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 TUESDAY: FEBRUARY 22 , 2011
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 15.4 15.2 101 18.4 17.6 105
COTTONWOOD CREEK 7670 20.8 17.1 122 27.8 21.7 128
GRAND TARGHEE 9260 37.8 -M * 26.1 -M *
GRANITE CREEK 6770 15.3 15.1 101 17.4 16.4 106
GRASSY LAKE 7265 27.8 27.8 100 30.5 29.4 104
GROS VENTRE SUMMIT 8750 11.8 10.8 109 11.4 10.1 113
GUNSIGHT PASS 9820 13.2 -M * 13.3 -M *
LEWIS LAKE DIVIDE 7850 26.3 27.9 94 26.8 29.7 90
PHILLIPS BENCH 8200 23.4 22.4 104 24.3 23.2 105
SALT RIVER SUMMIT 7760 12.9 11.4 113 17.0 14.9 114
SNAKE RIVER STATION 6920 -M 15.5 * -M 18.4 *
SPRING CREEK DIVIDE 9000 26.6 20.8 128 26.0 21.3 122
THUMB DIVIDE 7980 15.2 14.3 106 15.4 15.1 102
TOGWOTEE PASS 9580 22.3 19.7 113 23.8 19.6 121
TWO OCEAN PLATEAU 9240 25.3 22.2 114 21.2 22.0 96
WILLOW CREEK 8380 25.9 24.0 108 31.0 25.5 122
----- -----
Basin wide percent of average 108 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 19.6 19.0 103 18.9 16.3 116
BLACK BEAR 8170 33.3 31.2 107 32.4 31.2 104
CANYON 7870 12.9 10.9 118 14.0 12.4 113
FISHER CREEK 9100 31.1 28.2 110 29.9 28.9 103
MADISON PLATEAU 7750 21.0 19.8 106 22.9 20.8 110
NORTHEAST ENTRANCE 7350 10.5 9.3 113 12.2 10.3 118
PARKER PEAK 9400 22.2 17.4 128 20.1 13.0 155
SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126
THUMB DIVIDE 7980 15.2 14.3 106 15.4 15.1 102
TWO OCEAN PLATEAU 9240 25.3 22.2 114 21.2 22.0 96
WHISKEY CREEK 6800 15.0 13.7 109 17.7 16.4 108
WHITE MILL 8700 21.4 19.4 110 21.9 21.5 102
WOLVERINE 7650 12.0 10.2 118 11.5 10.7 107
----- -----
Basin wide percent of average 110 110
WIND RIVER
BURROUGHS CREEK 8750 11.6 12.1 96 12.1 13.0 93
CASTLE CREEK 8400 5.0 -M * 5.9 -M *
COLD SPRINGS 9630 6.6 6.9 96 6.7 8.0 84
DEER PARK 9700 15.4 13.9 111 16.9 17.0 99
HOBBS PARK 10100 11.1 11.4 97 9.7 9.4 103
LITTLE WARM 9370 9.1 9.1 100 9.2 10.4 88
SOUTH PASS 9040 13.4 13.5 99 11.6 14.3 81
ST. LAWRENCE ALT 8620 4.0 5.6 71 5.4 6.7 81
TOGWOTEE PASS 9580 22.3 19.7 113 23.8 19.6 121
TOWNSEND CREEK 8700 6.9 6.6 105 9.0 8.4 107
----- -----
Basin wide percent of average 102 98
BIGHORN BASIN
BALD MTN. 9380 19.0 15.3 124 15.6 13.4 116
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108
BLACKWATER 9780 19.6 19.5 101 19.0 16.4 116
BONE SPRINGS DIV 9350 15.2 12.4 123 12.5 11.0 114
EVENING STAR 9200 24.8 23.8 104 27.4 20.7 132
GRAVE SPRINGS 8550 6.4 6.7 96 6.7 7.3 92
KIRWIN 9550 8.7 8.8 99 9.6 8.7 110
MARQUETTE 8760 1.7 6.6 26 5.1 7.1 72
MIDDLE POWDER 7760 7.4 8.4 88 9.1 9.2 99
OWL CREEK 8975 4.3 3.9 110 4.2 4.2 100
POWDER RIVER PASS 9480 11.2 8.3 135 13.1 9.5 138
SHELL CREEK 9580 13.2 11.2 118 12.0 10.4 115
SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126
SYLVAN ROAD 7120 12.5 10.8 116 16.1 15.1 107
TIMBER CREEK 7950 2.7 4.0 68 3.5 5.1 69
YOUNTS PEAK 8350 13.0 14.1 92 11.3 13.0 87
----- -----
Basin wide percent of average 105 111
SHOSHONE RIVER
BLACKWATER 9780 19.6 19.5 101 19.0 16.4 116
EVENING STAR 9200 24.8 23.8 104 27.4 20.7 132
KIRWIN 9550 8.7 8.8 99 9.6 8.7 110
MARQUETTE 8760 1.7 6.6 26 5.1 7.1 72
SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126
SYLVAN ROAD 7120 12.5 10.8 116 16.1 15.1 107
YOUNTS PEAK 8350 13.0 14.1 92 11.3 13.0 87
----- -----
Basin wide percent of average 97 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108
BIG GOOSE 7990 5.9 7.2 82 7.8 6.4 122
BONE SPRINGS DIV 9350 15.2 12.4 123 12.5 11.0 114
BURGESS JUNCTION 7880 8.6 8.5 101 9.5 9.0 106
CLOUD PEAK RESERVOIR 9860 12.3 9.5 129 11.9 9.3 128
DOME LAKE 8880 9.2 9.2 100 10.0 9.8 102
