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 WEDNESDAY: JANUARY 27 , 1999
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 15.6 11.8 132 16.3 15.5 105
COTTONWOOD CREEK 7600 13.9 13.3 105 17.0 16.4 104
GRANITE CREEK 6770 12.3 11.6 106 14.4 16.3 88
GRASSY LAKE 7265 26.9 21.7 124 27.3 25.1 109
GROS VENTRE SUMMIT 8775 -M 10.0 * -M 11.0 *
LEWIS LAKE DIVIDE 7860 25.3 21.4 118 26.1 25.5 102
PHILLIPS BENCH 8200 19.5 18.2 107 19.5 20.2 97
SALT RIVER SUMMIT 7600 8.7 8.4 104 11.0 11.7 94
SNAKE RIVER STATION 6920 14.6 11.7 125 17.8 17.7 101
SPRING CREEK DIVIDE 9000 16.7 17.2 97 17.1 18.4 93
THUMB DIVIDE 7980 -M 10.8 * -M 14.5 *
TOGWOTEE PASS 9580 -M 16.0 * 19.5 19.1 102
TWO OCEAN PLATEAU 9360 23.9 17.4 137 20.8 21.4 97
WILLOW CREEK 8450 19.5 19.8 98 24.3 21.6 112
----- -----
Basin wide percent of average 114 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.7 15.3 122 16.9 11.5 147
BLACK BEAR 7950 31.1 23.1 135 -M 25.0 *
CANYON 7940 12.2 7.9 154 13.0 9.4 138
FISHER CREEK 9100 27.2 22.9 119 23.7 23.2 102
MADISON PLATEAU 7750 -M 15.2 * 19.6 16.4 120
NORTHEAST ENTRANCE 7350 8.6 6.0 143 10.5 7.9 133
PARKER PEAK 9400 16.4 13.7 120 -M 10.0 *
SYLVAN LAKE 8420 18.6 14.3 130 20.9 12.7 165
THUMB DIVIDE 7980 -M 10.8 * -M 14.5 *
TWO OCEAN PLATEAU 9360 23.9 17.4 137 20.8 21.4 97
WHISKEY CREEK 6800 13.4 10.6 126 15.4 13.6 113
WHITE MILL 8700 18.3 16.0 114 16.8 18.3 92
WOLVERINE 7650 11.7 7.5 156 9.9 8.4 118
----- -----
Basin wide percent of average 129 117
WIND RIVER
BURROUGHS CREEK 8750 11.8 9.9 119 12.8 10.8 119
COLD SPRINGS 9630 6.4 5.6 114 8.1 6.7 121
DEER PARK 9700 10.1 -M * 13.7 -M *
HOBBS PARK 10100 10.4 9.7 107 10.3 8.8 117
LITTLE WARM 9620 -M 6.9 * -M 8.5 *
SOUTH PASS 9040 11.1 10.9 102 12.5 10.3 121
ST. LAWRENCE ALT 8620 4.5 4.6 98 7.2 6.1 118
TOGWOTEE PASS 9580 -M 16.0 * 19.5 19.1 102
TOWNSEND CREEK 8700 5.5 5.9 93 8.0 7.5 107
----- -----
Basin wide percent of average 107 113
BIGHORN BASIN
BALD MTN. 9375 14.0 13.3 105 13.1 11.2 117
BEAR TRAP MEADOW 7900 4.5 4.6 98 7.0 5.2 135
BLACKWATER 9780 20.7 13.4 154 18.1 11.7 155
BONE SPRINGS DIV 9350 11.0 10.2 108 11.2 9.0 124
EVENING STAR 9200 23.7 17.1 139 24.6 14.6 168
GRAVE SPRINGS 8550 4.8 5.9 81 7.7 6.2 124
KIRWIN 9550 8.3 6.4 130 9.6 6.5 148
MARQUETTE 8760 6.0 4.9 122 6.8 5.6 121
MIDDLE POWDER 7760 4.9 7.5 65 10.9 7.5 145
OWL CREEK 8975 4.0 2.7 148 4.9 3.6 136
POWDER RIVER PASS 9480 8.4 6.7 125 10.4 7.4 141
SHELL CREEK 9580 12.1 9.8 123 10.9 8.5 128
SYLVAN LAKE 8420 18.6 14.3 130 20.9 12.7 165
SYLVAN ROAD 8120 12.4 8.1 153 14.3 10.6 135
TIMBER CREEK 7950 3.8 3.4 112 5.5 4.1 134
YOUNTS PEAK 8350 14.9 11.7 127 13.2 10.8 122
----- -----
Basin wide percent of average 123 140
SHOSHONE RIVER
BLACKWATER 9780 20.7 13.4 154 18.1 11.7 155
EVENING STAR 9200 23.7 17.1 139 24.6 14.6 168
KIRWIN 9550 8.3 6.4 130 9.6 6.5 148
MARQUETTE 8760 6.0 4.9 122 6.8 5.6 121
SYLVAN LAKE 8420 18.6 14.3 130 20.9 12.7 165
SYLVAN ROAD 8120 12.4 8.1 153 14.3 10.6 135
YOUNTS PEAK 8350 14.9 11.7 127 13.2 10.8 122
----- -----
Basin wide percent of average 138 148
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.5 4.6 98 7.0 5.2 135
BIG GOOSE 7990 3.8 -M * 6.8 -M *
BONE SPRINGS DIV 9350 11.0 10.2 108 11.2 9.0 124
BURGESS JUNCTION 7880 5.4 7.3 74 7.3 6.9 106
