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 2 , 1999
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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 23.7 15.8 150 24.3 20.2 120
COTTONWOOD CREEK 7600 22.4 18.7 120 25.0 22.4 112
GRANITE CREEK 6770 19.9 15.5 128 21.4 21.2 101
GRASSY LAKE 7265 38.7 29.8 130 37.8 32.7 116
GROS VENTRE SUMMIT 8775 14.2 13.0 109 13.9 14.3 97
LEWIS LAKE DIVIDE 7860 38.8 29.7 131 29.5 33.2 89
PHILLIPS BENCH 8200 29.8 24.4 122 25.3 26.2 97
SALT RIVER SUMMIT 7600 14.5 12.2 119 16.6 15.2 109
SNAKE RIVER STATION 6920 21.0 16.3 129 24.1 22.9 105
SPRING CREEK DIVIDE 9000 26.2 23.5 111 25.4 24.2 105
THUMB DIVIDE 7980 21.6 14.4 150 20.5 18.9 108
TOGWOTEE PASS 9580 -M 21.0 * 26.2 24.8 106
TWO OCEAN PLATEAU 9360 33.8 22.4 151 23.3 27.8 84
WILLOW CREEK 8450 30.0 26.0 115 33.6 28.7 117
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Basin wide percent of average 128 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 24.3 20.0 122 21.9 15.2 144
BLACK BEAR 7950 46.6 32.0 146 -M 33.9 *
CANYON 7940 16.7 10.8 155 17.3 12.2 142
FISHER CREEK 9100 37.5 30.5 123 -M 30.9 *
MADISON PLATEAU 7750 -M 20.8 * 24.5 22.0 111
NORTHEAST ENTRANCE 7350 11.4 8.2 139 13.2 10.3 128
PARKER PEAK 9400 21.3 18.1 118 -M 13.2 *
SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155
THUMB DIVIDE 7980 21.6 14.4 150 20.5 18.9 108
TWO OCEAN PLATEAU 9360 33.8 22.4 151 23.3 27.8 84
WHISKEY CREEK 6800 19.2 14.6 132 19.6 18.1 108
WHITE MILL 8700 26.0 21.4 121 23.1 24.0 96
WOLVERINE 7650 13.1 10.2 128 11.8 11.1 106
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Basin wide percent of average 133 114
WIND RIVER
BURROUGHS CREEK 8750 16.0 13.2 121 17.5 14.1 124
COLD SPRINGS 9630 8.8 7.1 124 10.6 8.5 125
DEER PARK 9700 15.1 -M * 20.1 -M *
HOBBS PARK 10100 15.6 12.2 128 14.2 11.3 126
LITTLE WARM 9620 12.5 9.3 134 13.8 10.9 127
SOUTH PASS 9040 16.2 14.1 115 17.3 13.9 124
ST. LAWRENCE ALT 8620 6.4 6.3 102 9.3 8.1 115
TOGWOTEE PASS 9580 -M 21.0 * 26.2 24.8 106
TOWNSEND CREEK 8700 8.7 8.1 107 11.5 9.9 116
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Basin wide percent of average 120 119
BIGHORN BASIN
BALD MTN. 9375 17.9 17.1 105 16.5 14.2 116
BEAR TRAP MEADOW 7900 6.4 5.9 108 8.4 6.4 131
BLACKWATER 9780 27.7 18.2 152 23.0 15.3 150
BONE SPRINGS DIV 9350 14.0 13.5 104 13.9 11.8 118
EVENING STAR 9200 31.1 22.7 137 28.3 19.1 148
GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129
KIRWIN 9550 11.3 8.2 138 13.1 8.7 151
MARQUETTE 8760 7.2 6.6 109 7.8 7.2 108
MIDDLE POWDER 7760 8.1 9.8 83 13.4 9.3 144
OWL CREEK 8975 5.5 3.7 149 6.0 4.9 122
POWDER RIVER PASS 9480 11.3 8.9 127 13.1 9.5 138
SHELL CREEK 9580 14.8 12.7 117 13.7 10.7 128
SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155
SYLVAN ROAD 8120 16.0 11.3 142 18.1 13.7 132
TIMBER CREEK 7950 4.6 5.0 92 6.3 5.2 121
YOUNTS PEAK 8350 19.9 14.9 134 17.6 14.0 126
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Basin wide percent of average 122 135
SHOSHONE RIVER
BLACKWATER 9780 27.7 18.2 152 23.0 15.3 150
EVENING STAR 9200 31.1 22.7 137 28.3 19.1 148
KIRWIN 9550 11.3 8.2 138 13.1 8.7 151
MARQUETTE 8760 7.2 6.6 109 7.8 7.2 108
SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155
SYLVAN ROAD 8120 16.0 11.3 142 18.1 13.7 132
YOUNTS PEAK 8350 19.9 14.9 134 17.6 14.0 126
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Basin wide percent of average 136 141
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.4 5.9 108 8.4 6.4 131
BIG GOOSE 7990 5.1 -M * 7.9 -M *
BONE SPRINGS DIV 9350 14.0 13.5 104 13.9 11.8 118
BURGESS JUNCTION 7880 7.2 9.8 73 9.0 8.7 103
CLOUD PEAK RESERVOIR 9860 12.7 11.2 113 10.7 10.4 103
DOME LAKE 8880 7.1 11.4 62 9.7 10.5 92
GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129
