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 6 , 1999
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 9.3 8.7 107 11.3 12.0 94
COTTONWOOD CREEK 7600 9.1 9.8 93 12.2 12.8 95
GRANITE CREEK 6770 7.1 8.1 88 9.2 12.7 72
GRASSY LAKE 7265 16.9 15.8 107 18.1 19.5 93
GROS VENTRE SUMMIT 8775 6.4 7.5 85 6.8 8.6 79
LEWIS LAKE DIVIDE 7860 15.1 15.4 98 17.5 19.9 88
PHILLIPS BENCH 8200 12.8 12.9 99 13.3 15.4 86
SALT RIVER SUMMIT 7600 5.1 5.8 88 7.5 9.1 82
SNAKE RIVER STATION 6920 8.4 8.5 99 11.0 13.7 80
SPRING CREEK DIVIDE 9000 11.1 12.7 87 11.7 14.3 82
THUMB DIVIDE 7980 10.3 8.0 129 10.6 11.3 94
TOGWOTEE PASS 9580 -M 12.1 * 14.2 14.8 96
TWO OCEAN PLATEAU 9360 17.1 13.6 126 15.5 16.6 93
WILLOW CREEK 8450 12.4 14.2 87 17.6 16.8 105
----- -----
Basin wide percent of average 100 89
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 12.8 12.3 104 11.7 9.1 129
BLACK BEAR 7950 20.9 17.1 122 19.8 18.7 106
CANYON 7940 8.2 5.8 141 9.3 7.4 126
FISHER CREEK 9100 19.5 17.1 114 17.7 17.4 102
MADISON PLATEAU 7750 -M 11.1 * 13.7 12.6 109
NORTHEAST ENTRANCE 7350 5.8 4.4 132 7.5 6.2 121
PARKER PEAK 9400 12.1 11.2 108 -M 8.1 *
SYLVAN LAKE 8420 12.9 11.5 112 15.4 10.3 150
THUMB DIVIDE 7980 10.3 8.0 129 10.6 11.3 94
TWO OCEAN PLATEAU 9360 17.1 13.6 126 15.5 16.6 93
WHISKEY CREEK 6800 8.7 7.7 113 11.0 10.5 105
WHITE MILL 8700 12.3 12.4 99 11.6 13.8 84
WOLVERINE 7650 8.7 5.7 153 6.8 6.8 100
----- -----
Basin wide percent of average 118 107
WIND RIVER
BURROUGHS CREEK 8750 8.3 7.7 108 9.1 8.6 106
COLD SPRINGS 9630 5.1 4.7 109 6.7 5.7 118
DEER PARK 9700 6.2 -M * 9.3 -M *
HOBBS PARK 10100 8.3 8.1 102 8.6 7.3 118
LITTLE WARM 9620 6.5 5.5 118 7.6 7.0 109
SOUTH PASS 9040 7.1 8.8 81 8.7 8.5 102
ST. LAWRENCE ALT 8620 3.9 3.6 108 6.6 5.2 127
TOGWOTEE PASS 9580 -M 12.1 * 14.2 14.8 96
TOWNSEND CREEK 8700 4.5 4.8 94 7.1 6.1 116
----- -----
Basin wide percent of average 101 109
BIGHORN BASIN
BALD MTN. 9375 10.5 10.8 97 10.0 9.2 109
BEAR TRAP MEADOW 7900 3.4 3.9 87 6.4 4.5 142
BLACKWATER 9780 15.5 10.6 146 13.6 9.3 146
BONE SPRINGS DIV 9350 8.0 8.3 96 8.3 7.3 114
EVENING STAR 9200 16.8 13.8 122 17.5 11.5 152
GRAVE SPRINGS 8550 4.0 4.8 83 7.1 5.3 134
KIRWIN 9550 6.7 5.5 122 7.8 5.5 142
MARQUETTE 8760 5.1 4.1 124 6.3 4.9 129
MIDDLE POWDER 7760 4.0 6.1 66 10.2 6.3 162
OWL CREEK 8975 3.6 2.1 171 4.5 3.0 150
POWDER RIVER PASS 9480 5.8 5.4 107 7.6 6.0 127
SHELL CREEK 9580 8.7 8.0 109 7.6 6.8 112
SYLVAN LAKE 8420 12.9 11.5 112 15.4 10.3 150
SYLVAN ROAD 8120 8.5 6.2 137 10.2 8.5 120
TIMBER CREEK 7950 3.3 2.6 127 5.3 3.4 156
YOUNTS PEAK 8350 10.7 9.5 113 9.3 8.5 109
----- -----
Basin wide percent of average 113 133
SHOSHONE RIVER
BLACKWATER 9780 15.5 10.6 146 13.6 9.3 146
EVENING STAR 9200 16.8 13.8 122 17.5 11.5 152
KIRWIN 9550 6.7 5.5 122 7.8 5.5 142
MARQUETTE 8760 5.1 4.1 124 6.3 4.9 129
SYLVAN LAKE 8420 12.9 11.5 112 15.4 10.3 150
SYLVAN ROAD 8120 8.5 6.2 137 10.2 8.5 120
YOUNTS PEAK 8350 10.7 9.5 113 9.3 8.5 109
----- -----
Basin wide percent of average 125 137
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.4 3.9 87 6.4 4.5 142
BIG GOOSE 7990 3.3 -M * 6.3 -M *
BONE SPRINGS DIV 9350 8.0 8.3 96 8.3 7.3 114
BURGESS JUNCTION 7880 4.5 5.9 76 6.5 5.8 112
CLOUD PEAK RESERVOIR 9860 8.3 6.0 138 7.8 6.4 122
