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 SATURDAY: DECEMBER 22 , 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 5.6 6.8 82 10.2 8.9 115
COTTONWOOD CREEK 7600 7.9 8.1 98 10.7 11.5 93
GRANITE CREEK 6770 6.9 6.2 111 9.0 8.0 112
GRASSY LAKE 7265 11.0 12.4 89 15.6 14.6 107
GROS VENTRE SUMMIT 8775 6.5 6.0 108 5.9 5.6 105
LEWIS LAKE DIVIDE 7860 12.6 12.5 101 15.0 14.8 101
PHILLIPS BENCH 8200 11.2 10.7 105 13.0 11.3 115
SALT RIVER SUMMIT 7600 5.2 4.5 116 7.6 7.5 101
SNAKE RIVER STATION 6920 -M 6.7 * -M 9.4 *
SPRING CREEK DIVIDE 9000 11.9 10.8 110 11.6 11.0 105
THUMB DIVIDE 7980 6.0 6.4 94 8.3 7.8 106
TOGWOTEE PASS 9580 9.8 10.2 96 9.8 10.4 94
TWO OCEAN PLATEAU 9360 12.3 11.9 103 10.8 11.6 93
WILLOW CREEK 8450 9.5 12.2 78 15.3 13.3 115
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Basin wide percent of average 98 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 8.9 10.1 88 8.2 8.5 96
BLACK BEAR 8170 -M 14.9 * -M 15.3 *
CANYON 8090 6.0 5.2 115 7.2 6.9 104
FISHER CREEK 9100 13.2 14.2 93 13.0 13.1 99
MADISON PLATEAU 7750 9.9 9.7 102 13.8 10.4 133
NORTHEAST ENTRANCE 7350 2.6 4.2 62 4.7 5.7 82
PARKER PEAK 9400 8.0 9.4 85 7.1 7.7 92
SYLVAN LAKE 8420 7.9 9.2 86 10.2 10.4 98
THUMB DIVIDE 7980 6.0 6.4 94 8.3 7.8 106
TWO OCEAN PLATEAU 9360 12.3 11.9 103 10.8 11.6 93
WHISKEY CREEK 6800 6.8 6.4 106 10.8 8.5 127
WHITE MILL 8700 -M 9.8 * -M 10.6 *
WOLVERINE 7650 3.3 4.9 67 4.9 5.9 83
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Basin wide percent of average 93 103
WIND RIVER
BURROUGHS CREEK 8750 6.3 5.8 109 6.8 7.1 96
COLD SPRINGS 9630 1.7 4.2 40 2.5 5.0 50
DEER PARK 9700 6.9 6.1 113 8.8 -M *
HOBBS PARK 10100 4.3 7.0 61 3.6 5.9 61
LITTLE WARM 9370 4.2 4.7 89 5.1 5.9 86
SOUTH PASS 9040 5.9 7.4 80 6.8 7.4 92
ST. LAWRENCE ALT 8620 -M 3.5 * 2.1 4.1 51
TOGWOTEE PASS 9580 9.8 10.2 96 9.8 10.4 94
TOWNSEND CREEK 8700 1.8 4.0 45 2.2 5.6 39
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Basin wide percent of average 83 76
BIGHORN BASIN
BALD MTN. 9380 7.4 8.5 87 6.6 7.3 90
BEAR TRAP MEADOW 8200 2.5 2.3 109 4.6 4.1 112
BLACKWATER 9780 8.4 10.8 78 7.6 9.2 83
BONE SPRINGS DIV 9350 6.3 7.0 90 6.2 6.4 97
EVENING STAR 9200 10.1 12.2 83 11.7 11.5 102
GRAVE SPRINGS 8550 2.4 3.5 69 4.6 4.7 98
KIRWIN 9550 4.0 5.4 74 4.2 5.3 79
MARQUETTE 8760 1.8 4.6 39 2.0 4.5 44
MIDDLE POWDER 7760 2.5 5.0 50 4.8 5.8 83
OWL CREEK 8975 1.3 2.5 52 1.7 2.7 63
POWDER RIVER PASS 9480 4.8 4.7 102 6.2 5.3 117
SHELL CREEK 9580 7.2 6.5 111 6.7 5.8 116
SYLVAN LAKE 8420 7.9 9.2 86 10.2 10.4 98
SYLVAN ROAD 7120 3.6 5.4 67 7.8 9.9 79
TIMBER CREEK 7950 .5 2.8 18 1.8 4.0 45
YOUNTS PEAK 8350 5.9 6.9 86 6.9 7.0 99
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Basin wide percent of average 79 90
SHOSHONE RIVER
BLACKWATER 9780 8.4 10.8 78 7.6 9.2 83
EVENING STAR 9200 10.1 12.2 83 11.7 11.5 102
KIRWIN 9550 4.0 5.4 74 4.2 5.3 79
MARQUETTE 8760 1.8 4.6 39 2.0 4.5 44
SYLVAN LAKE 8420 7.9 9.2 86 10.2 10.4 98
SYLVAN ROAD 7120 3.6 5.4 67 7.8 9.9 79
YOUNTS PEAK 8350 5.9 6.9 86 6.9 7.0 99
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Basin wide percent of average 77 87
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.5 2.3 109 4.6 4.1 112
BIG GOOSE 7990 3.2 -M * 5.2 4.7 111
BONE SPRINGS DIV 9350 6.3 7.0 90 6.2 6.4 97
BURGESS JUNCTION 7880 3.1 4.9 63 4.6 5.3 87
CLOUD PEAK RESERVOIR 9860 5.0 5.1 98 5.9 6.4 92
DOME LAKE 8880 4.7 5.5 85 6.8 6.1 111
GRAVE SPRINGS 8550 2.4 3.5 69 4.6 4.7 98
