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 FRIDAY: FEBRUARY 27 , 1998
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 14.7 15.5 95 16.8 19.8 85
COTTONWOOD CREEK 7600 17.8 18.2 98 18.9 21.9 86
GRANITE CREEK 6770 14.9 15.2 98 17.0 20.8 82
GRASSY LAKE 7265 26.7 29.6 90 27.5 32.1 86
GROS VENTRE SUMMIT 8775 9.1 12.7 72 10.2 14.0 73
LEWIS LAKE DIVIDE 7860 24.0 29.1 82 25.6 32.6 79
PHILLIPS BENCH 8200 22.6 23.9 95 22.7 25.8 88
SALT RIVER SUMMIT 7600 12.8 11.9 108 14.6 14.9 98
SNAKE RIVER STATION 6920 14.1 16.0 88 17.0 22.5 76
SPRING CREEK DIVIDE 9000 18.0 22.9 79 17.7 23.8 74
THUMB DIVIDE 7980 13.1 14.1 93 14.4 18.6 77
TOGWOTEE PASS 9580 21.1 20.5 103 19.4 24.4 80
TWO OCEAN PLATEAU 9360 22.3 21.9 102 22.2 27.3 81
WILLOW CREEK 8450 22.6 25.5 89 25.5 28.2 90
----- -----
Basin wide percent of average 92 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.9 19.6 81 13.8 14.9 93
BLACK BEAR 7950 31.4 31.2 101 -M 33.2 *
CANYON 7940 10.7 10.5 102 12.3 11.9 103
FISHER CREEK 9100 25.5 29.9 85 22.8 30.3 75
MADISON PLATEAU 7750 17.0 20.3 84 18.3 21.5 85
NORTHEAST ENTRANCE 7350 6.2 8.0 78 10.3 10.1 102
PARKER PEAK 9400 15.0 17.7 85 13.0 12.9 101
SYLVAN LAKE 8420 13.6 18.3 74 16.4 16.1 102
THUMB DIVIDE 7980 13.1 14.1 93 14.4 18.6 77
TWO OCEAN PLATEAU 9360 22.3 21.9 102 22.2 27.3 81
WHISKEY CREEK 6800 11.7 14.3 82 14.4 17.7 81
WHITE MILL 8700 19.0 20.9 91 17.5 23.5 74
WOLVERINE 7650 8.0 10.0 80 8.6 10.8 80
----- -----
Basin wide percent of average 88 85
WIND RIVER
BURROUGHS CREEK 8750 12.0 12.9 93 13.2 13.8 96
COLD SPRINGS 9630 7.9 6.9 114 8.7 8.3 105
DEER PARK 9700 -M -M * 15.8 -M *
HOBBS PARK 10100 10.8 11.9 91 9.8 11.1 88
LITTLE WARM 9620 8.2 9.1 90 10.1 10.7 94
SOUTH PASS 9040 11.3 13.8 82 12.6 13.6 93
ST. LAWRENCE ALT 8620 7.5 6.1 123 7.3 7.9 92
TOGWOTEE PASS 9580 21.1 20.5 103 19.4 24.4 80
TOWNSEND CREEK 8700 8.3 7.9 105 9.5 9.7 98
----- -----
Basin wide percent of average 98 91
BIGHORN BASIN
BALD MTN. 9375 16.2 16.8 96 14.4 13.9 104
BEAR TRAP MEADOW 7900 4.8 5.8 83 4.5 6.2 73
BLACKWATER 9780 16.8 17.7 95 15.1 15.0 101
BONE SPRINGS DIV 9350 13.4 13.2 102 13.1 11.5 114
EVENING STAR 9200 18.7 22.2 84 20.4 18.7 109
GRAVE SPRINGS 8550 6.9 -M * 6.8 7.3 93
KIRWIN 9550 10.0 8.0 125 11.3 8.5 133
MARQUETTE 8760 10.1 6.4 158 10.3 7.0 147
MIDDLE POWDER 7760 7.9 9.6 82 7.8 9.1 86
OWL CREEK 8975 4.9 3.6 136 4.7 4.8 98
POWDER RIVER PASS 9480 8.7 8.7 100 9.4 9.3 101
SHELL CREEK 9580 11.7 12.4 94 9.1 10.5 87
SYLVAN LAKE 8420 13.6 18.3 74 16.4 16.1 102
SYLVAN ROAD 8120 8.4 11.0 76 12.2 13.4 91
TIMBER CREEK 7950 6.7 4.8 140 8.1 5.0 162
YOUNTS PEAK 8350 12.5 14.6 86 12.3 13.7 90
----- -----
Basin wide percent of average 95 103
SHOSHONE RIVER
BLACKWATER 9780 16.8 17.7 95 15.1 15.0 101
EVENING STAR 9200 18.7 22.2 84 20.4 18.7 109
KIRWIN 9550 10.0 8.0 125 11.3 8.5 133
MARQUETTE 8760 10.1 6.4 158 10.3 7.0 147
SYLVAN LAKE 8420 13.6 18.3 74 16.4 16.1 102
SYLVAN ROAD 8120 8.4 11.0 76 12.2 13.4 91
YOUNTS PEAK 8350 12.5 14.6 86 12.3 13.7 90
----- -----
Basin wide percent of average 92 106
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.8 5.8 83 4.5 6.2 73
BONE SPRINGS DIV 9350 13.4 13.2 102 13.1 11.5 114
BURGESS JUNCTION 7880 8.8 9.5 93 9.9 8.5 116
CLOUD PEAK RESERVOIR 9860 11.3 10.9 104 11.6 10.1 115