GRAVE SPRINGS 8550 6.4 6.7 96 6.7 7.3 92
HANSEN SAWMILL 8360 5.0 4.9 102 5.7 6.0 95
LITTLE GOOSE 8870 6.7 -M * 10.8 -M *
MIDDLE POWDER 7760 7.4 8.4 88 9.1 9.2 99
POWDER RIVER PASS 9480 11.2 8.3 135 13.1 9.5 138
SOLDIER PARK 8720 5.1 -M * 6.7 -M *
SUCKER CREEK 8880 10.0 8.6 116 11.1 10.0 111
TIE CREEK 6870 5.5 4.6 120 7.9 7.5 105
----- -----
Basin wide percent of average 111 111
BELLE FOURCHE
BLIND PARK 6890 8.2 6.3 130 14.0 8.8 159
COLE CANYON 5910 6.7 5.4 124 9.8 5.3 185
NORTH RAPID CREEK 6130 7.8 6.3 124 12.1 7.1 170
----- -----
Basin wide percent of average 126 169
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.6 15.3 135 21.9 16.5 133
COLUMBINE 9160 26.7 20.6 130 28.0 19.7 142
DIVIDE PEAK 8880 17.2 14.8 116 21.3 16.0 133
ELK RIVER 8700 19.7 15.1 130 21.4 15.1 142
JOE WRIGHT 10120 22.3 16.3 137 27.9 19.0 147
NORTH FRENCH CREEK 10130 34.2 21.3 161 -M 19.1 *
OLD BATTLE 10000 33.1 24.5 135 27.8 26.6 105
SAGE CREEK BASIN 7850 16.2 8.6 188 14.9 9.3 160
SOUTH BRUSH CREEK 8440 14.0 9.2 152 17.1 12.7 135
TOWER 10500 43.5 35.6 122 43.9 30.1 146
WEBBER SPRINGS 9250 23.9 19.7 121 28.7 20.8 138
WILLOW CREEK PASS 9540 14.2 9.0 158 13.7 9.8 140
----- -----
Basin wide percent of average 136 136
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.7 18.0 132 24.2 16.5 147
CASPER MTN. 7900 9.0 10.6 85 11.6 10.4 112
DEADMAN HILL 10220 16.6 12.3 135 17.6 12.4 142
DEER PARK 9700 15.4 13.9 111 16.9 17.0 99
LAPRELE CREEK 8375 9.8 8.4 117 11.1 9.4 118
RENO HILL 8400 11.3 9.7 116 13.2 10.8 122
ROACH 9700 16.6 13.2 126 20.0 13.8 145
SAND LAKE 10050 28.5 23.5 121 27.1 18.2 149
SOUTH PASS 9040 13.4 13.5 99 11.6 14.3 81
WINDY PEAK 7900 8.1 5.6 145 10.4 8.0 130
----- -----
Basin wide percent of average 118 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.5 9.1 82 10.9 11.6 94
DIVIDE PEAK 8880 17.2 14.8 116 21.3 16.0 133
OLD BATTLE 10000 33.1 24.5 135 27.8 26.6 105
SANDSTONE RS 8150 11.5 11.7 98 -M 14.8 *
WHISKEY PARK 8950 -M 22.3 * 31.6 22.2 142
----- -----
Basin wide percent of average 115 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.3 11.4 99 11.6 10.7 108
BLIND BULL SUM 8650 22.2 21.7 102 15.9 18.0 88
EAST RIM DIVIDE 7930 11.6 10.4 112 10.1 9.6 105
ELKHART PARK G.S. 9400 10.1 10.5 96 10.1 10.3 98
GROS VENTRE SUMMIT 8750 11.8 10.8 109 11.4 10.1 113
GUNSIGHT PASS 9820 13.2 -M * 13.3 -M *
KENDALL R.S. 7740 9.7 11.6 84 11.5 11.7 98
LOOMIS PARK 8240 14.7 13.5 109 15.7 14.0 112
NEW FORK LAKE 8340 9.7 9.1 107 9.0 9.1 99
POCKET CREEK 9360 8.8 -M * 11.4 -M *
SNIDER BASIN 8060 15.6 11.7 133 15.5 13.0 119
SPRING CREEK DIVIDE 9000 26.6 20.8 128 26.0 21.3 122
TRIPLE PEAK 8500 23.5 19.7 119 25.4 19.4 131
----- -----
Basin wide percent of average 110 110
LOWER GREEN RIVER
HAMS FORK 7840 12.6 10.2 124 12.1 9.8 123
HEWINTA 9519 9.7 8.4 115 13.2 10.9 121
HICKERSON PARK 9145 5.8 5.5 105 7.5 5.9 127
HOLE-IN-ROCK 9150 6.5 5.3 123 8.2 5.5 149
INDIAN CREEK 9425 24.0 20.9 115 22.0 19.9 111
KELLEY R.S. 8180 15.9 13.0 122 18.7 16.3 115
STEEL CREEK PARK 10200 13.5 11.7 115 16.3 12.1 135
----- -----
Basin wide percent of average 117 122
UPPER BEAR RIVER
BUG LAKE 7950 21.8 16.0 136 22.1 15.2 145
HAYDEN FORK 9212 17.8 12.2 146 23.7 16.1 147
KELLEY R.S. 8180 15.9 13.0 122 18.7 16.3 115
LILY LAKE 9156 14.9 10.1 148 17.6 13.5 130
MONTE CRISTO 8960 26.9 22.9 117 27.3 19.9 137
SALT RIVER SUMMIT 7760 12.9 11.4 113 17.0 14.9 114
TRIAL LAKE 9992 27.7 19.3 144 26.8 19.2 140
----- -----
Basin wide percent of average 131 133
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.