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 MONDAY: MARCH 24 , 2008
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 15.3 17.9 85 25.1 20.9 120
COTTONWOOD CREEK 7670 23.2 23.2 100 23.8 26.5 90
GRAND TARGHEE 9260 47.4 -M * 33.3 -M *
GRANITE CREEK 6770 17.2 18.6 92 22.1 19.6 113
GRASSY LAKE 7265 33.7 34.7 97 -M 35.1 *
GROS VENTRE SUMMIT 8750 12.1 13.8 88 13.4 12.5 107
GUNSIGHT PASS 9820 11.3 -M * 13.3 -M *
LEWIS LAKE DIVIDE 7850 32.7 34.6 95 35.7 35.9 99
PHILLIPS BENCH 8200 31.1 28.0 111 33.1 28.2 117
SALT RIVER SUMMIT 7760 12.9 14.1 91 14.9 18.1 82
SNAKE RIVER STATION 6920 18.9 19.0 99 26.3 21.8 121
SPRING CREEK DIVIDE 9000 21.6 25.8 84 22.6 25.6 88
THUMB DIVIDE 7980 16.7 18.6 90 19.0 18.3 104
TOGWOTEE PASS 9580 25.7 24.1 107 27.9 23.8 117
TWO OCEAN PLATEAU 9240 -M 27.1 * -M 26.9 *
WILLOW CREEK 8380 30.4 29.5 103 36.0 31.2 115
----- -----
Basin wide percent of average 97 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 24.5 22.8 107 23.3 19.5 119
BLACK BEAR 8170 43.6 38.1 114 -M 39.1 *
CANYON 7870 16.2 13.4 121 19.6 15.0 131
FISHER CREEK 9100 39.0 33.9 115 -M 35.3 *
MADISON PLATEAU 7750 28.2 24.3 116 30.5 25.8 118
NORTHEAST ENTRANCE 7350 -M 11.0 * -M 12.3 *
PARKER PEAK 9400 24.8 20.9 119 -M 15.7 *
SYLVAN LAKE 8420 20.2 21.8 93 24.8 20.3 122
THUMB DIVIDE 7980 16.7 18.6 90 19.0 18.3 104
TWO OCEAN PLATEAU 9240 -M 27.1 * -M 26.9 *
WHISKEY CREEK 6800 17.7 16.6 107 24.1 20.3 119
WHITE MILL 8700 26.2 23.5 111 25.0 26.2 95
WOLVERINE 7650 10.6 11.5 92 13.3 12.4 107
----- -----
Basin wide percent of average 109 114
WIND RIVER
BURROUGHS CREEK 8750 15.0 14.2 106 17.9 15.7 114
COLD SPRINGS 9630 6.2 8.5 73 9.3 10.0 93
DEER PARK 9700 14.7 16.4 90 19.3 21.0 92
HOBBS PARK 10100 13.2 14.0 94 13.8 12.0 115
LITTLE WARM 9370 9.0 11.3 80 12.7 12.8 99
SOUTH PASS 9040 13.8 16.1 86 16.7 17.6 95
ST. LAWRENCE ALT 8620 6.7 6.9 97 8.2 8.3 99
TOGWOTEE PASS 9580 25.7 24.1 107 27.9 23.8 117
TOWNSEND CREEK 8700 8.7 8.1 107 12.0 10.8 111
----- -----
Basin wide percent of average 94 104
BIGHORN BASIN
BALD MTN. 9380 16.0 18.7 86 14.8 16.5 90
BEAR TRAP MEADOW 8200 8.7 5.3 164 8.8 7.7 114
BLACKWATER 9780 23.5 23.6 100 21.8 19.8 110
BONE SPRINGS DIV 9350 16.5 15.4 107 16.9 13.8 122
EVENING STAR 9200 28.7 28.8 100 30.1 24.5 123
GRAVE SPRINGS 8550 9.6 8.8 109 10.2 9.2 111
KIRWIN 9550 11.4 10.8 106 13.8 10.7 129
MARQUETTE 8760 5.9 8.3 71 9.2 9.0 102
MIDDLE POWDER 7760 11.3 11.1 102 9.2 11.6 79
OWL CREEK 8975 5.3 5.2 102 6.4 5.4 119
POWDER RIVER PASS 9480 11.8 10.4 113 14.0 11.7 120
SHELL CREEK 9580 15.4 14.0 110 14.9 12.6 118
SYLVAN LAKE 8420 20.2 21.8 93 24.8 20.3 122
SYLVAN ROAD 7120 11.5 12.5 92 20.0 17.2 116
TIMBER CREEK 7950 4.0 5.4 74 7.4 6.8 109
YOUNTS PEAK 8350 16.1 16.6 97 16.4 15.6 105
----- -----
Basin wide percent of average 100 112
SHOSHONE RIVER
BLACKWATER 9780 23.5 23.6 100 21.8 19.8 110
EVENING STAR 9200 28.7 28.8 100 30.1 24.5 123
KIRWIN 9550 11.4 10.8 106 13.8 10.7 129
MARQUETTE 8760 5.9 8.3 71 9.2 9.0 102
SYLVAN LAKE 8420 20.2 21.8 93 24.8 20.3 122
SYLVAN ROAD 7120 11.5 12.5 92 20.0 17.2 116
YOUNTS PEAK 8350 16.1 16.6 97 16.4 15.6 105
----- -----
Basin wide percent of average 96 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.7 5.3 164 8.8 7.7 114
BIG GOOSE 7990 8.5 9.6 89 11.5 8.0 144
BONE SPRINGS DIV 9350 16.5 15.4 107 16.9 13.8 122
BURGESS JUNCTION 7880 11.7 10.9 107 13.2 11.4 116
CLOUD PEAK RESERVOIR 9860 15.0 12.5 120 14.8 11.9 124
