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 TUESDAY: APRIL 4 , 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 20.6 17.8 116 25.4 22.0 115
COTTONWOOD CREEK 7600 30.1 24.1 125 31.7 28.2 112
GRANITE CREEK 6770 21.4 18.3 117 23.6 20.3 116
GRASSY LAKE 7265 39.0 36.3 107 -M 36.9 *
GROS VENTRE SUMMIT 8750 12.7 14.4 88 13.0 13.2 98
LEWIS LAKE DIVIDE 7850 41.9 36.0 116 39.5 37.6 105
PHILLIPS BENCH 8200 35.1 29.5 119 34.7 29.8 116
SALT RIVER SUMMIT 7600 16.9 14.6 116 19.6 19.3 102
SNAKE RIVER STATION 6920 21.4 18.8 114 26.1 22.8 114
SPRING CREEK DIVIDE 9000 31.8 27.2 117 -M 27.1 *
THUMB DIVIDE 7980 19.8 19.1 104 19.2 19.4 99
TOGWOTEE PASS 9580 25.1 25.5 98 26.0 25.3 103
TWO OCEAN PLATEAU 9240 35.6 28.9 123 29.0 28.4 102
WILLOW CREEK 8450 36.7 30.9 119 40.7 33.1 123
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Basin wide percent of average 114 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 21.5 24.0 90 19.0 20.6 92
BLACK BEAR 8170 49.7 40.0 124 -M 41.4 *
CANYON 8090 15.1 13.9 109 17.5 15.8 111
FISHER CREEK 9100 39.5 35.7 111 37.1 37.3 99
MADISON PLATEAU 7750 28.3 25.6 111 33.0 27.4 120
NORTHEAST ENTRANCE 7350 10.2 11.2 91 12.4 13.0 95
PARKER PEAK 9400 18.8 22.2 85 17.0 16.7 102
SYLVAN LAKE 8420 18.3 23.1 79 22.5 21.5 105
THUMB DIVIDE 7980 19.8 19.1 104 19.2 19.4 99
TWO OCEAN PLATEAU 9240 35.6 28.9 123 29.0 28.4 102
WHISKEY CREEK 6800 16.3 17.5 93 23.7 21.5 110
WHITE MILL 8700 25.8 24.9 104 23.5 27.7 85
WOLVERINE 7650 8.5 11.5 74 9.0 13.1 69
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Basin wide percent of average 103 100
WIND RIVER
BURROUGHS CREEK 8750 14.0 14.9 94 16.1 16.7 96
COLD SPRINGS 9630 5.8 8.6 67 8.5 11.0 77
DEER PARK 9700 17.2 17.1 101 20.6 22.6 91
HOBBS PARK 10100 10.9 15.5 70 11.6 13.3 87
LITTLE WARM 9370 9.4 12.1 78 11.9 13.8 86
SOUTH PASS 9040 16.3 16.9 96 16.8 19.0 88
ST. LAWRENCE ALT 8620 3.8 7.4 51 6.5 9.2 71
TOGWOTEE PASS 9580 25.1 25.5 98 26.0 25.3 103
TOWNSEND CREEK 8700 6.7 9.0 74 9.4 12.1 78
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Basin wide percent of average 86 89
BIGHORN BASIN
BALD MTN. 9380 16.5 20.3 81 13.4 17.9 75
BEAR TRAP MEADOW 8200 5.9 5.1 116 7.8 8.6 91
BLACKWATER 9780 22.4 25.2 89 20.3 21.1 96
BONE SPRINGS DIV 9350 14.3 16.7 86 14.9 15.1 99
EVENING STAR 9200 24.9 30.5 82 27.5 25.9 106
GRAVE SPRINGS 8550 9.9 9.7 102 11.6 10.0 116
KIRWIN 9550 9.8 11.7 84 10.7 11.6 92
MARQUETTE 8760 2.4 9.3 26 7.2 10.2 71
MIDDLE POWDER 7760 12.7 12.3 103 10.0 12.7 79
OWL CREEK 8975 3.2 5.5 58 6.0 6.1 98
POWDER RIVER PASS 9480 10.0 11.1 90 12.0 12.7 94
SHELL CREEK 9580 14.4 15.2 95 13.3 13.7 97
SYLVAN LAKE 8420 18.3 23.1 79 22.5 21.5 105
SYLVAN ROAD 7120 10.9 12.7 86 16.5 18.1 91
TIMBER CREEK 7950 2.5 5.8 43 5.0 7.7 65
YOUNTS PEAK 8350 14.2 17.5 81 17.2 16.6 104
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Basin wide percent of average 83 94
SHOSHONE RIVER
BLACKWATER 9780 22.4 25.2 89 20.3 21.1 96
EVENING STAR 9200 24.9 30.5 82 27.5 25.9 106
KIRWIN 9550 9.8 11.7 84 10.7 11.6 92
