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 16 , 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 11.5 10.2 113 13.7 13.7 100
COTTONWOOD CREEK 7600 10.2 11.6 88 13.3 14.5 92
GRANITE CREEK 6770 8.2 9.9 83 10.2 14.4 71
GRASSY LAKE 7265 20.6 18.8 110 21.4 22.2 96
GROS VENTRE SUMMIT 8775 6.7 8.8 76 7.1 9.7 73
LEWIS LAKE DIVIDE 7860 18.9 18.5 102 20.6 22.6 91
PHILLIPS BENCH 8200 14.6 15.5 94 15.1 17.7 85
SALT RIVER SUMMIT 7600 5.5 7.1 77 7.9 10.3 77
SNAKE RIVER STATION 6920 11.0 10.1 109 13.7 15.6 88
SPRING CREEK DIVIDE 9000 12.4 14.9 83 12.9 16.3 79
THUMB DIVIDE 7980 11.2 9.4 119 11.4 12.8 89
TOGWOTEE PASS 9580 -M 14.1 * 16.3 16.8 97
TWO OCEAN PLATEAU 9360 19.4 15.5 125 17.3 18.9 92
WILLOW CREEK 8450 14.1 17.0 83 19.3 19.1 101
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Basin wide percent of average 98 89
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.9 13.8 115 14.4 10.2 141
BLACK BEAR 7950 24.5 20.1 122 22.3 21.7 103
CANYON 7940 9.6 6.9 139 10.7 8.4 127
FISHER CREEK 9100 23.5 20.1 117 21.0 20.2 104
MADISON PLATEAU 7750 -M 13.2 * 15.7 14.4 109
NORTHEAST ENTRANCE 7350 7.0 5.3 132 8.8 7.0 126
PARKER PEAK 9400 13.8 12.5 110 -M 9.0 *
SYLVAN LAKE 8420 15.4 12.9 119 17.8 11.4 156
THUMB DIVIDE 7980 11.2 9.4 119 11.4 12.8 89
TWO OCEAN PLATEAU 9360 19.4 15.5 125 17.3 18.9 92
WHISKEY CREEK 6800 10.2 9.1 112 12.7 12.0 106
WHITE MILL 8700 15.1 14.3 106 13.9 15.9 87
WOLVERINE 7650 9.8 6.6 148 7.9 7.6 104
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Basin wide percent of average 120 108
WIND RIVER
BURROUGHS CREEK 8750 9.5 8.8 108 10.3 9.6 107
COLD SPRINGS 9630 5.3 5.1 104 6.9 6.2 111
DEER PARK 9700 6.1 -M * 9.3 -M *
HOBBS PARK 10100 8.4 9.0 93 8.8 8.0 110
LITTLE WARM 9620 7.3 6.2 118 8.2 7.7 106
SOUTH PASS 9040 7.2 9.9 73 8.7 9.4 93
ST. LAWRENCE ALT 8620 4.0 4.0 100 6.6 5.6 118
TOGWOTEE PASS 9580 -M 14.1 * 16.3 16.8 97
TOWNSEND CREEK 8700 4.5 5.4 83 7.1 6.8 104
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Basin wide percent of average 95 104
BIGHORN BASIN
BALD MTN. 9375 12.7 12.1 105 11.9 10.2 117
BEAR TRAP MEADOW 7900 3.9 4.2 93 6.7 4.8 140
BLACKWATER 9780 17.4 12.0 145 15.3 10.4 147
BONE SPRINGS DIV 9350 9.8 9.3 105 9.9 8.1 122
EVENING STAR 9200 20.5 15.5 132 21.4 13.0 165
GRAVE SPRINGS 8550 4.3 5.3 81 7.4 5.7 130
KIRWIN 9550 6.9 5.9 117 8.2 6.0 137
MARQUETTE 8760 -M 4.5 * 6.2 5.2 119
MIDDLE POWDER 7760 4.5 6.9 65 10.6 6.9 154
OWL CREEK 8975 3.6 2.4 150 4.4 3.3 133
POWDER RIVER PASS 9480 7.4 6.1 121 9.4 6.7 140
SHELL CREEK 9580 10.9 9.0 121 9.8 7.6 129
SYLVAN LAKE 8420 15.4 12.9 119 17.8 11.4 156
SYLVAN ROAD 8120 10.3 7.1 145 12.1 9.5 127
TIMBER CREEK 7950 3.3 3.0 110 5.3 3.7 143
YOUNTS PEAK 8350 12.4 10.6 117 10.7 9.6 111
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Basin wide percent of average 117 137
SHOSHONE RIVER
BLACKWATER 9780 17.4 12.0 145 15.3 10.4 147
EVENING STAR 9200 20.5 15.5 132 21.4 13.0 165
KIRWIN 9550 6.9 5.9 117 8.2 6.0 137
MARQUETTE 8760 -M 4.5 * 6.2 5.2 119
SYLVAN LAKE 8420 15.4 12.9 119 17.8 11.4 156
SYLVAN ROAD 8120 10.3 7.1 145 12.1 9.5 127
YOUNTS PEAK 8350 12.4 10.6 117 10.7 9.6 111
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Basin wide percent of average 130 141
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.9 4.2 93 6.7 4.8 140
BIG GOOSE 7990 3.5 -M * 6.4 -M *
BONE SPRINGS DIV 9350 9.8 9.3 105 9.9 8.1 122
BURGESS JUNCTION 7880 5.0 6.6 76 7.0 6.3 111
CLOUD PEAK RESERVOIR 9860 9.2 6.8 135 8.2 7.1 115
DOME LAKE 8880 5.1 7.7 66 7.0 7.8 90
