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 SATURDAY: APRIL 26 , 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 14.0 * -M 23.9 *
COTTONWOOD CREEK 7670 26.7 21.4 125 28.1 31.2 90
GRAND TARGHEE 9260 53.8 -M * 37.4 -M *
GRANITE CREEK 6770 18.1 14.4 126 24.7 22.0 112
GRASSY LAKE 7265 40.3 35.0 115 47.4 40.2 118
GROS VENTRE SUMMIT 8750 13.5 14.0 96 15.5 14.9 104
GUNSIGHT PASS 9820 13.1 -M * 16.4 -M *
LEWIS LAKE DIVIDE 7850 39.5 35.7 111 40.7 41.0 99
PHILLIPS BENCH 8200 36.5 30.3 120 38.1 32.5 117
SALT RIVER SUMMIT 7760 -M 12.2 * -M 21.2 *
SNAKE RIVER STATION 6920 20.5 14.2 144 30.2 25.1 120
SPRING CREEK DIVIDE 9000 23.6 28.9 82 26.2 29.7 88
THUMB DIVIDE 7980 20.0 16.4 122 22.8 21.5 106
TOGWOTEE PASS 9580 30.0 27.6 109 33.0 28.3 117
TWO OCEAN PLATEAU 9240 -M 31.6 * -M 31.4 *
WILLOW CREEK 8380 35.2 31.5 112 41.4 36.8 112
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Basin wide percent of average 113 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 27.6 25.8 107 26.4 22.9 115
BLACK BEAR 8170 47.4 40.7 116 46.7 45.1 104
CANYON 7870 19.2 12.2 157 22.9 17.3 132
FISHER CREEK 9100 44.9 37.8 119 42.2 41.0 103
MADISON PLATEAU 7750 33.7 25.2 134 35.3 29.9 118
NORTHEAST ENTRANCE 7350 10.4 8.2 127 15.1 14.4 105
PARKER PEAK 9400 30.5 24.3 126 -M 19.0 *
SYLVAN LAKE 8420 23.7 24.1 98 29.6 24.1 123
THUMB DIVIDE 7980 20.0 16.4 122 22.8 21.5 106
TWO OCEAN PLATEAU 9240 -M 31.6 * -M 31.4 *
WHISKEY CREEK 6800 20.4 16.3 125 27.4 23.7 116
WHITE MILL 8700 30.6 26.3 116 30.1 30.5 99
WOLVERINE 7650 10.2 8.3 123 15.3 14.8 103
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Basin wide percent of average 120 110
WIND RIVER
BURROUGHS CREEK 8750 17.2 14.3 120 20.4 18.8 109
COLD SPRINGS 9630 5.8 5.1 114 11.4 13.3 86
DEER PARK 9700 16.6 19.8 84 22.0 26.1 84
HOBBS PARK 10100 15.8 17.9 88 16.9 16.2 104
LITTLE WARM 9370 10.8 11.8 92 15.6 16.2 96
SOUTH PASS 9040 15.2 18.2 84 19.4 21.9 89
ST. LAWRENCE ALT 8620 6.3 6.5 97 9.4 11.5 82
TOGWOTEE PASS 9580 30.0 27.6 109 33.0 28.3 117
TOWNSEND CREEK 8700 9.1 9.7 94 13.8 14.8 93
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Basin wide percent of average 97 97
BIGHORN BASIN
BALD MTN. 9380 18.5 23.0 80 17.2 20.6 83
BEAR TRAP MEADOW 8200 7.7 3.0 257 10.5 10.4 101
BLACKWATER 9780 29.3 28.1 104 26.7 24.0 111
BONE SPRINGS DIV 9350 19.9 18.0 111 19.8 17.6 112
EVENING STAR 9200 33.0 32.8 101 37.4 29.2 128
GRAVE SPRINGS 8550 11.1 11.1 100 12.0 12.6 95
KIRWIN 9550 14.2 12.8 111 -M 13.7 *
MARQUETTE 8760 9.1 10.9 83 11.5 13.0 88
MIDDLE POWDER 7760 13.9 14.4 97 11.1 15.2 73
OWL CREEK 8975 3.6 4.1 88 8.2 7.8 105
POWDER RIVER PASS 9480 13.2 11.1 119 16.4 15.2 108
SHELL CREEK 9580 18.2 16.6 110 17.7 16.2 109
SYLVAN LAKE 8420 23.7 24.1 98 29.6 24.1 123
SYLVAN ROAD 7120 13.1 9.5 138 23.3 20.0 116
TIMBER CREEK 7950 5.2 5.1 102 9.6 9.8 98
YOUNTS PEAK 8350 18.6 18.1 103 19.6 18.4 107
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Basin wide percent of average 104 106
SHOSHONE RIVER
BLACKWATER 9780 29.3 28.1 104 26.7 24.0 111
EVENING STAR 9200 33.0 32.8 101 37.4 29.2 128
KIRWIN 9550 14.2 12.8 111 -M 13.7 *
MARQUETTE 8760 9.1 10.9 83 11.5 13.0 88
SYLVAN LAKE 8420 23.7 24.1 98 29.6 24.1 123
SYLVAN ROAD 7120 13.1 9.5 138 23.3 20.0 116
YOUNTS PEAK 8350 18.6 18.1 103 19.6 18.4 107
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Basin wide percent of average 103 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.7 3.0 257 10.5 10.4 101
BIG GOOSE 7990 10.5 12.2 86 14.3 12.2 117
BONE SPRINGS DIV 9350 19.9 18.0 111 19.8 17.6 112
BURGESS JUNCTION 7880 14.9 13.3 112 16.3 14.8 110
CLOUD PEAK RESERVOIR 9860 17.6 16.1 109 17.9 16.3 110
DOME LAKE 8880 13.1 13.6 96 17.4 16.1 108
GRAVE SPRINGS 8550 11.1 11.1 100 12.0 12.6 95
