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 FRIDAY: FEBRUARY 5 , 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 16.4 13.0 126 16.7 16.8 99
COTTONWOOD CREEK 7600 15.2 14.7 103 18.2 18.0 101
GRANITE CREEK 6770 13.2 12.8 103 15.3 17.8 86
GRASSY LAKE 7265 28.6 24.9 115 28.9 27.3 106
GROS VENTRE SUMMIT 8775 9.8 10.9 90 9.8 12.0 82
LEWIS LAKE DIVIDE 7860 27.0 23.8 113 27.1 27.8 97
PHILLIPS BENCH 8200 21.2 20.1 105 20.7 22.0 94
SALT RIVER SUMMIT 7600 9.5 9.5 100 11.9 12.7 94
SNAKE RIVER STATION 6920 15.1 13.0 116 18.5 19.2 96
SPRING CREEK DIVIDE 9000 18.1 18.9 96 18.4 20.1 92
THUMB DIVIDE 7980 15.4 11.8 131 15.2 15.8 96
TOGWOTEE PASS 9580 -M 17.5 * 20.5 20.8 99
TWO OCEAN PLATEAU 9360 25.1 18.9 133 21.5 23.2 93
WILLOW CREEK 8450 21.1 21.8 97 24.9 23.6 106
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Basin wide percent of average 110 97
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.4 16.6 117 17.4 12.5 139
BLACK BEAR 7950 33.1 25.6 129 -M 27.5 *
CANYON 7940 12.6 8.6 147 13.5 10.2 132
FISHER CREEK 9100 28.6 25.1 114 24.0 25.5 94
MADISON PLATEAU 7750 -M 16.8 * 20.8 17.9 116
NORTHEAST ENTRANCE 7350 9.0 6.7 134 10.8 8.6 126
PARKER PEAK 9400 17.1 14.8 116 -M 10.9 *
SYLVAN LAKE 8420 19.2 15.4 125 21.3 13.6 157
THUMB DIVIDE 7980 15.4 11.8 131 15.2 15.8 96
TWO OCEAN PLATEAU 9360 25.1 18.9 133 21.5 23.2 93
WHISKEY CREEK 6800 14.0 11.7 120 16.7 14.9 112
WHITE MILL 8700 19.0 17.5 109 17.2 19.9 86
WOLVERINE 7650 11.1 8.2 135 10.1 9.1 111
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Basin wide percent of average 124 110
WIND RIVER
BURROUGHS CREEK 8750 12.3 10.8 114 13.3 11.7 114
COLD SPRINGS 9630 6.7 6.0 112 8.5 7.1 120
DEER PARK 9700 10.1 -M * 14.3 -M *
HOBBS PARK 10100 11.2 10.3 109 10.7 9.5 113
LITTLE WARM 9620 9.2 7.5 123 10.3 9.2 112
SOUTH PASS 9040 11.6 11.7 99 13.0 11.2 116
ST. LAWRENCE ALT 8620 4.8 5.0 96 7.5 6.5 115
TOGWOTEE PASS 9580 -M 17.5 * 20.5 20.8 99
TOWNSEND CREEK 8700 5.8 6.5 89 8.4 8.1 104
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Basin wide percent of average 107 110
BIGHORN BASIN
BALD MTN. 9375 14.2 14.3 99 13.4 12.0 112
BEAR TRAP MEADOW 7900 4.4 5.0 88 6.9 5.5 125
BLACKWATER 9780 21.6 14.6 148 18.8 12.6 149
BONE SPRINGS DIV 9350 11.3 11.0 103 11.5 9.7 119
EVENING STAR 9200 24.7 18.5 134 25.5 15.8 161
GRAVE SPRINGS 8550 4.8 6.3 76 7.8 6.5 120
KIRWIN 9550 8.4 6.8 124 9.9 7.1 139
MARQUETTE 8760 6.2 5.3 117 7.0 6.0 117
MIDDLE POWDER 7760 5.1 8.1 63 11.1 8.0 139
OWL CREEK 8975 4.2 2.9 145 5.0 4.0 125
POWDER RIVER PASS 9480 8.5 7.3 116 10.6 8.0 132
SHELL CREEK 9580 12.3 10.6 116 11.0 9.1 121
SYLVAN LAKE 8420 19.2 15.4 125 21.3 13.6 157
SYLVAN ROAD 8120 12.6 8.9 142 14.6 11.5 127
TIMBER CREEK 7950 3.8 3.8 100 5.5 4.3 128
YOUNTS PEAK 8350 15.5 12.6 123 13.7 11.7 117
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Basin wide percent of average 117 133
SHOSHONE RIVER
BLACKWATER 9780 21.6 14.6 148 18.8 12.6 149
EVENING STAR 9200 24.7 18.5 134 25.5 15.8 161
KIRWIN 9550 8.4 6.8 124 9.9 7.1 139
MARQUETTE 8760 6.2 5.3 117 7.0 6.0 117
SYLVAN LAKE 8420 19.2 15.4 125 21.3 13.6 157
SYLVAN ROAD 8120 12.6 8.9 142 14.6 11.5 127
YOUNTS PEAK 8350 15.5 12.6 123 13.7 11.7 117
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Basin wide percent of average 132 142
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.4 5.0 88 6.9 5.5 125
BIG GOOSE 7990 4.0 -M * 6.8 -M *
BONE SPRINGS DIV 9350 11.3 11.0 103 11.5 9.7 119
BURGESS JUNCTION 7880 5.6 7.9 71 7.5 7.3 103
CLOUD PEAK RESERVOIR 9860 10.0 8.5 118 8.7 8.4 104
