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: MARCH 15 , 2011
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 18.7 17.3 108 21.4 20.1 106
COTTONWOOD CREEK 7670 24.2 21.4 113 32.0 25.1 127
GRAND TARGHEE 9260 42.0 -M * -M -M *
GRANITE CREEK 6770 19.5 17.9 109 20.7 18.8 110
GRASSY LAKE 7265 34.6 32.8 105 36.5 33.6 109
GROS VENTRE SUMMIT 8750 13.6 12.9 105 13.0 11.8 110
GUNSIGHT PASS 9820 15.5 -M * 15.1 -M *
LEWIS LAKE DIVIDE 7850 34.3 32.8 105 -M 34.3 *
PHILLIPS BENCH 8200 27.6 26.5 104 28.2 26.9 105
SALT RIVER SUMMIT 7760 15.8 13.4 118 19.8 17.2 115
SNAKE RIVER STATION 6920 -M 18.3 * 23.6 20.9 113
SPRING CREEK DIVIDE 9000 31.1 24.4 127 29.7 24.4 122
THUMB DIVIDE 7980 18.8 17.4 108 18.1 17.5 103
TOGWOTEE PASS 9580 25.8 22.7 114 27.3 22.6 121
TWO OCEAN PLATEAU 9240 -M 25.6 * -M 25.6 *
WILLOW CREEK 8380 32.2 28.0 115 36.3 29.6 123
----- -----
Basin wide percent of average 111 114
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 22.7 21.9 104 21.8 18.6 117
BLACK BEAR 8170 40.2 36.4 110 38.4 36.9 104
CANYON 7870 15.1 12.7 119 16.1 14.2 113
FISHER CREEK 9100 36.3 32.3 112 35.0 33.5 104
MADISON PLATEAU 7750 25.2 23.2 109 27.1 24.3 112
NORTHEAST ENTRANCE 7350 12.3 10.6 116 13.7 11.7 117
PARKER PEAK 9400 25.6 19.9 129 22.3 14.9 150
SYLVAN LAKE 8420 21.2 20.6 103 24.6 19.4 127
THUMB DIVIDE 7980 18.8 17.4 108 18.1 17.5 103
TWO OCEAN PLATEAU 9240 -M 25.6 * -M 25.6 *
WHISKEY CREEK 6800 18.3 15.9 115 20.7 19.2 108
WHITE MILL 8700 24.7 22.3 111 25.1 24.9 101
WOLVERINE 7650 13.2 11.3 117 13.1 12.0 109
----- -----
Basin wide percent of average 112 112
WIND RIVER
BURROUGHS CREEK 8750 13.7 13.5 101 14.4 14.9 97
CASTLE CREEK 8400 6.4 -M * 7.2 -M *
COLD SPRINGS 9630 7.7 8.0 96 7.5 9.3 81
DEER PARK 9700 16.9 15.3 110 19.7 19.8 99
HOBBS PARK 10100 12.9 13.1 98 11.4 11.0 104
LITTLE WARM 9370 11.0 10.6 104 11.2 11.9 94
SOUTH PASS 9040 15.9 15.4 103 14.0 16.5 85
ST. LAWRENCE ALT 8620 4.4 6.6 67 6.3 7.7 82
TOGWOTEE PASS 9580 25.8 22.7 114 27.3 22.6 121
TOWNSEND CREEK 8700 7.8 7.6 103 9.9 9.9 100
----- -----
Basin wide percent of average 103 98
BIGHORN BASIN
BALD MTN. 9380 20.0 17.6 114 16.6 15.5 107
BEAR TRAP MEADOW 8200 7.1 4.9 145 7.3 7.1 103
BLACKWATER 9780 23.1 22.4 103 22.7 18.7 121
BONE SPRINGS DIV 9350 16.8 14.4 117 13.9 12.9 108
EVENING STAR 9200 28.3 27.3 104 31.1 23.5 132
GRAVE SPRINGS 8550 7.5 8.2 91 7.6 8.7 87
