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: APRIL 7 , 2006
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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 20.9 17.5 119 26.4 22.2 119
COTTONWOOD CREEK 7600 30.4 24.0 127 32.4 28.6 113
GRANITE CREEK 6770 21.5 17.9 120 24.0 20.6 117
GRASSY LAKE 7265 40.4 36.5 111 43.5 37.3 117
GROS VENTRE SUMMIT 8750 12.7 14.5 88 13.5 13.5 100
LEWIS LAKE DIVIDE 7850 42.6 36.2 118 40.6 38.1 107
PHILLIPS BENCH 8200 35.6 29.8 119 35.3 30.1 117
SALT RIVER SUMMIT 7600 16.9 14.5 117 20.1 19.5 103
SNAKE RIVER STATION 6920 20.9 18.5 113 27.0 23.1 117
SPRING CREEK DIVIDE 9000 32.4 27.6 117 -M 27.5 *
THUMB DIVIDE 7980 20.0 19.0 105 19.8 19.7 101
TOGWOTEE PASS 9580 25.8 25.8 100 26.9 25.7 105
TWO OCEAN PLATEAU 9240 36.3 29.3 124 29.8 28.8 103
WILLOW CREEK 8450 36.8 31.2 118 41.5 33.6 124
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Basin wide percent of average 115 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 22.1 24.4 91 19.5 20.9 93
BLACK BEAR 8170 52.1 40.3 129 -M 41.9 *
CANYON 8090 15.1 13.9 109 18.1 16.0 113
FISHER CREEK 9100 39.6 36.1 110 37.8 37.8 100
MADISON PLATEAU 7750 -M 25.8 * -M 27.8 *
NORTHEAST ENTRANCE 7350 9.5 11.0 86 12.7 13.2 96
PARKER PEAK 9400 19.6 22.5 87 17.7 17.0 104
SYLVAN LAKE 8420 19.0 23.4 81 23.4 21.8 107
THUMB DIVIDE 7980 20.0 19.0 105 19.8 19.7 101
TWO OCEAN PLATEAU 9240 36.3 29.3 124 29.8 28.8 103
WHISKEY CREEK 6800 16.7 17.6 95 24.9 21.8 114
WHITE MILL 8700 -M 25.2 * -M 28.1 *
WOLVERINE 7650 8.3 11.3 73 9.0 13.4 67
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Basin wide percent of average 104 101
WIND RIVER
BURROUGHS CREEK 8750 14.2 14.9 95 16.3 17.0 96
COLD SPRINGS 9630 5.6 8.2 68 8.6 11.3 76
DEER PARK 9700 17.3 17.1 101 21.0 23.1 91
HOBBS PARK 10100 11.1 15.8 70 11.9 13.7 87
LITTLE WARM 9370 9.3 12.2 76 12.2 14.2 86
SOUTH PASS 9040 16.3 17.1 95 17.1 19.4 88
ST. LAWRENCE ALT 8620 3.6 7.4 49 6.6 9.5 69
TOGWOTEE PASS 9580 25.8 25.8 100 26.9 25.7 105
TOWNSEND CREEK 8700 6.7 9.2 73 9.5 12.5 76
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Basin wide percent of average 86 89
BIGHORN BASIN
BALD MTN. 9380 16.8 20.8 81 13.8 18.3 75
BEAR TRAP MEADOW 8200 4.7 5.0 94 7.8 8.8 89
BLACKWATER 9780 22.9 25.7 89 20.8 21.5 97
BONE SPRINGS DIV 9350 14.6 17.0 86 15.1 15.4 98
EVENING STAR 9200 24.7 30.9 80 28.1 26.4 106
GRAVE SPRINGS 8550 9.7 10.0 97 11.7 10.4 112
KIRWIN 9550 10.1 11.8 86 10.9 11.9 92
MARQUETTE 8760 2.3 9.7 24 7.3 10.6 69
MIDDLE POWDER 7760 12.4 12.7 98 10.0 13.1 76
OWL CREEK 8975 2.7 5.4 50 6.1 6.4 95
POWDER RIVER PASS 9480 10.1 11.3 89 12.1 13.1 92
SHELL CREEK 9580 14.6 15.4 95 13.6 14.1 96
SYLVAN LAKE 8420 19.0 23.4 81 23.4 21.8 107
SYLVAN ROAD 7120 10.9 12.6 87 16.9 18.3 92
TIMBER CREEK 7950 2.1 5.8 36 5.0 8.0 62
YOUNTS PEAK 8350 14.4 17.6 82 17.5 16.8 104
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Basin wide percent of average 82 94
SHOSHONE RIVER
BLACKWATER 9780 22.9 25.7 89 20.8 21.5 97
EVENING STAR 9200 24.7 30.9 80 28.1 26.4 106
KIRWIN 9550 10.1 11.8 86 10.9 11.9 92
MARQUETTE 8760 2.3 9.7 24 7.3 10.6 69
SYLVAN LAKE 8420 19.0 23.4 81 23.4 21.8 107
SYLVAN ROAD 7120 10.9 12.6 87 16.9 18.3 92
YOUNTS PEAK 8350 14.4 17.6 82 17.5 16.8 104
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Basin wide percent of average 79 98
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.7 5.0 94 7.8 8.8 89
BIG GOOSE 7990 6.9 11.4 61 9.2 9.4 98
BONE SPRINGS DIV 9350 14.6 17.0 86 15.1 15.4 98
BURGESS JUNCTION 7880 9.9 12.3 80 11.0 12.8 86
CLOUD PEAK RESERVOIR 9860 12.8 14.3 90 12.3 13.7 90
DOME LAKE 8880 10.3 13.2 78 11.7 13.9 84
GRAVE SPRINGS 8550 9.7 10.0 97 11.7 10.4 112
