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 THURSDAY: MARCH 11 , 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 24.5 16.4 149 25.0 21.0 119
COTTONWOOD CREEK 7600 23.8 20.7 115 25.5 23.4 109
GRANITE CREEK 6770 21.2 16.6 128 22.6 22.0 103
GRASSY LAKE 7265 41.2 32.0 129 38.4 34.3 112
GROS VENTRE SUMMIT 8775 15.0 14.0 107 14.7 14.9 99
LEWIS LAKE DIVIDE 7860 40.5 31.9 127 -M 34.8 *
PHILLIPS BENCH 8200 31.6 26.2 121 25.3 27.6 92
SALT RIVER SUMMIT 7600 15.3 13.0 118 17.3 15.8 109
SNAKE RIVER STATION 6920 22.0 17.3 127 25.0 24.1 104
SPRING CREEK DIVIDE 9000 27.4 25.1 109 26.0 25.4 102
THUMB DIVIDE 7980 -M 15.4 * -M 19.6 *
TOGWOTEE PASS 9580 -M 22.3 * 27.0 26.1 103
TWO OCEAN PLATEAU 9360 34.7 24.0 145 -M 28.9 *
WILLOW CREEK 8450 31.7 27.7 114 34.5 30.0 115
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Basin wide percent of average 124 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 25.3 21.3 119 22.5 16.1 140
BLACK BEAR 7950 48.8 34.2 143 -M 36.2 *
CANYON 7940 17.5 11.6 151 18.0 12.8 141
FISHER CREEK 9100 39.0 32.3 121 -M 32.8 *
MADISON PLATEAU 7750 -M 22.1 * -M 23.4 *
NORTHEAST ENTRANCE 7350 12.1 8.6 141 13.7 10.7 128
PARKER PEAK 9400 22.2 19.4 114 -M 13.9 *
SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151
THUMB DIVIDE 7980 -M 15.4 * -M 19.6 *
TWO OCEAN PLATEAU 9360 34.7 24.0 145 -M 28.9 *
WHISKEY CREEK 6800 20.1 15.6 129 -M 19.4 *
WHITE MILL 8700 27.1 22.8 119 24.1 25.4 95
WOLVERINE 7650 13.7 10.7 128 12.3 11.6 106
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Basin wide percent of average 129 124*
WIND RIVER
BURROUGHS CREEK 8750 16.3 13.9 117 17.6 14.9 118
COLD SPRINGS 9630 8.9 7.5 119 10.8 9.1 119
DEER PARK 9700 15.6 -M * 20.5 -M *
HOBBS PARK 10100 15.9 13.1 121 14.4 12.2 118
LITTLE WARM 9620 13.1 10.1 130 14.3 11.6 123
SOUTH PASS 9040 16.5 14.9 111 17.5 14.9 117
ST. LAWRENCE ALT 8620 6.5 6.8 96 9.4 8.7 108
TOGWOTEE PASS 9580 -M 22.3 * 27.0 26.1 103
TOWNSEND CREEK 8700 8.4 8.7 97 11.3 10.7 106
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Basin wide percent of average 114 113
BIGHORN BASIN
BALD MTN. 9375 18.9 18.3 103 17.4 15.2 114
BEAR TRAP MEADOW 7900 7.1 6.3 113 8.9 6.9 129
BLACKWATER 9780 28.7 19.6 146 23.8 16.1 148
BONE SPRINGS DIV 9350 15.0 14.5 103 15.0 12.8 117
EVENING STAR 9200 32.2 24.1 134 -M 20.2 *
GRAVE SPRINGS 8550 7.8 8.2 95 10.4 8.1 128
KIRWIN 9550 11.8 8.7 136 13.6 9.3 146
MARQUETTE 8760 7.6 7.1 107 8.3 7.9 105
MIDDLE POWDER 7760 10.2 10.6 96 14.7 10.0 147
OWL CREEK 8975 5.8 4.0 145 6.4 5.3 121
POWDER RIVER PASS 9480 12.4 9.6 129 14.6 10.1 145
SHELL CREEK 9580 15.8 13.5 117 14.6 11.4 128
SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151
SYLVAN ROAD 8120 16.5 12.0 138 18.7 14.4 130
TIMBER CREEK 7950 4.6 5.4 85 6.3 5.7 111
YOUNTS PEAK 8350 20.4 15.7 130 17.9 14.8 121
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Basin wide percent of average 121 131
SHOSHONE RIVER
BLACKWATER 9780 28.7 19.6 146 23.8 16.1 148
EVENING STAR 9200 32.2 24.1 134 -M 20.2 *
KIRWIN 9550 11.8 8.7 136 13.6 9.3 146
MARQUETTE 8760 7.6 7.1 107 8.3 7.9 105
SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151
SYLVAN ROAD 8120 16.5 12.0 138 18.7 14.4 130
YOUNTS PEAK 8350 20.4 15.7 130 17.9 14.8 121
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Basin wide percent of average 132 136
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.1 6.3 113 8.9 6.9 129
BIG GOOSE 7990 6.1 -M * 9.1 -M *
BONE SPRINGS DIV 9350 15.0 14.5 103 15.0 12.8 117
BURGESS JUNCTION 7880 8.1 10.4 78 9.9 9.5 104
CLOUD PEAK RESERVOIR 9860 14.0 12.5 112 11.9 11.3 105
DOME LAKE 8880 7.2 12.2 59 10.6 11.3 94
