * -M 28.4 *
WILLOW CREEK 8380 34.4 31.0 111 39.6 33.0 120
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Basin wide percent of average 104 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 26.1 24.0 109 24.8 20.6 120
BLACK BEAR 8170 47.3 40.1 118 41.8 41.4 101
CANYON 7870 18.3 14.0 131 21.5 15.8 136
FISHER CREEK 9100 42.8 35.8 120 38.6 37.3 103
MADISON PLATEAU 7750 30.9 25.7 120 33.0 27.5 120
NORTHEAST ENTRANCE 7350 -M 11.3 * -M 13.0 *
PARKER PEAK 9400 27.5 22.2 124 25.0 16.7 150
SYLVAN LAKE 8420 22.4 23.2 97 27.1 21.5 126
THUMB DIVIDE 7980 19.6 19.3 102 21.4 19.4 110
TWO OCEAN PLATEAU 9240 -M 28.9 * -M 28.4 *
WHISKEY CREEK 6800 19.3 17.6 110 25.4 21.5 118
WHITE MILL 8700 29.0 24.9 116 27.9 27.7 101
WOLVERINE 7650 11.7 11.7 100 14.7 13.1 112
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Basin wide percent of average 114 115
WIND RIVER
BURROUGHS CREEK 8750 16.6 14.9 111 19.5 16.7 117
COLD SPRINGS 9630 7.2 8.9 81 10.3 11.0 94
DEER PARK 9700 15.8 17.3 91 20.5 22.5 91
HOBBS PARK 10100 14.5 15.6 93 14.6 13.2 111
LITTLE WARM 9370 10.6 12.2 87 14.3 13.8 104
SOUTH PASS 9040 14.9 17.1 87 17.7 18.9 94
ST. LAWRENCE ALT 8620 7.2 7.5 96 8.6 9.1 95
TOGWOTEE PASS 9580 28.2 25.5 111 30.5 25.3 121
TOWNSEND CREEK 8700 8.9 9.3 96 12.4 12.0 103
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Basin wide percent of average 97 104
BIGHORN BASIN
BALD MTN. 9380 17.1 20.3 84 15.7 17.8 88
BEAR TRAP MEADOW 8200 9.6 5.2 185 9.7 8.5 114
BLACKWATER 9780 26.7 25.2 106 24.3 21.1 115
BONE SPRINGS DIV 9350 17.9 16.7 107 17.8 15.0 119
EVENING STAR 9200 31.2 30.4 103 34.3 26.0 132
GRAVE SPRINGS 8550 10.4 9.8 106 10.8 10.0 108
KIRWIN 9550 12.6 11.7 108 15.1 11.5 131
MARQUETTE 8760 7.4 9.5 78 10.3 10.1 102
MIDDLE POWDER 7760 12.1 12.3 98 9.7 12.7 76
OWL CREEK 8975 6.0 5.8 103 7.1 6.1 116
POWDER RIVER PASS 9480 12.8 11.1 115 14.9 12.7 117
SHELL CREEK 9580 16.1 15.1 107 15.5 13.7 113
SYLVAN LAKE 8420 22.4 23.2 97 27.1 21.5 126
SYLVAN ROAD 7120 13.6 12.8 106 22.1 18.0 123
TIMBER CREEK 7950 4.5 5.9 76 8.2 7.6 108
YOUNTS PEAK 8350 17.8 17.5 102 18.3 16.6 110
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Basin wide percent of average 102 114
SHOSHONE RIVER
BLACKWATER 9780 26.7 25.2 106 24.3 21.1 115
EVENING STAR 9200 31.2 30.4 103 34.3 26.0 132
KIRWIN 9550 12.6 11.7 108 15.1 11.5 131
MARQUETTE 8760 7.4 9.5 78 10.3 10.1 102
SYLVAN LAKE 8420 22.4 23.2 97 27.1 21.5 126
SYLVAN ROAD 7120 13.6 12.8 106 22.1 18.0 123
YOUNTS PEAK 8350 17.8 17.5 102 18.3 16.6 110
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Basin wide percent of average 101 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.6 5.2 185 9.7 8.5 114
BIG GOOSE 7990 9.5 11.1 86 12.5 8.9 140
BONE SPRINGS DIV 9350 17.9 16.7 107 17.8 15.0 119
BURGESS JUNCTION 7880 12.5 12.0 104 14.0 12.5 112
CLOUD PEAK RESERVOIR 9860 16.0 13.9 115 15.6 13.2 118
DOME LAKE 8880 12.0 12.9 93 15.3 13.5 113
GRAVE SPRINGS 8550 10.4 9.8 106 10.8 10.0 108
HANSEN SAWMILL 8360 7.5 6.5 115 9.7 8.4 115
MIDDLE POWDER 7760 12.1 12.3 98 9.7 12.7 76
POWDER RIVER PASS 9480 12.8 11.1 115 14.9 12.7 117
SUCKER CREEK 8880 14.8 12.2 121 16.8 13.9 121
TIE CREEK 6870 8.0 6.2 129 12.1 10.2 119
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Basin wide percent of average 110 114
BELLE FOURCHE