HANSEN SAWMILL 8760 4.6 5.8 79 6.9 6.1 113
MIDDLE POWDER 7760 8.1 9.8 83 13.4 9.3 144
POWDER RIVER PASS 9480 11.3 8.9 127 13.1 9.5 138
SUCKER CREEK 8880 8.7 9.8 89 11.0 10.6 104
TIE CREEK 6870 2.9 -M * 6.9 8.3 83
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Basin wide percent of average 93 114
BELLE FOURCHE
BLIND PARK 6890 7.0 9.2 76 14.1 7.7 183
NORTH RAPID CREEK 6130 5.0 -M * 11.6 -M *
WARREN PEAK 6520 9.4 9.2 102 12.9 6.3 205
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Basin wide percent of average 89 193
UPPER N. PLATTE RIVER
COLUMBINE 9400 18.7 21.2 88 19.4 20.6 94
DIVIDE PEAK 8800 16.5 16.9 98 21.8 18.8 116
ELK RIVER 8700 16.3 16.8 97 19.7 15.6 126
JOE WRIGHT 10120 17.7 17.6 101 23.4 20.4 115
NORTH FRENCH CREEK 10100 25.5 20.6 124 25.8 19.0 136
OLD BATTLE 10000 24.3 26.4 92 31.1 24.7 126
SOUTH BRUSH CREEK 8400 11.1 9.5 117 16.9 13.0 130
TOWER 10500 38.3 37.6 102 34.7 30.2 115
WEBBER SPRINGS 9200 16.6 22.5 74 22.5 20.8 108
WILLOW CREEK PASS 9540 10.1 9.3 109 10.7 10.0 107
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Basin wide percent of average 98 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.7 20.1 93 19.8 15.6 127
CASPER MTN. 7900 9.6 12.4 77 14.5 10.9 133
DEADMAN HILL 10220 14.3 13.6 105 15.2 13.1 116
DEER PARK 9700 15.1 -M * 20.1 -M *
LAPRELE CREEK 8320 -M 8.5 * 12.6 9.2 137
RENO HILL 8400 11.6 10.9 106 16.0 14.7 109
ROACH 9700 14.5 14.1 103 16.9 17.4 97
SAND LAKE 10080 29.4 27.0 109 25.1 16.6 151
SOUTH PASS 9040 16.2 14.1 115 17.3 13.9 124
WINDY PEAK 7840 5.5 6.3 87 11.3 7.2 157
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Basin wide percent of average 101 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.3 10.0 123 15.7 12.7 124
DIVIDE PEAK 8800 16.5 16.9 98 21.8 18.8 116
OLD BATTLE 10000 24.3 26.4 92 31.1 24.7 126
SANDSTONE RS 8150 11.6 12.3 94 18.2 15.5 117
WHISKEY PARK 8950 23.4 23.8 98 24.5 22.7 108
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Basin wide percent of average 99 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 14.5 12.2 119 13.5 14.6 92
BLIND BULL SUM 8650 26.7 24.5 109 20.7 21.1 98
EAST RIM DIVIDE 7930 12.7 12.1 105 13.0 13.7 95
ELKHART PARK G.S. 9400 12.5 11.5 109 12.9 14.4 90
GROS VENTRE SUMMIT 8775 14.2 13.0 109 13.9 14.3 97
KENDALL R.S. 7740 14.6 12.6 116 14.8 14.0 106
LOOMIS PARK 8240 -M 15.0 * 18.8 16.9 111
NEW FORK LAKE 8340 11.5 10.0 115 11.1 13.0 85
SNIDER BASIN 8250 15.5 12.9 120 15.2 13.7 111
SPRING CREEK DIVIDE 9000 26.2 23.5 111 25.4 24.2 105
TRIPLE PEAK 8500 25.3 21.9 116 25.4 28.0 91
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Basin wide percent of average 113 98
LOWER GREEN RIVER
HAMS FORK 7840 13.1 10.6 124 10.0 12.0 83
HEWINTA 9500 10.0 8.6 116 12.3 10.3 119
HICKERSON PARK 9150 5.8 5.1 114 8.2 7.3 112
HOLE-IN-ROCK 9150 6.1 4.6 133 8.7 7.3 119
INDIAN CREEK 9425 26.0 23.1 113 21.3 22.6 94
KELLEY R.S. 8180 15.1 14.3 106 16.8 16.9 99
STEEL CREEK PARK 10100 12.5 12.7 98 14.4 10.4 138
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Basin wide percent of average 112 106
UPPER BEAR RIVER
BUG LAKE 7950 19.5 17.1 114 17.6 16.0 110
HAYDEN FORK 9400 13.8 13.8 100 17.4 15.3 114
KELLEY R.S. 8180 15.1 14.3 106 16.8 16.9 99
LILY LAKE 9050 11.7 10.7 109 15.6 11.8 132
MONTE CRISTO 8960 23.4 23.7 99 23.1 21.0 110
SALT RIVER SUMMIT 7600 14.5 12.2 119 16.6 15.2 109
TRIAL LAKE 9960 18.1 21.4 85 18.8 19.8 95
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Basin wide percent of average 103 109
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-M = Missing data
* = Data may not provide a valid measure of conditions.
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 1961-90.
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.