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 MONDAY: JANUARY 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 10.7 9.5 113 12.8 12.8 100
COTTONWOOD CREEK 7600 9.6 10.7 90 12.8 13.6 94
GRANITE CREEK 6770 7.7 9.1 85 9.6 13.5 71
GRASSY LAKE 7265 19.2 17.3 111 20.3 20.8 98
GROS VENTRE SUMMIT 8775 6.6 8.2 80 6.9 9.2 75
LEWIS LAKE DIVIDE 7860 17.2 16.9 102 19.2 21.2 91
PHILLIPS BENCH 8200 13.9 14.2 98 14.4 16.6 87
SALT RIVER SUMMIT 7600 5.3 6.5 82 7.6 9.7 78
SNAKE RIVER STATION 6920 9.9 9.3 106 12.6 14.7 86
SPRING CREEK DIVIDE 9000 11.7 13.8 85 12.3 15.3 80
THUMB DIVIDE 7980 10.7 8.7 123 10.9 12.0 91
TOGWOTEE PASS 9580 -M 13.1 * 15.7 15.8 99
TWO OCEAN PLATEAU 9360 18.4 14.5 127 16.4 17.8 92
WILLOW CREEK 8450 13.3 15.7 85 18.0 17.9 101
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Basin wide percent of average 100 90
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 14.9 13.1 114 13.6 9.7 140
BLACK BEAR 7950 22.7 18.6 122 21.0 20.2 104
CANYON 7940 9.1 6.4 142 10.1 7.9 128
FISHER CREEK 9100 22.0 18.6 118 19.8 18.8 105
MADISON PLATEAU 7750 -M 12.2 * 14.7 13.5 109
NORTHEAST ENTRANCE 7350 6.7 4.9 137 8.6 6.6 130
PARKER PEAK 9400 13.3 11.9 112 -M 8.5 *
SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158
THUMB DIVIDE 7980 10.7 8.7 123 10.9 12.0 91
TWO OCEAN PLATEAU 9360 18.4 14.5 127 16.4 17.8 92
WHISKEY CREEK 6800 9.6 8.4 114 12.1 11.2 108
WHITE MILL 8700 14.0 13.3 105 12.9 14.9 87
WOLVERINE 7650 9.8 6.1 161 7.7 7.2 107
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Basin wide percent of average 121 109
WIND RIVER
BURROUGHS CREEK 8750 8.8 8.2 107 9.6 9.1 105
COLD SPRINGS 9630 5.3 4.9 108 6.9 6.0 115
DEER PARK 9700 6.1 -M * 9.2 -M *
HOBBS PARK 10100 8.4 8.6 98 8.6 7.6 113
LITTLE WARM 9620 7.0 5.8 121 8.2 7.3 112
SOUTH PASS 9040 7.1 9.4 76 8.7 8.9 98
ST. LAWRENCE ALT 8620 4.0 3.8 105 6.6 5.4 122
TOGWOTEE PASS 9580 -M 13.1 * 15.7 15.8 99
TOWNSEND CREEK 8700 4.6 5.1 90 7.2 6.4 112
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Basin wide percent of average 99 108
BIGHORN BASIN
BALD MTN. 9375 12.6 11.5 110 11.9 9.7 123
BEAR TRAP MEADOW 7900 3.8 4.1 93 6.6 4.7 140
BLACKWATER 9780 16.8 11.3 149 14.8 9.9 149
BONE SPRINGS DIV 9350 9.6 8.8 109 9.9 7.7 129
EVENING STAR 9200 19.5 14.7 133 20.4 12.3 166
GRAVE SPRINGS 8550 4.4 5.1 86 7.4 5.5 135
KIRWIN 9550 6.9 5.7 121 8.0 5.7 140
MARQUETTE 8760 5.2 4.3 121 6.4 5.1 125
MIDDLE POWDER 7760 4.6 6.5 71 10.5 6.6 159
OWL CREEK 8975 3.7 2.3 161 4.6 3.1 148
POWDER RIVER PASS 9480 7.3 5.7 128 9.2 6.3 146
SHELL CREEK 9580 10.7 8.5 126 9.5 7.2 132
SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158
SYLVAN ROAD 8120 10.0 6.7 149 11.8 9.0 131
TIMBER CREEK 7950 3.3 2.8 118 5.3 3.6 147
YOUNTS PEAK 8350 11.7 10.0 117 9.4 9.1 103
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Basin wide percent of average 121 140
SHOSHONE RIVER
BLACKWATER 9780 16.8 11.3 149 14.8 9.9 149
EVENING STAR 9200 19.5 14.7 133 20.4 12.3 166
KIRWIN 9550 6.9 5.7 121 8.0 5.7 140
MARQUETTE 8760 5.2 4.3 121 6.4 5.1 125
SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158
SYLVAN ROAD 8120 10.0 6.7 149 11.8 9.0 131
YOUNTS PEAK 8350 11.7 10.0 117 9.4 9.1 103
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Basin wide percent of average 131 142
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.8 4.1 93 6.6 4.7 140
BIG GOOSE 7990 3.5 -M * 6.3 -M *
BONE SPRINGS DIV 9350 9.6 8.8 109 9.9 7.7 129
BURGESS JUNCTION 7880 5.0 6.2 81 6.9 6.1 113
CLOUD PEAK RESERVOIR 9860 9.0 6.4 141 8.3 6.7 124