DOME LAKE 8880 8.7 11.1 78 11.2 10.3 109
GRAVE SPRINGS 8550 6.9 -M * 6.8 7.3 93
HANSEN SAWMILL 8760 6.3 5.6 113 7.3 5.9 124
MIDDLE POWDER 7760 7.9 9.6 82 7.8 9.1 86
POWDER RIVER PASS 9480 8.7 8.7 100 9.4 9.3 101
SUCKER CREEK 8880 10.1 9.6 105 11.4 10.4 110
TIE CREEK 6870 6.4 -M * 9.6 8.1 119
----- -----
Basin wide percent of average 95 106
BELLE FOURCHE
BLIND PARK 6890 8.2 9.0 91 10.5 7.5 140
NORTH RAPID CREEK 6130 8.2 -M * 8.1 -M *
WARREN PEAK 6520 10.9 9.0 121 8.4 6.1 138
----- -----
Basin wide percent of average 106 139
UPPER N. PLATTE RIVER
COLUMBINE 9400 18.7 20.6 91 18.9 20.2 94
DIVIDE PEAK 8800 14.5 16.6 87 15.6 18.5 84
ELK RIVER 8700 13.7 16.4 84 14.2 15.3 93
JOE WRIGHT 10120 16.1 17.2 94 18.8 19.9 94
NORTH FRENCH CREEK 10100 23.0 20.1 114 21.8 18.6 117
OLD BATTLE 10000 24.3 25.8 94 27.1 24.1 112
SOUTH BRUSH CREEK 8400 8.9 9.2 97 9.6 12.7 76
TOWER 10500 37.7 36.8 102 32.2 29.6 109
WEBBER SPRINGS 9200 16.2 22.0 74 20.4 20.4 100
WILLOW CREEK PASS 9540 5.5 9.1 60 5.6 9.8 57
----- -----
Basin wide percent of average 92 97
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.7 19.6 75 15.5 15.3 101
CASPER MTN. 7900 11.1 12.1 92 10.5 10.6 99
DEADMAN HILL 10220 10.9 13.3 82 10.5 12.8 82
DEER PARK 9700 -M -M * 15.8 -M *
LAPRELE CREEK 8320 7.9 8.3 95 9.0 9.0 100
RENO HILL 8400 10.5 10.6 99 9.5 14.4 66
ROACH 9700 11.7 13.8 85 13.3 17.1 78
SAND LAKE 10080 19.6 26.4 74 17.8 16.2 110
SOUTH PASS 9040 11.3 13.8 82 12.6 13.6 93
WINDY PEAK 7840 5.9 6.1 97 6.9 7.0 99
----- -----
Basin wide percent of average 84 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.8 9.7 111 12.9 12.5 103
DIVIDE PEAK 8800 14.5 16.6 87 15.6 18.5 84
OLD BATTLE 10000 24.3 25.8 94 27.1 24.1 112
SANDSTONE RS 8150 12.6 12.0 105 15.6 15.3 102
WHISKEY PARK 8950 21.9 23.2 94 18.9 22.3 85
----- -----
Basin wide percent of average 96 97
UPPER GREEN RIVER
BIG SANDY OPENING 9100 9.0 11.9 76 8.2 14.3 57
BLIND BULL SUM 8650 19.4 23.9 81 15.1 20.7 73
EAST RIM DIVIDE 7930 8.6 11.8 73 8.7 13.4 65
ELKHART PARK G.S. 9400 9.3 11.3 82 10.0 14.1 71
GROS VENTRE SUMMIT 8775 9.1 12.7 72 10.2 14.0 73
KENDALL R.S. 7740 11.4 12.3 93 11.3 13.7 82
LOOMIS PARK 8240 10.9 14.7 74 12.3 16.6 74
NEW FORK LAKE 8340 8.1 9.8 83 8.1 12.7 64
SNIDER BASIN 8250 9.4 12.6 75 9.7 13.4 72
SPRING CREEK DIVIDE 9000 18.0 22.9 79 17.7 23.8 74
TRIPLE PEAK 8500 17.6 21.4 82 17.8 27.5 65
----- -----
Basin wide percent of average 79 70
LOWER GREEN RIVER
HAMS FORK 7840 9.3 10.3 90 8.5 11.8 72
HEWINTA 9500 9.3 8.3 112 12.0 10.1 119
HICKERSON PARK 9150 8.7 4.9 178 10.0 7.1 141
HOLE-IN-ROCK 9150 6.4 4.4 145 8.9 7.1 125
INDIAN CREEK 9425 19.7 22.6 87 15.4 22.2 69
KELLEY R.S. 8180 12.8 14.0 91 13.2 16.6 80
STEEL CREEK PARK 10100 12.1 12.4 98 14.3 10.2 140
----- -----
Basin wide percent of average 102 97
UPPER BEAR RIVER
BUG LAKE 7950 18.1 16.7 108 17.4 15.7 111
HAYDEN FORK 9400 11.4 13.5 84 16.3 15.0 109
KELLEY R.S. 8180 12.8 14.0 91 13.2 16.6 80
LILY LAKE 9050 11.6 10.4 112 13.7 11.5 119
MONTE CRISTO 8960 25.8 23.0 112 22.3 20.5 109
SALT RIVER SUMMIT 7600 12.8 11.9 108 14.6 14.9 98
TRIAL LAKE 9960 17.9 20.8 86 18.7 19.4 96
----- -----
Basin wide percent of average 100 102
-----------------------------------------------------------------------------
-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.