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 29 , 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 21.6 18.1 119 23.6 21.4 110
COTTONWOOD CREEK 7670 27.8 23.9 116 34.9 27.3 128
GRAND TARGHEE 9260 46.8 -M * -M -M *
GRANITE CREEK 6770 22.1 18.7 118 23.2 19.9 117
GRASSY LAKE 7265 39.3 35.7 110 39.8 35.9 111
GROS VENTRE SUMMIT 8750 14.7 14.2 104 14.1 12.8 110
GUNSIGHT PASS 9820 17.6 -M * 16.8 -M *
LEWIS LAKE DIVIDE 7850 40.3 35.4 114 -M 36.7 *
PHILLIPS BENCH 8200 32.4 28.8 113 32.1 29.0 111
SALT RIVER SUMMIT 7760 17.9 14.4 124 21.9 18.7 117
SNAKE RIVER STATION 6920 -M 19.2 * 25.9 22.2 117
SPRING CREEK DIVIDE 9000 34.7 26.5 131 31.9 26.3 121
THUMB DIVIDE 7980 22.2 19.0 117 -M 18.8 *
TOGWOTEE PASS 9580 28.4 24.8 115 29.9 24.5 122
TWO OCEAN PLATEAU 9240 -M 27.9 * -M 27.6 *
WILLOW CREEK 8380 36.4 30.2 121 39.7 32.0 124
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Basin wide percent of average 117 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 25.8 23.3 111 24.9 20.0 125
BLACK BEAR 8170 47.5 39.2 121 43.6 40.3 108
CANYON 7870 17.3 13.7 126 18.4 15.4 119
FISHER CREEK 9100 41.0 34.9 117 39.6 36.2 109
MADISON PLATEAU 7750 30.0 25.1 120 31.6 26.6 119
NORTHEAST ENTRANCE 7350 14.2 11.3 126 15.2 12.6 121
PARKER PEAK 9400 28.6 21.6 132 24.7 16.1 153
SYLVAN LAKE 8420 24.5 22.5 109 28.1 20.8 135
THUMB DIVIDE 7980 22.2 19.0 117 -M 18.8 *
TWO OCEAN PLATEAU 9240 -M 27.9 * -M 27.6 *
WHISKEY CREEK 6800 20.8 17.2 121 23.7 20.9 113
WHITE MILL 8700 28.1 24.2 116 28.2 26.9 105
WOLVERINE 7650 14.6 11.5 127 14.5 12.7 114
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Basin wide percent of average 119 118
WIND RIVER
BURROUGHS CREEK 8750 14.8 14.6 101 15.6 16.1 97
CASTLE CREEK 8400 7.0 -M * 7.9 -M *
COLD SPRINGS 9630 8.6 8.8 98 8.2 10.4 79
DEER PARK 9700 18.9 16.8 113 22.0 21.6 102
HOBBS PARK 10100 14.5 14.7 99 12.6 12.5 101
LITTLE WARM 9370 12.4 11.8 105 12.5 13.2 95
SOUTH PASS 9040 17.4 16.6 105 14.9 18.2 82
ST. LAWRENCE ALT 8620 4.8 7.2 67 6.9 8.7 79
TOGWOTEE PASS 9580 28.4 24.8 115 29.9 24.5 122
TOWNSEND CREEK 8700 8.8 8.6 102 10.8 11.4 95
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Basin wide percent of average 104 98
BIGHORN BASIN
BALD MTN. 9380 21.8 19.5 112 18.0 17.1 105
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98
BLACKWATER 9780 25.7 24.4 105 24.9 20.4 122
BONE SPRINGS DIV 9350 18.8 16.0 118 15.5 14.4 108
EVENING STAR 9200 31.0 29.7 104 32.9 25.1 131
GRAVE SPRINGS 8550 9.0 9.2 98 9.0 9.5 95
KIRWIN 9550 11.5 11.2 103 12.6 11.1 114
MARQUETTE 8760 2.9 -M * 6.0 9.5 63
MIDDLE POWDER 7760 10.3 11.5 90 11.1 12.1 92
OWL CREEK 8975 5.7 5.5 104 5.7 5.7 100
POWDER RIVER PASS 9480 13.5 10.7 126 15.6 12.1 129
SHELL CREEK 9580 16.4 14.5 113 15.0 13.1 115
SYLVAN LAKE 8420 24.5 22.5 109 28.1 20.8 135
SYLVAN ROAD 7120 16.0 12.9 124 20.4 17.6 116
TIMBER CREEK 7950 4.1 5.7 72 5.0 7.2 69
YOUNTS PEAK 8350 17.3 17.1 101 15.0 16.0 94
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Basin wide percent of average 108 110
SHOSHONE RIVER
BLACKWATER 9780 25.7 24.4 105 24.9 20.4 122
EVENING STAR 9200 31.0 29.7 104 32.9 25.1 131
KIRWIN 9550 11.5 11.2 103 12.6 11.1 114
MARQUETTE 8760 2.9 -M * 6.0 9.5 63
SYLVAN LAKE 8420 24.5 22.5 109 28.1 20.8 135
SYLVAN ROAD 7120 16.0 12.9 124 20.4 17.6 116
YOUNTS PEAK 8350 17.3 17.1 101 15.0 16.0 94
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Basin wide percent of average 107 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98
BIG GOOSE 7990 8.3 10.3 81 9.9 8.3 119
BONE SPRINGS DIV 9350 18.8 16.0 118 15.5 14.4 108
BURGESS JUNCTION 7880 10.5 11.5 91 11.4 11.9 96
CLOUD PEAK RESERVOIR 9860 15.4 13.0 118 14.0 12.5 112
DOME LAKE 8880 13.3 12.1 110 13.1 12.8 102
GRAVE SPRINGS 8550 9.0 9.2 98 9.0 9.5 95
HANSEN SAWMILL 8360 6.8 6.3 108 7.6 8.0 95
LITTLE GOOSE 8870 9.5 -M * 13.7 -M *
