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: FEBRUARY 4 , 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 16.2 12.8 127 16.6 16.7 99
COTTONWOOD CREEK 7600 14.9 14.5 103 18.1 17.8 102
GRANITE CREEK 6770 12.9 12.6 102 15.0 17.6 85
GRASSY LAKE 7265 28.6 24.5 117 28.8 27.1 106
GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.8 11.9 82
LEWIS LAKE DIVIDE 7860 26.8 23.6 114 26.8 27.6 97
PHILLIPS BENCH 8200 20.8 20.0 104 20.5 21.8 94
SALT RIVER SUMMIT 7600 9.1 9.3 98 11.4 12.6 90
SNAKE RIVER STATION 6920 15.0 12.9 116 18.4 19.1 96
SPRING CREEK DIVIDE 9000 17.5 18.7 94 17.9 19.9 90
THUMB DIVIDE 7980 15.3 11.7 131 15.0 15.7 96
TOGWOTEE PASS 9580 -M 17.3 * 20.3 20.6 99
TWO OCEAN PLATEAU 9360 24.6 18.8 131 21.3 23.1 92
WILLOW CREEK 8450 20.7 21.6 96 24.8 23.4 106
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Basin wide percent of average 110 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.2 16.4 117 17.2 12.4 139
BLACK BEAR 7950 33.1 25.3 131 -M 27.3 *
CANYON 7940 12.5 8.6 145 13.4 10.1 133
FISHER CREEK 9100 28.4 24.9 114 23.9 25.3 94
MADISON PLATEAU 7750 -M 16.6 * 20.7 17.8 116
NORTHEAST ENTRANCE 7350 9.0 6.6 136 10.7 8.5 126
PARKER PEAK 9400 16.9 14.7 115 -M 10.8 *
SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157
THUMB DIVIDE 7980 15.3 11.7 131 15.0 15.7 96
TWO OCEAN PLATEAU 9360 24.6 18.8 131 21.3 23.1 92
WHISKEY CREEK 6800 13.9 11.5 121 16.6 14.8 112
WHITE MILL 8700 18.9 17.3 109 17.1 19.8 86
WOLVERINE 7650 11.0 8.2 134 10.1 9.0 112
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Basin wide percent of average 124 110
WIND RIVER
BURROUGHS CREEK 8750 12.1 10.7 113 13.2 11.6 114
COLD SPRINGS 9630 6.6 5.9 112 8.4 7.1 118
DEER PARK 9700 9.8 -M * 14.0 -M *
HOBBS PARK 10100 10.9 10.2 107 10.6 9.4 113
LITTLE WARM 9620 9.1 7.4 123 10.1 9.1 111
SOUTH PASS 9040 11.3 11.6 97 12.7 11.1 114
ST. LAWRENCE ALT 8620 4.5 5.0 90 7.3 6.5 112
TOGWOTEE PASS 9580 -M 17.3 * 20.3 20.6 99
TOWNSEND CREEK 8700 5.7 6.4 89 8.2 8.0 102
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Basin wide percent of average 105 109
BIGHORN BASIN
BALD MTN. 9375 14.1 14.2 99 13.2 12.0 110
BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125
BLACKWATER 9780 21.5 14.4 149 18.7 12.5 150
BONE SPRINGS DIV 9350 11.1 10.9 102 11.2 9.6 117
EVENING STAR 9200 24.8 18.4 135 25.4 15.7 162
GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120
KIRWIN 9550 8.3 6.8 122 9.6 7.0 137
MARQUETTE 8760 6.1 5.3 115 6.8 5.9 115
MIDDLE POWDER 7760 5.0 8.0 62 11.0 8.0 138
OWL CREEK 8975 4.2 2.9 145 4.9 3.9 126
POWDER RIVER PASS 9480 8.4 7.2 117 10.5 8.0 131
SHELL CREEK 9580 12.2 10.5 116 10.9 9.1 120
SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157
SYLVAN ROAD 8120 12.6 8.8 143 14.6 11.4 128
TIMBER CREEK 7950 3.7 3.8 97 5.6 4.3 130
YOUNTS PEAK 8350 15.4 12.5 123 13.5 11.6 116
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Basin wide percent of average 117 133
SHOSHONE RIVER
BLACKWATER 9780 21.5 14.4 149 18.7 12.5 150
EVENING STAR 9200 24.8 18.4 135 25.4 15.7 162
KIRWIN 9550 8.3 6.8 122 9.6 7.0 137
MARQUETTE 8760 6.1 5.3 115 6.8 5.9 115
SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157
SYLVAN ROAD 8120 12.6 8.8 143 14.6 11.4 128
YOUNTS PEAK 8350 15.4 12.5 123 13.5 11.6 116
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Basin wide percent of average 132 141
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125
BIG GOOSE 7990 3.9 -M * 6.8 -M *
BONE SPRINGS DIV 9350 11.1 10.9 102 11.2 9.6 117
BURGESS JUNCTION 7880 5.5 7.8 71 7.4 7.3 101
