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: DECEMBER 21 , 2001
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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 5.7 6.7 85 10.2 8.7 117
COTTONWOOD CREEK 7600 7.8 7.9 99 10.7 11.3 95
GRANITE CREEK 6770 6.9 6.1 113 9.6 7.9 122
GRASSY LAKE 7265 11.0 12.2 90 15.5 14.4 108
GROS VENTRE SUMMIT 8775 6.5 5.9 110 5.8 5.6 104
LEWIS LAKE DIVIDE 7860 12.6 12.3 102 15.0 14.6 103
PHILLIPS BENCH 8200 11.2 10.5 107 13.0 11.1 117
SALT RIVER SUMMIT 7600 5.2 4.4 118 7.6 7.4 103
SNAKE RIVER STATION 6920 -M 6.5 * -M 9.3 *
SPRING CREEK DIVIDE 9000 11.9 10.6 112 11.7 10.8 108
THUMB DIVIDE 7980 6.0 6.3 95 8.3 7.7 108
TOGWOTEE PASS 9580 9.8 10.0 98 9.8 10.2 96
TWO OCEAN PLATEAU 9360 12.2 11.7 104 10.8 11.4 95
WILLOW CREEK 8450 9.5 12.0 79 15.2 13.1 116
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Basin wide percent of average 100 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 8.8 9.9 89 8.1 8.4 96
BLACK BEAR 8170 -M 14.7 * -M 15.1 *
CANYON 8090 5.9 5.1 116 7.1 6.8 104
FISHER CREEK 9100 13.2 14.0 94 13.0 12.9 101
MADISON PLATEAU 7750 9.9 9.5 104 13.8 10.2 135
NORTHEAST ENTRANCE 7350 2.5 4.2 60 4.6 5.6 82
PARKER PEAK 9400 7.9 9.2 86 7.0 7.6 92
SYLVAN LAKE 8420 7.9 9.1 87 10.0 10.2 98
THUMB DIVIDE 7980 6.0 6.3 95 8.3 7.7 108
TWO OCEAN PLATEAU 9360 12.2 11.7 104 10.8 11.4 95
WHISKEY CREEK 6800 6.8 6.3 108 10.8 8.4 129
WHITE MILL 8700 9.3 9.7 96 8.9 10.4 86
WOLVERINE 7650 3.3 4.8 69 4.8 5.8 83
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Basin wide percent of average 94 102
WIND RIVER
BURROUGHS CREEK 8750 6.3 5.7 111 6.9 7.0 99
COLD SPRINGS 9630 1.8 4.1 44 2.6 4.9 53
DEER PARK 9700 7.0 6.0 117 8.8 -M *
HOBBS PARK 10100 4.5 7.0 64 3.9 5.9 66
LITTLE WARM 9370 4.3 4.7 91 5.1 5.8 88
SOUTH PASS 9040 5.9 7.3 81 6.9 7.3 95
ST. LAWRENCE ALT 8620 1.1 3.5 31 2.1 4.1 51
TOGWOTEE PASS 9580 9.8 10.0 98 9.8 10.2 96
TOWNSEND CREEK 8700 1.9 3.9 49 2.5 5.5 45
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Basin wide percent of average 82 79
BIGHORN BASIN
BALD MTN. 9380 7.3 8.4 87 6.6 7.2 92
BEAR TRAP MEADOW 8200 2.5 2.3 109 4.7 4.0 118
BLACKWATER 9780 8.5 10.6 80 7.6 9.1 84
BONE SPRINGS DIV 9350 6.4 6.9 93 6.2 6.3 98
EVENING STAR 9200 10.1 12.0 84 11.7 11.4 103
GRAVE SPRINGS 8550 2.4 3.4 71 4.8 4.6 104
KIRWIN 9550 4.1 5.4 76 4.5 5.2 87
MARQUETTE 8760 2.0 4.5 44 2.4 4.5 53
MIDDLE POWDER 7760 2.5 4.9 51 4.8 5.8 83
OWL CREEK 8975 1.4 2.4 58 1.8 2.7 67
POWDER RIVER PASS 9480 4.9 4.6 107 6.2 5.2 119
SHELL CREEK 9580 7.2 6.5 111 6.8 5.7 119
SYLVAN LAKE 8420 7.9 9.1 87 10.0 10.2 98
SYLVAN ROAD 7120 3.6 5.4 67 7.8 9.7 80
TIMBER CREEK 7950 .6 2.7 22 1.8 4.0 45
YOUNTS PEAK 8350 5.9 6.8 87 6.9 6.9 100
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Basin wide percent of average 81 92
SHOSHONE RIVER
BLACKWATER 9780 8.5 10.6 80 7.6 9.1 84
EVENING STAR 9200 10.1 12.0 84 11.7 11.4 103
KIRWIN 9550 4.1 5.4 76 4.5 5.2 87
MARQUETTE 8760 2.0 4.5 44 2.4 4.5 53
SYLVAN LAKE 8420 7.9 9.1 87 10.0 10.2 98
SYLVAN ROAD 7120 3.6 5.4 67 7.8 9.7 80
YOUNTS PEAK 8350 5.9 6.8 87 6.9 6.9 100
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Basin wide percent of average 78 89
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.5 2.3 109 4.7 4.0 118
BIG GOOSE 7990 3.3 -M * 5.2 4.7 111
BONE SPRINGS DIV 9350 6.4 6.9 93 6.2 6.3 98
BURGESS JUNCTION 7880 3.1 4.8 65 4.7 5.2 90
CLOUD PEAK RESERVOIR 9860 5.1 5.0 102 6.0 6.3 95
DOME LAKE 8880 4.9 5.4 91 6.7 6.0 112
