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 27 , 2006
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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 17.9 15.8 113 22.6 18.3 123
COTTONWOOD CREEK 7600 24.5 18.1 135 26.9 22.7 119
GRANITE CREEK 6770 18.4 15.8 116 20.6 17.1 120
GRASSY LAKE 7265 31.5 29.0 109 35.5 30.6 116
GROS VENTRE SUMMIT 8750 10.0 11.3 88 10.7 10.7 100
LEWIS LAKE DIVIDE 7850 34.8 29.2 119 34.0 31.0 110
PHILLIPS BENCH 8200 26.9 23.5 114 28.0 24.2 116
SALT RIVER SUMMIT 7600 13.6 12.0 113 16.5 15.6 106
SNAKE RIVER STATION 6920 17.6 16.3 108 22.7 19.2 118
SPRING CREEK DIVIDE 9000 26.9 21.8 123 -M 22.2 *
THUMB DIVIDE 7980 14.9 15.1 99 15.7 15.8 99
TOGWOTEE PASS 9580 21.1 20.4 103 22.3 20.4 109
TWO OCEAN PLATEAU 9240 30.8 23.0 134 24.3 23.0 106
WILLOW CREEK 8450 29.1 25.0 116 33.5 26.6 126
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Basin wide percent of average 115 114
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.2 19.5 98 16.9 16.9 100
BLACK BEAR 8170 40.9 32.4 126 -M 32.8 *
CANYON 8090 12.1 11.1 109 14.9 12.8 116
FISHER CREEK 9100 34.9 29.2 120 -M 30.2 *
MADISON PLATEAU 7750 21.8 20.6 106 25.3 21.8 116
NORTHEAST ENTRANCE 7350 9.0 9.6 94 10.7 10.7 100
PARKER PEAK 9400 16.0 17.9 89 14.6 13.5 108
SYLVAN LAKE 8420 14.9 18.5 81 18.7 17.7 106
THUMB DIVIDE 7980 14.9 15.1 99 15.7 15.8 99
TWO OCEAN PLATEAU 9240 30.8 23.0 134 24.3 23.0 106
WHISKEY CREEK 6800 12.8 14.2 90 19.1 17.1 112
WHITE MILL 8700 22.2 20.0 111 -M 22.4 *
WOLVERINE 7650 8.5 10.5 81 8.1 11.1 73
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Basin wide percent of average 107 105
WIND RIVER
BURROUGHS CREEK 8750 12.0 12.4 97 14.2 13.5 105
COLD SPRINGS 9630 4.2 7.1 59 6.7 8.3 81
DEER PARK 9700 13.7 14.3 96 16.9 17.6 96
HOBBS PARK 10100 8.1 11.7 69 8.9 9.8 91
LITTLE WARM 9370 7.3 9.4 78 9.8 10.8 91
SOUTH PASS 9040 13.5 13.8 98 14.4 14.8 97
ST. LAWRENCE ALT 8620 2.5 5.8 43 4.9 6.9 71
TOGWOTEE PASS 9580 21.1 20.4 103 22.3 20.4 109
TOWNSEND CREEK 8700 5.2 6.8 76 7.7 8.8 88
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Basin wide percent of average 86 95
BIGHORN BASIN
BALD MTN. 9380 12.7 15.8 80 10.1 13.9 73
BEAR TRAP MEADOW 8200 4.8 4.2 114 6.4 6.3 102
BLACKWATER 9780 18.8 20.1 94 17.1 17.0 101
BONE SPRINGS DIV 9350 11.2 13.0 86 11.4 11.5 99
EVENING STAR 9200 21.8 24.6 89 24.1 21.5 112
GRAVE SPRINGS 8550 7.8 7.2 108 9.6 7.7 125
KIRWIN 9550 8.2 9.0 91 9.1 9.1 100
MARQUETTE 8760 1.7 6.8 25 6.3 7.4 85
MIDDLE POWDER 7760 10.4 8.9 117 8.9 9.5 94
OWL CREEK 8975 2.5 4.0 62 4.7 4.4 107
POWDER RIVER PASS 9480 8.2 8.6 95 9.7 9.9 98
SHELL CREEK 9580 11.5 11.6 99 10.7 10.7 100
SYLVAN LAKE 8420 14.9 18.5 81 18.7 17.7 106
SYLVAN ROAD 7120 9.2 11.2 82 14.2 15.4 92
TIMBER CREEK 7950 1.6 4.2 38 4.0 5.3 75
YOUNTS PEAK 8350 -M 14.4 * 15.2 13.4 113
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Basin wide percent of average 87 100
SHOSHONE RIVER
BLACKWATER 9780 18.8 20.1 94 17.1 17.0 101
EVENING STAR 9200 21.8 24.6 89 24.1 21.5 112
KIRWIN 9550 8.2 9.0 91 9.1 9.1 100
MARQUETTE 8760 1.7 6.8 25 6.3 7.4 85
SYLVAN LAKE 8420 14.9 18.5 81 18.7 17.7 106
SYLVAN ROAD 7120 9.2 11.2 82 14.2 15.4 92
YOUNTS PEAK 8350 -M 14.4 * 15.2 13.4 113
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Basin wide percent of average 83 103
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.8 4.2 114 6.4 6.3 102
BIG GOOSE 7990 5.3 7.6 70 7.4 6.7 110
BONE SPRINGS DIV 9350 11.2 13.0 86 11.4 11.5 99
BURGESS JUNCTION 7880 8.0 8.9 90 9.4 9.4 100
CLOUD PEAK RESERVOIR 9860 10.6 9.8 108 9.9 9.7 102
DOME LAKE 8880 8.6 9.4 91 9.2 10.1 91
GRAVE SPRINGS 8550 7.8 7.2 108 9.6 7.7 125
HANSEN SAWMILL 8360 3.4 5.1 67 5.4 6.2 87
