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 MONDAY: FEBRUARY 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 15.0 15.5 97 21.5 18.0 119
COTTONWOOD CREEK 7670 19.0 17.6 108 20.6 22.2 93
GRAND TARGHEE 9260 38.6 -M * 26.3 -M *
GRANITE CREEK 6770 14.3 15.5 92 19.6 16.8 117
GRASSY LAKE 7265 25.7 28.4 90 33.2 30.0 111
GROS VENTRE SUMMIT 8750 11.1 11.1 100 12.2 10.4 117
GUNSIGHT PASS 9820 10.4 -M * 12.0 -M *
LEWIS LAKE DIVIDE 7850 25.6 28.6 90 30.6 30.4 101
PHILLIPS BENCH 8200 25.2 23.0 110 28.2 23.8 118
SALT RIVER SUMMIT 7760 11.1 11.7 95 13.1 15.3 86
SNAKE RIVER STATION 6920 13.9 15.9 87 21.7 18.9 115
SPRING CREEK DIVIDE 9000 18.6 21.3 87 18.9 21.8 87
THUMB DIVIDE 7980 13.4 14.7 91 16.1 15.4 105
TOGWOTEE PASS 9580 21.9 20.1 109 24.0 20.0 120
TWO OCEAN PLATEAU 9240 28.7 22.6 127 23.3 22.5 104
WILLOW CREEK 8380 24.8 24.5 101 29.9 26.1 115
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Basin wide percent of average 99 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.0 19.4 108 19.7 16.6 119
BLACK BEAR 8170 37.9 32.0 118 33.8 32.0 106
CANYON 7870 14.1 11.1 127 17.5 12.6 139
FISHER CREEK 9100 34.8 28.8 121 -M 29.5 *
MADISON PLATEAU 7750 24.4 20.2 121 27.4 21.3 129
NORTHEAST ENTRANCE 7350 7.7 9.5 81 11.1 10.5 106
PARKER PEAK 9400 20.8 17.8 117 -M 13.3 *
SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121
THUMB DIVIDE 7980 13.4 14.7 91 16.1 15.4 105
TWO OCEAN PLATEAU 9240 28.7 22.6 127 23.3 22.5 104
WHISKEY CREEK 6800 15.5 14.0 111 21.3 16.7 128
WHITE MILL 8700 22.4 19.7 114 23.0 22.0 105
WOLVERINE 7650 8.6 10.4 83 10.9 10.9 100
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Basin wide percent of average 112 114
WIND RIVER
BURROUGHS CREEK 8750 13.0 12.4 105 15.8 13.3 119
COLD SPRINGS 9630 5.4 7.1 76 8.4 8.2 102
DEER PARK 9700 11.6 14.3 81 15.0 17.3 87
HOBBS PARK 10100 10.2 11.7 87 10.6 9.6 110
LITTLE WARM 9370 7.8 9.3 84 11.1 10.6 105
SOUTH PASS 9040 10.7 13.8 78 13.5 14.6 92
ST. LAWRENCE ALT 8620 5.2 5.8 90 6.7 6.8 99
TOGWOTEE PASS 9580 21.9 20.1 109 24.0 20.0 120
TOWNSEND CREEK 8700 6.3 6.8 93 9.3 8.6 108
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Basin wide percent of average 91 105
BIGHORN BASIN
BALD MTN. 9380 12.9 15.6 83 12.4 13.7 91
BEAR TRAP MEADOW 8200 6.3 4.2 150 6.7 6.2 108
BLACKWATER 9780 19.9 20.1 99 18.6 16.7 111
BONE SPRINGS DIV 9350 12.8 12.8 100 14.1 11.2 126
EVENING STAR 9200 23.8 24.4 98 -M 21.1 *
GRAVE SPRINGS 8550 6.9 6.9 100 7.8 7.5 104
KIRWIN 9550 9.9 9.0 110 12.0 8.9 135
MARQUETTE 8760 3.3 6.8 49 7.0 7.3 96
MIDDLE POWDER 7760 7.5 8.7 86 6.4 9.3 69
OWL CREEK 8975 4.1 4.0 102 5.4 4.3 126
POWDER RIVER PASS 9480 9.2 8.5 108 11.1 9.7 114
SHELL CREEK 9580 12.5 11.6 108 12.3 10.6 116
SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121
SYLVAN ROAD 7120 9.0 11.0 82 17.7 15.3 116
TIMBER CREEK 7950 2.6 4.1 63 6.1 5.2 117
YOUNTS PEAK 8350 13.9 14.4 97 15.2 13.2 115
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Basin wide percent of average 95 111
SHOSHONE RIVER
BLACKWATER 9780 19.9 20.1 99 18.6 16.7 111
EVENING STAR 9200 23.8 24.4 98 -M 21.1 *
KIRWIN 9550 9.9 9.0 110 12.0 8.9 135
MARQUETTE 8760 3.3 6.8 49 7.0 7.3 96
SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121
SYLVAN ROAD 7120 9.0 11.0 82 17.7 15.3 116
YOUNTS PEAK 8350 13.9 14.4 97 15.2 13.2 115
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Basin wide percent of average 93 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.3 4.2 150 6.7 6.2 108
BIG GOOSE 7990 6.1 7.4 82 9.0 6.6 136
BONE SPRINGS DIV 9350 12.8 12.8 100 14.1 11.2 126
BURGESS JUNCTION 7880 8.7 8.7 100 10.2 9.2 111
CLOUD PEAK RESERVOIR 9860 11.6 9.7 120 11.7 9.5 123
DOME LAKE 8880 7.9 9.3 85 11.4 9.9 115