KIRWIN 9550 10.1 10.1 100 11.2 10.1 111
MARQUETTE 8760 2.4 -M * 5.6 8.3 67
MIDDLE POWDER 7760 8.4 10.1 83 10.2 10.7 95
OWL CREEK 8975 5.1 4.7 109 5.1 4.9 104
POWDER RIVER PASS 9480 12.3 9.7 127 14.3 11.0 130
SHELL CREEK 9580 14.6 13.0 112 13.2 11.8 112
SYLVAN LAKE 8420 21.2 20.6 103 24.6 19.4 127
SYLVAN ROAD 7120 14.1 12.2 116 18.2 16.5 110
TIMBER CREEK 7950 3.4 4.9 69 4.2 6.2 68
YOUNTS PEAK 8350 15.7 15.7 100 13.6 14.8 92
----- -----
Basin wide percent of average 106 110
SHOSHONE RIVER
BLACKWATER 9780 23.1 22.4 103 22.7 18.7 121
EVENING STAR 9200 28.3 27.3 104 31.1 23.5 132
KIRWIN 9550 10.1 10.1 100 11.2 10.1 111
MARQUETTE 8760 2.4 -M * 5.6 8.3 67
SYLVAN LAKE 8420 21.2 20.6 103 24.6 19.4 127
SYLVAN ROAD 7120 14.1 12.2 116 18.2 16.5 110
YOUNTS PEAK 8350 15.7 15.7 100 13.6 14.8 92
----- -----
Basin wide percent of average 104 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.1 4.9 145 7.3 7.1 103
BIG GOOSE 7990 6.9 8.7 79 8.6 7.4 116
BONE SPRINGS DIV 9350 16.8 14.4 117 13.9 12.9 108
BURGESS JUNCTION 7880 9.4 10.0 94 10.3 10.6 97
CLOUD PEAK RESERVOIR 9860 13.8 11.4 121 12.6 11.0 115
DOME LAKE 8880 11.1 10.5 106 11.2 11.3 99
GRAVE SPRINGS 8550 7.5 8.2 91 7.6 8.7 87
HANSEN SAWMILL 8360 6.1 5.8 105 6.8 7.1 96
LITTLE GOOSE 8870 7.7 -M * 11.9 -M *
MIDDLE POWDER 7760 8.4 10.1 83 10.2 10.7 95
POWDER RIVER PASS 9480 12.3 9.7 127 14.3 11.0 130
SOLDIER PARK 8720 6.4 -M * 7.7 -M *
SUCKER CREEK 8880 11.2 10.1 111 12.3 11.7 105
TIE CREEK 6870 5.9 5.8 102 8.6 8.6 100
----- -----
Basin wide percent of average 106 105
BELLE FOURCHE
BLIND PARK 6890 9.4 8.3 113 15.2 10.1 150
COLE CANYON 5910 7.5 6.3 119 10.8 6.0 180
NORTH RAPID CREEK 6130 8.6 7.5 115 13.0 8.0 163
----- -----
Basin wide percent of average 115 162
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 22.4 17.0 132 22.4 18.5 121
COLUMBINE 9160 31.1 23.8 131 31.9 22.9 139
DIVIDE PEAK 8880 20.8 17.7 118 24.7 18.8 131
ELK RIVER 8700 23.0 17.7 130 24.3 17.7 137
JOE WRIGHT 10120 26.6 19.0 140 31.2 22.2 141
NORTH FRENCH CREEK 10130 40.0 25.5 157 32.2 22.3 144
OLD BATTLE 10000 38.1 29.2 130 29.0 31.5 92
SAGE CREEK BASIN 7850 18.8 10.3 183 16.7 10.9 153
SOUTH BRUSH CREEK 8440 17.2 11.6 148 20.0 14.6 137
TOWER 10500 50.1 41.2 122 46.0 35.0 131
WEBBER SPRINGS 9250 27.8 24.3 114 32.8 24.2 136
WILLOW CREEK PASS 9540 16.9 10.6 159 15.7 11.4 138
----- -----
Basin wide percent of average 134 131