CLOUD PEAK RESERVOIR 9860 9.4 7.6 124 7.6 7.8 97
DOME LAKE 8880 5.6 8.6 65 7.4 8.4 88
GRAVE SPRINGS 8550 4.8 5.9 81 7.7 6.2 124
HANSEN SAWMILL 8760 3.6 4.4 82 5.8 4.8 121
MIDDLE POWDER 7760 4.9 7.5 65 10.9 7.5 145
POWDER RIVER PASS 9480 8.4 6.7 125 10.4 7.4 141
SUCKER CREEK 8880 6.8 7.1 96 9.0 8.3 108
TIE CREEK 6870 2.4 -M * 5.9 6.6 89
----- -----
Basin wide percent of average 92 115
BELLE FOURCHE
BLIND PARK 6890 5.3 6.9 77 12.3 5.9 208
NORTH RAPID CREEK 6130 4.0 -M * 10.6 -M *
WARREN PEAK 6520 5.9 6.9 86 10.8 5.0 216
----- -----
Basin wide percent of average 81 212
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.5 14.9 91 15.0 15.5 97
DIVIDE PEAK 8800 12.6 12.7 99 18.0 15.4 117
ELK RIVER 8700 -M 11.8 * 15.9 11.9 134
JOE WRIGHT 10120 14.3 13.4 107 19.4 15.7 124
NORTH FRENCH CREEK 10100 19.6 15.3 128 20.1 14.4 140
OLD BATTLE 10000 18.0 19.6 92 24.0 18.6 129
SOUTH BRUSH CREEK 8400 5.8 6.7 87 14.5 10.6 137
TOWER 10500 -M 28.4 * -M 22.9 *
WEBBER SPRINGS 9200 12.7 16.6 77 17.6 16.1 109
WILLOW CREEK PASS 9540 7.7 7.1 108 9.1 7.5 121
----- -----
Basin wide percent of average 98 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.4 15.4 87 15.7 11.5 137
CASPER MTN. 7900 6.6 9.0 73 12.0 8.4 143
DEADMAN HILL 10220 -M 10.6 * 13.4 9.8 137
DEER PARK 9700 10.1 -M * 13.7 -M *
LAPRELE CREEK 8320 3.1 6.3 49 9.7 7.2 135
RENO HILL 8400 8.6 8.0 108 12.9 11.1 116
ROACH 9700 12.1 10.5 115 14.9 13.6 110
SAND LAKE 10080 21.6 20.3 106 20.4 12.4 165
SOUTH PASS 9040 11.1 10.9 102 12.5 10.3 121
WINDY PEAK 7840 3.6 4.3 84 8.9 5.6 159
----- -----
Basin wide percent of average 95 134
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.3 6.9 106 12.0 10.4 115
DIVIDE PEAK 8800 12.6 12.7 99 18.0 15.4 117
OLD BATTLE 10000 18.0 19.6 92 24.0 18.6 129
SANDSTONE RS 8150 7.9 8.8 90 14.4 12.6 114
WHISKEY PARK 8950 16.5 17.5 94 20.6 18.7 110
----- -----
Basin wide percent of average 95 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.3 9.1 113 9.7 11.3 86
BLIND BULL SUM 8650 17.8 18.1 98 14.8 15.8 94
EAST RIM DIVIDE 7930 8.5 8.7 98 8.9 10.5 85
ELKHART PARK G.S. 9400 8.6 8.5 101 9.2 11.1 83
GROS VENTRE SUMMIT 8775 -M 10.0 * -M 11.0 *
KENDALL R.S. 7740 9.2 9.4 98 9.8 10.7 92
LOOMIS PARK 8240 9.9 10.9 91 12.9 13.1 98
NEW FORK LAKE 8340 7.5 7.4 101 7.8 10.1 77
SNIDER BASIN 8250 8.9 9.3 96 9.4 10.5 90
SPRING CREEK DIVIDE 9000 16.7 17.2 97 17.1 18.4 93
TRIPLE PEAK 8500 16.0 16.4 98 17.8 21.6 82
----- -----
Basin wide percent of average 99 88
LOWER GREEN RIVER
HAMS FORK 7840 7.3 7.6 96 7.0 9.3 75
HEWINTA 9500 5.8 5.9 98 8.8 8.1 109
HICKERSON PARK 9150 3.8 3.4 112 6.4 5.8 110
HOLE-IN-ROCK 9150 4.1 3.1 132 6.8 5.8 117
INDIAN CREEK 9425 15.9 17.0 94 13.8 17.4 79
KELLEY R.S. 8180 9.7 10.1 96 11.4 13.0 88
STEEL CREEK PARK 10100 8.6 9.4 91 10.5 8.3 127
----- -----
Basin wide percent of average 98 96
UPPER BEAR RIVER
BUG LAKE 7950 10.1 12.3 82 11.3 12.3 92
HAYDEN FORK 9400 8.4 9.8 86 11.9 11.4 104
KELLEY R.S. 8180 9.7 10.1 96 11.4 13.0 88
LILY LAKE 9050 8.0 7.8 103 11.1 9.1 122
MONTE CRISTO 8960 14.4 16.4 88 16.0 15.8 101
SALT RIVER SUMMIT 7600 8.7 8.4 104 11.0 11.7 94
TRIAL LAKE 9960 10.7 15.2 70 11.8 14.5 81
----- -----
Basin wide percent of average 88 96
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.