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 29 , 1997
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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 29.8 17.6 169 34.6 22.5 154
COTTONWOOD CREEK 7600 30.9 24.0 129 32.4 25.4 128
GRANITE CREEK 6770 28.9 18.5 156 33.0 23.7 139
GRASSY LAKE 7265 44.8 35.7 125 52.9 37.6 141
GROS VENTRE SUMMIT 8775 22.3 15.6 143 21.3 16.1 132
LEWIS LAKE DIVIDE 7860 51.6 35.2 147 45.9 38.1 120
PHILLIPS BENCH 8200 42.5 29.0 147 45.6 30.2 151
SALT RIVER SUMMIT 7600 21.6 14.3 151 23.5 17.1 137
SNAKE RIVER STATION 6920 28.2 18.6 152 36.4 26.3 138
SPRING CREEK DIVIDE 9000 35.0 27.9 125 32.5 27.7 117
THUMB DIVIDE 7980 31.7 17.0 186 -M 21.1 *
TOGWOTEE PASS 9580 34.6 24.8 140 -M 28.6 *
TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 31.0 *
WILLOW CREEK 8450 41.5 30.1 138 40.9 32.5 126
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Basin wide percent of average 146 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 32.9 23.4 141 30.0 17.9 168
BLACK BEAR 7950 -M 37.9 * -M 40.6 *
CANYON 7940 23.3 12.9 181 26.3 14.2 185
FISHER CREEK 9100 55.7 35.6 156 -M 36.5 *
MADISON PLATEAU 7750 41.5 24.4 170 42.0 26.2 160
NORTHEAST ENTRANCE 7350 12.0 9.1 132 19.3 11.7 165
PARKER PEAK 9400 31.2 21.5 145 -M 15.4 *
SYLVAN LAKE 8420 32.2 22.0 146 32.5 19.0 171
THUMB DIVIDE 7980 31.7 17.0 186 -M 21.1 *
TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 31.0 *
WHISKEY CREEK 6800 25.4 17.2 148 31.5 21.8 144
WHITE MILL 8700 38.2 24.8 154 -M 28.2 *
WOLVERINE 7650 14.1 11.6 122 15.3 12.6 121
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Basin wide percent of average 156 160
WIND RIVER
BURROUGHS CREEK 8750 23.7 14.9 159 25.7 16.4 157
CHRISTINA LAKE 9980 19.2 15.2 126 23.0 16.5 139
COLD SPRINGS 9630 10.0 8.3 120 11.8 10.4 113
HOBBS PARK 10100 16.9 14.8 114 13.2 13.9 95
LITTLE WARM 9620 17.6 11.4 154 19.8 13.1 151
SOUTH PASS 9040 25.7 16.2 159 24.4 16.8 145
ST. LAWRENCE ALT 8620 8.8 7.5 117 10.6 10.0 106
TOGWOTEE PASS 9580 34.6 24.8 140 -M 28.6 *
TOWNSEND CREEK 8700 9.7 9.7 100 11.6 12.2 95
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Basin wide percent of average 135 128
BIGHORN BASIN
BALD MTN. 9375 21.8 20.2 108 18.1 17.1 106
BEAR TRAP MEADOW 7900 7.3 7.1 103 8.5 8.0 106
BLACKWATER 9780 37.5 22.0 170 28.5 17.8 160
BONE SPRINGS DIV 9350 18.5 16.2 114 16.2 14.8 109
EVENING STAR 9200 40.6 26.8 151 39.6 22.3 178
GRAVE SPRINGS 8550 12.4 -M * 11.1 9.4 118
KIRWIN 9550 14.4 9.8 147 15.7 10.6 148
LOST CREEK 8080 -M 13.4 * -M 11.6 *
MARQUETTE 8760 11.1 8.0 139 11.4 9.3 123
MIDDLE POWDER 7760 17.2 12.0 143 14.8 11.5 129
OWL CREEK 8975 8.2 4.5 182 6.5 6.1 107
POWDER RIVER PASS 9480 11.7 10.7 109 13.3 11.3 118
SHELL CREEK 9580 17.4 14.8 118 14.4 12.9 112
SYLVAN LAKE 8420 32.2 22.0 146 32.5 19.0 171
SYLVAN ROAD 8120 20.3 12.5 162 26.8 15.9 169
TIMBER CREEK 7950 7.2 6.2 116 8.0 6.8 118
YOUNTS PEAK 8350 23.9 17.1 140 -M 16.4 *
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Basin wide percent of average 138 138
SHOSHONE RIVER
BLACKWATER 9780 37.5 22.0 170 28.5 17.8 160
EVENING STAR 9200 40.6 26.8 151 39.6 22.3 178
KIRWIN 9550 14.4 9.8 147 15.7 10.6 148
MARQUETTE 8760 11.1 8.0 139 11.4 9.3 123
SYLVAN LAKE 8420 32.2 22.0 146 32.5 19.0 171
SYLVAN ROAD 8120 20.3 12.5 162 26.8 15.9 169
YOUNTS PEAK 8350 23.9 17.1 140 -M 16.4 *
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Basin wide percent of average 152 163
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.3 7.1 103 8.5 8.0 106
BONE SPRINGS DIV 9350 18.5 16.2 114 16.2 14.8 109
BURGESS JUNCTION 7880 13.5 11.6 116 13.0 11.2 116
CLOUD PEAK RESERVOIR 9860 17.7 14.6 121 15.1 13.0 116
DOME LAKE 8880 12.8 13.6 94 14.1 12.9 109
