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 THURSDAY: JANUARY 28 , 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 15.4 11.9 129 16.3 15.6 104
COTTONWOOD CREEK 7600 13.9 13.4 104 16.9 16.6 102
GRANITE CREEK 6770 12.2 11.7 104 14.3 16.5 87
GRASSY LAKE 7265 27.0 21.9 123 27.3 25.3 108
GROS VENTRE SUMMIT 8775 9.2 10.2 90 9.5 11.1 86
LEWIS LAKE DIVIDE 7860 25.3 21.7 117 25.9 25.8 100
PHILLIPS BENCH 8200 19.4 18.4 105 19.4 20.4 95
SALT RIVER SUMMIT 7600 8.6 8.5 101 10.8 11.8 92
SNAKE RIVER STATION 6920 14.6 11.8 124 17.9 17.9 100
SPRING CREEK DIVIDE 9000 16.5 17.4 95 17.0 18.6 91
THUMB DIVIDE 7980 -M 10.9 * -M 14.7 *
TOGWOTEE PASS 9580 -M 16.2 * 19.5 19.3 101
TWO OCEAN PLATEAU 9360 23.8 17.6 135 20.8 21.6 96
WILLOW CREEK 8450 19.4 20.0 97 24.3 21.9 111
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Basin wide percent of average 111 99
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.6 15.5 120 16.7 11.6 144
BLACK BEAR 7950 31.2 23.4 133 -M 25.3 *
CANYON 7940 12.1 7.9 153 12.9 9.5 136
FISHER CREEK 9100 27.2 23.2 117 23.5 23.5 100
MADISON PLATEAU 7750 -M 15.4 * 19.6 16.6 118
NORTHEAST ENTRANCE 7350 8.5 6.1 139 10.4 8.0 130
PARKER PEAK 9400 16.3 13.9 117 -M 10.1 *
SYLVAN LAKE 8420 18.6 14.4 129 20.9 12.8 163
THUMB DIVIDE 7980 -M 10.9 * -M 14.7 *
TWO OCEAN PLATEAU 9360 23.8 17.6 135 20.8 21.6 96
WHISKEY CREEK 6800 13.4 10.7 125 15.9 13.8 115
WHITE MILL 8700 18.3 16.2 113 16.6 18.5 90
WOLVERINE 7650 11.6 7.6 153 9.8 8.5 115
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Basin wide percent of average 128 116
WIND RIVER
BURROUGHS CREEK 8750 11.7 10.0 117 12.7 10.9 117
COLD SPRINGS 9630 6.4 5.6 114 8.0 6.7 119
DEER PARK 9700 10.2 -M * 13.8 -M *
HOBBS PARK 10100 10.2 9.7 105 10.3 8.9 116
LITTLE WARM 9620 8.5 6.9 123 9.5 8.6 110
SOUTH PASS 9040 11.1 10.9 102 12.5 10.4 120
ST. LAWRENCE ALT 8620 4.4 4.6 96 7.3 6.1 120
TOGWOTEE PASS 9580 -M 16.2 * 19.5 19.3 101
TOWNSEND CREEK 8700 5.2 6.0 87 7.7 7.5 103
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Basin wide percent of average 107 112
BIGHORN BASIN
BALD MTN. 9375 14.0 13.4 104 12.8 11.3 113
BEAR TRAP MEADOW 7900 4.6 4.7 98 7.0 5.3 132
BLACKWATER 9780 20.6 13.5 153 18.1 11.8 153
BONE SPRINGS DIV 9350 -M 10.3 * 10.8 9.1 119
EVENING STAR 9200 23.7 17.2 138 24.5 14.7 167
GRAVE SPRINGS 8550 4.7 5.9 80 7.7 6.2 124
KIRWIN 9550 8.1 6.4 127 9.4 6.6 142
MARQUETTE 8760 5.9 5.0 118 6.6 5.7 116
MIDDLE POWDER 7760 4.8 7.6 63 10.8 7.6 142
OWL CREEK 8975 3.9 2.7 144 4.5 3.7 122
POWDER RIVER PASS 9480 8.2 6.8 121 10.4 7.5 139
SHELL CREEK 9580 12.0 9.9 121 10.9 8.6 127
SYLVAN LAKE 8420 18.6 14.4 129 20.9 12.8 163
SYLVAN ROAD 8120 12.4 8.1 153 14.4 10.7 135
TIMBER CREEK 7950 3.7 3.5 106 5.6 4.1 137
YOUNTS PEAK 8350 14.7 11.8 125 12.9 10.9 118
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Basin wide percent of average 122 137
SHOSHONE RIVER
BLACKWATER 9780 20.6 13.5 153 18.1 11.8 153
EVENING STAR 9200 23.7 17.2 138 24.5 14.7 167
KIRWIN 9550 8.1 6.4 127 9.4 6.6 142
MARQUETTE 8760 5.9 5.0 118 6.6 5.7 116
SYLVAN LAKE 8420 18.6 14.4 129 20.9 12.8 163
SYLVAN ROAD 8120 12.4 8.1 153 14.4 10.7 135
YOUNTS PEAK 8350 14.7 11.8 125 12.9 10.9 118
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Basin wide percent of average 136 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.6 4.7 98 7.0 5.3 132
BIG GOOSE 7990 3.6 -M * 6.6 -M *
BONE SPRINGS DIV 9350 -M 10.3 * 10.8 9.1 119
BURGESS JUNCTION 7880 5.1 7.3 70 7.2 6.9 104
CLOUD PEAK RESERVOIR 9860 9.4 7.7 122 7.8 7.8 100
DOME LAKE 8880 5.4 8.7 62 7.3 8.5 86