DOME LAKE 8880 5.1 7.2 71 7.0 7.5 93
GRAVE SPRINGS 8550 4.4 5.1 86 7.4 5.5 135
HANSEN SAWMILL 8760 3.5 3.7 95 5.5 4.3 128
MIDDLE POWDER 7760 4.6 6.5 71 10.5 6.6 159
POWDER RIVER PASS 9480 7.3 5.7 128 9.2 6.3 146
SUCKER CREEK 8880 6.2 5.9 105 8.5 7.2 118
TIE CREEK 6870 2.2 -M * 5.6 5.9 95
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Basin wide percent of average 98 125
BELLE FOURCHE
BLIND PARK 6890 4.4 5.9 75 11.5 5.2 221
NORTH RAPID CREEK 6130 3.7 -M * 10.4 -M *
WARREN PEAK 6520 5.2 5.9 88 10.5 4.3 244
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Basin wide percent of average 81 232
UPPER N. PLATTE RIVER
COLUMBINE 9400 9.1 11.9 76 11.3 12.6 90
DIVIDE PEAK 8800 9.0 10.9 83 14.9 13.3 112
ELK RIVER 8700 5.8 9.6 60 12.3 10.0 123
JOE WRIGHT 10120 9.9 11.6 85 14.7 13.2 111
NORTH FRENCH CREEK 10100 15.5 13.0 119 17.5 12.3 142
OLD BATTLE 10000 12.3 16.7 74 18.4 15.9 116
SOUTH BRUSH CREEK 8400 5.8 5.6 104 12.9 10.2 126
TOWER 10500 18.9 23.8 79 20.0 19.1 105
WEBBER SPRINGS 9200 8.6 14.0 61 13.4 14.3 94
WILLOW CREEK PASS 9540 4.8 6.3 76 6.8 6.6 103
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Basin wide percent of average 81 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.7 13.4 72 12.1 9.7 125
CASPER MTN. 7900 4.7 8.0 59 10.3 7.6 136
DEADMAN HILL 10220 10.0 9.0 111 10.5 8.3 127
DEER PARK 9700 6.1 -M * 9.2 -M *
LAPRELE CREEK 8320 1.7 5.3 32 8.1 5.9 137
RENO HILL 8400 6.5 7.0 93 10.9 10.2 107
ROACH 9700 8.0 8.8 91 11.1 11.5 97
SAND LAKE 10080 16.9 17.2 98 17.2 10.6 162
SOUTH PASS 9040 7.1 9.4 76 8.7 8.9 98
WINDY PEAK 7840 2.4 3.6 67 8.2 4.7 174
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Basin wide percent of average 82 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 5.8 88 9.6 8.6 112
DIVIDE PEAK 8800 9.0 10.9 83 14.9 13.3 112
OLD BATTLE 10000 12.3 16.7 74 18.4 15.9 116
SANDSTONE RS 8150 -M 7.3 * -M 10.4 *
WHISKEY PARK 8950 9.9 14.7 67 15.7 14.4 109
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Basin wide percent of average 75 112
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.4 7.3 101 6.9 9.4 73
BLIND BULL SUM 8650 12.3 14.9 83 10.3 12.8 80
EAST RIM DIVIDE 7930 5.8 6.9 84 6.4 8.7 74
ELKHART PARK G.S. 9400 6.0 6.9 87 6.6 9.2 72
GROS VENTRE SUMMIT 8775 6.6 8.2 80 6.9 9.2 75
KENDALL R.S. 7740 6.2 7.5 83 7.0 8.9 79
LOOMIS PARK 8240 7.3 8.6 85 8.9 10.9 82
NEW FORK LAKE 8340 5.2 5.7 91 6.0 8.4 71
SNIDER BASIN 8250 6.1 7.4 82 6.9 8.7 79
SPRING CREEK DIVIDE 9000 11.7 13.8 85 12.3 15.3 80
TRIPLE PEAK 8500 11.4 13.1 87 13.1 17.9 73
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Basin wide percent of average 86 76
LOWER GREEN RIVER
HAMS FORK 7840 4.1 5.7 72 4.8 7.7 62
HEWINTA 9500 3.4 4.8 71 6.1 7.0 87
HICKERSON PARK 9150 2.4 2.9 83 5.2 5.2 100
HOLE-IN-ROCK 9150 3.0 2.6 115 5.7 5.2 110
INDIAN CREEK 9425 10.6 13.9 76 9.5 14.4 66
KELLEY R.S. 8180 6.1 8.1 75 7.8 10.8 72
STEEL CREEK PARK 10100 5.3 8.1 65 7.4 7.4 100
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Basin wide percent of average 76 81
UPPER BEAR RIVER
BUG LAKE 7950 4.9 10.3 48 6.9 10.6 65
HAYDEN FORK 9400 4.9 8.2 60 8.5 9.8 87
KELLEY R.S. 8180 6.1 8.1 75 7.8 10.8 72
LILY LAKE 9050 -M 6.9 * -M 7.9 *
MONTE CRISTO 8960 7.4 13.4 55 10.7 13.7 78
SALT RIVER SUMMIT 7600 5.3 6.5 82 7.6 9.7 78
TRIAL LAKE 9960 5.0 12.8 39 6.4 12.4 52
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Basin wide percent of average 57 71
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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.