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 28 , 2012
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 17.9 15.8 113 21.1 18.3 115
COTTONWOOD CREEK 7670 16.9 18.1 93 21.8 22.7 96
EAST RIM DIVIDE 7930 10.0 10.9 92 10.4 10.1 103
GRAND TARGHEE 9260 29.4 -M * 24.0 -M *
GRANITE CREEK 6770 14.5 15.8 92 14.9 17.2 87
GRASSY LAKE 7265 27.0 29.1 93 30.6 30.6 100
GROS VENTRE SUMMIT 8750 8.3 11.3 73 8.8 10.6 83
GUNSIGHT PASS 9820 10.3 -M * 11.2 -M *
LEWIS LAKE DIVIDE 7850 25.4 29.2 87 28.9 31.1 93
PHILLIPS BENCH 8200 20.0 23.6 85 21.6 24.3 89
SALT RIVER SUMMIT 7760 9.6 12.0 80 10.5 15.6 67
SNAKE RIVER STATION 6920 16.4 16.3 101 21.3 19.2 111
SPRING CREEK DIVIDE 9000 20.1 21.8 92 20.1 22.2 91
THUMB DIVIDE 7980 12.6 15.1 83 13.7 15.8 87
TOGWOTEE PASS 9580 18.2 20.5 89 20.0 20.4 98
TWO OCEAN PLATEAU 9240 27.8 23.0 121 21.8 23.1 94
WILLOW CREEK 8380 22.0 25.0 88 27.0 26.6 102
----- -----
Basin wide percent of average 93 95
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.3 19.6 104 19.9 16.9 118
BLACK BEAR 8170 28.0 32.6 86 28.7 32.8 88
CANYON 7870 10.2 11.3 90 11.7 12.8 91
FISHER CREEK 9100 27.8 29.3 95 27.1 30.2 90
MADISON PLATEAU 7750 17.2 20.6 83 20.9 21.8 96
NORTHEAST ENTRANCE 7350 9.0 9.7 93 10.6 10.7 99
PARKER PEAK 9400 18.7 18.1 103 18.5 13.5 137
SYLVAN LAKE 8420 15.2 18.7 81 20.1 17.7 114
THUMB DIVIDE 7980 12.6 15.1 83 13.7 15.8 87
TWO OCEAN PLATEAU 9240 27.8 23.0 121 21.8 23.1 94
WHISKEY CREEK 6800 12.0 14.2 85 15.2 17.1 89
WHITE MILL 8700 18.2 20.0 91 19.1 22.4 85
WOLVERINE 7650 11.9 10.6 112 11.1 11.1 100
----- -----
Basin wide percent of average 94 97
WIND RIVER
BURROUGHS CREEK 8750 12.6 12.6 100 12.8 13.5 95
CASTLE CREEK 8400 6.8 -M * 7.6 -M *
COLD SPRINGS 9630 7.1 7.2 99 8.1 8.3 98
DEER PARK 9700 10.0 14.5 69 15.1 17.6 86
HOBBS PARK 10100 12.6 11.9 106 11.6 9.8 118
LITTLE WARM 9370 6.9 9.5 73 9.0 10.8 83
SOUTH PASS 9040 12.3 14.0 88 11.9 14.8 80
ST. LAWRENCE ALT 8620 4.4 5.9 75 6.6 6.9 96
TOGWOTEE PASS 9580 18.2 20.5 89 20.0 20.4 98
TOWNSEND CREEK 8700 7.7 6.9 112 10.1 8.8 115
----- -----
Basin wide percent of average 89 95
BIGHORN BASIN
BALD MTN. 9380 18.1 15.9 114 13.1 13.9 94
BEAR TRAP MEADOW 8200 7.1 4.3 165 7.2 6.3 114
BLACKWATER 9780 21.0 20.3 103 20.6 17.0 121
BONE SPRINGS DIV 9350 17.7 13.1 135 13.6 11.5 118
EVENING STAR 9200 24.1 24.8 97 26.1 21.5 121
GRAVE SPRINGS 8550 7.2 7.2 100 8.6 7.7 112
