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: DECEMBER 30 , 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 8.6 7.6 113 10.6 10.9 97
COTTONWOOD CREEK 7600 8.5 8.5 100 11.6 11.6 100
GRANITE CREEK 6770 6.8 7.0 97 8.8 11.5 77
GRASSY LAKE 7265 15.0 13.8 109 16.4 17.7 93
GROS VENTRE SUMMIT 8775 6.2 6.7 93 6.5 7.8 83
LEWIS LAKE DIVIDE 7860 14.1 13.4 105 16.7 18.0 93
PHILLIPS BENCH 8200 11.7 11.1 105 12.1 13.9 87
SALT RIVER SUMMIT 7600 4.9 4.9 100 7.3 8.3 88
SNAKE RIVER STATION 6920 7.5 7.4 101 10.2 12.4 82
SPRING CREEK DIVIDE 9000 10.3 11.3 91 11.3 12.9 88
THUMB DIVIDE 7980 9.9 7.0 141 10.2 10.2 100
TOGWOTEE PASS 9580 12.5 10.8 116 12.6 13.4 94
TWO OCEAN PLATEAU 9360 16.0 12.3 130 14.5 15.1 96
WILLOW CREEK 8450 11.6 12.4 94 17.0 15.2 112
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Basin wide percent of average 107 93
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 11.3 11.2 101 10.3 8.3 124
BLACK BEAR 7950 19.8 15.1 131 19.1 16.7 114
CANYON 7940 7.3 5.1 143 8.3 6.7 124
FISHER CREEK 9100 17.6 15.2 116 15.9 15.6 102
MADISON PLATEAU 7750 -M 9.8 * 13.2 11.4 116
NORTHEAST ENTRANCE 7350 4.6 3.9 118 6.3 5.7 111
PARKER PEAK 9400 10.5 10.4 101 -M 7.4 *
SYLVAN LAKE 8420 11.2 10.6 106 13.6 9.6 142
THUMB DIVIDE 7980 9.9 7.0 141 10.2 10.2 100
TWO OCEAN PLATEAU 9360 16.0 12.3 130 14.5 15.1 96
WHISKEY CREEK 6800 8.2 6.8 121 10.6 9.4 113
WHITE MILL 8700 10.9 11.1 98 10.4 12.5 83
WOLVERINE 7650 7.8 5.0 156 6.2 6.3 98
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Basin wide percent of average 119 109
WIND RIVER
BURROUGHS CREEK 8750 7.7 6.9 112 8.4 7.9 106
COLD SPRINGS 9630 5.0 4.3 116 6.6 5.4 122
DEER PARK 9700 6.2 -M * 9.3 -M *
HOBBS PARK 10100 8.3 7.5 111 8.6 6.7 128
LITTLE WARM 9620 6.0 5.0 120 7.0 6.5 108
SOUTH PASS 9040 7.0 8.1 86 8.6 7.8 110
ST. LAWRENCE ALT 8620 3.9 3.2 122 6.5 4.9 133
TOGWOTEE PASS 9580 12.5 10.8 116 12.6 13.4 94
TOWNSEND CREEK 8700 4.6 4.4 105 7.2 5.7 126
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Basin wide percent of average 110 112
BIGHORN BASIN
BALD MTN. 9375 7.7 9.9 78 7.6 8.5 89
BEAR TRAP MEADOW 7900 2.8 3.6 78 6.2 4.2 148
BLACKWATER 9780 14.9 9.6 155 13.0 8.6 151
BONE SPRINGS DIV 9350 6.6 7.6 87 7.0 6.7 104
EVENING STAR 9200 15.4 12.7 121 15.9 10.5 151
GRAVE SPRINGS 8550 2.8 4.4 64 6.0 5.0 120
KIRWIN 9550 6.6 5.1 129 7.7 5.1 151
MARQUETTE 8760 5.1 3.7 138 6.4 4.6 139
MIDDLE POWDER 7760 3.2 5.6 57 9.8 5.9 166
OWL CREEK 8975 3.6 1.8 200 -M 2.7 *
POWDER RIVER PASS 9480 4.5 5.0 90 6.3 5.5 115
SHELL CREEK 9580 6.9 7.3 95 6.0 6.3 95
SYLVAN LAKE 8420 11.2 10.6 106 13.6 9.6 142
SYLVAN ROAD 8120 7.3 5.7 128 9.0 7.8 115
TIMBER CREEK 7950 3.2 2.3 139 5.3 3.2 166
YOUNTS PEAK 8350 9.9 8.7 114 8.9 7.8 114
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Basin wide percent of average 108 130
SHOSHONE RIVER
BLACKWATER 9780 14.9 9.6 155 13.0 8.6 151
EVENING STAR 9200 15.4 12.7 121 15.9 10.5 151
KIRWIN 9550 6.6 5.1 129 7.7 5.1 151
MARQUETTE 8760 5.1 3.7 138 6.4 4.6 139
SYLVAN LAKE 8420 11.2 10.6 106 13.6 9.6 142
SYLVAN ROAD 8120 7.3 5.7 128 9.0 7.8 115
YOUNTS PEAK 8350 9.9 8.7 114 8.9 7.8 114
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Basin wide percent of average 125 138
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.8 3.6 78 6.2 4.2 148
BIG GOOSE 7990 2.8 -M * 6.2 -M *
BONE SPRINGS DIV 9350 6.6 7.6 87 7.0 6.7 104
BURGESS JUNCTION 7880 3.3 5.4 61 5.4 5.5 98
CLOUD PEAK RESERVOIR 9860 6.5 5.5 118 7.0 6.0 117
DOME LAKE 8880 3.7 6.2 60 5.4 6.8 79
