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: JANUARY 23 , 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 14.3 11.2 128 16.2 14.8 109
COTTONWOOD CREEK 7600 13.3 12.7 105 16.4 15.7 104
GRANITE CREEK 6770 11.4 11.0 104 13.4 15.6 86
GRASSY LAKE 7265 24.6 20.6 119 24.8 24.0 103
GROS VENTRE SUMMIT 8775 8.7 9.6 91 8.9 10.6 84
LEWIS LAKE DIVIDE 7860 23.4 20.4 115 24.5 24.5 100
PHILLIPS BENCH 8200 18.2 17.2 106 17.2 19.3 89
SALT RIVER SUMMIT 7600 8.2 7.9 104 10.5 11.2 94
SNAKE RIVER STATION 6920 13.6 11.1 123 16.4 16.9 97
SPRING CREEK DIVIDE 9000 16.0 16.3 98 16.3 17.6 93
THUMB DIVIDE 7980 13.7 10.3 133 13.7 13.9 99
TOGWOTEE PASS 9580 -M 15.3 * 18.5 18.3 101
TWO OCEAN PLATEAU 9360 22.7 16.7 136 19.7 20.5 96
WILLOW CREEK 8450 18.1 18.8 96 23.1 20.7 112
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Basin wide percent of average 112 98
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.0 14.8 122 16.1 11.1 145
BLACK BEAR 7950 29.5 22.0 134 -M 23.8 *
CANYON 7940 11.5 7.5 153 12.4 9.0 138
FISHER CREEK 9100 26.3 21.9 120 23.2 22.1 105
MADISON PLATEAU 7750 -M 14.5 * 18.0 15.7 115
NORTHEAST ENTRANCE 7350 7.9 5.8 136 9.8 7.6 129
PARKER PEAK 9400 15.4 13.3 116 -M 9.7 *
SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161
THUMB DIVIDE 7980 13.7 10.3 133 13.7 13.9 99
TWO OCEAN PLATEAU 9360 22.7 16.7 136 19.7 20.5 96
WHISKEY CREEK 6800 12.5 10.0 125 14.9 13.0 115
WHITE MILL 8700 17.2 15.4 112 15.6 17.4 90
WOLVERINE 7650 10.9 7.2 151 9.1 8.1 112
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Basin wide percent of average 128 114
WIND RIVER
BURROUGHS CREEK 8750 11.0 9.5 116 11.9 10.4 114
COLD SPRINGS 9630 6.2 5.4 115 7.8 6.5 120
DEER PARK 9700 9.2 -M * 12.7 -M *
HOBBS PARK 10100 9.6 9.4 102 9.9 8.5 116
LITTLE WARM 9620 8.4 6.6 127 9.4 8.2 115
SOUTH PASS 9040 10.3 10.5 98 11.7 10.0 117
ST. LAWRENCE ALT 8620 4.4 4.4 100 7.0 5.9 119
TOGWOTEE PASS 9580 -M 15.3 * 18.5 18.3 101
TOWNSEND CREEK 8700 5.2 5.7 91 7.7 7.2 107
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Basin wide percent of average 107 112
BIGHORN BASIN
BALD MTN. 9375 13.4 12.8 105 12.5 10.8 116
BEAR TRAP MEADOW 7900 4.4 4.5 98 7.0 5.1 137
BLACKWATER 9780 19.6 12.9 152 17.1 11.2 153
BONE SPRINGS DIV 9350 10.3 9.9 104 10.4 8.7 120
EVENING STAR 9200 22.8 16.5 138 23.1 14.0 165
GRAVE SPRINGS 8550 4.6 5.7 81 7.7 6.0 128
KIRWIN 9550 7.9 6.2 127 9.2 6.3 146
MARQUETTE 8760 5.4 4.8 113 6.2 5.5 113
MIDDLE POWDER 7760 4.8 7.3 66 10.8 7.3 148
OWL CREEK 8975 3.8 2.6 146 4.4 3.5 126
POWDER RIVER PASS 9480 8.0 6.5 123 10.0 7.2 139
SHELL CREEK 9580 11.5 9.5 121 10.7 8.2 130
SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161
SYLVAN ROAD 8120 11.7 7.7 152 13.5 10.2 132
TIMBER CREEK 7950 3.6 3.3 109 5.4 3.9 138
YOUNTS PEAK 8350 14.0 11.3 124 12.2 10.3 118
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Basin wide percent of average 121 138
SHOSHONE RIVER
BLACKWATER 9780 19.6 12.9 152 17.1 11.2 153
EVENING STAR 9200 22.8 16.5 138 23.1 14.0 165
KIRWIN 9550 7.9 6.2 127 9.2 6.3 146
MARQUETTE 8760 5.4 4.8 113 6.2 5.5 113
SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161
SYLVAN ROAD 8120 11.7 7.7 152 13.5 10.2 132
YOUNTS PEAK 8350 14.0 11.3 124 12.2 10.3 118
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Basin wide percent of average 135 145
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.4 4.5 98 7.0 5.1 137
BIG GOOSE 7990 3.6 -M * 6.4 -M *
BONE SPRINGS DIV 9350 10.3 9.9 104 10.4 8.7 120
BURGESS JUNCTION 7880 5.1 7.0 73 7.1 6.7 106
CLOUD PEAK RESERVOIR 9860 9.2 7.3 126 7.1 7.5 95
