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: MARCH 19 , 2011
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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 20.0 17.6 114 22.9 20.5 112
COTTONWOOD CREEK 7670 26.2 22.3 117 33.1 25.8 128
GRAND TARGHEE 9260 43.5 -M * -M -M *
GRANITE CREEK 6770 20.4 18.3 111 21.5 19.2 112
GRASSY LAKE 7265 37.0 33.7 110 38.4 34.3 112
GROS VENTRE SUMMIT 8750 14.1 13.3 106 13.6 12.1 112
GUNSIGHT PASS 9820 16.0 -M * 15.6 -M *
LEWIS LAKE DIVIDE 7850 37.7 33.6 112 -M 35.0 *
PHILLIPS BENCH 8200 29.2 27.2 107 29.4 27.5 107
SALT RIVER SUMMIT 7760 16.6 13.7 121 20.6 17.6 117
SNAKE RIVER STATION 6920 -M 18.6 * 24.9 21.3 117
SPRING CREEK DIVIDE 9000 32.6 25.0 130 30.6 25.0 122
THUMB DIVIDE 7980 20.8 18.0 116 19.1 17.9 107
TOGWOTEE PASS 9580 26.7 23.3 115 28.3 23.1 123
TWO OCEAN PLATEAU 9240 -M 26.2 * -M 26.2 *
WILLOW CREEK 8380 33.8 28.7 118 37.7 30.3 124
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Basin wide percent of average 115 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 24.5 22.3 110 23.3 19.0 123
BLACK BEAR 8170 44.1 37.3 118 41.1 38.0 108
CANYON 7870 16.3 13.1 124 17.3 14.6 118
FISHER CREEK 9100 38.8 33.1 117 37.3 34.3 109
MADISON PLATEAU 7750 28.1 23.7 119 29.2 25.0 117
NORTHEAST ENTRANCE 7350 13.2 10.8 122 14.2 12.0 118
PARKER PEAK 9400 27.1 20.3 133 -M 15.3 *
SYLVAN LAKE 8420 22.5 21.1 107 25.9 19.8 131
THUMB DIVIDE 7980 20.8 18.0 116 19.1 17.9 107
TWO OCEAN PLATEAU 9240 -M 26.2 * -M 26.2 *
WHISKEY CREEK 6800 19.9 16.3 122 22.5 19.7 114
WHITE MILL 8700 26.3 22.9 115 26.5 25.5 104
WOLVERINE 7650 14.2 11.4 125 13.8 12.2 113
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Basin wide percent of average 118 114
WIND RIVER
BURROUGHS CREEK 8750 14.2 13.9 102 14.8 15.3 97
CASTLE CREEK 8400 6.5 -M * 7.2 -M *
COLD SPRINGS 9630 7.8 8.3 94 7.7 9.6 80
DEER PARK 9700 17.3 15.7 110 20.3 20.3 100
HOBBS PARK 10100 13.6 13.5 101 11.9 11.4 104
LITTLE WARM 9370 11.8 10.9 108 12.0 12.3 98
SOUTH PASS 9040 16.3 15.9 103 14.0 17.0 82
ST. LAWRENCE ALT 8620 4.6 6.7 69 6.5 8.0 81
TOGWOTEE PASS 9580 26.7 23.3 115 28.3 23.1 123
TOWNSEND CREEK 8700 8.0 8.0 100 10.2 10.3 99
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Basin wide percent of average 104 99
BIGHORN BASIN
BALD MTN. 9380 20.6 18.1 114 17.0 16.0 106
BEAR TRAP MEADOW 8200 7.1 5.1 139 7.2 7.3 99
BLACKWATER 9780 24.5 23.0 107 23.9 19.2 124
BONE SPRINGS DIV 9350 17.7 14.9 119 14.6 13.3 110
EVENING STAR 9200 29.9 27.9 107 32.1 23.9 134
GRAVE SPRINGS 8550 7.8 8.5 92 7.9 8.9 89
KIRWIN 9550 10.6 10.4 102 11.6 10.3 113
MARQUETTE 8760 2.5 -M * 5.7 8.6 66
MIDDLE POWDER 7760 8.6 10.6 81 10.4 11.1 94
OWL CREEK 8975 5.2 5.0 104 5.1 5.1 100
POWDER RIVER PASS 9480 12.7 10.0 127 14.9 11.3 132
SHELL CREEK 9580 15.4 13.4 115 13.9 12.1 115
SYLVAN LAKE 8420 22.5 21.1 107 25.9 19.8 131
SYLVAN ROAD 7120 15.1 12.3 123 19.2 16.9 114
TIMBER CREEK 7950 3.6 5.2 69 4.4 6.4 69
YOUNTS PEAK 8350 16.6 16.2 102 14.2 15.2 93
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Basin wide percent of average 108 111
SHOSHONE RIVER
BLACKWATER 9780 24.5 23.0 107 23.9 19.2 124
EVENING STAR 9200 29.9 27.9 107 32.1 23.9 134
KIRWIN 9550 10.6 10.4 102 11.6 10.3 113
MARQUETTE 8760 2.5 -M * 5.7 8.6 66
SYLVAN LAKE 8420 22.5 21.1 107 25.9 19.8 131
SYLVAN ROAD 7120 15.1 12.3 123 19.2 16.9 114
YOUNTS PEAK 8350 16.6 16.2 102 14.2 15.2 93
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Basin wide percent of average 107 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.1 5.1 139 7.2 7.3 99
BIG GOOSE 7990 7.3 9.1 80 8.9 7.6 117
BONE SPRINGS DIV 9350 17.7 14.9 119 14.6 13.3 110
BURGESS JUNCTION 7880 9.6 10.4 92 10.5 10.9 96
CLOUD PEAK RESERVOIR 9860 14.4 11.9 121 13.0 11.4 114
DOME LAKE 8880 11.8 11.1 106 11.9 11.7 102
GRAVE SPRINGS 8550 7.8 8.5 92 7.9 8.9 89
HANSEN SAWMILL 8360 6.3 6.0 105 7.0 7.3 96