GRAVE SPRINGS 8550 6.9 6.9 100 7.8 7.5 104
HANSEN SAWMILL 8360 4.9 5.0 98 7.1 6.1 116
MIDDLE POWDER 7760 7.5 8.7 86 6.4 9.3 69
POWDER RIVER PASS 9480 9.2 8.5 108 11.1 9.7 114
SUCKER CREEK 8880 10.1 8.8 115 12.1 10.2 119
TIE CREEK 6870 4.9 4.7 104 8.8 7.7 114
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Basin wide percent of average 102 113
BELLE FOURCHE
BLIND PARK 6890 5.8 6.5 89 8.5 9.0 94
COLE CANYON 5910 4.9 5.5 89 6.0 5.3 113
NORTH RAPID CREEK 6130 6.8 6.5 105 6.8 7.2 94
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Basin wide percent of average 95 99
UPPER N. PLATTE RIVER
COLUMBINE 9160 21.1 21.1 100 23.1 20.1 115
DIVIDE PEAK 8880 19.4 15.1 128 19.8 16.4 121
ELK RIVER 8700 21.0 15.5 135 20.0 15.5 129
JOE WRIGHT 10120 19.0 16.7 114 21.8 19.4 112
NORTH FRENCH CREEK 10130 24.5 21.8 112 24.4 19.5 125
OLD BATTLE 10000 27.5 25.2 109 31.9 27.3 117
SAGE CREEK BASIN 7850 14.7 8.8 167 15.6 9.5 164
SOUTH BRUSH CREEK 8440 10.4 9.5 109 13.8 12.9 107
TOWER 10500 -M 36.3 * -M 30.8 *
WEBBER SPRINGS 9250 21.3 20.3 105 25.0 21.3 117
WILLOW CREEK PASS 9540 12.8 9.3 138 13.0 10.0 130
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Basin wide percent of average 117 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 17.2 18.3 94 17.8 16.9 105
CASPER MTN. 7900 9.0 10.9 83 10.7 10.7 100
DEADMAN HILL 10220 13.9 12.5 111 14.3 12.7 113
DEER PARK 9700 11.6 14.3 81 15.0 17.3 87
LAPRELE CREEK 8375 5.7 8.6 66 8.2 9.6 85
RENO HILL 8400 9.2 10.0 92 11.0 11.1 99
ROACH 9700 15.8 13.4 118 18.5 14.2 130
SAND LAKE 10050 22.0 24.1 91 22.1 18.6 119
SOUTH PASS 9040 10.7 13.8 78 13.5 14.6 92
WINDY PEAK 7900 6.2 5.8 107 7.8 8.2 95
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Basin wide percent of average 92 104
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.7 9.3 147 14.3 11.9 120
DIVIDE PEAK 8880 19.4 15.1 128 19.8 16.4 121
OLD BATTLE 10000 27.5 25.2 109 31.9 27.3 117
SANDSTONE RS 8150 14.6 12.0 122 18.2 15.1 121
WHISKEY PARK 8950 25.9 22.8 114 29.2 22.7 129
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Basin wide percent of average 120 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.7 11.7 91 10.9 10.9 100
BLIND BULL SUM 8650 20.0 22.2 90 15.4 18.4 84
EAST RIM DIVIDE 7930 7.3 10.6 69 9.4 9.8 96
ELKHART PARK G.S. 9400 9.3 10.7 87 10.0 10.6 94
GROS VENTRE SUMMIT 8750 11.1 11.1 100 12.2 10.4 117
GUNSIGHT PASS 9820 10.4 -M * 12.0 -M *
KENDALL R.S. 7740 9.7 11.9 82 11.5 12.1 95
LOOMIS PARK 8240 13.0 13.9 94 14.7 14.3 103
NEW FORK LAKE 8340 8.0 9.3 86 8.2 9.3 88
SNIDER BASIN 8060 10.7 12.0 89 11.7 13.3 88
SPRING CREEK DIVIDE 9000 18.6 21.3 87 18.9 21.8 87
TRIPLE PEAK 8500 19.2 20.1 96 22.3 19.9 112
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Basin wide percent of average 89 96
LOWER GREEN RIVER
HAMS FORK 7840 9.7 10.5 92 8.3 10.0 83
HEWINTA 9519 10.4 8.7 120 14.1 11.2 126
HICKERSON PARK 9145 6.0 5.6 107 8.3 6.0 138
HOLE-IN-ROCK 9150 5.0 5.4 93 8.3 5.6 148
INDIAN CREEK 9425 18.8 21.4 88 13.7 20.4 67
KELLEY R.S. 8180 11.9 13.4 89 14.4 16.6 87
STEEL CREEK PARK 10200 12.0 12.1 99 15.5 12.4 125
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Basin wide percent of average 96 100
UPPER BEAR RIVER
BUG LAKE 7950 15.0 16.4 91 14.5 15.6 93
HAYDEN FORK 9212 15.9 12.6 126 19.7 16.5 119
KELLEY R.S. 8180 11.9 13.4 89 14.4 16.6 87
LILY LAKE 9156 12.3 10.4 118 14.9 13.8 108
MONTE CRISTO 8960 23.8 23.6 101 22.3 20.4 109
SALT RIVER SUMMIT 7760 11.1 11.7 95 13.1 15.3 86
TRIAL LAKE 9992 17.4 19.8 88 19.5 19.7 99
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Basin wide percent of average 100 100
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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.