DOME LAKE 8880 5.3 8.3 64 7.2 8.2 88
GRAVE SPRINGS 8550 4.6 5.7 81 7.7 6.0 128
HANSEN SAWMILL 8760 3.4 4.2 81 5.6 4.7 119
MIDDLE POWDER 7760 4.8 7.3 66 10.8 7.3 148
POWDER RIVER PASS 9480 8.0 6.5 123 10.0 7.2 139
SUCKER CREEK 8880 6.5 6.8 96 8.5 8.0 106
TIE CREEK 6870 2.2 -M * 5.7 6.4 89
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Basin wide percent of average 91 115
BELLE FOURCHE
BLIND PARK 6890 4.9 6.7 73 11.9 5.7 209
NORTH RAPID CREEK 6130 3.8 -M * 10.3 -M *
WARREN PEAK 6520 5.8 6.7 87 10.8 4.8 225
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Basin wide percent of average 80 216
UPPER N. PLATTE RIVER
COLUMBINE 9400 12.8 14.2 90 14.2 14.8 96
DIVIDE PEAK 8800 11.3 12.3 92 16.7 14.9 112
ELK RIVER 8700 -M 11.3 * 14.6 11.4 128
JOE WRIGHT 10120 12.8 13.0 98 17.9 15.1 119
NORTH FRENCH CREEK 10100 18.1 14.7 123 19.1 13.9 137
OLD BATTLE 10000 16.3 18.9 86 22.3 17.9 125
SOUTH BRUSH CREEK 8400 5.7 6.5 88 13.7 10.5 130
TOWER 10500 25.7 27.1 95 25.2 22.0 115
WEBBER SPRINGS 9200 11.7 16.0 73 16.6 15.6 106
WILLOW CREEK PASS 9540 6.5 6.9 94 8.1 7.3 111
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Basin wide percent of average 93 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.2 14.9 82 14.7 11.1 132
CASPER MTN. 7900 5.1 8.8 58 10.6 8.2 129
DEADMAN HILL 10220 10.7 10.3 104 12.3 9.5 129
DEER PARK 9700 9.2 -M * 12.7 -M *
LAPRELE CREEK 8320 1.8 6.1 30 8.6 6.9 125
RENO HILL 8400 7.1 7.8 91 11.4 10.9 105
ROACH 9700 11.0 10.1 109 13.8 13.0 106
SAND LAKE 10080 19.8 19.5 102 19.1 12.0 159
SOUTH PASS 9040 10.3 10.5 98 11.7 10.0 117
WINDY PEAK 7840 2.7 4.1 66 8.2 5.4 152
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Basin wide percent of average 88 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.6 6.7 99 11.2 9.9 113
DIVIDE PEAK 8800 11.3 12.3 92 16.7 14.9 112
OLD BATTLE 10000 16.3 18.9 86 22.3 17.9 125
SANDSTONE RS 8150 6.7 8.5 79 13.2 12.1 109
WHISKEY PARK 8950 15.0 16.9 89 19.2 17.6 109
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Basin wide percent of average 88 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 9.8 8.6 114 9.1 10.8 84
BLIND BULL SUM 8650 16.6 17.3 96 13.8 15.1 91
EAST RIM DIVIDE 7930 7.8 8.3 94 8.2 10.1 81
ELKHART PARK G.S. 9400 7.9 8.1 98 8.5 10.6 80
GROS VENTRE SUMMIT 8775 8.7 9.6 91 8.9 10.6 84
KENDALL R.S. 7740 8.6 8.9 97 9.2 10.3 89
LOOMIS PARK 8240 8.8 10.4 85 11.9 12.6 94
NEW FORK LAKE 8340 7.0 7.0 100 7.3 9.6 76
SNIDER BASIN 8250 8.3 8.8 94 9.0 10.1 89
SPRING CREEK DIVIDE 9000 16.0 16.3 98 16.3 17.6 93
TRIPLE PEAK 8500 15.3 15.6 98 16.9 20.6 82
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Basin wide percent of average 97 86
LOWER GREEN RIVER
HAMS FORK 7840 6.7 7.1 94 6.5 8.9 73
HEWINTA 9500 5.2 5.6 93 8.1 7.8 104
HICKERSON PARK 9150 3.1 3.2 97 5.9 5.7 104
HOLE-IN-ROCK 9150 3.8 2.9 131 6.5 5.7 114
INDIAN CREEK 9425 15.0 16.3 92 13.0 16.6 78
KELLEY R.S. 8180 9.1 9.6 95 10.8 12.5 86
STEEL CREEK PARK 10100 7.7 9.1 85 9.6 8.1 119
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Basin wide percent of average 94 92
UPPER BEAR RIVER
BUG LAKE 7950 9.0 11.8 76 10.5 11.8 89
HAYDEN FORK 9400 7.7 9.4 82 11.3 11.0 103
KELLEY R.S. 8180 9.1 9.6 95 10.8 12.5 86
LILY LAKE 9050 7.3 7.6 96 10.4 8.8 118
MONTE CRISTO 8960 13.4 15.7 85 15.1 15.3 99
SALT RIVER SUMMIT 7600 8.2 7.9 104 10.5 11.2 94
TRIAL LAKE 9960 9.6 14.6 66 10.7 14.0 76
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Basin wide percent of average 84 94
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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.