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 28.5 21.0 136 28.5 19.5 146
CASPER MTN. 7900 10.3 12.5 82 12.8 12.4 103
DEADMAN HILL 10220 19.2 14.4 133 19.8 14.9 133
DEER PARK 9700 16.9 15.3 110 19.7 19.8 99
LAPRELE CREEK 8375 11.7 10.0 117 12.9 11.1 116
RENO HILL 8400 13.0 12.0 108 15.2 12.9 118
ROACH 9700 18.6 15.3 122 21.9 16.7 131
SAND LAKE 10050 33.5 28.7 117 32.0 21.4 150
SOUTH PASS 9040 15.9 15.4 103 14.0 16.5 85
WINDY PEAK 7900 9.8 7.2 136 12.1 9.3 130
----- -----
Basin wide percent of average 117 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.2 * 12.3 13.9 88
DIVIDE PEAK 8880 20.8 17.7 118 24.7 18.8 131
OLD BATTLE 10000 38.1 29.2 130 29.0 31.5 92
SANDSTONE RS 8150 14.4 14.2 101 23.2 17.2 135
WHISKEY PARK 8950 -M 27.3 * 36.1 25.9 139
----- -----
Basin wide percent of average 120 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.5 13.3 102 13.7 12.3 111
BLIND BULL SUM 8650 27.3 25.7 106 19.8 20.6 96
EAST RIM DIVIDE 7930 14.1 12.1 117 12.1 11.2 108
ELKHART PARK G.S. 9400 12.1 12.3 98 11.9 12.1 98
GROS VENTRE SUMMIT 8750 13.6 12.9 105 13.0 11.8 110
GUNSIGHT PASS 9820 15.5 -M * 15.1 -M *
KENDALL R.S. 7740 12.5 13.9 90 14.0 13.6 103
LOOMIS PARK 8240 18.7 16.2 115 18.9 16.1 117
NEW FORK LAKE 8340 11.8 10.5 112 10.8 10.4 104
POCKET CREEK 9360 10.6 -M * 13.0 -M *
SNIDER BASIN 8060 18.8 13.6 138 17.8 14.9 119
SPRING CREEK DIVIDE 9000 31.1 24.4 127 29.7 24.4 122
TRIPLE PEAK 8500 27.9 23.1 121 29.8 22.8 131
----- -----
Basin wide percent of average 113 113
LOWER GREEN RIVER
HAMS FORK 7840 15.9 12.2 130 14.3 11.3 127
HEWINTA 9519 12.2 10.4 117 15.6 12.9 121
HICKERSON PARK 9145 7.7 6.5 118 9.1 6.9 132
HOLE-IN-ROCK 9150 7.9 6.4 123 9.7 6.5 149
INDIAN CREEK 9425 28.4 25.1 113 25.3 23.1 110
KELLEY R.S. 8180 19.0 15.6 122 22.0 18.6 118
STEEL CREEK PARK 10200 15.7 14.2 111 18.3 14.3 128
----- -----
Basin wide percent of average 118 122
UPPER BEAR RIVER
BUG LAKE 7950 26.6 19.1 139 26.3 17.7 149
HAYDEN FORK 9212 21.2 14.9 142 26.5 18.9 140
KELLEY R.S. 8180 19.0 15.6 122 22.0 18.6 118
LILY LAKE 9156 19.1 11.9 161 20.1 15.7 128
MONTE CRISTO 8960 33.3 27.6 121 33.0 23.2 142
SALT RIVER SUMMIT 7760 15.8 13.4 118 19.8 17.2 115
TRIAL LAKE 9992 32.1 23.0 140 31.1 22.7 137
----- -----
Basin wide percent of average 133 133
-----------------------------------------------------------------------------
-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.