HANSEN SAWMILL 8360 3.9 6.4 61 7.2 8.8 82
MIDDLE POWDER 7760 12.4 12.7 98 10.0 13.1 76
POWDER RIVER PASS 9480 10.1 11.3 89 12.1 13.1 92
SUCKER CREEK 8880 10.6 12.5 85 14.1 14.4 98
TIE CREEK 6870 3.7 5.8 64 10.4 10.6 98
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Basin wide percent of average 83 92
BELLE FOURCHE
BLIND PARK 6890 6.6 8.2 80 11.4 11.7 97
COLE CANYON 5910 4.4 6.0 73 9.7 -M *
NORTH RAPID CREEK 6130 6.3 8.5 74 9.4 9.2 102
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Basin wide percent of average 76 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 30.9 24.9 124 34.2 26.1 131
DIVIDE PEAK 8860 19.8 20.4 97 23.1 21.5 107
ELK RIVER 8700 20.4 19.6 104 21.9 20.4 107
JOE WRIGHT 10120 22.2 22.4 99 26.2 25.9 101
NORTH FRENCH CREEK 10130 34.6 30.8 112 33.0 25.8 128
OLD BATTLE 9920 39.3 33.4 118 42.6 35.8 119
SAGE CREEK BASIN 7850 12.0 11.8 102 15.4 12.5 123
SOUTH BRUSH CREEK 8440 11.6 13.2 88 17.3 17.1 101
TOWER 10500 52.9 47.4 112 -M 39.9 *
WEBBER SPRINGS 9250 29.0 26.3 110 35.3 27.7 127
WILLOW CREEK PASS 9540 11.8 12.7 93 13.9 13.5 103
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Basin wide percent of average 108 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 26.4 25.0 106 22.4 23.1 97
CASPER MTN. 7850 15.8 15.5 102 17.2 15.4 112
DEADMAN HILL 10220 16.3 17.2 95 18.2 17.8 102
DEER PARK 9700 17.3 17.1 101 21.0 23.1 91
LAPRELE CREEK 8375 9.7 10.7 91 11.9 13.4 89
RENO HILL 8500 15.5 15.0 103 17.9 16.0 112
ROACH 9700 16.7 17.7 94 20.1 19.4 104
SAND LAKE 10050 32.6 33.7 97 31.7 25.2 126
SOUTH PASS 9040 16.3 17.1 95 17.1 19.4 88
WINDY PEAK 7900 7.8 8.1 96 10.5 11.2 94
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Basin wide percent of average 98 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.2 10.0 112 17.0 16.4 104
DIVIDE PEAK 8860 19.8 20.4 97 23.1 21.5 107
OLD BATTLE 9920 39.3 33.4 118 42.6 35.8 119
SANDSTONE RS 8150 15.9 14.2 112 22.2 19.4 114
WHISKEY PARK 8950 41.4 30.5 136 36.7 29.8 123
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Basin wide percent of average 118 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 16.0 15.0 107 16.1 14.0 115
BLIND BULL SUM 8900 29.4 28.6 103 22.2 23.0 97
EAST RIM DIVIDE 7930 11.7 13.6 86 12.3 12.5 98
ELKHART PARK G.S. 9400 15.4 13.8 112 16.2 13.9 117
GROS VENTRE SUMMIT 8750 12.7 14.5 88 13.5 13.5 100
KENDALL R.S. 7740 14.9 14.2 105 16.2 15.1 107
LOOMIS PARK 8240 20.6 17.3 119 20.8 18.1 115
NEW FORK LAKE 8340 11.7 11.3 104 11.2 11.8 95
SNIDER BASIN 8060 19.3 14.8 130 17.6 16.7 105
SPRING CREEK DIVIDE 9000 32.4 27.6 117 -M 27.5 *
TRIPLE PEAK 8500 31.1 25.5 122 31.8 25.8 123
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Basin wide percent of average 110 108
LOWER GREEN RIVER
HAMS FORK 7840 15.4 11.1 139 14.4 12.8 112
HEWINTA 9500 12.5 12.2 102 15.6 15.3 102
HICKERSON PARK 9100 5.7 8.0 71 8.5 8.4 101
HOLE-IN-ROCK 9150 8.2 7.2 114 9.3 7.9 118
INDIAN CREEK 9425 32.9 28.8 114 -M 26.5 *
KELLEY R.S. 8180 21.1 17.1 123 23.3 21.2 110
STEEL CREEK PARK 10100 17.5 16.5 106 18.0 17.1 105
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Basin wide percent of average 112 108
UPPER BEAR RIVER
BUG LAKE 7950 26.9 21.4 126 24.0 20.1 119
HAYDEN FORK 9100 23.1 16.6 139 27.0 22.0 123
KELLEY R.S. 8180 21.1 17.1 123 23.3 21.2 110
LILY LAKE 9050 15.3 13.9 110 18.1 18.3 99
MONTE CRISTO 8960 -M 30.3 * -M 26.6 *
SALT RIVER SUMMIT 7600 16.9 14.5 117 20.1 19.5 103
TRIAL LAKE 9960 32.9 25.8 128 29.3 26.0 113
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Basin wide percent of average 125 112
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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.