DOME LAKE 8880 4.6 6.8 68 6.5 7.2 90
GRAVE SPRINGS 8550 4.0 4.8 83 7.1 5.3 134
HANSEN SAWMILL 8760 3.3 3.5 94 5.2 4.1 127
MIDDLE POWDER 7760 4.0 6.1 66 10.2 6.3 162
POWDER RIVER PASS 9480 5.8 5.4 107 7.6 6.0 127
SUCKER CREEK 8880 5.6 5.6 100 8.0 6.8 118
TIE CREEK 6870 1.8 -M * 5.1 5.6 91
----- -----
Basin wide percent of average 91 121
BELLE FOURCHE
BLIND PARK 6890 3.4 5.6 61 10.4 5.0 208
NORTH RAPID CREEK 6130 3.1 -M * 9.7 -M *
WARREN PEAK 6520 4.3 5.6 77 9.6 4.1 234
----- -----
Basin wide percent of average 69 220
UPPER N. PLATTE RIVER
COLUMBINE 9400 8.3 10.9 76 10.6 11.7 91
DIVIDE PEAK 8800 8.3 10.2 81 14.5 12.6 115
ELK RIVER 8700 4.8 8.8 55 11.4 9.4 121
JOE WRIGHT 10120 9.2 11.0 84 13.8 12.4 111
NORTH FRENCH CREEK 10100 14.1 12.2 116 16.3 11.6 141
OLD BATTLE 10000 11.7 15.7 75 17.4 15.0 116
SOUTH BRUSH CREEK 8400 5.3 5.2 102 12.4 10.0 124
TOWER 10500 17.4 22.8 76 18.4 17.9 103
WEBBER SPRINGS 9200 7.9 13.1 60 12.6 13.7 92
WILLOW CREEK PASS 9540 4.9 6.0 82 6.8 6.4 106
----- -----
Basin wide percent of average 79 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 8.1 12.7 64 10.9 9.2 118
CASPER MTN. 7900 4.5 7.8 58 10.2 7.3 140
DEADMAN HILL 10220 9.4 8.5 111 10.0 7.9 127
DEER PARK 9700 6.2 -M * 9.3 -M *
LAPRELE CREEK 8320 1.6 5.0 32 7.8 5.5 142
RENO HILL 8400 6.1 6.6 92 10.5 10.0 105
ROACH 9700 7.3 8.3 88 10.5 10.8 97
SAND LAKE 10080 15.4 16.1 96 16.1 10.0 161
SOUTH PASS 9040 7.1 8.8 81 8.7 8.5 102
WINDY PEAK 7840 2.2 3.4 65 8.1 4.4 184
----- -----
Basin wide percent of average 80 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.6 5.4 85 9.4 8.0 118
DIVIDE PEAK 8800 8.3 10.2 81 14.5 12.6 115
OLD BATTLE 10000 11.7 15.7 75 17.4 15.0 116
SANDSTONE RS 8150 -M 6.7 * -M 9.7 *
WHISKEY PARK 8950 8.4 13.8 61 14.9 13.1 114
----- -----
Basin wide percent of average 73 115
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.3 6.6 111 6.8 8.8 77
BLIND BULL SUM 8650 11.7 13.7 85 10.0 11.9 84
EAST RIM DIVIDE 7930 5.5 6.3 87 6.2 8.2 76
ELKHART PARK G.S. 9400 5.8 6.4 91 6.5 8.6 76
GROS VENTRE SUMMIT 8775 6.4 7.5 85 6.8 8.6 79
KENDALL R.S. 7740 6.0 6.7 90 6.9 8.4 82
LOOMIS PARK 8240 6.9 7.8 88 8.5 10.2 83
NEW FORK LAKE 8340 5.0 5.2 96 5.9 7.8 76
SNIDER BASIN 8250 5.9 6.7 88 6.7 8.2 82
SPRING CREEK DIVIDE 9000 11.1 12.7 87 11.7 14.3 82
TRIPLE PEAK 8500 11.0 12.0 92 12.6 16.7 75
----- -----
Basin wide percent of average 90 79
LOWER GREEN RIVER
HAMS FORK 7840 4.1 5.0 82 4.8 7.2 67
HEWINTA 9500 3.3 4.3 77 6.1 6.7 91
HICKERSON PARK 9150 2.4 2.7 89 5.2 5.0 104
HOLE-IN-ROCK 9150 3.0 2.4 125 5.7 5.0 114
INDIAN CREEK 9425 10.2 12.7 80 9.2 13.5 68
KELLEY R.S. 8180 6.0 7.4 81 7.7 10.1 76
STEEL CREEK PARK 10100 5.1 7.7 66 7.4 7.1 104
----- -----
Basin wide percent of average 81 84
UPPER BEAR RIVER
BUG LAKE 7950 5.2 9.6 54 6.8 10.0 68
HAYDEN FORK 9400 4.9 7.5 65 8.5 9.3 91
KELLEY R.S. 8180 6.0 7.4 81 7.7 10.1 76
LILY LAKE 9050 4.9 6.6 74 7.9 7.6 104
MONTE CRISTO 8960 7.6 12.2 62 10.7 13.0 82
SALT RIVER SUMMIT 7600 5.1 5.8 88 7.5 9.1 82
TRIAL LAKE 9960 5.1 11.8 43 6.5 11.7 56
----- -----
Basin wide percent of average 64 79
-----------------------------------------------------------------------------
-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.