CLOUD PEAK RESERVOIR 9860 9.9 8.3 119 8.6 8.3 104
DOME LAKE 8880 5.8 9.2 63 7.6 8.9 85
GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120
HANSEN SAWMILL 8760 3.7 4.7 79 5.9 5.1 116
MIDDLE POWDER 7760 5.0 8.0 62 11.0 8.0 138
POWDER RIVER PASS 9480 8.4 7.2 117 10.5 8.0 131
SUCKER CREEK 8880 6.8 7.8 87 8.9 8.8 101
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 5.3 7.4 72 12.3 6.3 195
NORTH RAPID CREEK 6130 4.1 -M * 10.6 -M *
WARREN PEAK 6520 5.9 7.4 80 10.8 5.3 204
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Basin wide percent of average 76 199
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.1 16.4 86 15.4 16.8 92
DIVIDE PEAK 8800 12.8 13.7 93 18.4 16.4 112
ELK RIVER 8700 -M 13.0 * 16.6 12.8 130
JOE WRIGHT 10120 14.5 14.4 101 20.0 16.9 118
NORTH FRENCH CREEK 10100 20.3 16.5 123 20.1 15.5 130
OLD BATTLE 10000 18.5 21.1 88 24.6 19.9 124
SOUTH BRUSH CREEK 8400 5.0 7.3 68 14.9 10.9 137
TOWER 10500 28.7 30.8 93 26.9 24.7 109
WEBBER SPRINGS 9200 12.7 18.0 71 18.1 17.0 106
WILLOW CREEK PASS 9540 8.1 7.5 108 9.2 8.0 115
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Basin wide percent of average 92 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.2 16.4 87 16.2 12.5 130
CASPER MTN. 7900 6.9 9.7 71 12.4 8.8 141
DEADMAN HILL 10220 -M 11.4 * 13.7 10.6 129
DEER PARK 9700 9.8 -M * 14.0 -M *
LAPRELE CREEK 8320 2.7 6.8 40 10.1 7.8 129
RENO HILL 8400 8.9 8.6 103 13.3 11.7 114
ROACH 9700 12.8 11.3 113 15.2 14.5 105
SAND LAKE 10080 22.9 21.8 105 20.8 13.4 155
SOUTH PASS 9040 11.3 11.6 97 12.7 11.1 114
WINDY PEAK 7840 3.7 4.7 79 9.4 6.0 157
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Basin wide percent of average 92 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.7 7.6 114 12.7 11.1 114
DIVIDE PEAK 8800 12.8 13.7 93 18.4 16.4 112
OLD BATTLE 10000 18.5 21.1 88 24.6 19.9 124
SANDSTONE RS 8150 8.3 9.6 86 14.9 13.5 110
WHISKEY PARK 8950 17.2 19.0 91 20.8 20.3 102
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Basin wide percent of average 92 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.9 9.8 111 10.1 12.2 83
BLIND BULL SUM 8650 18.8 19.6 96 15.3 17.3 88
EAST RIM DIVIDE 7930 9.1 9.6 95 9.4 11.4 82
ELKHART PARK G.S. 9400 9.0 9.2 98 9.6 12.0 80
GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.8 11.9 82
KENDALL R.S. 7740 9.8 10.2 96 10.4 11.6 90
LOOMIS PARK 8240 -M 12.0 * 13.6 14.1 96
NEW FORK LAKE 8340 8.2 8.1 101 8.3 10.8 77
SNIDER BASIN 8250 9.4 10.2 92 9.9 11.4 87
SPRING CREEK DIVIDE 9000 17.5 18.7 94 17.9 19.9 90
TRIPLE PEAK 8500 16.8 17.9 94 17.9 23.3 77
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Basin wide percent of average 96 85
LOWER GREEN RIVER
HAMS FORK 7840 7.6 8.4 90 7.2 10.0 72
HEWINTA 9500 6.1 6.4 95 9.2 8.6 107
HICKERSON PARK 9150 3.9 3.7 105 6.6 6.1 108
HOLE-IN-ROCK 9150 4.5 3.4 132 7.1 6.1 116
INDIAN CREEK 9425 16.9 18.5 91 14.3 18.8 76
KELLEY R.S. 8180 10.0 11.1 90 11.7 14.0 84
STEEL CREEK PARK 10100 8.9 10.0 89 10.9 8.8 124
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Basin wide percent of average 94 93
UPPER BEAR RIVER
BUG LAKE 7950 11.5 13.3 86 11.5 13.1 88
HAYDEN FORK 9400 8.6 10.6 81 12.6 12.3 102
KELLEY R.S. 8180 10.0 11.1 90 11.7 14.0 84
LILY LAKE 9050 8.2 8.4 98 11.8 9.7 122
MONTE CRISTO 8960 15.0 17.9 84 16.5 17.0 97
SALT RIVER SUMMIT 7600 9.1 9.3 98 11.4 12.6 90
TRIAL LAKE 9960 10.9 16.3 67 12.1 15.7 77
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Basin wide percent of average 84 93
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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.