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 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 8.7 8.1 107 10.8 11.4 95
COTTONWOOD CREEK 7600 9.0 9.0 100 12.1 12.1 100
GRANITE CREEK 6770 7.0 7.4 95 8.9 12.0 74
GRASSY LAKE 7265 15.9 14.6 109 17.3 18.5 94
GROS VENTRE SUMMIT 8775 6.2 7.0 89 6.7 8.1 83
LEWIS LAKE DIVIDE 7860 14.7 14.1 104 17.2 18.8 91
PHILLIPS BENCH 8200 12.0 11.8 102 12.5 14.5 86
SALT RIVER SUMMIT 7600 5.0 5.2 96 7.3 8.6 85
SNAKE RIVER STATION 6920 8.0 7.8 103 10.6 13.0 82
SPRING CREEK DIVIDE 9000 10.7 11.8 91 11.5 13.5 85
THUMB DIVIDE 7980 10.1 7.4 136 10.2 10.7 95
TOGWOTEE PASS 9580 11.9 11.3 105 13.4 14.0 96
TWO OCEAN PLATEAU 9360 16.3 12.8 127 14.8 15.7 94
WILLOW CREEK 8450 12.1 13.1 92 17.5 15.8 111
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Basin wide percent of average 104 91
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 11.7 11.7 100 10.6 8.6 123
BLACK BEAR 7950 20.1 15.9 126 19.5 17.5 111
CANYON 7940 7.6 5.4 141 8.6 7.0 123
FISHER CREEK 9100 18.1 15.9 114 16.1 16.3 99
MADISON PLATEAU 7750 -M 10.3 * 13.2 11.9 111
NORTHEAST ENTRANCE 7350 5.0 4.1 122 6.6 5.9 112
PARKER PEAK 9400 11.0 10.7 103 -M 7.7 *
SYLVAN LAKE 8420 11.7 10.9 107 14.1 9.9 142
THUMB DIVIDE 7980 10.1 7.4 136 10.2 10.7 95
TWO OCEAN PLATEAU 9360 16.3 12.8 127 14.8 15.7 94
WHISKEY CREEK 6800 8.5 7.1 120 10.7 9.9 108
WHITE MILL 8700 11.3 11.6 97 10.7 13.0 82
WOLVERINE 7650 8.1 5.3 153 6.4 6.5 98
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Basin wide percent of average 117 106
WIND RIVER
BURROUGHS CREEK 8750 8.0 7.2 111 8.8 8.2 107
COLD SPRINGS 9630 5.0 4.5 111 6.6 5.5 120
DEER PARK 9700 6.2 -M * 9.2 -M *
HOBBS PARK 10100 8.0 7.8 103 8.6 7.0 123
LITTLE WARM 9620 6.2 5.2 119 7.2 6.7 107
SOUTH PASS 9040 7.0 8.4 83 8.6 8.1 106
ST. LAWRENCE ALT 8620 3.7 3.4 109 6.6 5.0 132
TOGWOTEE PASS 9580 11.9 11.3 105 13.4 14.0 96
TOWNSEND CREEK 8700 4.3 4.6 93 6.8 5.9 115
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Basin wide percent of average 103 110
BIGHORN BASIN
BALD MTN. 9375 8.3 10.3 81 7.8 8.8 89
BEAR TRAP MEADOW 7900 3.4 3.7 92 6.0 4.3 140
BLACKWATER 9780 14.9 10.0 149 13.1 8.9 147
BONE SPRINGS DIV 9350 6.7 7.9 85 7.1 7.0 101
EVENING STAR 9200 16.0 13.1 122 16.6 10.9 152
GRAVE SPRINGS 8550 3.3 4.6 72 6.6 5.1 129
KIRWIN 9550 6.4 5.3 121 7.6 5.3 143
MARQUETTE 8760 -M 3.9 * 5.7 4.7 121
MIDDLE POWDER 7760 3.6 5.8 62 9.6 6.1 157
OWL CREEK 8975 -M 1.9 * 4.0 2.8 143
POWDER RIVER PASS 9480 4.8 5.2 92 6.8 5.7 119
SHELL CREEK 9580 7.5 7.6 99 6.7 6.5 103
SYLVAN LAKE 8420 11.7 10.9 107 14.1 9.9 142
SYLVAN ROAD 8120 7.8 5.9 132 9.4 8.1 116
TIMBER CREEK 7950 3.2 2.4 133 5.3 3.3 161
YOUNTS PEAK 8350 10.1 9.0 112 8.9 8.1 110
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Basin wide percent of average 106 128
SHOSHONE RIVER
BLACKWATER 9780 14.9 10.0 149 13.1 8.9 147
EVENING STAR 9200 16.0 13.1 122 16.6 10.9 152
KIRWIN 9550 6.4 5.3 121 7.6 5.3 143
MARQUETTE 8760 -M 3.9 * 5.7 4.7 121
SYLVAN LAKE 8420 11.7 10.9 107 14.1 9.9 142
SYLVAN ROAD 8120 7.8 5.9 132 9.4 8.1 116
YOUNTS PEAK 8350 10.1 9.0 112 8.9 8.1 110
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Basin wide percent of average 123 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.4 3.7 92 6.0 4.3 140
BIG GOOSE 7990 2.9 -M * 6.1 -M *
BONE SPRINGS DIV 9350 6.7 7.9 85 7.1 7.0 101
BURGESS JUNCTION 7880 3.6 5.6 64 5.8 5.6 104
CLOUD PEAK RESERVOIR 9860 7.0 5.7 123 6.8 6.2 110
DOME LAKE 8880 3.9 6.4 61 5.9 7.0 84
