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 8 , 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 9.7 9.0 108 11.8 12.4 95
COTTONWOOD CREEK 7600 9.3 10.2 91 12.4 13.1 95
GRANITE CREEK 6770 7.4 8.5 87 9.3 13.0 72
GRASSY LAKE 7265 17.9 16.4 109 19.2 20.1 96
GROS VENTRE SUMMIT 8775 6.5 7.8 83 6.9 8.8 78
LEWIS LAKE DIVIDE 7860 15.9 16.0 99 18.2 20.4 89
PHILLIPS BENCH 8200 13.2 13.4 99 13.7 15.9 86
SALT RIVER SUMMIT 7600 5.2 6.1 85 7.5 9.4 80
SNAKE RIVER STATION 6920 9.1 8.8 103 11.8 14.1 84
SPRING CREEK DIVIDE 9000 11.3 13.2 86 11.8 14.7 80
THUMB DIVIDE 7980 10.5 8.3 127 10.7 11.6 92
TOGWOTEE PASS 9580 -M 12.5 * 14.9 15.2 98
TWO OCEAN PLATEAU 9360 17.7 14.0 126 15.9 17.1 93
WILLOW CREEK 8450 12.7 14.8 86 17.7 17.2 103
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Basin wide percent of average 100 90
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 13.8 12.6 110 12.6 9.3 135
BLACK BEAR 7950 21.6 17.7 122 20.3 19.3 105
CANYON 7940 8.6 6.1 141 9.6 7.6 126
FISHER CREEK 9100 20.9 17.7 118 18.9 17.9 106
MADISON PLATEAU 7750 -M 11.6 * 14.2 13.0 109
NORTHEAST ENTRANCE 7350 6.5 4.6 141 8.2 6.4 128
PARKER PEAK 9400 12.8 11.5 111 -M 8.3 *
SYLVAN LAKE 8420 13.7 11.8 116 16.2 10.6 153
THUMB DIVIDE 7980 10.5 8.3 127 10.7 11.6 92
TWO OCEAN PLATEAU 9360 17.7 14.0 126 15.9 17.1 93
WHISKEY CREEK 6800 9.1 8.0 114 11.6 10.8 107
WHITE MILL 8700 13.3 12.8 104 12.5 14.3 87
WOLVERINE 7650 9.6 5.9 163 7.3 6.9 106
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Basin wide percent of average 121 109
WIND RIVER
BURROUGHS CREEK 8750 8.7 7.9 110 9.6 8.8 109
COLD SPRINGS 9630 5.2 4.8 108 6.8 5.8 117
DEER PARK 9700 6.1 -M * 9.2 -M *
HOBBS PARK 10100 8.2 8.3 99 8.6 7.4 116
LITTLE WARM 9620 6.7 5.6 120 7.8 7.1 110
SOUTH PASS 9040 7.1 9.1 78 8.7 8.6 101
ST. LAWRENCE ALT 8620 3.9 3.7 105 6.6 5.3 125
TOGWOTEE PASS 9580 -M 12.5 * 14.9 15.2 98
TOWNSEND CREEK 8700 4.3 4.9 88 6.8 6.3 108
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Basin wide percent of average 100 108
BIGHORN BASIN
BALD MTN. 9375 12.1 11.1 109 11.4 9.4 121
BEAR TRAP MEADOW 7900 3.7 4.0 93 6.4 4.5 142
BLACKWATER 9780 16.0 10.9 147 14.2 9.6 148
BONE SPRINGS DIV 9350 8.9 8.5 105 9.2 7.5 123
EVENING STAR 9200 18.3 14.2 129 19.1 11.8 162
GRAVE SPRINGS 8550 4.1 4.9 84 7.1 5.4 131
KIRWIN 9550 6.7 5.6 120 8.0 5.6 143
MARQUETTE 8760 4.9 4.2 117 6.0 4.9 122
MIDDLE POWDER 7760 4.1 6.3 65 10.1 6.4 158
OWL CREEK 8975 3.4 2.2 155 4.2 3.0 140
POWDER RIVER PASS 9480 7.0 5.6 125 8.9 6.1 146
SHELL CREEK 9580 10.1 8.2 123 9.1 7.0 130
SYLVAN LAKE 8420 13.7 11.8 116 16.2 10.6 153
SYLVAN ROAD 8120 9.2 6.4 144 10.9 8.7 125
TIMBER CREEK 7950 3.3 2.7 122 5.3 3.5 151
YOUNTS PEAK 8350 11.2 9.7 115 9.3 8.7 107
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Basin wide percent of average 118 138
SHOSHONE RIVER
BLACKWATER 9780 16.0 10.9 147 14.2 9.6 148
EVENING STAR 9200 18.3 14.2 129 19.1 11.8 162
KIRWIN 9550 6.7 5.6 120 8.0 5.6 143
MARQUETTE 8760 4.9 4.2 117 6.0 4.9 122
SYLVAN LAKE 8420 13.7 11.8 116 16.2 10.6 153
SYLVAN ROAD 8120 9.2 6.4 144 10.9 8.7 125
YOUNTS PEAK 8350 11.2 9.7 115 9.3 8.7 107
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Basin wide percent of average 127 140
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.7 4.0 93 6.4 4.5 142
BIG GOOSE 7990 3.4 -M * 6.2 -M *
BONE SPRINGS DIV 9350 8.9 8.5 105 9.2 7.5 123
BURGESS JUNCTION 7880 4.8 6.0 80 6.7 5.9 114
CLOUD PEAK RESERVOIR 9860 8.5 6.2 137 7.7 6.6 117
DOME LAKE 8880 4.9 7.0 70 6.8 7.3 93