GRAVE SPRINGS 8550 4.7 5.9 80 7.7 6.2 124
HANSEN SAWMILL 8760 -M 4.4 * 5.8 4.9 118
MIDDLE POWDER 7760 4.8 7.6 63 10.8 7.6 142
POWDER RIVER PASS 9480 8.2 6.8 121 10.4 7.5 139
SUCKER CREEK 8880 6.6 7.2 92 8.6 8.3 104
TIE CREEK 6870 2.2 -M * 5.9 6.6 89
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Basin wide percent of average 87 113
BELLE FOURCHE
BLIND PARK 6890 5.2 7.0 74 12.2 5.9 207
NORTH RAPID CREEK 6130 3.9 -M * 10.4 -M *
WARREN PEAK 6520 5.9 7.0 84 10.8 5.0 216
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Basin wide percent of average 79 211
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.6 15.1 90 14.9 15.7 95
DIVIDE PEAK 8800 12.8 12.9 99 18.1 15.6 116
ELK RIVER 8700 -M 12.0 * 16.0 12.0 133
JOE WRIGHT 10120 14.3 13.6 105 19.4 15.9 122
NORTH FRENCH CREEK 10100 19.7 15.4 128 20.1 14.6 138
OLD BATTLE 10000 18.3 19.8 92 24.3 18.7 130
SOUTH BRUSH CREEK 8400 5.8 6.8 85 14.5 10.6 137
TOWER 10500 27.5 28.7 96 26.5 23.1 115
WEBBER SPRINGS 9200 12.8 16.8 76 17.7 16.2 109
WILLOW CREEK PASS 9540 7.7 7.1 108 8.8 7.6 116
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Basin wide percent of average 97 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.4 15.5 86 15.7 11.6 135
CASPER MTN. 7900 6.7 9.1 74 12.2 8.4 145
DEADMAN HILL 10220 -M 10.7 * 13.3 9.9 134
DEER PARK 9700 10.2 -M * 13.8 -M *
LAPRELE CREEK 8320 3.1 6.4 48 9.8 7.3 134
RENO HILL 8400 8.8 8.1 109 13.1 11.2 117
ROACH 9700 12.1 10.6 114 14.8 13.7 108
SAND LAKE 10080 21.7 20.4 106 20.5 12.5 164
SOUTH PASS 9040 11.1 10.9 102 12.5 10.4 120
WINDY PEAK 7840 3.6 4.3 84 9.1 5.7 160
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Basin wide percent of average 94 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.4 7.0 106 12.1 10.5 115
DIVIDE PEAK 8800 12.8 12.9 99 18.1 15.6 116
OLD BATTLE 10000 18.3 19.8 92 24.3 18.7 130
SANDSTONE RS 8150 8.0 8.9 90 14.5 12.7 114
WHISKEY PARK 8950 16.7 17.7 94 20.6 18.9 109
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Basin wide percent of average 95 117
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.4 9.2 113 9.7 11.4 85
BLIND BULL SUM 8650 17.7 18.2 97 14.7 16.0 92
EAST RIM DIVIDE 7930 8.4 8.9 94 8.9 10.6 84
ELKHART PARK G.S. 9400 8.5 8.5 100 9.2 11.2 82
GROS VENTRE SUMMIT 8775 9.2 10.2 90 9.5 11.1 86
KENDALL R.S. 7740 9.1 9.5 96 9.6 10.8 89
LOOMIS PARK 8240 9.9 11.1 89 12.7 13.2 96
NEW FORK LAKE 8340 7.5 7.5 100 7.6 10.2 75
SNIDER BASIN 8250 8.8 9.4 94 9.3 10.6 88
SPRING CREEK DIVIDE 9000 16.5 17.4 95 17.0 18.6 91
TRIPLE PEAK 8500 16.0 16.6 96 17.8 21.8 82
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Basin wide percent of average 96 87
LOWER GREEN RIVER
HAMS FORK 7840 7.2 7.7 94 7.0 9.4 74
HEWINTA 9500 5.8 5.9 98 9.0 8.1 111
HICKERSON PARK 9150 3.8 3.4 112 6.5 5.8 112
HOLE-IN-ROCK 9150 4.1 3.1 132 6.9 5.8 119
INDIAN CREEK 9425 15.9 17.2 92 13.6 17.6 77
KELLEY R.S. 8180 9.6 10.2 94 11.2 13.1 85
STEEL CREEK PARK 10100 8.4 9.5 88 10.5 8.4 125
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Basin wide percent of average 96 95
UPPER BEAR RIVER
BUG LAKE 7950 10.2 12.4 82 11.2 12.4 90
HAYDEN FORK 9400 8.5 9.8 87 11.6 11.5 101
KELLEY R.S. 8180 9.6 10.2 94 11.2 13.1 85
LILY LAKE 9050 8.1 7.9 103 11.3 9.2 123
MONTE CRISTO 8960 14.4 16.6 87 16.0 16.0 100
SALT RIVER SUMMIT 7600 8.6 8.5 101 10.8 11.8 92
TRIAL LAKE 9960 10.7 15.3 70 11.9 14.7 81
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Basin wide percent of average 87 95
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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.