GRAVE SPRINGS 8550 7.8 8.2 95 10.4 8.1 128
HANSEN SAWMILL 8760 5.5 6.3 87 7.8 6.6 118
MIDDLE POWDER 7760 10.2 10.6 96 14.7 10.0 147
POWDER RIVER PASS 9480 12.4 9.6 129 14.6 10.1 145
SUCKER CREEK 8880 9.9 10.6 93 12.1 11.3 107
TIE CREEK 6870 3.7 -M * 7.9 9.1 87
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Basin wide percent of average 96 116
BELLE FOURCHE
BLIND PARK 6890 7.9 9.8 81 14.7 8.4 175
NORTH RAPID CREEK 6130 5.7 -M * 12.2 -M *
WARREN PEAK 6520 10.6 9.8 108 13.7 6.8 201
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Basin wide percent of average 94 187
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.1 22.7 89 20.6 21.8 94
DIVIDE PEAK 8800 17.3 18.2 95 22.5 20.0 112
ELK RIVER 8700 17.5 17.9 98 20.3 16.7 122
JOE WRIGHT 10120 18.9 19.0 99 24.8 21.7 114
NORTH FRENCH CREEK 10100 27.0 22.2 122 27.2 20.4 133
OLD BATTLE 10000 26.0 28.0 93 32.9 26.3 125
SOUTH BRUSH CREEK 8400 10.4 10.7 97 18.1 14.0 129
TOWER 10500 40.7 40.1 101 36.0 32.0 112
WEBBER SPRINGS 9200 17.7 24.2 73 23.8 22.2 107
WILLOW CREEK PASS 9540 10.7 10.1 106 10.9 10.8 101
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Basin wide percent of average 97 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.9 21.8 87 20.7 16.8 123
CASPER MTN. 7900 10.6 13.4 79 15.4 11.8 131
DEADMAN HILL 10220 15.0 14.6 103 16.2 14.2 114
DEER PARK 9700 15.6 -M * 20.5 -M *
LAPRELE CREEK 8320 -M 9.1 * 13.5 10.0 135
RENO HILL 8400 12.7 11.9 107 17.1 16.1 106
ROACH 9700 14.4 15.1 95 18.1 18.5 98
SAND LAKE 10080 31.3 28.9 108 26.4 17.7 149
SOUTH PASS 9040 16.5 14.9 111 17.5 14.9 117
WINDY PEAK 7840 6.1 7.2 85 12.0 7.9 152
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Basin wide percent of average 98 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.0 10.5 124 16.2 13.5 120
DIVIDE PEAK 8800 17.3 18.2 95 22.5 20.0 112
OLD BATTLE 10000 26.0 28.0 93 32.9 26.3 125
SANDSTONE RS 8150 12.4 13.2 94 18.9 16.4 115
WHISKEY PARK 8950 25.1 25.5 98 26.3 24.3 108
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Basin wide percent of average 98 116
UPPER GREEN RIVER
BIG SANDY OPENING 9100 15.3 13.0 118 14.2 15.2 93
BLIND BULL SUM 8650 27.3 26.3 104 21.2 22.2 95
EAST RIM DIVIDE 7930 13.0 12.9 101 13.3 14.2 94
ELKHART PARK G.S. 9400 13.0 12.4 105 13.3 14.9 89
GROS VENTRE SUMMIT 8775 15.0 14.0 107 14.7 14.9 99
KENDALL R.S. 7740 15.0 13.9 108 15.1 14.5 104
LOOMIS PARK 8240 -M 16.0 * 19.2 17.6 109
NEW FORK LAKE 8340 11.9 10.5 113 11.3 13.5 84
SNIDER BASIN 8250 16.1 13.7 118 15.8 14.2 111
SPRING CREEK DIVIDE 9000 27.4 25.1 109 26.0 25.4 102
TRIPLE PEAK 8500 26.6 23.2 115 26.8 29.1 92
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Basin wide percent of average 109 98
LOWER GREEN RIVER
HAMS FORK 7840 13.8 11.5 120 10.6 12.5 85
HEWINTA 9500 10.8 9.6 113 13.2 11.1 119
HICKERSON PARK 9150 6.6 5.6 118 9.0 7.9 114
HOLE-IN-ROCK 9150 6.4 5.2 123 9.1 7.9 115
INDIAN CREEK 9425 27.6 25.2 110 22.5 23.8 95
KELLEY R.S. 8180 16.0 15.4 104 17.6 17.6 100
STEEL CREEK PARK 10100 13.5 13.8 98 15.3 11.1 138
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Basin wide percent of average 110 106
UPPER BEAR RIVER
BUG LAKE 7950 20.7 18.4 113 18.3 17.1 107
HAYDEN FORK 9400 15.5 14.9 104 18.7 16.5 113
KELLEY R.S. 8180 16.0 15.4 104 17.6 17.6 100
LILY LAKE 9050 12.8 11.5 111 16.9 12.7 133
MONTE CRISTO 8960 25.1 25.6 98 24.6 22.4 110
SALT RIVER SUMMIT 7600 15.3 13.0 118 17.3 15.8 109
TRIAL LAKE 9960 19.5 23.0 85 20.2 21.1 96
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Basin wide percent of average 103 108
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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.