GRAVE SPRINGS 8550 4.1 4.9 84 7.1 5.4 131
HANSEN SAWMILL 8760 3.3 3.6 92 5.3 4.1 129
MIDDLE POWDER 7760 4.1 6.3 65 10.1 6.4 158
POWDER RIVER PASS 9480 7.0 5.6 125 8.9 6.1 146
SUCKER CREEK 8880 5.9 5.7 104 8.2 7.0 117
TIE CREEK 6870 2.0 -M * 5.4 5.7 95
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Basin wide percent of average 96 123
BELLE FOURCHE
BLIND PARK 6890 4.0 5.8 69 11.1 5.1 218
NORTH RAPID CREEK 6130 3.4 -M * 10.0 -M *
WARREN PEAK 6520 4.8 5.8 83 10.0 4.2 238
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Basin wide percent of average 76 227
UPPER N. PLATTE RIVER
COLUMBINE 9400 8.4 11.3 74 10.7 12.1 88
DIVIDE PEAK 8800 8.5 10.5 81 14.5 12.8 113
ELK RIVER 8700 4.9 9.2 53 11.2 9.6 117
JOE WRIGHT 10120 9.3 11.3 82 13.9 12.7 109
NORTH FRENCH CREEK 10100 14.4 12.5 115 16.5 11.8 140
OLD BATTLE 10000 12.0 16.1 75 17.7 15.4 115
SOUTH BRUSH CREEK 8400 5.6 5.4 104 12.4 10.1 123
TOWER 10500 17.6 23.2 76 19.0 18.4 103
WEBBER SPRINGS 9200 8.2 13.5 61 12.9 14.0 92
WILLOW CREEK PASS 9540 4.8 6.1 79 6.9 6.5 106
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Basin wide percent of average 79 110
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.0 13.0 69 11.7 9.4 124
CASPER MTN. 7900 4.6 7.9 58 10.2 7.4 138
DEADMAN HILL 10220 -M 8.7 * 10.1 8.1 125
DEER PARK 9700 6.1 -M * 9.2 -M *
LAPRELE CREEK 8320 1.6 5.2 31 7.8 5.7 137
RENO HILL 8400 6.3 6.8 93 10.6 10.1 105
ROACH 9700 7.5 8.5 88 10.6 11.1 95
SAND LAKE 10080 15.9 16.6 96 16.5 10.2 162
SOUTH PASS 9040 7.1 9.1 78 8.7 8.6 101
WINDY PEAK 7840 2.2 3.5 63 8.0 4.5 178
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Basin wide percent of average 77 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.6 5.6 82 9.4 8.3 113
DIVIDE PEAK 8800 8.5 10.5 81 14.5 12.8 113
OLD BATTLE 10000 12.0 16.1 75 17.7 15.4 115
SANDSTONE RS 8150 -M 7.0 * -M 10.0 *
WHISKEY PARK 8950 8.6 14.2 61 15.0 13.7 109
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Basin wide percent of average 73 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.2 6.9 104 6.7 9.0 74
BLIND BULL SUM 8650 11.8 14.2 83 10.1 12.2 83
EAST RIM DIVIDE 7930 5.6 6.6 85 6.2 8.4 74
ELKHART PARK G.S. 9400 5.8 6.6 88 6.5 8.8 74
GROS VENTRE SUMMIT 8775 6.5 7.8 83 6.9 8.8 78
KENDALL R.S. 7740 6.1 7.0 87 6.8 8.6 79
LOOMIS PARK 8240 7.1 8.2 87 8.6 10.5 82
NEW FORK LAKE 8340 5.0 5.4 93 5.7 8.0 71
SNIDER BASIN 8250 5.9 7.0 84 6.7 8.4 80
SPRING CREEK DIVIDE 9000 11.3 13.2 86 11.8 14.7 80
TRIPLE PEAK 8500 11.1 12.5 89 12.7 17.2 74
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Basin wide percent of average 87 77
LOWER GREEN RIVER
HAMS FORK 7840 4.1 5.3 77 4.8 7.4 65
HEWINTA 9500 3.3 4.5 73 6.1 6.9 88
HICKERSON PARK 9150 2.3 2.8 82 5.1 5.1 100
HOLE-IN-ROCK 9150 2.8 2.5 112 5.5 5.1 108
INDIAN CREEK 9425 10.3 13.2 78 9.3 13.9 67
KELLEY R.S. 8180 6.1 7.7 79 7.7 10.4 74
STEEL CREEK PARK 10100 5.1 7.9 65 7.3 7.2 101
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Basin wide percent of average 77 82
UPPER BEAR RIVER
BUG LAKE 7950 5.0 9.9 51 6.8 10.2 67
HAYDEN FORK 9400 4.8 7.8 62 8.3 9.5 87
KELLEY R.S. 8180 6.1 7.7 79 7.7 10.4 74
LILY LAKE 9050 4.9 6.7 73 7.9 7.7 103
MONTE CRISTO 8960 7.4 12.7 58 10.6 13.2 80
SALT RIVER SUMMIT 7600 5.2 6.1 85 7.5 9.4 80
TRIAL LAKE 9960 5.1 12.2 42 6.5 11.9 55
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Basin wide percent of average 61 76
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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.