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: APRIL 2 , 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 21.8 *
COTTONWOOD CREEK 7670 26.0 24.2 107 26.0 27.9 93
GRAND TARGHEE 9260 49.9 -M * 34.8 -M *
GRANITE CREEK 6770 19.3 18.6 104 24.1 20.2 119
GRASSY LAKE 7265 37.5 36.3 103 43.7 36.6 119
GROS VENTRE SUMMIT 8750 13.2 14.4 92 14.5 13.1 111
GUNSIGHT PASS 9820 12.7 -M * 14.8 -M *
LEWIS LAKE DIVIDE 7850 36.4 36.0 101 38.0 37.3 102
PHILLIPS BENCH 8200 34.5 29.4 117 35.2 29.5 119
SALT RIVER SUMMIT 7760 14.1 14.7 96 16.4 19.1 86
SNAKE RIVER STATION 6920 20.9 19.2 109 28.4 22.6 126
SPRING CREEK DIVIDE 9000 23.3 27.1 86 24.5 26.9 91
THUMB DIVIDE 7980 19.5 19.3 101 21.3 19.2 111
TOGWOTEE PASS 9580 28.1 25.3 111 30.2 25.0 121
TWO OCEAN PLATEAU 9240 38.1 28.6 133 -M 28.1 *
WILLOW CREEK 8380 34.2 30.8 111 -M 32.7 *
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Basin wide percent of average 107 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 26.0 23.7 110 24.7 20.4 121
BLACK BEAR 8170 47.3 39.8 119 41.8 41.1 102
CANYON 7870 18.3 13.9 132 21.5 15.7 137
FISHER CREEK 9100 42.7 35.5 120 38.6 37.0 104
MADISON PLATEAU 7750 30.8 25.5 121 32.8 27.2 121
NORTHEAST ENTRANCE 7350 11.0 11.3 97 14.2 12.9 110
PARKER PEAK 9400 27.5 22.0 125 -M 16.5 *
SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126
THUMB DIVIDE 7980 19.5 19.3 101 21.3 19.2 111
TWO OCEAN PLATEAU 9240 38.1 28.6 133 -M 28.1 *
WHISKEY CREEK 6800 19.3 17.5 110 25.3 21.3 119
WHITE MILL 8700 28.9 24.7 117 -M 27.4 *
WOLVERINE 7650 11.7 11.7 100 14.6 13.0 112
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Basin wide percent of average 116 114
WIND RIVER
BURROUGHS CREEK 8750 16.6 14.8 112 19.4 16.5 118
COLD SPRINGS 9630 7.0 9.0 78 10.2 10.8 94
DEER PARK 9700 15.8 17.3 91 20.4 22.2 92
HOBBS PARK 10100 14.4 15.3 94 14.5 13.0 112
LITTLE WARM 9370 10.4 12.1 86 14.1 13.6 104
SOUTH PASS 9040 14.7 16.9 87 17.7 18.7 95
ST. LAWRENCE ALT 8620 6.9 7.4 93 8.5 9.0 94
TOGWOTEE PASS 9580 28.1 25.3 111 30.2 25.0 121
TOWNSEND CREEK 8700 8.9 9.0 99 12.4 11.8 105
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Basin wide percent of average 97 105
BIGHORN BASIN
BALD MTN. 9380 17.1 20.0 86 15.6 17.6 89
BEAR TRAP MEADOW 8200 9.5 5.2 183 9.7 8.4 115
BLACKWATER 9780 26.6 24.9 107 24.1 20.8 116
BONE SPRINGS DIV 9350 17.9 16.5 108 17.8 14.8 120
EVENING STAR 9200 31.3 30.2 104 34.3 25.6 134
GRAVE SPRINGS 8550 10.3 9.5 108 10.8 9.8 110
KIRWIN 9550 12.6 11.5 110 14.8 11.4 130
MARQUETTE 8760 7.3 9.1 80 10.1 9.9 102
MIDDLE POWDER 7760 12.0 11.9 101 9.7 12.5 78
OWL CREEK 8975 5.9 5.6 105 7.1 6.0 118
POWDER RIVER PASS 9480 12.8 11.0 116 14.8 12.5 118
SHELL CREEK 9580 16.1 14.9 108 15.5 13.5 115
SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126
SYLVAN ROAD 7120 13.5 12.9 105 22.0 17.9 123
TIMBER CREEK 7950 4.4 5.8 76 8.2 7.5 109
YOUNTS PEAK 8350 17.8 17.4 102 18.3 16.4 112
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Basin wide percent of average 104 115
SHOSHONE RIVER
BLACKWATER 9780 26.6 24.9 107 24.1 20.8 116
EVENING STAR 9200 31.3 30.2 104 34.3 25.6 134
KIRWIN 9550 12.6 11.5 110 14.8 11.4 130
MARQUETTE 8760 7.3 9.1 80 10.1 9.9 102
SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126
SYLVAN ROAD 7120 13.5 12.9 105 22.0 17.9 123
YOUNTS PEAK 8350 17.8 17.4 102 18.3 16.4 112
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Basin wide percent of average 102 122
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.5 5.2 183 9.7 8.4 115
BIG GOOSE 7990 9.4 10.8 87 12.3 8.6 143
BONE SPRINGS DIV 9350 17.9 16.5 108 17.8 14.8 120
BURGESS JUNCTION 7880 12.5 11.8 106 13.9 12.3 113
CLOUD PEAK RESERVOIR 9860 15.9 13.6 117 15.5 13.0 119