BLIND PARK 6890 8.1 8.4 96 11.0 11.3 97
COLE CANYON 5910 6.3 7.0 90 8.1 6.8 119
NORTH RAPID CREEK 6130 8.6 8.5 101 8.9 8.8 101
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Basin wide percent of average 96 104
UPPER N. PLATTE RIVER
COLUMBINE 9160 27.5 25.1 110 28.4 25.8 110
DIVIDE PEAK 8880 23.7 20.3 117 23.9 21.2 113
ELK RIVER 8700 27.4 19.9 138 23.6 20.0 118
JOE WRIGHT 10120 24.0 21.9 110 27.6 25.3 109
NORTH FRENCH CREEK 10130 31.7 30.2 105 30.1 25.2 119
OLD BATTLE 10000 34.5 32.9 105 40.0 35.3 113
SAGE CREEK BASIN 7850 17.8 11.8 151 18.1 12.3 147
SOUTH BRUSH CREEK 8440 14.9 13.3 112 17.4 16.8 104
TOWER 10500 44.1 46.7 94 -M 39.2 *
WEBBER SPRINGS 9250 27.2 26.4 103 30.8 27.3 113
WILLOW CREEK PASS 9540 16.2 12.5 130 16.0 13.1 122
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Basin wide percent of average 111 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.9 24.5 89 22.6 22.6 100
CASPER MTN. 7900 13.4 15.1 89 14.3 14.8 97
DEADMAN HILL 10220 17.8 16.9 105 18.5 17.3 107
DEER PARK 9700 15.8 17.3 91 20.5 22.5 91
LAPRELE CREEK 8375 8.5 11.0 77 11.4 12.9 88
RENO HILL 8400 14.0 14.7 95 16.0 15.4 104
ROACH 9700 19.7 17.5 113 22.4 19.0 118
SAND LAKE 10050 29.3 33.3 88 28.5 24.7 115
SOUTH PASS 9040 14.9 17.1 87 17.7 18.9 94
WINDY PEAK 7900 8.8 8.3 106 10.2 10.8 94
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Basin wide percent of average 93 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 17.1 10.6 161 17.2 16.2 106
DIVIDE PEAK 8880 23.7 20.3 117 23.9 21.2 113
OLD BATTLE 10000 34.5 32.9 105 40.0 35.3 113
SANDSTONE RS 8150 18.6 14.6 127 22.1 19.1 116
WHISKEY PARK 8950 34.4 30.6 112 34.2 29.3 117
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Basin wide percent of average 118 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.6 14.9 91 13.6 13.7 99
BLIND BULL SUM 8650 26.5 28.6 93 18.8 22.8 82
EAST RIM DIVIDE 7930 9.8 13.5 73 11.8 12.3 96
ELKHART PARK G.S. 9400 11.4 13.7 83 12.2 13.7 89
GROS VENTRE SUMMIT 8750 13.3 14.5 92 14.7 13.3 111
GUNSIGHT PASS 9820 12.8 -M * 14.9 -M *
KENDALL R.S. 7740 13.1 14.5 90 14.6 14.9 98
LOOMIS PARK 8240 17.2 17.5 98 18.6 17.8 104
NEW FORK LAKE 8340 10.1 11.4 89 9.8 11.6 84
SNIDER BASIN 8060 14.2 14.9 95 15.1 16.5 92
SPRING CREEK DIVIDE 9000 23.4 27.3 86 24.8 27.1 92
TRIPLE PEAK 8500 26.7 25.5 105 29.7 25.4 117
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Basin wide percent of average 91 97
LOWER GREEN RIVER
HAMS FORK 7840 13.1 11.7 112 10.8 12.5 86
HEWINTA 9519 16.6 12.4 134 17.4 15.0 116
HICKERSON PARK 9145 8.2 7.9 104 10.2 8.2 124
HOLE-IN-ROCK 9150 7.2 7.3 99 10.8 7.7 140
INDIAN CREEK 9425 27.0 28.7 94 -M 26.1 *
KELLEY R.S. 8180 15.7 17.3 91 18.6 20.9 89
STEEL CREEK PARK 10200 16.4 16.2 101 19.3 16.7 116
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Basin wide percent of average 103 108
UPPER BEAR RIVER
BUG LAKE 7950 18.5 21.5 86 17.4 19.7 88
HAYDEN FORK 9212 21.0 16.8 125 23.7 21.6 110
KELLEY R.S. 8180 15.7 17.3 91 18.6 20.9 89
LILY LAKE 9156 15.8 14.0 113 18.2 18.0 101
MONTE CRISTO 8960 29.9 30.3 99 26.9 26.2 103
SALT RIVER SUMMIT 7760 14.3 14.8 97 16.5 19.3 85
TRIAL LAKE 9992 22.8 25.6 89 24.9 25.6 97
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Basin wide percent of average 98 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.