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: FEBRUARY 26 , 2011
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 16.3 15.6 104 19.3 18.1 107
COTTONWOOD CREEK 7670 21.6 17.7 122 28.9 22.4 129
GRAND TARGHEE 9260 38.8 -M * 26.1 -M *
GRANITE CREEK 6770 16.7 15.6 107 18.5 16.9 109
GRASSY LAKE 7265 29.5 28.6 103 32.0 30.2 106
GROS VENTRE SUMMIT 8750 12.4 11.1 112 12.1 10.4 116
GUNSIGHT PASS 9820 13.7 -M * 13.8 -M *
LEWIS LAKE DIVIDE 7850 28.5 28.8 99 -M 30.6 *
PHILLIPS BENCH 8200 24.6 23.2 106 25.4 24.0 106
SALT RIVER SUMMIT 7760 14.3 11.8 121 18.3 15.4 119
SNAKE RIVER STATION 6920 -M 16.0 * 21.0 19.0 111
SPRING CREEK DIVIDE 9000 28.2 21.5 131 27.4 21.9 125
THUMB DIVIDE 7980 16.4 14.8 111 16.2 15.6 104
TOGWOTEE PASS 9580 23.2 20.2 115 24.6 20.1 122
TWO OCEAN PLATEAU 9240 -M 22.7 * -M 22.7 *
WILLOW CREEK 8380 27.4 24.7 111 32.3 26.3 123
----- -----
Basin wide percent of average 111 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.2 19.5 104 19.4 16.7 116
BLACK BEAR 8170 34.9 32.2 108 33.8 32.3 105
CANYON 7870 13.5 11.2 121 14.4 12.7 113
FISHER CREEK 9100 32.0 28.9 111 30.7 29.7 103
MADISON PLATEAU 7750 22.1 20.3 109 23.9 21.5 111
NORTHEAST ENTRANCE 7350 10.9 9.5 115 12.3 10.5 117
PARKER PEAK 9400 22.9 17.9 128 -M 13.4 *
SYLVAN LAKE 8420 19.3 18.5 104 22.6 17.5 129
THUMB DIVIDE 7980 16.4 14.8 111 16.2 15.6 104
TWO OCEAN PLATEAU 9240 -M 22.7 * -M 22.7 *
WHISKEY CREEK 6800 15.8 14.0 113 18.4 16.9 109
WHITE MILL 8700 21.8 19.8 110 22.1 22.1 100
WOLVERINE 7650 12.6 10.5 120 11.6 10.9 106
----- -----
Basin wide percent of average 112 109
WIND RIVER
BURROUGHS CREEK 8750 12.1 12.5 97 12.6 13.4 94
CASTLE CREEK 8400 5.4 -M * 6.0 -M *
COLD SPRINGS 9630 6.9 7.2 96 6.5 8.2 79
DEER PARK 9700 16.3 14.4 113 18.4 17.4 106
HOBBS PARK 10100 11.9 11.7 102 10.4 9.6 108
LITTLE WARM 9370 9.7 9.4 103 9.7 10.6 92
SOUTH PASS 9040 14.9 13.8 108 12.8 14.6 88
ST. LAWRENCE ALT 8620 4.4 5.8 76 5.7 6.8 84
TOGWOTEE PASS 9580 23.2 20.2 115 24.6 20.1 122
TOWNSEND CREEK 8700 7.3 6.9 106 9.1 8.7 105
----- -----
Basin wide percent of average 105 100
BIGHORN BASIN
BALD MTN. 9380 19.2 15.7 122 15.5 13.8 112
BEAR TRAP MEADOW 8200 6.1 4.2 145 6.3 6.3 100
BLACKWATER 9780 20.6 20.2 102 19.9 16.8 118
BONE SPRINGS DIV 9350 15.5 12.9 120 12.6 11.3 112
EVENING STAR 9200 25.8 24.6 105 27.9 21.3 131
GRAVE SPRINGS 8550 6.6 7.1 93 6.8 7.5 91