DOME LAKE 8880 11.9 12.7 94 15.2 13.3 114
GRAVE SPRINGS 8550 10.3 9.5 108 10.8 9.8 110
HANSEN SAWMILL 8360 7.4 6.5 114 9.6 8.3 116
MIDDLE POWDER 7760 12.0 11.9 101 9.7 12.5 78
POWDER RIVER PASS 9480 12.8 11.0 116 14.8 12.5 118
SUCKER CREEK 8880 14.7 11.9 124 16.5 13.7 120
TIE CREEK 6870 7.9 6.1 130 12.0 10.0 120
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Basin wide percent of average 112 115
BELLE FOURCHE
BLIND PARK 6890 8.1 8.6 94 11.0 11.2 98
COLE CANYON 5910 6.3 6.9 91 8.1 6.7 121
NORTH RAPID CREEK 6130 8.4 8.4 100 8.7 8.6 101
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Basin wide percent of average 95 105
UPPER N. PLATTE RIVER
COLUMBINE 9160 27.2 25.1 108 28.1 25.5 110
DIVIDE PEAK 8880 23.4 20.1 116 23.7 20.9 113
ELK RIVER 8700 27.1 19.7 138 23.5 19.8 119
JOE WRIGHT 10120 23.7 21.6 110 27.6 25.0 110
NORTH FRENCH CREEK 10130 31.4 29.8 105 30.0 24.9 120
OLD BATTLE 10000 34.1 32.6 105 39.7 34.9 114
SAGE CREEK BASIN 7850 17.9 11.7 153 18.0 12.1 149
SOUTH BRUSH CREEK 8440 14.6 13.2 111 17.1 16.6 103
TOWER 10500 43.6 46.1 95 -M 38.8 *
WEBBER SPRINGS 9250 26.9 26.4 102 30.5 27.0 113
WILLOW CREEK PASS 9540 16.0 12.2 131 15.7 13.0 121
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Basin wide percent of average 111 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.8 24.1 90 22.3 22.3 100
CASPER MTN. 7900 13.3 14.7 90 14.2 14.6 97
DEADMAN HILL 10220 17.8 16.6 107 18.4 17.1 108
DEER PARK 9700 15.8 17.3 91 20.4 22.2 92
LAPRELE CREEK 8375 8.5 11.0 77 11.3 12.7 89
RENO HILL 8400 14.0 14.4 97 15.9 15.1 105
ROACH 9700 19.6 17.3 113 22.2 18.8 118
SAND LAKE 10050 28.7 32.9 87 28.2 24.4 116
SOUTH PASS 9040 14.7 16.9 87 17.7 18.7 95
WINDY PEAK 7900 8.8 8.2 107 10.2 10.6 96
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Basin wide percent of average 94 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 17.0 10.9 156 17.2 16.0 108
DIVIDE PEAK 8880 23.4 20.1 116 23.7 20.9 113
OLD BATTLE 10000 34.1 32.6 105 39.7 34.9 114
SANDSTONE RS 8150 18.5 14.7 126 21.9 18.9 116
WHISKEY PARK 8950 33.9 30.5 111 34.3 29.0 118
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Basin wide percent of average 117 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.6 14.7 93 13.5 13.5 100
BLIND BULL SUM 8650 26.4 28.4 93 18.7 22.6 83
EAST RIM DIVIDE 7930 9.7 13.4 72 11.8 12.2 97
ELKHART PARK G.S. 9400 11.3 13.6 83 12.1 13.5 90
GROS VENTRE SUMMIT 8750 13.2 14.4 92 14.5 13.1 111
GUNSIGHT PASS 9820 12.7 -M * 14.8 -M *
KENDALL R.S. 7740 12.9 14.5 89 14.5 14.8 98
LOOMIS PARK 8240 17.0 17.5 97 18.5 17.7 105
NEW FORK LAKE 8340 10.0 11.4 88 9.8 11.5 85
SNIDER BASIN 8060 14.1 14.8 95 14.9 16.4 91
SPRING CREEK DIVIDE 9000 23.3 27.1 86 24.5 26.9 91
TRIPLE PEAK 8500 26.5 25.3 105 29.5 25.2 117
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Basin wide percent of average 91 97
LOWER GREEN RIVER
HAMS FORK 7840 12.7 11.9 107 10.7 12.4 86
HEWINTA 9519 16.4 12.2 134 17.2 14.8 116
HICKERSON PARK 9145 8.0 7.8 103 10.1 8.0 126
HOLE-IN-ROCK 9150 6.9 7.2 96 10.5 7.6 138
INDIAN CREEK 9425 26.7 28.4 94 -M 25.9 *
KELLEY R.S. 8180 15.6 17.2 91 18.4 20.7 89
STEEL CREEK PARK 10200 16.1 16.0 101 18.9 16.5 115
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Basin wide percent of average 102 107
UPPER BEAR RIVER
BUG LAKE 7950 18.4 21.3 86 17.3 19.5 89
HAYDEN FORK 9212 20.6 16.7 123 23.6 21.3 111
KELLEY R.S. 8180 15.6 17.2 91 18.4 20.7 89
LILY LAKE 9156 15.5 13.7 113 18.1 17.7 102
MONTE CRISTO 8960 29.5 30.2 98 26.5 25.9 102
SALT RIVER SUMMIT 7760 14.1 14.7 96 16.4 19.1 86
TRIAL LAKE 9992 22.7 25.4 89 24.3 25.3 96
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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.