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: JANUARY 23 , 1998
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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 12.7 11.2 113 14.8 14.8 100
COTTONWOOD CREEK 7600 14.1 12.7 111 15.4 15.7 98
GRANITE CREEK 6770 12.0 11.0 109 14.1 15.6 90
GRASSY LAKE 7265 22.2 20.6 108 23.2 24.0 97
GROS VENTRE SUMMIT 8775 7.0 9.6 73 8.2 10.6 77
LEWIS LAKE DIVIDE 7860 19.5 20.4 96 21.2 24.5 87
PHILLIPS BENCH 8200 17.9 17.2 104 18.1 19.3 94
SALT RIVER SUMMIT 7600 9.9 7.9 125 11.8 11.2 105
SNAKE RIVER STATION 6920 11.9 11.1 107 14.8 16.9 88
SPRING CREEK DIVIDE 9000 15.1 16.3 93 15.0 17.6 85
THUMB DIVIDE 7980 10.5 10.3 102 11.7 13.9 84
TOGWOTEE PASS 9580 13.2 15.3 86 16.0 18.3 87
TWO OCEAN PLATEAU 9360 19.1 16.7 114 16.9 20.5 82
WILLOW CREEK 8450 17.8 18.8 95 20.3 20.7 98
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Basin wide percent of average 102 91
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 14.2 14.8 96 12.2 11.1 110
BLACK BEAR 7950 25.0 22.0 114 22.3 23.8 94
CANYON 7940 8.9 7.5 119 10.0 9.0 111
FISHER CREEK 9100 21.2 21.9 97 18.8 22.1 85
MADISON PLATEAU 7750 13.1 14.5 90 14.5 15.7 92
NORTHEAST ENTRANCE 7350 5.1 5.8 88 9.2 7.6 121
PARKER PEAK 9400 12.7 13.3 95 11.1 9.7 114
SYLVAN LAKE 8420 11.2 13.8 81 13.7 12.2 112
THUMB DIVIDE 7980 10.5 10.3 102 11.7 13.9 84
TWO OCEAN PLATEAU 9360 19.1 16.7 114 16.9 20.5 82
WHISKEY CREEK 6800 9.0 10.0 90 11.5 13.0 88
WHITE MILL 8700 16.2 15.4 105 15.2 17.4 87
WOLVERINE 7650 7.3 7.2 101 7.9 8.1 98
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Basin wide percent of average 100 95
WIND RIVER
BURROUGHS CREEK 8750 11.0 9.5 116 12.1 10.4 116
COLD SPRINGS 9630 6.4 5.4 119 7.2 6.5 111
DEER PARK 9700 -M -M * 12.4 -M *
HOBBS PARK 10100 9.0 9.4 96 8.2 8.5 96
LITTLE WARM 9620 6.7 6.6 102 8.6 8.2 105
SOUTH PASS 9040 -M 10.5 * 10.6 10.0 106
ST. LAWRENCE ALT 8620 6.5 4.4 148 6.4 5.9 108
TOGWOTEE PASS 9580 13.2 15.3 86 16.0 18.3 87
TOWNSEND CREEK 8700 6.6 5.7 116 8.0 7.2 111
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Basin wide percent of average 106 103
BIGHORN BASIN
BALD MTN. 9375 12.8 12.8 100 11.3 10.8 105
BEAR TRAP MEADOW 7900 3.3 4.5 73 3.9 5.1 76
BLACKWATER 9780 14.9 12.9 116 13.1 11.2 117
BONE SPRINGS DIV 9350 10.0 9.9 101 10.3 8.7 118
EVENING STAR 9200 16.4 16.5 99 18.0 14.0 129
GRAVE SPRINGS 8550 4.5 -M * 5.0 6.0 83
KIRWIN 9550 8.9 6.2 144 10.0 6.3 159
MARQUETTE 8760 8.4 4.8 175 8.7 5.5 158
MIDDLE POWDER 7760 5.6 7.3 77 6.2 7.3 85
OWL CREEK 8975 3.9 2.6 150 3.8 3.5 109
POWDER RIVER PASS 9480 6.3 6.5 97 7.1 7.2 99
SHELL CREEK 9580 8.8 9.5 93 6.9 8.2 84
SYLVAN LAKE 8420 11.2 13.8 81 13.7 12.2 112
SYLVAN ROAD 8120 7.4 7.7 96 11.1 10.2 109
TIMBER CREEK 7950 5.6 3.3 170 6.8 3.9 174
YOUNTS PEAK 8350 11.2 11.3 99 11.1 10.3 108
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Basin wide percent of average 104 113
SHOSHONE RIVER
BLACKWATER 9780 14.9 12.9 116 13.1 11.2 117
EVENING STAR 9200 16.4 16.5 99 18.0 14.0 129
KIRWIN 9550 8.9 6.2 144 10.0 6.3 159
MARQUETTE 8760 8.4 4.8 175 8.7 5.5 158
SYLVAN LAKE 8420 11.2 13.8 81 13.7 12.2 112
SYLVAN ROAD 8120 7.4 7.7 96 11.1 10.2 109
YOUNTS PEAK 8350 11.2 11.3 99 11.1 10.3 108
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Basin wide percent of average 107 123
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.3 4.5 73 3.9 5.1 76
BONE SPRINGS DIV 9350 10.0 9.9 101 10.3 8.7 118
BURGESS JUNCTION 7880 6.3 7.0 90 7.5 6.7 112
CLOUD PEAK RESERVOIR 9860 7.9 7.3 108 8.7 7.5 116
DOME LAKE 8880 6.5 8.3 78 8.7 8.2 106