KIRWIN 9550 9.0 9.0 100 9.8 9.0 109
MARQUETTE 8760 1.9 6.8 28 4.7 7.3 64
MIDDLE POWDER 7760 7.4 8.9 83 9.1 9.4 97
OWL CREEK 8975 4.4 4.1 107 4.3 4.3 100
POWDER RIVER PASS 9480 11.4 8.6 133 13.1 9.8 134
SHELL CREEK 9580 13.4 11.6 116 12.2 10.6 115
SYLVAN LAKE 8420 19.3 18.5 104 22.6 17.5 129
SYLVAN ROAD 7120 13.3 11.1 120 17.0 15.3 111
TIMBER CREEK 7950 3.0 4.2 71 3.7 5.3 70
YOUNTS PEAK 8350 13.6 14.4 94 11.6 13.3 87
----- -----
Basin wide percent of average 105 110
SHOSHONE RIVER
BLACKWATER 9780 20.6 20.2 102 19.9 16.8 118
EVENING STAR 9200 25.8 24.6 105 27.9 21.3 131
KIRWIN 9550 9.0 9.0 100 9.8 9.0 109
MARQUETTE 8760 1.9 6.8 28 4.7 7.3 64
SYLVAN LAKE 8420 19.3 18.5 104 22.6 17.5 129
SYLVAN ROAD 7120 13.3 11.1 120 17.0 15.3 111
YOUNTS PEAK 8350 13.6 14.4 94 11.6 13.3 87
----- -----
Basin wide percent of average 99 113
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 4.2 145 6.3 6.3 100
BIG GOOSE 7990 5.8 7.4 78 7.5 6.6 114
BONE SPRINGS DIV 9350 15.5 12.9 120 12.6 11.3 112
BURGESS JUNCTION 7880 8.7 8.9 98 9.4 9.3 101
CLOUD PEAK RESERVOIR 9860 12.4 9.8 127 11.1 9.6 116
DOME LAKE 8880 9.4 9.4 100 10.1 10.0 101
GRAVE SPRINGS 8550 6.6 7.1 93 6.8 7.5 91
HANSEN SAWMILL 8360 5.0 5.0 100 5.8 6.2 94
LITTLE GOOSE 8870 6.7 -M * 10.7 -M *
MIDDLE POWDER 7760 7.4 8.9 83 9.1 9.4 97
POWDER RIVER PASS 9480 11.4 8.6 133 13.1 9.8 134
SOLDIER PARK 8720 5.1 -M * 6.7 -M *
SUCKER CREEK 8880 10.0 8.9 112 11.1 10.2 109
TIE CREEK 6870 5.4 4.9 110 7.7 7.7 100
----- -----
Basin wide percent of average 108 106
BELLE FOURCHE
BLIND PARK 6890 8.6 6.8 126 14.2 9.0 158
COLE CANYON 5910 6.7 5.6 120 10.2 5.4 189
NORTH RAPID CREEK 6130 7.9 6.6 120 11.7 7.3 160
----- -----
Basin wide percent of average 122 166
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 21.0 15.7 134 22.0 16.9 130
COLUMBINE 9160 27.9 21.2 132 29.2 20.3 144
DIVIDE PEAK 8880 18.5 15.2 122 22.4 16.5 136
ELK RIVER 8700 20.8 15.6 133 22.3 15.6 143
JOE WRIGHT 10120 23.5 16.8 140 27.9 19.6 142
NORTH FRENCH CREEK 10130 35.9 22.0 163 32.2 19.6 164
OLD BATTLE 10000 34.7 25.4 137 27.8 27.5 101
SAGE CREEK BASIN 7850 17.1 8.8 194 15.6 9.6 163
SOUTH BRUSH CREEK 8440 15.0 9.6 156 18.1 13.0 139
TOWER 10500 45.5 36.6 124 44.7 31.1 144
WEBBER SPRINGS 9250 25.1 20.5 122 29.9 21.5 139
WILLOW CREEK PASS 9540 15.1 9.3 162 14.3 10.1 142
----- -----
Basin wide percent of average 138 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 24.9 18.5 135 25.0 17.0 147