HANSEN SAWMILL 8360 1.8 2.9 62 3.7 3.9 95
MIDDLE POWDER 7760 2.5 5.0 50 4.8 5.8 83
POWDER RIVER PASS 9480 4.8 4.7 102 6.2 5.3 117
SUCKER CREEK 8880 4.0 4.6 87 6.0 5.9 102
TIE CREEK 6870 1.1 1.9 58 4.6 4.3 107
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Basin wide percent of average 81 100
BELLE FOURCHE
BLIND PARK 6890 1.8 2.9 62 3.9 4.8 81
COLE CANYON 5910 .6 -M * 1.7 -M *
NORTH RAPID CREEK 6130 2.4 -M * 3.3 4.1 80
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Basin wide percent of average 62* 81
UPPER N. PLATTE RIVER
COLUMBINE 9400 6.3 8.3 76 7.9 9.7 81
DIVIDE PEAK 8800 5.9 7.8 76 6.8 8.7 78
ELK RIVER 8700 4.5 5.8 78 6.2 7.6 82
JOE WRIGHT 10120 7.6 8.5 89 7.7 10.4 74
NORTH FRENCH CREEK 10100 4.5 11.6 39 5.8 10.4 56
OLD BATTLE 10000 9.6 13.0 74 11.7 13.6 86
SAGE CREEK BASIN 7850 -M -M * -M -M *
SOUTH BRUSH CREEK 8400 2.9 4.4 66 3.9 6.9 57
TOWER 10500 12.0 18.1 66 12.6 15.3 82
WEBBER SPRINGS 9200 7.5 10.0 75 8.9 11.2 79
WILLOW CREEK PASS 9540 3.3 5.0 66 4.3 5.7 75
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Basin wide percent of average 69 76
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.7 9.2 51 5.6 8.7 64
CASPER MTN. 7900 3.9 6.2 63 5.8 6.6 88
DEADMAN HILL 10220 3.3 6.8 49 4.5 7.0 64
DEER PARK 9700 6.9 6.1 113 8.8 -M *
LAPRELE CREEK 8320 -M 4.7 * -M 5.5 *
RENO HILL 8400 3.5 5.9 59 4.9 6.4 77
ROACH 9700 3.0 6.3 48 4.7 7.4 64
SAND LAKE 10080 7.3 13.1 56 7.8 10.0 78
SOUTH PASS 9040 5.9 7.4 80 6.8 7.4 92
WINDY PEAK 7840 1.4 3.1 45 4.2 4.9 86
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Basin wide percent of average 62 76
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.3 3.2 134 3.7 6.1 61
DIVIDE PEAK 8800 5.9 7.8 76 6.8 8.7 78
OLD BATTLE 10000 9.6 13.0 74 11.7 13.6 86
SANDSTONE RS 8150 3.5 4.2 83 7.2 7.7 94
WHISKEY PARK 8950 7.9 9.4 84 9.9 11.3 88
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Basin wide percent of average 83 83
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.2 6.0 120 6.3 5.8 109
BLIND BULL SUM 8650 11.3 11.3 100 10.5 9.4 112
EAST RIM DIVIDE 7930 4.3 5.1 84 6.2 5.0 124
ELKHART PARK G.S. 9400 6.0 5.4 111 6.7 5.9 114
GROS VENTRE SUMMIT 8775 6.5 6.0 108 5.9 5.6 105
KENDALL R.S. 7740 4.9 5.6 88 7.1 5.9 120
LOOMIS PARK 8240 7.7 6.9 112 8.3 7.1 117
NEW FORK LAKE 8340 4.4 4.6 96 5.2 5.2 100
SNIDER BASIN 8250 3.9 5.9 66 6.5 6.7 97
SPRING CREEK DIVIDE 9000 11.9 10.8 110 11.6 11.0 105
TRIPLE PEAK 8500 9.8 10.1 97 11.6 9.5 122
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Basin wide percent of average 100 111
LOWER GREEN RIVER
HAMS FORK 7840 5.3 4.5 118 4.9 5.0 98
HEWINTA 9500 3.2 3.4 94 6.5 6.2 105
HICKERSON PARK 9150 1.9 2.4 79 3.8 3.9 97
HOLE-IN-ROCK 9150 2.4 2.3 104 3.7 3.5 106
INDIAN CREEK 9425 11.2 10.7 105 9.9 10.3 96
KELLEY R.S. 8180 6.9 6.5 106 8.8 8.5 104
STEEL CREEK PARK 10100 5.4 5.8 93 5.8 6.7 87
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Basin wide percent of average 102 98
UPPER BEAR RIVER
BUG LAKE 7950 7.0 6.8 103 9.2 8.0 115
HAYDEN FORK 9400 6.1 5.2 117 9.8 8.6 114
KELLEY R.S. 8180 6.9 6.5 106 8.8 8.5 104
LILY LAKE 9050 4.9 4.6 107 7.7 7.6 101
MONTE CRISTO 8960 9.1 9.0 101 11.2 10.4 108
SALT RIVER SUMMIT 7600 5.2 4.5 116 7.6 7.5 101
TRIAL LAKE 9960 9.1 8.9 102 12.0 9.6 125
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Basin wide percent of average 106 110
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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.