GRAVE SPRINGS 8550 4.5 -M * 5.0 6.0 83
HANSEN SAWMILL 8760 4.4 4.2 105 5.4 4.7 115
MIDDLE POWDER 7760 5.6 7.3 77 6.2 7.3 85
POWDER RIVER PASS 9480 6.3 6.5 97 7.1 7.2 99
SUCKER CREEK 8880 7.4 6.8 109 8.9 8.0 111
TIE CREEK 6870 4.9 -M * 8.3 6.4 130
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Basin wide percent of average 93 106
BELLE FOURCHE
BLIND PARK 6890 5.3 6.7 79 7.4 5.7 130
NORTH RAPID CREEK 6130 5.2 -M * 5.8 -M *
WARREN PEAK 6520 5.7 6.7 85 6.1 4.8 127
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Basin wide percent of average 82 129
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.0 14.2 92 14.1 14.8 95
DIVIDE PEAK 8800 10.3 12.3 84 12.5 14.9 84
ELK RIVER 8700 9.0 11.3 80 10.2 11.4 89
JOE WRIGHT 10120 12.2 13.0 94 14.6 15.1 97
NORTH FRENCH CREEK 10100 16.3 14.7 111 16.1 13.9 116
OLD BATTLE 10000 17.5 18.9 93 21.7 17.9 121
SOUTH BRUSH CREEK 8400 4.8 6.5 74 5.8 10.5 55
TOWER 10500 25.0 27.1 92 24.0 22.0 109
WEBBER SPRINGS 9200 12.9 16.0 81 16.4 15.6 105
WILLOW CREEK PASS 9540 4.0 6.9 58 4.5 7.3 62
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Basin wide percent of average 89 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 10.9 14.9 73 12.4 11.1 112
CASPER MTN. 7900 8.6 8.8 98 8.5 8.2 104
DEADMAN HILL 10220 9.4 10.3 91 9.0 9.5 95
DEER PARK 9700 -M -M * 12.4 -M *
LAPRELE CREEK 8320 5.4 6.1 89 6.5 6.9 94
RENO HILL 8400 8.1 7.8 104 7.3 10.9 67
ROACH 9700 9.0 10.1 89 11.1 13.0 85
SAND LAKE 10080 15.3 19.5 78 14.2 12.0 118
SOUTH PASS 9040 -M 10.5 * 10.6 10.0 106
WINDY PEAK 7840 3.9 4.1 95 5.2 5.4 96
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Basin wide percent of average 87 97
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 6.7 87 9.4 9.9 95
DIVIDE PEAK 8800 10.3 12.3 84 12.5 14.9 84
OLD BATTLE 10000 17.5 18.9 93 21.7 17.9 121
SANDSTONE RS 8150 8.6 8.5 101 11.6 12.1 96
WHISKEY PARK 8950 16.3 16.9 96 17.5 17.6 99
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Basin wide percent of average 92 100
UPPER GREEN RIVER
BIG SANDY OPENING 9100 6.8 8.6 79 6.2 10.8 57
BLIND BULL SUM 8650 16.4 17.3 95 12.8 15.1 85
EAST RIM DIVIDE 7930 6.9 8.3 83 7.2 10.1 71
ELKHART PARK G.S. 9400 7.6 8.1 94 8.1 10.6 76
GROS VENTRE SUMMIT 8775 7.0 9.6 73 8.2 10.6 77
KENDALL R.S. 7740 9.5 8.9 107 9.6 10.3 93
LOOMIS PARK 8240 9.2 10.4 88 10.0 12.6 79
NEW FORK LAKE 8340 6.5 7.0 93 6.5 9.6 68
SNIDER BASIN 8250 8.1 8.8 92 8.5 10.1 84
SPRING CREEK DIVIDE 9000 15.1 16.3 93 15.0 17.6 85
TRIPLE PEAK 8500 15.0 15.6 96 15.3 20.6 74
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Basin wide percent of average 91 78
LOWER GREEN RIVER
HAMS FORK 7840 7.6 7.1 107 6.6 8.9 74
HEWINTA 9500 7.7 5.6 138 10.1 7.8 129
HICKERSON PARK 9150 6.0 3.2 188 8.4 5.7 147
HOLE-IN-ROCK 9150 4.5 2.9 155 7.2 5.7 126
INDIAN CREEK 9425 15.3 16.3 94 12.1 16.6 73
KELLEY R.S. 8180 10.3 9.6 107 10.8 12.5 86
STEEL CREEK PARK 10100 9.1 9.1 100 11.5 8.1 142
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Basin wide percent of average 112 102
UPPER BEAR RIVER
BUG LAKE 7950 14.0 11.8 119 13.1 11.8 111
HAYDEN FORK 9400 8.5 9.4 90 13.0 11.0 118
KELLEY R.S. 8180 10.3 9.6 107 10.8 12.5 86
LILY LAKE 9050 8.2 7.6 108 10.4 8.8 118
MONTE CRISTO 8960 19.2 15.7 122 17.1 15.3 112
SALT RIVER SUMMIT 7600 9.9 7.9 125 11.8 11.2 105
TRIAL LAKE 9960 12.6 14.6 86 13.3 14.0 95
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Basin wide percent of average 108 106
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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.