MIDDLE POWDER 7760 10.3 11.5 90 11.1 12.1 92
POWDER RIVER PASS 9480 13.5 10.7 126 15.6 12.1 129
SOLDIER PARK 8720 7.9 -M * 9.0 -M *
SUCKER CREEK 8880 12.9 11.6 111 14.3 13.3 108
TIE CREEK 6870 6.6 5.7 116 10.0 9.7 103
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Basin wide percent of average 108 105
BELLE FOURCHE
BLIND PARK 6890 9.3 8.6 108 16.1 10.9 148
COLE CANYON 5910 7.9 6.7 118 11.7 6.6 177
NORTH RAPID CREEK 6130 8.3 8.1 102 13.6 8.5 160
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Basin wide percent of average 109 159
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 24.5 17.8 138 30.3 19.8 153
COLUMBINE 9160 33.6 24.9 135 34.0 24.9 137
DIVIDE PEAK 8880 24.3 19.7 123 27.6 20.5 135
ELK RIVER 8700 25.7 19.3 133 26.6 19.3 138
JOE WRIGHT 10120 31.6 21.0 150 34.1 24.4 140
NORTH FRENCH CREEK 10130 44.0 28.8 153 -M 24.3 *
OLD BATTLE 10000 42.3 31.9 133 29.3 34.2 86
SAGE CREEK BASIN 7850 21.3 11.4 187 18.9 11.9 159
SOUTH BRUSH CREEK 8440 18.8 13.0 145 22.0 16.1 137
TOWER 10500 54.2 45.0 120 46.2 38.0 122
WEBBER SPRINGS 9250 31.3 26.2 119 36.1 26.4 137
WILLOW CREEK PASS 9540 19.5 11.8 165 17.8 12.6 141
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Basin wide percent of average 137 130
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 31.1 23.4 133 30.2 21.7 139
CASPER MTN. 7900 11.0 14.2 77 13.8 14.0 99
DEADMAN HILL 10220 21.5 16.1 134 21.8 16.6 131
DEER PARK 9700 18.9 16.8 113 22.0 21.6 102
LAPRELE CREEK 8375 13.1 10.9 120 14.0 12.4 113
RENO HILL 8400 14.3 13.9 103 16.7 14.6 114
ROACH 9700 20.3 16.8 121 23.5 18.3 128
SAND LAKE 10050 36.5 32.1 114 34.4 23.7 145
SOUTH PASS 9040 17.4 16.6 105 14.9 18.2 82
WINDY PEAK 7900 10.7 8.0 134 13.0 10.3 126
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Basin wide percent of average 115 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.3 * 14.5 15.6 93
DIVIDE PEAK 8880 24.3 19.7 123 27.6 20.5 135
OLD BATTLE 10000 42.3 31.9 133 29.3 34.2 86
SANDSTONE RS 8150 17.9 14.9 120 25.8 18.6 139
WHISKEY PARK 8950 -M 30.1 * 40.5 28.4 143
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Basin wide percent of average 127 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.4 14.4 107 15.4 13.3 116
BLIND BULL SUM 8650 31.1 28.0 111 21.9 22.2 99
EAST RIM DIVIDE 7930 15.7 13.1 120 13.1 12.0 109
ELKHART PARK G.S. 9400 13.7 13.4 102 13.5 13.2 102
GROS VENTRE SUMMIT 8750 14.7 14.2 104 14.1 12.8 110
GUNSIGHT PASS 9820 17.6 -M * 16.8 -M *
KENDALL R.S. 7740 14.1 14.6 97 15.5 14.5 107
LOOMIS PARK 8240 20.7 17.4 119 20.5 17.3 118
NEW FORK LAKE 8340 13.0 11.2 116 11.7 11.3 104
POCKET CREEK 9360 12.6 -M * 14.5 -M *
SNIDER BASIN 8060 21.0 14.6 144 19.4 16.1 120
SPRING CREEK DIVIDE 9000 34.7 26.5 131 31.9 26.3 121
TRIPLE PEAK 8500 31.8 24.9 128 32.7 24.7 132
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Basin wide percent of average 117 114
LOWER GREEN RIVER
HAMS FORK 7840 17.2 12.2 141 15.4 12.2 126
HEWINTA 9519 13.4 11.8 114 17.1 14.4 119
HICKERSON PARK 9145 8.8 7.4 119 10.0 7.8 128
HOLE-IN-ROCK 9150 8.5 7.0 121 10.6 7.3 145
INDIAN CREEK 9425 31.8 27.8 114 27.6 25.3 109
KELLEY R.S. 8180 21.2 16.9 125 24.1 20.2 119
STEEL CREEK PARK 10200 17.1 15.6 110 19.7 15.9 124
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Basin wide percent of average 120 121
UPPER BEAR RIVER
BUG LAKE 7950 -M 20.9 * -M 19.1 *
HAYDEN FORK 9212 23.8 16.3 146 28.9 20.8 139
KELLEY R.S. 8180 21.2 16.9 125 24.1 20.2 119
LILY LAKE 9156 21.3 13.0 164 21.7 17.3 125
MONTE CRISTO 8960 38.7 29.8 130 36.5 25.3 144
SALT RIVER SUMMIT 7760 17.9 14.4 124 21.9 18.7 117
TRIAL LAKE 9992 35.6 25.0 142 32.8 24.8 132
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Basin wide percent of average 137 131
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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.