MIDDLE POWDER 7760 10.4 8.9 117 8.9 9.5 94
POWDER RIVER PASS 9480 8.2 8.6 95 9.7 9.9 98
SUCKER CREEK 8880 8.5 9.0 94 11.3 10.4 109
TIE CREEK 6870 4.5 4.8 94 8.4 7.8 108
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Basin wide percent of average 95 102
BELLE FOURCHE
BLIND PARK 6890 6.9 6.9 100 9.3 9.2 101
COLE CANYON 5910 4.7 5.0 94 7.7 -M *
NORTH RAPID CREEK 6130 6.0 6.7 90 7.3 7.4 99
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Basin wide percent of average 95 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 27.0 21.5 126 29.2 20.6 142
DIVIDE PEAK 8860 14.7 15.4 95 17.5 16.8 104
ELK RIVER 8700 16.4 15.8 104 17.5 15.9 110
JOE WRIGHT 10120 18.1 17.0 106 22.0 19.9 111
NORTH FRENCH CREEK 10130 28.3 22.4 126 26.7 19.9 134
OLD BATTLE 9920 30.5 25.8 118 34.1 28.1 121
SAGE CREEK BASIN 7850 10.5 8.9 118 12.3 9.8 126
SOUTH BRUSH CREEK 8440 9.9 9.8 101 14.2 13.1 108
TOWER 10500 44.4 37.1 120 -M 31.4 *
WEBBER SPRINGS 9250 22.1 20.9 106 27.9 21.8 128
WILLOW CREEK PASS 9540 10.7 9.4 114 11.4 10.2 112
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Basin wide percent of average 114 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 20.8 18.7 111 17.7 17.3 102
CASPER MTN. 7850 13.6 11.1 123 14.8 10.9 136
DEADMAN HILL 10220 13.0 12.8 102 14.3 13.1 109
DEER PARK 9700 13.7 14.3 96 16.9 17.6 96
LAPRELE CREEK 8375 8.5 8.8 97 9.3 9.9 94
RENO HILL 8500 13.2 10.2 129 14.6 11.3 129
ROACH 9700 12.2 13.7 89 15.3 14.7 104
SAND LAKE 10050 26.7 24.8 108 25.6 19.1 134
SOUTH PASS 9040 13.5 13.8 98 14.4 14.8 97
WINDY PEAK 7900 5.9 5.9 100 7.8 8.4 93
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Basin wide percent of average 105 110
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.6 9.6 121 13.7 12.1 113
DIVIDE PEAK 8860 14.7 15.4 95 17.5 16.8 104
OLD BATTLE 9920 30.5 25.8 118 34.1 28.1 121
SANDSTONE RS 8150 12.5 12.3 102 18.1 15.5 117
WHISKEY PARK 8950 31.2 23.4 133 29.8 23.1 129
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Basin wide percent of average 116 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.5 11.9 105 12.8 11.1 115
BLIND BULL SUM 8900 23.9 22.7 105 18.3 18.8 97
EAST RIM DIVIDE 7930 9.5 10.8 88 10.1 10.0 101
ELKHART PARK G.S. 9400 11.9 10.9 109 12.5 10.8 116
GROS VENTRE SUMMIT 8750 10.0 11.3 88 10.7 10.7 100
KENDALL R.S. 7740 12.9 12.2 106 13.6 12.3 111
LOOMIS PARK 8240 16.2 14.2 114 17.1 14.6 117
NEW FORK LAKE 8340 9.6 9.5 101 9.4 9.5 99
SNIDER BASIN 8060 15.2 12.2 125 14.8 13.5 110
SPRING CREEK DIVIDE 9000 26.9 21.8 123 -M 22.2 *
TRIPLE PEAK 8500 25.7 20.6 125 26.5 20.4 130
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Basin wide percent of average 110 111
LOWER GREEN RIVER
HAMS FORK 7840 13.2 10.8 122 12.1 10.3 117
HEWINTA 9500 9.6 8.9 108 12.3 11.4 108
HICKERSON PARK 9100 3.4 5.7 60 5.5 6.1 90
HOLE-IN-ROCK 9150 5.7 5.6 102 6.4 5.7 112
INDIAN CREEK 9425 26.3 21.9 120 -M 20.8 *
KELLEY R.S. 8180 17.2 13.7 126 19.0 17.0 112
STEEL CREEK PARK 10100 12.6 12.4 102 14.0 12.7 110
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Basin wide percent of average 111 110
UPPER BEAR RIVER
BUG LAKE 7950 20.8 16.8 124 18.4 16.0 115
HAYDEN FORK 9100 16.8 12.9 130 20.0 16.9 118
KELLEY R.S. 8180 17.2 13.7 126 19.0 17.0 112
LILY LAKE 9050 11.5 10.6 108 13.4 14.1 95
MONTE CRISTO 8960 26.1 24.2 108 25.9 20.8 125
SALT RIVER SUMMIT 7600 13.6 12.0 113 16.5 15.6 106
TRIAL LAKE 9960 23.8 20.2 118 23.2 20.2 115
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Basin wide percent of average 118 113
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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 1971-2000.
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.