GRAVE SPRINGS 8550 12.4 -M * 11.1 9.4 118
HANSEN SAWMILL 8760 7.1 7.0 101 8.4 7.7 109
LOST CREEK 8080 -M 13.4 * -M 11.6 *
MIDDLE POWDER 7760 17.2 12.0 143 14.8 11.5 129
POWDER RIVER PASS 9480 11.7 10.7 109 13.3 11.3 118
SUCKER CREEK 8880 14.5 12.0 121 14.8 12.8 116
TIE CREEK 6870 7.5 -M * 12.2 10.7 114
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Basin wide percent of average 115 115
BELLE FOURCHE
BLIND PARK 6890 9.8 10.9 90 14.6 9.8 149
NORTH RAPID CREEK 6130 9.3 -M * 12.8 -M *
WARREN PEAK 6520 18.1 10.9 166 -M 7.8 *
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Basin wide percent of average 128 149*
UPPER N. PLATTE RIVER
COLUMBINE 9400 28.3 24.6 115 30.4 24.1 126
DIVIDE PEAK 8800 25.5 20.8 123 24.0 22.4 107
ELK RIVER 8700 26.4 19.7 134 24.2 18.8 129
JOE WRIGHT 10120 24.1 21.7 111 28.1 24.5 115
NORTH FRENCH CREEK 10100 35.0 25.1 139 27.6 23.1 119
OLD BATTLE 10000 39.0 31.6 123 36.7 29.6 124
SOUTH BRUSH CREEK 8400 13.4 13.0 103 17.2 16.0 108
TOWER 10500 53.4 44.7 119 46.6 35.6 131
WEBBER SPRINGS 9200 30.6 27.7 110 35.0 24.8 141
WILLOW CREEK PASS 9540 17.3 11.7 148 14.3 12.3 116
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Basin wide percent of average 122 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 35.2 25.7 137 26.9 19.0 142
CASPER MTN. 7900 21.3 16.1 132 19.8 13.7 145
CHRISTINA LAKE 9980 19.2 15.2 126 23.0 16.5 139
DEADMAN HILL 10220 15.8 16.3 97 17.9 16.3 110
LAPRELE CREEK 8320 14.3 10.4 138 14.1 11.5 123
RENO HILL 8400 22.2 14.0 159 19.3 18.8 103
ROACH 9700 23.1 17.1 135 21.2 20.7 102
SAND LAKE 10080 36.8 32.5 113 28.8 19.9 145
SOUTH PASS 9040 25.7 16.2 159 24.4 16.8 145
WINDY PEAK 7840 10.1 8.6 117 11.2 9.3 120
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Basin wide percent of average 130 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.5 11.2 129 27.5 15.0 183
DIVIDE PEAK 8800 25.5 20.8 123 24.0 22.4 107
OLD BATTLE 10000 39.0 31.6 123 36.7 29.6 124
SANDSTONE RS 8150 17.8 14.8 120 21.7 18.3 119
WHISKEY PARK 8950 36.6 28.5 128 32.5 27.6 118
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Basin wide percent of average 125 126
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.8 14.5 130 20.1 16.4 123
BLIND BULL SUM 8650 41.9 29.3 143 32.7 24.3 135
EAST RIM DIVIDE 7930 16.9 13.9 122 17.2 15.3 112
ELKHART PARK G.S. 9400 18.0 13.7 131 18.3 16.1 114
GROS VENTRE SUMMIT 8775 22.3 15.6 143 21.3 16.1 132
KENDALL R.S. 7740 24.0 14.6 164 23.6 15.7 150
LOOMIS PARK 8240 -M 17.4 * 27.4 19.1 143
NEW FORK LAKE 8340 15.1 11.2 135 13.2 14.6 90
SNIDER BASIN 8250 23.4 14.7 159 19.3 15.3 126
SPRING CREEK DIVIDE 9000 35.0 27.9 125 32.5 27.7 117
TRIPLE PEAK 8500 37.0 25.5 145 37.3 31.3 119
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Basin wide percent of average 140 124
LOWER GREEN RIVER
HAMS FORK 7840 15.9 12.2 130 14.7 13.5 109
HEWINTA 9500 10.4 11.2 93 14.0 12.8 109
HICKERSON PARK 9150 8.1 6.7 121 9.2 9.3 99
HOLE-IN-ROCK 9150 7.1 6.3 113 9.6 9.3 103
INDIAN CREEK 9425 39.0 28.5 137 31.4 26.2 120
KELLEY R.S. 8180 24.0 17.1 140 25.9 19.0 136
STEEL CREEK PARK 10100 15.9 16.2 98 15.6 12.6 124
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Basin wide percent of average 123 117
UPPER BEAR RIVER
BUG LAKE 7950 33.3 20.9 159 29.2 19.2 152
HAYDEN FORK 9400 17.8 16.3 109 25.1 18.7 134
KELLEY R.S. 8180 24.0 17.1 140 25.9 19.0 136
LILY LAKE 9050 16.9 13.1 129 19.3 14.5 133
MONTE CRISTO 8960 39.1 29.3 133 32.7 25.2 130
SALT RIVER SUMMIT 7600 21.6 14.3 151 23.5 17.1 137
TRIAL LAKE 9960 33.9 24.8 137 34.5 23.6 146
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Basin wide percent of average 137 139
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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.