GRAVE SPRINGS 8550 3.3 4.6 72 6.6 5.1 129
HANSEN SAWMILL 8760 2.8 3.3 85 5.2 3.9 133
MIDDLE POWDER 7760 3.6 5.8 62 9.6 6.1 157
POWDER RIVER PASS 9480 4.8 5.2 92 6.8 5.7 119
SUCKER CREEK 8880 4.5 5.3 85 6.9 6.6 105
TIE CREEK 6870 1.1 -M * 4.4 5.4 81
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Basin wide percent of average 81 113
BELLE FOURCHE
BLIND PARK 6890 2.4 5.4 44 9.2 4.8 192
NORTH RAPID CREEK 6130 2.3 -M * 8.8 -M *
WARREN PEAK 6520 2.6 5.4 48 8.3 3.9 213
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Basin wide percent of average 46 201
UPPER N. PLATTE RIVER
COLUMBINE 9400 7.0 10.0 70 9.3 11.0 85
DIVIDE PEAK 8800 7.4 9.6 77 13.8 12.0 115
ELK RIVER 8700 3.7 8.2 45 10.2 8.9 115
JOE WRIGHT 10120 7.7 10.5 73 12.2 11.8 103
NORTH FRENCH CREEK 10100 12.1 11.6 104 14.5 11.0 132
OLD BATTLE 10000 11.0 15.0 73 16.1 14.4 112
SOUTH BRUSH CREEK 8400 4.1 4.9 84 11.1 9.9 112
TOWER 10500 15.5 22.0 70 17.2 16.9 102
WEBBER SPRINGS 9200 7.1 12.4 57 11.8 13.3 89
WILLOW CREEK PASS 9540 4.6 5.8 79 6.4 6.2 103
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Basin wide percent of average 73 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.1 12.1 59 9.8 8.7 113
CASPER MTN. 7900 4.2 7.6 55 9.8 7.1 138
DEADMAN HILL 10220 -M 8.0 * 9.3 7.5 124
DEER PARK 9700 6.2 -M * 9.2 -M *
LAPRELE CREEK 8320 1.2 4.8 25 7.4 5.2 142
RENO HILL 8400 5.8 6.3 92 10.0 9.8 102
ROACH 9700 6.2 7.8 79 9.4 10.3 91
SAND LAKE 10080 13.2 15.3 86 14.5 9.5 153
SOUTH PASS 9040 7.0 8.4 83 8.6 8.1 106
WINDY PEAK 7840 1.6 3.3 48 7.7 4.2 183
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Basin wide percent of average 71 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.7 5.1 73 8.9 7.6 117
DIVIDE PEAK 8800 7.4 9.6 77 13.8 12.0 115
OLD BATTLE 10000 11.0 15.0 73 16.1 14.4 112
SANDSTONE RS 8150 -M 6.3 * -M 9.1 *
WHISKEY PARK 8950 7.2 13.0 55 13.5 12.1 112
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Basin wide percent of average 69 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.0 6.1 115 6.4 8.3 77
BLIND BULL SUM 8650 11.5 12.7 91 9.8 11.1 88
EAST RIM DIVIDE 7930 5.4 5.8 93 6.1 7.7 79
ELKHART PARK G.S. 9400 5.6 5.9 95 6.4 8.1 79
GROS VENTRE SUMMIT 8775 6.2 7.0 89 6.7 8.1 83
KENDALL R.S. 7740 6.0 6.1 98 6.6 7.9 84
LOOMIS PARK 8240 6.9 7.2 96 8.2 9.6 85
NEW FORK LAKE 8340 4.9 4.7 104 5.4 7.4 73
SNIDER BASIN 8250 5.7 6.1 93 6.6 7.7 86
SPRING CREEK DIVIDE 9000 10.7 11.8 91 11.5 13.5 85
TRIPLE PEAK 8500 10.9 11.1 98 12.4 15.8 78
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Basin wide percent of average 96 82
LOWER GREEN RIVER
HAMS FORK 7840 4.0 4.4 91 4.8 6.8 71
HEWINTA 9500 3.2 4.0 80 6.0 6.5 92
HICKERSON PARK 9150 2.4 2.6 92 5.0 4.8 104
HOLE-IN-ROCK 9150 2.9 2.3 126 5.4 4.8 113
INDIAN CREEK 9425 10.0 11.8 85 8.8 12.8 69
KELLEY R.S. 8180 5.9 6.8 87 7.5 9.5 79
STEEL CREEK PARK 10100 5.0 7.3 68 7.2 6.9 104
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Basin wide percent of average 85 86
UPPER BEAR RIVER
BUG LAKE 7950 5.2 9.0 58 6.7 9.6 70
HAYDEN FORK 9400 4.9 6.9 71 7.6 8.9 85
KELLEY R.S. 8180 5.9 6.8 87 7.5 9.5 79
LILY LAKE 9050 4.8 6.3 76 7.9 7.3 108
MONTE CRISTO 8960 7.3 11.2 65 10.6 12.4 85
SALT RIVER SUMMIT 7600 5.0 5.2 96 7.3 8.6 85
TRIAL LAKE 9960 5.2 11.0 47 6.6 11.1 59
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Basin wide percent of average 68 80
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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.