GRAVE SPRINGS 8550 4.3 5.3 81 7.4 5.7 130
HANSEN SAWMILL 8760 3.4 3.9 87 5.5 4.4 125
MIDDLE POWDER 7760 4.5 6.9 65 10.6 6.9 154
POWDER RIVER PASS 9480 7.4 6.1 121 9.4 6.7 140
SUCKER CREEK 8880 6.3 6.3 100 8.5 7.5 113
TIE CREEK 6870 2.1 -M * 5.6 6.1 92
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Basin wide percent of average 93 120
BELLE FOURCHE
BLIND PARK 6890 4.5 6.3 71 11.6 5.4 215
NORTH RAPID CREEK 6130 3.8 -M * 10.4 -M *
WARREN PEAK 6520 5.5 6.3 87 10.7 4.5 238
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Basin wide percent of average 79 225
UPPER N. PLATTE RIVER
COLUMBINE 9400 9.4 13.0 72 11.3 13.5 84
DIVIDE PEAK 8800 9.1 11.5 79 15.0 13.9 108
ELK RIVER 8700 6.4 10.3 62 12.1 10.6 114
JOE WRIGHT 10120 10.0 12.2 82 14.8 14.0 106
NORTH FRENCH CREEK 10100 16.1 13.7 118 17.8 12.9 138
OLD BATTLE 10000 12.6 17.6 72 18.7 16.7 112
SOUTH BRUSH CREEK 8400 5.4 6.0 90 13.1 10.3 127
TOWER 10500 19.5 24.9 78 20.3 20.3 100
WEBBER SPRINGS 9200 8.7 14.9 58 13.6 14.8 92
WILLOW CREEK PASS 9540 4.8 6.5 74 6.6 6.9 96
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Basin wide percent of average 78 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.8 14.1 70 12.5 10.3 121
CASPER MTN. 7900 4.6 8.3 55 10.3 7.8 132
DEADMAN HILL 10220 -M 9.6 * 10.5 8.8 119
DEER PARK 9700 6.1 -M * 9.3 -M *
LAPRELE CREEK 8320 1.5 5.7 26 8.1 6.3 129
RENO HILL 8400 6.5 7.4 88 10.9 10.5 104
ROACH 9700 8.2 9.4 87 11.1 12.1 92
SAND LAKE 10080 17.5 18.2 96 17.4 11.1 157
SOUTH PASS 9040 7.2 9.9 73 8.7 9.4 93
WINDY PEAK 7840 2.3 3.7 62 8.1 5.0 162
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Basin wide percent of average 75 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 6.2 82 9.9 9.1 109
DIVIDE PEAK 8800 9.1 11.5 79 15.0 13.9 108
OLD BATTLE 10000 12.6 17.6 72 18.7 16.7 112
SANDSTONE RS 8150 5.1 7.8 65 11.5 11.1 104
WHISKEY PARK 8950 11.0 15.7 70 16.1 15.8 102
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Basin wide percent of average 73 107
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.5 7.9 95 6.9 10.0 69
BLIND BULL SUM 8650 12.9 16.0 81 10.7 13.8 78
EAST RIM DIVIDE 7930 6.0 7.5 80 6.5 9.3 70
ELKHART PARK G.S. 9400 6.1 7.5 81 6.7 9.8 68
GROS VENTRE SUMMIT 8775 6.7 8.8 76 7.1 9.7 73
KENDALL R.S. 7740 6.6 8.2 80 7.3 9.5 77
LOOMIS PARK 8240 7.8 9.4 83 9.4 11.6 81
NEW FORK LAKE 8340 5.3 6.3 84 6.0 8.9 67
SNIDER BASIN 8250 6.3 8.0 79 7.1 9.3 76
SPRING CREEK DIVIDE 9000 12.4 14.9 83 12.9 16.3 79
TRIPLE PEAK 8500 12.1 14.2 85 13.8 19.0 73
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Basin wide percent of average 83 74
LOWER GREEN RIVER
HAMS FORK 7840 4.2 6.4 66 4.9 8.2 60
HEWINTA 9500 3.3 5.2 63 6.2 7.4 84
HICKERSON PARK 9150 2.3 3.0 77 5.1 5.4 94
HOLE-IN-ROCK 9150 3.0 2.7 111 5.6 5.4 104
INDIAN CREEK 9425 11.0 15.0 73 9.7 15.4 63
KELLEY R.S. 8180 6.2 8.7 71 7.9 11.5 69
STEEL CREEK PARK 10100 5.1 8.6 59 7.4 7.7 96
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Basin wide percent of average 71 77
UPPER BEAR RIVER
BUG LAKE 7950 4.9 11.0 45 7.0 11.1 63
HAYDEN FORK 9400 5.0 8.8 57 8.3 10.3 81
KELLEY R.S. 8180 6.2 8.7 71 7.9 11.5 69
LILY LAKE 9050 5.1 7.3 70 8.1 8.3 98
MONTE CRISTO 8960 8.4 14.5 58 11.2 14.3 78
SALT RIVER SUMMIT 7600 5.5 7.1 77 7.9 10.3 77
TRIAL LAKE 9960 5.1 13.7 37 6.5 13.0 50
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Basin wide percent of average 57 72
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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.