KIRWIN 9550 10.6 9.1 116 12.4 9.1 136
MARQUETTE 8760 8.3 -M * 10.9 7.4 147
MIDDLE POWDER 7760 9.1 8.9 102 9.1 9.5 96
OWL CREEK 8975 3.9 4.1 95 4.7 4.4 107
POWDER RIVER PASS 9480 10.8 8.7 124 12.7 9.9 128
SHELL CREEK 9580 15.9 11.7 136 13.9 10.7 130
SYLVAN LAKE 8420 15.2 18.7 81 20.1 17.7 114
SYLVAN ROAD 7120 11.7 11.3 104 15.4 15.5 99
TIMBER CREEK 7950 4.4 4.2 105 7.9 5.3 149
YOUNTS PEAK 8350 14.5 14.6 99 13.8 13.4 103
----- -----
Basin wide percent of average 108 116
SHOSHONE RIVER
BLACKWATER 9780 21.0 20.3 103 20.6 17.0 121
EVENING STAR 9200 24.1 24.8 97 26.1 21.5 121
KIRWIN 9550 10.6 9.1 116 12.4 9.1 136
MARQUETTE 8760 8.3 -M * 10.9 7.4 147
SYLVAN LAKE 8420 15.2 18.7 81 20.1 17.7 114
SYLVAN ROAD 7120 11.7 11.3 104 15.4 15.5 99
YOUNTS PEAK 8350 14.5 14.6 99 13.8 13.4 103
----- -----
Basin wide percent of average 98 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.1 4.3 165 7.2 6.3 114
BIG GOOSE 7990 8.8 7.6 116 12.4 6.7 185
BONE SPRINGS DIV 9350 17.7 13.1 135 13.6 11.5 118
BURGESS JUNCTION 7880 11.2 9.0 124 13.1 9.4 139
CLOUD PEAK RESERVOIR 9860 14.5 9.9 146 13.1 9.7 135
DOME LAKE 8880 12.8 9.5 135 13.3 10.1 132
GRAVE SPRINGS 8550 7.2 7.2 100 8.6 7.7 112
HANSEN SAWMILL 8360 5.3 5.1 104 7.2 6.2 116
LITTLE GOOSE 8870 9.9 -M * 14.4 -M *
MIDDLE POWDER 7760 9.1 8.9 102 9.1 9.5 96
POWDER RIVER PASS 9480 10.8 8.7 124 12.7 9.9 128
SOLDIER PARK 8720 11.9 -M * 8.7 -M *
SUCKER CREEK 8880 13.2 9.1 145 13.6 10.4 131
TIE CREEK 6870 6.7 4.9 137 12.7 7.8 163
----- -----
Basin wide percent of average 128 130
BELLE FOURCHE
BLIND PARK 6890 8.1 7.0 116 9.2 9.2 100
COLE CANYON 5910 6.2 5.6 111 7.5 5.4 139
NORTH RAPID CREEK 6130 7.4 6.7 110 7.1 7.4 96
----- -----
Basin wide percent of average 112 108
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 19.5 -M * 20.8 -M *
CINNABAR PARK 9574 14.9 15.8 94 18.5 17.1 108
COLUMBINE 9160 16.5 21.6 76 17.1 20.6 83
DIVIDE PEAK 8880 12.8 15.4 83 16.7 16.8 99
ELK RIVER 8700 12.8 15.9 81 13.0 15.9 82
JOE WRIGHT 10120 12.2 17.0 72 17.0 19.9 85
NORTH FRENCH CREEK 10130 18.0 22.3 81 17.9 19.9 90
OLD BATTLE 10000 20.0 25.8 78 23.1 28.0 82
SAGE CREEK BASIN 7850 13.1 8.9 147 9.2 9.7 95
SOUTH BRUSH CREEK 8440 7.6 9.8 78 10.5 13.1 80
TOWER 10500 25.6 37.1 69 26.6 31.5 84
WEBBER SPRINGS 9250 15.2 20.9 73 18.8 21.8 86
WILLOW CREEK PASS 9540 -M 9.5 * 8.1 10.2 79
----- -----