GRAVE SPRINGS 8550 2.4 3.4 71 4.8 4.6 104
HANSEN SAWMILL 8360 2.0 2.8 71 3.8 3.8 100
MIDDLE POWDER 7760 2.5 4.9 51 4.8 5.8 83
POWDER RIVER PASS 9480 4.9 4.6 107 6.2 5.2 119
SUCKER CREEK 8880 4.2 4.5 93 6.2 5.8 107
TIE CREEK 6870 1.1 1.9 58 4.6 4.2 110
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Basin wide percent of average 84 103
BELLE FOURCHE
BLIND PARK 6890 1.8 2.9 62 4.1 4.7 87
COLE CANYON 5910 .8 -M * 1.8 -M *
NORTH RAPID CREEK 6130 2.5 -M * 3.4 4.1 83
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Basin wide percent of average 62* 85
UPPER N. PLATTE RIVER
COLUMBINE 9400 5.9 8.1 73 7.8 9.5 82
DIVIDE PEAK 8800 6.0 7.7 78 7.5 8.6 87
ELK RIVER 8700 4.5 5.6 80 6.3 7.5 84
JOE WRIGHT 10120 7.3 8.4 87 7.8 10.3 76
NORTH FRENCH CREEK 10100 4.6 11.4 40 5.9 10.3 57
OLD BATTLE 10000 9.6 12.8 75 11.9 13.4 89
SAGE CREEK BASIN 7850 -M -M * -M -M *
SOUTH BRUSH CREEK 8400 2.9 4.3 67 4.0 6.8 59
TOWER 10500 11.7 17.8 66 12.6 15.1 83
WEBBER SPRINGS 9200 7.5 9.8 77 9.0 11.0 82
WILLOW CREEK PASS 9540 3.1 4.9 63 4.2 5.7 74
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Basin wide percent of average 69 78
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.8 9.1 53 5.6 8.6 65
CASPER MTN. 7900 3.9 6.1 64 5.9 6.5 91
DEADMAN HILL 10220 3.3 6.7 49 4.5 6.9 65
DEER PARK 9700 7.0 6.0 117 8.8 -M *
LAPRELE CREEK 8320 2.1 4.6 46 4.9 5.4 91
RENO HILL 8400 3.5 5.8 60 5.1 6.4 80
ROACH 9700 3.1 6.2 50 4.6 7.3 63
SAND LAKE 10080 7.4 13.0 57 7.8 9.9 79
SOUTH PASS 9040 5.9 7.3 81 6.9 7.3 95
WINDY PEAK 7840 1.5 3.1 48 4.4 4.9 90
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Basin wide percent of average 63 79
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.5 3.1 145 3.9 6.0 65
DIVIDE PEAK 8800 6.0 7.7 78 7.5 8.6 87
OLD BATTLE 10000 9.6 12.8 75 11.9 13.4 89
SANDSTONE RS 8150 3.5 4.1 85 7.4 7.6 97
WHISKEY PARK 8950 8.0 9.2 87 10.0 11.1 90
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Basin wide percent of average 86 87
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.2 5.9 122 6.4 5.7 112
BLIND BULL SUM 8650 11.2 11.1 101 10.5 9.3 113
EAST RIM DIVIDE 7930 4.3 5.0 86 6.2 4.9 127
ELKHART PARK G.S. 9400 6.1 5.3 115 6.7 5.8 116
GROS VENTRE SUMMIT 8775 6.5 5.9 110 5.8 5.6 104
KENDALL R.S. 7740 4.9 5.5 89 7.1 5.8 122
LOOMIS PARK 8240 7.7 6.8 113 8.3 7.0 119
NEW FORK LAKE 8340 4.4 4.5 98 5.3 5.1 104
SNIDER BASIN 8250 3.9 5.8 67 6.4 6.6 97
SPRING CREEK DIVIDE 9000 11.9 10.6 112 11.7 10.8 108
TRIPLE PEAK 8500 9.9 10.0 99 11.5 9.4 122
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Basin wide percent of average 102 113
LOWER GREEN RIVER
HAMS FORK 7840 5.3 4.4 120 4.9 4.9 100
HEWINTA 9500 3.3 3.3 100 6.6 6.2 106
HICKERSON PARK 9150 2.0 2.4 83 4.1 3.8 108
HOLE-IN-ROCK 9150 2.5 2.2 114 4.0 3.5 114
INDIAN CREEK 9425 11.3 10.5 108 9.9 10.2 97
KELLEY R.S. 8180 6.9 6.4 108 8.8 8.4 105
STEEL CREEK PARK 10100 5.5 5.7 96 6.0 6.6 91
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Basin wide percent of average 105 102
UPPER BEAR RIVER
BUG LAKE 7950 7.0 6.7 104 9.2 7.9 116
HAYDEN FORK 9400 6.0 5.1 118 10.0 8.5 118
KELLEY R.S. 8180 6.9 6.4 108 8.8 8.4 105
LILY LAKE 9050 4.8 4.5 107 7.8 7.5 104
MONTE CRISTO 8960 9.2 8.8 105 11.3 10.2 111
SALT RIVER SUMMIT 7600 5.2 4.4 118 7.6 7.4 103
TRIAL LAKE 9960 9.1 8.7 105 12.0 9.5 126
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Basin wide percent of average 108 112
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.