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: JANUARY 4 , 1999
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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 8.7 8.4 104 10.9 11.7 93
COTTONWOOD CREEK 7600 9.0 9.4 96 12.1 12.4 98
GRANITE CREEK 6770 6.9 7.8 88 8.9 12.3 72
GRASSY LAKE 7265 16.1 15.2 106 17.4 19.0 92
GROS VENTRE SUMMIT 8775 6.3 7.3 86 6.7 8.3 81
LEWIS LAKE DIVIDE 7860 14.7 14.7 100 17.1 19.3 89
PHILLIPS BENCH 8200 12.0 12.3 98 12.5 15.0 83
SALT RIVER SUMMIT 7600 4.9 5.5 89 7.3 8.9 82
SNAKE RIVER STATION 6920 8.1 8.1 100 10.7 13.4 80
SPRING CREEK DIVIDE 9000 10.8 12.3 88 11.4 13.9 82
THUMB DIVIDE 7980 10.1 7.7 131 10.2 11.0 93
TOGWOTEE PASS 9580 -M 11.7 * 13.5 14.4 94
TWO OCEAN PLATEAU 9360 16.4 13.2 124 14.9 16.2 92
WILLOW CREEK 8450 12.1 13.7 88 17.5 16.3 107
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Basin wide percent of average 100 89
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 11.9 12.0 99 10.8 8.8 123
BLACK BEAR 7950 20.1 16.5 122 19.4 18.1 107
CANYON 7940 7.7 5.6 138 8.7 7.2 121
FISHER CREEK 9100 18.3 16.5 111 16.3 16.8 97
MADISON PLATEAU 7750 -M 10.7 * 13.2 12.2 108
NORTHEAST ENTRANCE 7350 5.1 4.3 119 6.7 6.0 112
PARKER PEAK 9400 11.3 11.0 103 -M 7.9 *
SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141
THUMB DIVIDE 7980 10.1 7.7 131 10.2 11.0 93
TWO OCEAN PLATEAU 9360 16.4 13.2 124 14.9 16.2 92
WHISKEY CREEK 6800 8.5 7.4 115 10.7 10.2 105
WHITE MILL 8700 11.4 12.0 95 10.7 13.4 80
WOLVERINE 7650 8.0 5.5 145 6.5 6.6 98
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Basin wide percent of average 114 104
WIND RIVER
BURROUGHS CREEK 8750 7.9 7.4 107 8.6 8.4 102
COLD SPRINGS 9630 4.9 4.6 107 6.6 5.6 118
DEER PARK 9700 6.2 -M * 9.2 -M *
HOBBS PARK 10100 8.1 8.0 101 8.6 7.1 121
LITTLE WARM 9620 6.1 5.3 115 7.2 6.8 106
SOUTH PASS 9040 7.0 8.6 81 8.6 8.3 104
ST. LAWRENCE ALT 8620 3.8 3.5 109 6.6 5.1 129
TOGWOTEE PASS 9580 -M 11.7 * 13.5 14.4 94
TOWNSEND CREEK 8700 4.0 4.7 85 6.6 6.0 110
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Basin wide percent of average 99 107
BIGHORN BASIN
BALD MTN. 9375 8.8 10.6 83 8.4 9.0 93
BEAR TRAP MEADOW 7900 3.4 3.8 89 6.1 4.4 139
BLACKWATER 9780 15.0 10.3 146 13.2 9.1 145
BONE SPRINGS DIV 9350 7.0 8.1 86 7.5 7.1 106
EVENING STAR 9200 16.1 13.4 120 16.6 11.2 148
GRAVE SPRINGS 8550 3.7 4.7 79 6.9 5.2 133
KIRWIN 9550 6.5 5.4 120 7.7 5.4 143
MARQUETTE 8760 4.8 4.0 120 5.8 4.8 121
MIDDLE POWDER 7760 3.7 5.9 63 9.7 6.2 156
OWL CREEK 8975 3.4 2.0 170 4.1 2.9 141
POWDER RIVER PASS 9480 4.8 5.3 91 6.8 5.8 117
SHELL CREEK 9580 7.7 7.8 99 6.9 6.6 105
SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141
SYLVAN ROAD 8120 7.7 6.1 126 9.5 8.3 114
TIMBER CREEK 7950 3.3 2.5 132 5.3 3.4 156
YOUNTS PEAK 8350 10.1 9.2 110 8.8 8.3 106
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Basin wide percent of average 107 128
SHOSHONE RIVER
BLACKWATER 9780 15.0 10.3 146 13.2 9.1 145
EVENING STAR 9200 16.1 13.4 120 16.6 11.2 148
KIRWIN 9550 6.5 5.4 120 7.7 5.4 143
MARQUETTE 8760 4.8 4.0 120 5.8 4.8 121
SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141
SYLVAN ROAD 8120 7.7 6.1 126 9.5 8.3 114
YOUNTS PEAK 8350 10.1 9.2 110 8.8 8.3 106
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Basin wide percent of average 121 133
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.4 3.8 89 6.1 4.4 139
BIG GOOSE 7990 3.1 -M * 6.1 -M *
BONE SPRINGS DIV 9350 7.0 8.1 86 7.5 7.1 106
BURGESS JUNCTION 7880 4.1 5.7 72 6.2 5.7 109