LITTLE GOOSE 8870 8.1 -M * 12.3 -M *
MIDDLE POWDER 7760 8.6 10.6 81 10.4 11.1 94
POWDER RIVER PASS 9480 12.7 10.0 127 14.9 11.3 132
SOLDIER PARK 8720 7.1 -M * 8.0 -M *
SUCKER CREEK 8880 11.6 10.5 110 12.8 12.1 106
TIE CREEK 6870 6.1 6.1 100 8.9 8.9 100
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Basin wide percent of average 106 105
BELLE FOURCHE
BLIND PARK 6890 9.2 8.5 108 15.3 10.3 149
COLE CANYON 5910 7.6 6.4 119 10.9 6.1 179
NORTH RAPID CREEK 6130 8.4 7.7 109 13.0 8.1 160
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Basin wide percent of average 112 160
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 23.2 17.3 134 23.2 18.8 123
COLUMBINE 9160 31.7 24.2 131 32.4 23.5 138
DIVIDE PEAK 8880 21.8 18.3 119 25.4 19.3 132
ELK RIVER 8700 24.1 18.2 132 25.1 18.2 138
JOE WRIGHT 10120 29.0 19.6 148 32.9 22.9 144
NORTH FRENCH CREEK 10130 41.1 26.4 156 32.3 22.9 141
OLD BATTLE 10000 39.5 30.0 132 29.1 32.3 90
SAGE CREEK BASIN 7850 19.4 10.6 183 17.2 11.2 154
SOUTH BRUSH CREEK 8440 17.9 12.1 148 20.6 15.0 137
TOWER 10500 51.8 42.3 122 46.1 35.9 128
WEBBER SPRINGS 9250 28.7 25.0 115 33.4 24.9 134
WILLOW CREEK PASS 9540 18.3 10.9 168 16.9 11.8 143
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Basin wide percent of average 136 130
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 29.1 21.7 134 28.8 20.1 143
CASPER MTN. 7900 10.7 12.9 83 13.1 12.8 102
DEADMAN HILL 10220 20.3 14.8 137 20.8 15.4 135
DEER PARK 9700 17.3 15.7 110 20.3 20.3 100
LAPRELE CREEK 8375 11.7 10.3 114 13.0 11.5 113
RENO HILL 8400 13.3 12.5 106 15.4 13.3 116
ROACH 9700 19.4 15.7 124 22.6 17.2 131
SAND LAKE 10050 34.3 29.7 115 32.7 22.1 148
SOUTH PASS 9040 16.3 15.9 103 14.0 17.0 82
WINDY PEAK 7900 9.9 7.4 134 12.3 9.6 128
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Basin wide percent of average 116 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.5 * 13.0 14.4 90
DIVIDE PEAK 8880 21.8 18.3 119 25.4 19.3 132
OLD BATTLE 10000 39.5 30.0 132 29.1 32.3 90
SANDSTONE RS 8150 15.1 14.6 103 23.8 17.6 135
WHISKEY PARK 8950 -M 28.2 * 36.9 26.6 139
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Basin wide percent of average 121 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.9 13.6 102 14.0 12.6 111
BLIND BULL SUM 8650 29.1 26.4 110 20.5 21.0 98
EAST RIM DIVIDE 7930 14.7 12.4 119 12.4 11.4 109
ELKHART PARK G.S. 9400 12.4 12.6 98 12.2 12.4 98
GROS VENTRE SUMMIT 8750 14.1 13.3 106 13.6 12.1 112
GUNSIGHT PASS 9820 16.0 -M * 15.6 -M *
KENDALL R.S. 7740 12.9 14.2 91 14.4 13.9 104
LOOMIS PARK 8240 19.2 16.6 116 19.3 16.5 117
NEW FORK LAKE 8340 12.0 10.7 112 11.0 10.7 103
POCKET CREEK 9360 11.0 -M * 13.2 -M *
SNIDER BASIN 8060 19.5 13.9 140 18.3 15.2 120
SPRING CREEK DIVIDE 9000 32.6 25.0 130 30.6 25.0 122
TRIPLE PEAK 8500 29.6 23.6 125 30.9 23.3 133
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Basin wide percent of average 115 113
LOWER GREEN RIVER
HAMS FORK 7840 16.6 12.4 134 14.9 11.5 130
HEWINTA 9519 12.6 10.8 117 16.4 13.4 122
HICKERSON PARK 9145 8.2 6.7 122 9.6 7.2 133
HOLE-IN-ROCK 9150 8.0 6.5 123 9.9 6.7 148
INDIAN CREEK 9425 29.7 25.9 115 26.1 23.7 110
KELLEY R.S. 8180 19.7 16.0 123 22.6 19.1 118
STEEL CREEK PARK 10200 13.6 14.6 93 18.9 14.7 129
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Basin wide percent of average 117 123
UPPER BEAR RIVER
BUG LAKE 7950 27.6 19.7 140 27.3 18.1 151
HAYDEN FORK 9212 22.0 15.3 144 27.5 19.4 142
KELLEY R.S. 8180 19.7 16.0 123 22.6 19.1 118
LILY LAKE 9156 19.9 12.2 163 20.7 16.1 129
MONTE CRISTO 8960 34.9 28.3 123 34.2 23.8 144
SALT RIVER SUMMIT 7760 16.6 13.7 121 20.6 17.6 117
TRIAL LAKE 9992 33.4 23.6 142 31.9 23.3 137
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Basin wide percent of average 135 134
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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.