DOME LAKE 8880 5.8 9.3 62 7.6 8.9 85
GRAVE SPRINGS 8550 4.8 6.3 76 7.8 6.5 120
HANSEN SAWMILL 8760 3.8 4.8 79 5.9 5.1 116
MIDDLE POWDER 7760 5.1 8.1 63 11.1 8.0 139
POWDER RIVER PASS 9480 8.5 7.3 116 10.6 8.0 132
SUCKER CREEK 8880 6.9 7.8 88 9.1 8.9 102
TIE CREEK 6870 2.3 -M * 6.0 7.0 86
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Basin wide percent of average 87 111
BELLE FOURCHE
BLIND PARK 6890 5.4 7.5 72 12.5 6.3 198
NORTH RAPID CREEK 6130 4.1 -M * 10.8 -M *
WARREN PEAK 6520 6.0 7.5 80 10.9 5.3 206
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Basin wide percent of average 76 202
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.2 16.5 86 15.8 17.0 93
DIVIDE PEAK 8800 12.9 13.8 93 18.5 16.5 112
ELK RIVER 8700 -M 13.2 * 16.9 12.9 131
JOE WRIGHT 10120 14.6 14.5 101 19.9 17.0 117
NORTH FRENCH CREEK 10100 20.4 16.6 123 20.3 15.6 130
OLD BATTLE 10000 18.7 21.3 88 25.0 20.1 124
SOUTH BRUSH CREEK 8400 5.1 7.4 69 14.9 11.0 135
TOWER 10500 28.9 31.1 93 27.0 24.9 108
WEBBER SPRINGS 9200 12.8 18.1 71 18.3 17.2 106
WILLOW CREEK PASS 9540 8.1 7.6 107 9.5 8.1 117
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Basin wide percent of average 92 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.3 16.5 87 16.3 12.6 129
CASPER MTN. 7900 7.1 9.8 72 12.5 8.9 140
DEADMAN HILL 10220 13.4 11.5 117 13.8 10.7 129
DEER PARK 9700 10.1 -M * 14.3 -M *
LAPRELE CREEK 8320 2.6 6.9 38 10.2 7.8 131
RENO HILL 8400 8.9 8.6 103 13.4 11.9 113
ROACH 9700 12.8 11.4 112 15.1 14.6 103
SAND LAKE 10080 22.9 22.0 104 20.9 13.5 155
SOUTH PASS 9040 11.6 11.7 99 13.0 11.2 116
WINDY PEAK 7840 3.8 4.7 81 9.6 6.1 157
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Basin wide percent of average 94 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.0 7.6 118 12.7 11.1 114
DIVIDE PEAK 8800 12.9 13.8 93 18.5 16.5 112
OLD BATTLE 10000 18.7 21.3 88 25.0 20.1 124
SANDSTONE RS 8150 8.4 9.7 87 14.9 13.6 110
WHISKEY PARK 8950 17.3 19.1 91 21.0 20.4 103
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Basin wide percent of average 93 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 11.3 9.9 114 10.5 12.3 85
BLIND BULL SUM 8650 19.1 19.8 96 15.6 17.4 90
EAST RIM DIVIDE 7930 9.3 9.7 96 9.7 11.5 84
ELKHART PARK G.S. 9400 9.4 9.3 101 9.9 12.1 82
GROS VENTRE SUMMIT 8775 9.8 10.9 90 9.8 12.0 82
KENDALL R.S. 7740 10.1 10.3 98 10.7 11.7 91
LOOMIS PARK 8240 -M 12.1 * 13.9 14.2 98
NEW FORK LAKE 8340 8.5 8.2 104 8.6 10.9 79
SNIDER BASIN 8250 9.9 10.3 96 10.4 11.5 90
SPRING CREEK DIVIDE 9000 18.1 18.9 96 18.4 20.1 92
TRIPLE PEAK 8500 17.1 18.1 94 18.2 23.4 78
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Basin wide percent of average 98 86
LOWER GREEN RIVER
HAMS FORK 7840 8.1 8.5 95 7.4 10.1 73
HEWINTA 9500 6.1 6.5 94 9.2 8.7 106
HICKERSON PARK 9150 3.9 3.7 105 6.7 6.2 108
HOLE-IN-ROCK 9150 4.5 3.4 132 7.2 6.2 116
INDIAN CREEK 9425 17.7 18.7 95 15.0 18.9 79
KELLEY R.S. 8180 10.6 11.2 95 12.3 14.1 87
STEEL CREEK PARK 10100 8.9 10.1 88 11.0 8.8 125
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Basin wide percent of average 96 94
UPPER BEAR RIVER
BUG LAKE 7950 11.9 13.4 89 11.9 13.2 90
HAYDEN FORK 9400 8.6 10.7 80 12.7 12.4 102
KELLEY R.S. 8180 10.6 11.2 95 12.3 14.1 87
LILY LAKE 9050 8.2 8.5 96 11.7 9.8 119
MONTE CRISTO 8960 15.4 18.0 86 16.7 17.1 98
SALT RIVER SUMMIT 7600 9.5 9.5 100 11.9 12.7 94
TRIAL LAKE 9960 11.0 16.5 67 12.1 15.8 77
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Basin wide percent of average 86 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.