Basin wide percent of average 80 88
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.1 18.7 86 17.4 17.2 101
CASPER MTN. 7900 17.5 11.1 158 16.9 10.9 155
DEADMAN HILL 10220 15.3 12.8 120 14.3 13.1 109
DEER PARK 9700 10.0 14.5 69 15.1 17.6 86
LAPRELE CREEK 8375 8.7 8.8 99 11.3 9.9 114
RENO HILL 8400 14.8 10.2 145 16.4 11.3 145
ROACH 9700 12.0 13.7 88 14.9 14.6 102
SAND LAKE 10050 21.3 24.8 86 20.9 19.0 110
SOUTH PASS 9040 12.3 14.0 88 11.9 14.8 80
WINDY PEAK 7900 6.8 5.9 115 8.6 8.4 102
----- -----
Basin wide percent of average 100 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.1 9.5 106 10.3 12.2 84
DIVIDE PEAK 8880 12.8 15.4 83 16.7 16.8 99
OLD BATTLE 10000 20.0 25.8 78 23.1 28.0 82
SANDSTONE RS 8150 9.8 12.3 80 10.8 15.4 70
WHISKEY PARK 8950 18.1 23.4 77 21.3 23.1 92
----- -----
Basin wide percent of average 82 86
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.6 11.9 97 11.6 11.2 104
BLIND BULL SUM 8650 19.7 22.7 87 15.5 18.8 82
EAST RIM DIVIDE 7930 10.0 10.9 92 10.4 10.1 103
ELKHART PARK G.S. 9400 11.3 10.9 104 12.3 10.8 114
GROS VENTRE SUMMIT 8750 8.3 11.3 73 8.8 10.6 83
GUNSIGHT PASS 9820 10.3 -M * 11.2 -M *
KENDALL R.S. 7740 13.3 12.2 109 14.0 12.3 114
LOOMIS PARK 8240 12.5 14.2 88 14.6 14.6 100
NEW FORK LAKE 8340 10.2 9.5 107 9.5 9.5 100
POCKET CREEK 9360 8.9 -M * 10.8 -M *
SNIDER BASIN 8060 11.5 12.3 93 11.6 13.6 85
SPRING CREEK DIVIDE 9000 20.1 21.8 92 20.1 22.2 91
TRIPLE PEAK 8500 20.1 20.5 98 22.7 20.4 111
----- -----
Basin wide percent of average 94 98
LOWER GREEN RIVER
HAMS FORK 7840 9.1 10.8 84 8.3 10.2 81
HEWINTA 9519 7.4 8.9 83 10.5 11.4 92
HICKERSON PARK 9145 8.0 5.8 138 10.8 6.1 177
HOLE-IN-ROCK 9150 7.1 5.6 127 10.3 5.7 181
INDIAN CREEK 9425 17.2 21.9 79 15.5 20.8 75
KELLEY R.S. 8180 11.5 13.8 83 13.5 17.0 79
STEEL CREEK PARK 10200 4.8 12.4 39 11.7 12.7 92
----- -----
Basin wide percent of average 82 96
UPPER BEAR RIVER
BUG LAKE 7950 12.0 16.8 71 13.3 15.9 84
HAYDEN FORK 9212 9.5 12.9 74 14.4 16.8 86
KELLEY R.S. 8180 11.5 13.8 83 13.5 17.0 79
LILY LAKE 9156 8.1 10.6 76 9.8 14.1 70
MONTE CRISTO 8960 15.5 24.3 64 15.7 20.8 75
SALT RIVER SUMMIT 7760 9.6 12.0 80 10.5 15.6 67
TRIAL LAKE 9992 11.3 20.3 56 11.4 20.2 56
----- -----
Basin wide percent of average 70 74
-----------------------------------------------------------------------------
-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.