HANSEN SAWMILL 8360 5.9 5.2 113 10.8 10.4 104
MIDDLE POWDER 7760 13.9 14.4 97 11.1 15.2 73
POWDER RIVER PASS 9480 13.2 11.1 119 16.4 15.2 108
SUCKER CREEK 8880 16.5 13.4 123 19.4 16.7 116
TIE CREEK 6870 7.8 5.0 156 13.8 12.8 108
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Basin wide percent of average 112 106
BELLE FOURCHE
BLIND PARK 6890 5.7 5.3 108 12.8 13.6 94
COLE CANYON 5910 5.8 5.9 98 9.6 8.8 109
NORTH RAPID CREEK 6130 8.3 6.0 138 11.2 10.7 105
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Basin wide percent of average 115 102
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.9 22.6 119 31.9 28.6 112
DIVIDE PEAK 8880 24.0 20.4 118 26.6 23.7 112
ELK RIVER 8700 23.0 17.0 135 25.8 22.5 115
JOE WRIGHT 10120 27.1 24.8 109 31.7 29.2 109
NORTH FRENCH CREEK 10130 33.7 34.2 99 34.0 28.8 118
OLD BATTLE 10000 38.1 36.2 105 44.6 39.0 114
SAGE CREEK BASIN 7850 16.9 11.8 143 19.2 13.7 140
SOUTH BRUSH CREEK 8440 12.6 12.1 104 19.4 19.5 99
TOWER 10500 48.6 51.7 94 46.5 44.1 105
WEBBER SPRINGS 9250 29.1 25.9 112 35.0 30.4 115
WILLOW CREEK PASS 9540 20.4 14.3 143 18.7 15.2 123
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Basin wide percent of average 111 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.5 28.2 83 25.7 26.2 98
CASPER MTN. 7900 14.2 17.6 81 16.7 18.6 90
DEADMAN HILL 10220 20.2 19.4 104 22.0 20.2 109
DEER PARK 9700 16.6 19.8 84 22.0 26.1 84
LAPRELE CREEK 8375 7.2 8.3 87 13.4 15.7 85
RENO HILL 8400 14.5 15.6 93 18.8 19.3 97
ROACH 9700 20.6 18.7 110 25.2 21.8 116
SAND LAKE 10050 32.5 36.5 89 33.6 28.4 118
SOUTH PASS 9040 15.2 18.2 84 19.4 21.9 89
WINDY PEAK 7900 8.0 6.1 131 11.8 12.9 91
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Basin wide percent of average 92 99
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.3 5.9 192 18.7 18.1 103
DIVIDE PEAK 8880 24.0 20.4 118 26.6 23.7 112
OLD BATTLE 10000 38.1 36.2 105 44.6 39.0 114
SANDSTONE RS 8150 16.7 11.1 150 23.9 21.3 112
WHISKEY PARK 8950 39.1 30.7 127 40.0 32.9 122
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Basin wide percent of average 124 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.6 14.4 94 14.8 15.5 95
BLIND BULL SUM 8650 28.4 28.4 100 19.5 24.8 79
EAST RIM DIVIDE 7930 9.6 13.8 70 12.3 13.6 90
ELKHART PARK G.S. 9400 11.5 13.5 85 12.6 15.5 81
GROS VENTRE SUMMIT 8750 13.5 14.0 96 15.5 14.9 104
GUNSIGHT PASS 9820 13.1 -M * 16.4 -M *
KENDALL R.S. 7740 11.4 11.5 99 15.1 16.2 93
LOOMIS PARK 8240 15.9 15.5 103 19.5 19.5 100
NEW FORK LAKE 8340 9.4 9.7 97 10.3 13.0 79
SNIDER BASIN 8060 13.7 13.7 100 15.6 18.2 86
SPRING CREEK DIVIDE 9000 23.6 28.9 82 26.2 29.7 88
TRIPLE PEAK 8500 26.2 25.0 105 31.7 28.0 113
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Basin wide percent of average 94 92
LOWER GREEN RIVER
HAMS FORK 7840 11.5 7.4 155 11.7 14.3 82
HEWINTA 9519 15.6 10.6 147 19.1 17.3 110
HICKERSON PARK 9145 6.1 6.8 90 11.1 9.8 113
HOLE-IN-ROCK 9150 6.2 5.8 107 11.8 9.3 127
INDIAN CREEK 9425 27.8 29.1 96 -M 28.9 *
KELLEY R.S. 8180 16.0 15.4 104 19.7 23.1 85
STEEL CREEK PARK 10200 18.8 18.3 103 21.2 19.7 108
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Basin wide percent of average 109 101
UPPER BEAR RIVER
BUG LAKE 7950 18.8 19.7 95 18.7 21.9 85
HAYDEN FORK 9212 18.4 14.5 127 25.9 24.5 106
KELLEY R.S. 8180 16.0 15.4 104 19.7 23.1 85
LILY LAKE 9156 16.0 12.5 128 20.1 20.6 98
MONTE CRISTO 8960 32.0 29.4 109 29.1 29.5 99
SALT RIVER SUMMIT 7760 -M 12.2 * -M 21.2 *
TRIAL LAKE 9992 25.1 26.6 94 27.0 28.7 94
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Basin wide percent of average 107 95
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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.