CASPER MTN. 7900 9.4 11.0 85 12.0 10.7 112
DEADMAN HILL 10220 17.6 12.6 140 18.6 12.9 144
DEER PARK 9700 16.3 14.4 113 18.4 17.4 106
LAPRELE CREEK 8375 10.5 8.7 121 11.7 9.7 121
RENO HILL 8400 11.9 10.1 118 13.9 11.2 124
ROACH 9700 17.2 13.5 127 20.6 14.4 143
SAND LAKE 10050 30.0 24.3 123 28.5 18.8 152
SOUTH PASS 9040 14.9 13.8 108 12.8 14.6 88
WINDY PEAK 7900 8.7 5.8 150 11.0 8.2 134
----- -----
Basin wide percent of average 122 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 9.4 * 11.2 12.0 93
DIVIDE PEAK 8880 18.5 15.2 122 22.4 16.5 136
OLD BATTLE 10000 34.7 25.4 137 27.8 27.5 101
SANDSTONE RS 8150 12.1 12.1 100 -M 15.2 *
WHISKEY PARK 8950 -M 23.0 * 32.3 22.8 142
----- -----
Basin wide percent of average 124 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 11.8 105 12.7 11.0 115
BLIND BULL SUM 8650 23.4 22.3 105 16.6 18.6 89
EAST RIM DIVIDE 7930 12.4 10.7 116 10.7 9.9 108
ELKHART PARK G.S. 9400 10.6 10.8 98 10.6 10.6 100
GROS VENTRE SUMMIT 8750 12.4 11.1 112 12.1 10.4 116
GUNSIGHT PASS 9820 13.7 -M * 13.8 -M *
KENDALL R.S. 7740 10.9 12.0 91 12.5 12.2 102
LOOMIS PARK 8240 16.2 14.0 116 16.8 14.4 117
NEW FORK LAKE 8340 10.3 9.4 110 9.5 9.4 101
POCKET CREEK 9360 9.8 -M * 12.2 -M *
SNIDER BASIN 8060 16.7 12.1 138 16.5 13.4 123
SPRING CREEK DIVIDE 9000 28.2 21.5 131 27.4 21.9 125
TRIPLE PEAK 8500 24.6 20.2 122 26.6 20.1 132
----- -----
Basin wide percent of average 114 113
LOWER GREEN RIVER
HAMS FORK 7840 14.1 10.6 133 13.0 10.1 129
HEWINTA 9519 10.4 8.8 118 13.8 11.3 122
HICKERSON PARK 9145 6.3 5.7 111 8.0 6.1 131
HOLE-IN-ROCK 9150 6.7 5.5 122 8.3 5.6 148
INDIAN CREEK 9425 25.9 21.6 120 23.4 20.5 114
KELLEY R.S. 8180 17.3 13.5 128 20.2 16.7 121
STEEL CREEK PARK 10200 14.0 12.2 115 16.6 12.5 133
----- -----
Basin wide percent of average 122 125
UPPER BEAR RIVER
BUG LAKE 7950 24.1 16.6 145 22.5 15.7 143
HAYDEN FORK 9212 19.1 12.7 150 24.3 16.6 146
KELLEY R.S. 8180 17.3 13.5 128 20.2 16.7 121
LILY LAKE 9156 16.0 10.5 152 17.8 13.9 128
MONTE CRISTO 8960 29.2 23.8 123 29.5 20.5 144
SALT RIVER SUMMIT 7760 14.3 11.8 121 18.3 15.4 119
TRIAL LAKE 9992 29.5 19.9 148 28.2 19.9 142
----- -----
Basin wide percent of average 137 135
-----------------------------------------------------------------------------
-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.