GRAVE SPRINGS 8550 2.8 4.4 64 6.0 5.0 120
HANSEN SAWMILL 8760 3.1 3.2 97 5.0 3.8 132
MIDDLE POWDER 7760 3.2 5.6 57 9.8 5.9 166
POWDER RIVER PASS 9480 4.5 5.0 90 6.3 5.5 115
SUCKER CREEK 8880 4.2 5.0 84 7.0 6.4 109
TIE CREEK 6870 .9 -M * 4.1 5.3 77
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Basin wide percent of average 79 113
BELLE FOURCHE
BLIND PARK 6890 1.8 5.2 35 8.6 4.7 183
NORTH RAPID CREEK 6130 1.8 -M * 8.7 -M *
WARREN PEAK 6520 2.1 5.2 40 8.1 3.8 213
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Basin wide percent of average 38 196
UPPER N. PLATTE RIVER
COLUMBINE 9400 6.5 9.5 68 9.2 10.5 88
DIVIDE PEAK 8800 6.8 9.3 73 13.4 11.6 116
ELK RIVER 8700 3.7 7.8 47 10.6 8.6 123
JOE WRIGHT 10120 7.2 10.2 71 11.5 11.4 101
NORTH FRENCH CREEK 10100 10.8 11.1 97 13.3 10.6 125
OLD BATTLE 10000 10.4 14.4 72 15.4 13.9 111
SOUTH BRUSH CREEK 8400 3.6 4.7 77 10.6 9.6 110
TOWER 10500 14.4 21.3 68 16.2 16.3 99
WEBBER SPRINGS 9200 6.7 11.9 56 11.4 12.9 88
WILLOW CREEK PASS 9540 4.8 5.5 87 6.5 6.0 108
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Basin wide percent of average 71 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 6.7 11.7 57 9.2 8.4 110
CASPER MTN. 7900 3.6 7.4 49 9.4 7.0 134
DEADMAN HILL 10220 8.7 7.7 113 8.7 7.3 119
DEER PARK 9700 6.2 -M * 9.3 -M *
LAPRELE CREEK 8320 .9 4.6 20 7.3 5.0 146
RENO HILL 8400 5.0 6.1 82 9.8 9.5 103
ROACH 9700 5.9 7.5 79 9.1 9.9 92
SAND LAKE 10080 11.8 14.7 80 13.5 9.2 147
SOUTH PASS 9040 7.0 8.1 86 8.6 7.8 110
WINDY PEAK 7840 1.7 3.2 53 8.0 4.0 200
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Basin wide percent of average 72 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.9 4.8 60 8.6 7.3 118
DIVIDE PEAK 8800 6.8 9.3 73 13.4 11.6 116
OLD BATTLE 10000 10.4 14.4 72 15.4 13.9 111
SANDSTONE RS 8150 -M 6.0 * -M 8.8 *
WHISKEY PARK 8950 7.3 12.4 59 12.9 11.4 113
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Basin wide percent of average 67 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.2 5.8 124 6.7 8.0 84
BLIND BULL SUM 8650 11.2 12.2 92 9.7 10.6 92
EAST RIM DIVIDE 7930 5.3 5.5 96 6.1 7.4 82
ELKHART PARK G.S. 9400 5.6 5.6 100 6.4 7.8 82
GROS VENTRE SUMMIT 8775 6.2 6.7 93 6.5 7.8 83
KENDALL R.S. 7740 5.9 5.7 104 6.7 7.6 88
LOOMIS PARK 8240 6.8 6.8 100 8.1 9.2 88
NEW FORK LAKE 8340 4.9 4.4 111 5.6 7.1 79
SNIDER BASIN 8250 5.6 5.8 97 6.5 7.4 88
SPRING CREEK DIVIDE 9000 10.3 11.3 91 11.3 12.9 88
TRIPLE PEAK 8500 10.5 10.6 99 12.0 15.2 79
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Basin wide percent of average 99 85
LOWER GREEN RIVER
HAMS FORK 7840 3.9 4.1 95 4.5 6.5 69
HEWINTA 9500 3.0 3.8 79 5.7 6.3 90
HICKERSON PARK 9150 2.2 2.5 88 5.0 4.7 106
HOLE-IN-ROCK 9150 2.9 2.3 126 5.5 4.7 117
INDIAN CREEK 9425 9.7 11.3 86 8.8 12.3 72
KELLEY R.S. 8180 5.7 6.5 88 7.5 9.1 82
STEEL CREEK PARK 10100 4.7 7.0 67 7.1 6.7 106
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Basin wide percent of average 86 88
UPPER BEAR RIVER
BUG LAKE 7950 5.1 8.6 59 6.5 9.3 70
HAYDEN FORK 9400 4.7 6.6 71 8.1 8.6 94
KELLEY R.S. 8180 5.7 6.5 88 7.5 9.1 82
LILY LAKE 9050 4.5 6.0 75 7.5 7.1 106
MONTE CRISTO 8960 6.8 10.7 64 10.2 12.0 85
SALT RIVER SUMMIT 7600 4.9 4.9 100 7.3 8.3 88
TRIAL LAKE 9960 4.8 10.5 46 6.1 10.8 56
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Basin wide percent of average 68 82
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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.