CLOUD PEAK RESERVOIR 9860 7.6 5.8 131 7.2 6.3 114
DOME LAKE 8880 4.1 6.6 62 6.0 7.1 85
GRAVE SPRINGS 8550 3.7 4.7 79 6.9 5.2 133
HANSEN SAWMILL 8760 3.0 3.4 88 5.2 4.0 130
MIDDLE POWDER 7760 3.7 5.9 63 9.7 6.2 156
POWDER RIVER PASS 9480 4.8 5.3 91 6.8 5.8 117
SUCKER CREEK 8880 4.9 5.4 91 7.2 6.7 107
TIE CREEK 6870 1.3 -M * 4.6 5.5 84
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Basin wide percent of average 85 115
BELLE FOURCHE
BLIND PARK 6890 2.3 5.5 42 9.2 4.9 188
NORTH RAPID CREEK 6130 2.3 -M * 8.8 -M *
WARREN PEAK 6520 2.9 5.5 53 8.3 4.0 208
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Basin wide percent of average 47 197
UPPER N. PLATTE RIVER
COLUMBINE 9400 7.5 10.4 72 9.7 11.3 86
DIVIDE PEAK 8800 7.7 9.9 78 13.9 12.3 113
ELK RIVER 8700 3.9 8.6 45 10.3 9.2 112
JOE WRIGHT 10120 8.1 10.8 75 12.7 12.1 105
NORTH FRENCH CREEK 10100 12.3 11.9 103 14.8 11.3 131
OLD BATTLE 10000 11.2 15.4 73 16.2 14.7 110
SOUTH BRUSH CREEK 8400 4.1 5.0 82 11.4 10.0 114
TOWER 10500 16.1 22.4 72 17.7 17.4 102
WEBBER SPRINGS 9200 7.2 12.7 57 11.9 13.5 88
WILLOW CREEK PASS 9540 4.8 5.9 81 6.2 6.3 98
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Basin wide percent of average 73 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.0 12.4 56 9.9 8.9 111
CASPER MTN. 7900 4.2 7.7 55 9.8 7.2 136
DEADMAN HILL 10220 8.4 8.2 102 9.4 7.7 122
DEER PARK 9700 6.2 -M * 9.2 -M *
LAPRELE CREEK 8320 1.3 4.9 27 7.5 5.3 142
RENO HILL 8400 6.0 6.4 94 10.2 9.9 103
ROACH 9700 6.4 8.0 80 9.5 10.6 90
SAND LAKE 10080 13.8 15.7 88 15.0 9.7 155
SOUTH PASS 9040 7.0 8.6 81 8.6 8.3 104
WINDY PEAK 7840 1.7 3.4 50 7.7 4.3 179
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Basin wide percent of average 74 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.9 5.2 75 9.1 7.8 117
DIVIDE PEAK 8800 7.7 9.9 78 13.9 12.3 113
OLD BATTLE 10000 11.2 15.4 73 16.2 14.7 110
SANDSTONE RS 8150 -M 6.5 * -M 9.4 *
WHISKEY PARK 8950 7.3 13.4 54 13.6 12.6 108
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Basin wide percent of average 69 111
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.0 6.4 109 6.4 8.6 74
BLIND BULL SUM 8650 11.4 13.2 86 9.8 11.5 85
EAST RIM DIVIDE 7930 5.3 6.1 87 6.0 7.9 76
ELKHART PARK G.S. 9400 5.6 6.1 92 6.4 8.4 76
GROS VENTRE SUMMIT 8775 6.3 7.3 86 6.7 8.3 81
KENDALL R.S. 7740 6.0 6.4 94 6.5 8.1 80
LOOMIS PARK 8240 6.9 7.5 92 8.2 9.9 83
NEW FORK LAKE 8340 4.9 4.9 100 5.4 7.6 71
SNIDER BASIN 8250 5.7 6.4 89 6.5 7.9 82
SPRING CREEK DIVIDE 9000 10.8 12.3 88 11.4 13.9 82
TRIPLE PEAK 8500 10.9 11.6 94 12.5 16.3 77
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Basin wide percent of average 92 79
LOWER GREEN RIVER
HAMS FORK 7840 4.0 4.7 85 4.8 7.0 69
HEWINTA 9500 3.2 4.2 76 6.1 6.6 92
HICKERSON PARK 9150 2.4 2.7 89 5.1 4.9 104
HOLE-IN-ROCK 9150 2.9 2.4 121 5.5 4.9 112
INDIAN CREEK 9425 10.0 12.3 81 8.9 13.2 67
KELLEY R.S. 8180 5.9 7.1 83 7.5 9.8 77
STEEL CREEK PARK 10100 5.0 7.5 67 7.2 7.0 103
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Basin wide percent of average 82 84
UPPER BEAR RIVER
BUG LAKE 7950 5.1 9.3 55 6.7 9.8 68
HAYDEN FORK 9400 4.9 7.2 68 8.3 9.1 91
KELLEY R.S. 8180 5.9 7.1 83 7.5 9.8 77
LILY LAKE 9050 4.8 6.4 75 8.0 7.4 108
MONTE CRISTO 8960 7.4 11.7 63 10.6 12.7 83
SALT RIVER SUMMIT 7600 4.9 5.5 89 7.3 8.9 82
TRIAL LAKE 9960 5.1 11.4 45 6.6 11.4 58
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Basin wide percent of average 65 80
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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.