DOME LAKE 8880 11.1 11.5 97 14.4 12.3 117
GRAVE SPRINGS 8550 9.6 8.8 109 10.2 9.2 111
HANSEN SAWMILL 8360 6.8 6.3 108 9.1 7.6 120
MIDDLE POWDER 7760 11.3 11.1 102 9.2 11.6 79
POWDER RIVER PASS 9480 11.8 10.4 113 14.0 11.7 120
SUCKER CREEK 8880 13.8 11.0 125 15.8 12.7 124
TIE CREEK 6870 7.2 5.9 122 11.2 9.3 120
----- -----
Basin wide percent of average 111 117
BELLE FOURCHE
BLIND PARK 6890 7.1 8.7 82 9.9 10.6 93
COLE CANYON 5910 5.4 6.6 82 7.0 6.3 111
NORTH RAPID CREEK 6130 8.1 7.9 103 8.1 8.3 98
----- -----
Basin wide percent of average 89 99
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.1 24.6 106 26.6 24.2 110
DIVIDE PEAK 8880 21.4 19.0 113 21.8 19.9 110
ELK RIVER 8700 25.0 18.8 133 22.1 18.8 118
JOE WRIGHT 10120 21.7 20.3 107 25.3 23.6 107
NORTH FRENCH CREEK 10130 28.8 27.6 104 27.7 23.6 117
OLD BATTLE 10000 31.1 31.0 100 33.8 33.3 102
SAGE CREEK BASIN 7850 16.6 11.0 151 16.9 11.5 147
SOUTH BRUSH CREEK 8440 13.0 12.6 103 15.9 15.5 103
TOWER 10500 40.7 43.6 93 30.9 36.9 84
WEBBER SPRINGS 9250 24.7 25.7 96 28.2 25.6 110
WILLOW CREEK PASS 9540 14.6 11.4 128 14.5 12.2 119
----- -----
Basin wide percent of average 107 108
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.1 22.5 89 20.6 20.9 99
CASPER MTN. 7900 12.7 13.5 94 13.5 13.4 101
DEADMAN HILL 10220 16.0 15.4 104 16.4 16.0 102
DEER PARK 9700 14.7 16.4 90 19.3 21.0 92
LAPRELE CREEK 8375 7.2 10.6 68 10.0 11.9 84
RENO HILL 8400 12.7 13.2 96 14.5 13.9 104
ROACH 9700 18.0 16.2 111 20.5 17.8 115
SAND LAKE 10050 26.1 30.9 84 25.8 22.9 113
SOUTH PASS 9040 13.8 16.1 86 16.7 17.6 95
WINDY PEAK 7900 7.6 7.7 99 9.0 10.0 90
----- -----
Basin wide percent of average 92 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.1 11.5 140 15.7 15.0 105
DIVIDE PEAK 8880 21.4 19.0 113 21.8 19.9 110
OLD BATTLE 10000 31.1 31.0 100 33.8 33.3 102
SANDSTONE RS 8150 16.6 14.9 111 20.1 18.1 111
WHISKEY PARK 8950 29.6 29.2 101 31.1 27.5 113
----- -----
Basin wide percent of average 109 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 14.0 89 12.5 12.9 97
BLIND BULL SUM 8650 23.8 27.3 87 17.3 21.6 80
EAST RIM DIVIDE 7930 8.4 12.8 66 10.5 11.7 90
ELKHART PARK G.S. 9400 10.6 13.0 82 11.4 12.8 89
GROS VENTRE SUMMIT 8750 12.1 13.8 88 13.4 12.5 107
GUNSIGHT PASS 9820 11.3 -M * 13.3 -M *
KENDALL R.S. 7740 11.5 14.5 79 13.2 14.2 93
LOOMIS PARK 8240 15.1 17.1 88 16.7 16.9 99
NEW FORK LAKE 8340 9.1 11.0 83 9.1 11.0 83
SNIDER BASIN 8060 12.9 14.3 90 13.9 15.6 89
SPRING CREEK DIVIDE 9000 21.6 25.8 84 22.6 25.6 88
TRIPLE PEAK 8500 23.6 24.3 97 26.7 24.0 111
----- -----
Basin wide percent of average 86 94
LOWER GREEN RIVER
HAMS FORK 7840 11.3 12.4 91 9.8 11.8 83
HEWINTA 9519 15.1 11.3 134 16.6 13.8 120
HICKERSON PARK 9145 7.7 7.0 110 9.9 7.5 132
HOLE-IN-ROCK 9150 6.9 6.8 101 10.2 7.0 146
INDIAN CREEK 9425 23.6 26.9 88 -M 24.5 *
KELLEY R.S. 8180 14.2 16.5 86 16.9 19.6 86
STEEL CREEK PARK 10200 15.3 15.1 101 18.2 15.3 119
----- -----
Basin wide percent of average 98 109
UPPER BEAR RIVER
BUG LAKE 7950 17.5 20.3 86 16.7 18.6 90
HAYDEN FORK 9212 19.8 15.9 125 22.5 20.1 112
KELLEY R.S. 8180 14.2 16.5 86 16.9 19.6 86
LILY LAKE 9156 14.7 12.6 117 17.2 16.7 103
MONTE CRISTO 8960 27.7 29.1 95 25.7 24.6 104
SALT RIVER SUMMIT 7760 12.9 14.1 91 14.9 18.1 82
TRIAL LAKE 9992 21.3 24.3 88 23.9 24.0 100
----- -----
Basin wide percent of average 96 97
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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.