MARQUETTE 8760 2.4 9.3 26 7.2 10.2 71
SYLVAN LAKE 8420 18.3 23.1 79 22.5 21.5 105
SYLVAN ROAD 7120 10.9 12.7 86 16.5 18.1 91
YOUNTS PEAK 8350 14.2 17.5 81 17.2 16.6 104
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Basin wide percent of average 79 98
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.9 5.1 116 7.8 8.6 91
BIG GOOSE 7990 6.8 11.1 61 8.9 8.9 100
BONE SPRINGS DIV 9350 14.3 16.7 86 14.9 15.1 99
BURGESS JUNCTION 7880 9.9 12.0 82 10.8 12.5 86
CLOUD PEAK RESERVOIR 9860 13.0 13.9 94 12.1 13.3 91
DOME LAKE 8880 10.5 12.9 81 11.3 13.6 83
GRAVE SPRINGS 8550 9.9 9.7 102 11.6 10.0 116
HANSEN SAWMILL 8360 4.9 6.4 77 7.2 8.5 85
MIDDLE POWDER 7760 12.7 12.3 103 10.0 12.7 79
POWDER RIVER PASS 9480 10.0 11.1 90 12.0 12.7 94
SUCKER CREEK 8880 10.7 12.2 88 13.7 14.0 98
TIE CREEK 6870 4.6 5.9 78 9.9 10.3 96
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Basin wide percent of average 88 93
BELLE FOURCHE
BLIND PARK 6890 7.4 8.5 87 10.7 11.4 94
COLE CANYON 5910 5.1 6.1 84 9.1 -M *
NORTH RAPID CREEK 6130 6.5 8.4 77 8.7 8.9 98
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Basin wide percent of average 83 96
UPPER N. PLATTE RIVER
COLUMBINE 9160 31.6 24.9 127 33.8 25.7 132
DIVIDE PEAK 8860 19.1 20.2 95 22.5 21.2 106
ELK RIVER 8700 21.5 19.6 110 21.6 20.0 108
JOE WRIGHT 10120 22.0 21.9 100 26.2 25.4 103
NORTH FRENCH CREEK 10130 34.3 30.2 114 32.6 25.3 129
OLD BATTLE 9920 38.1 32.9 116 42.1 35.3 119
SAGE CREEK BASIN 7850 12.6 11.7 108 14.7 12.3 120
SOUTH BRUSH CREEK 8440 12.7 13.2 96 17.1 16.8 102
TOWER 10500 52.0 46.6 112 -M 39.2 *
WEBBER SPRINGS 9250 29.0 26.3 110 34.5 27.2 127
WILLOW CREEK PASS 9540 12.0 12.4 97 13.8 13.2 105
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Basin wide percent of average 110 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 26.2 24.5 107 22.2 22.6 98
CASPER MTN. 7850 16.2 15.1 107 16.3 14.9 109
DEADMAN HILL 10220 16.6 16.8 99 18.1 17.4 104
DEER PARK 9700 17.2 17.1 101 20.6 22.6 91
LAPRELE CREEK 8375 9.8 10.8 91 11.6 13.0 89
RENO HILL 8500 15.3 14.6 105 17.0 15.5 110
ROACH 9700 16.9 17.5 97 19.9 19.1 104
SAND LAKE 10050 32.6 33.2 98 31.3 24.7 127
SOUTH PASS 9040 16.3 16.9 96 16.8 19.0 88
WINDY PEAK 7900 8.1 8.1 100 10.2 10.9 94
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Basin wide percent of average 100 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.3 10.5 117 16.8 16.2 104
DIVIDE PEAK 8860 19.1 20.2 95 22.5 21.2 106
OLD BATTLE 9920 38.1 32.9 116 42.1 35.3 119
SANDSTONE RS 8150 16.7 14.5 115 21.7 19.1 114
WHISKEY PARK 8950 41.9 30.5 137 -M 29.3 *
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Basin wide percent of average 118 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.5 14.8 105 15.7 13.7 115
BLIND BULL SUM 8900 29.2 28.4 103 21.8 22.8 96
EAST RIM DIVIDE 7930 11.4 13.5 84 11.8 12.4 95
ELKHART PARK G.S. 9400 14.6 13.7 107 15.3 13.7 112
GROS VENTRE SUMMIT 8750 12.7 14.4 88 13.0 13.2 98
KENDALL R.S. 7740 14.8 14.4 103 15.4 14.9 103
LOOMIS PARK 8240 20.0 17.4 115 20.0 17.8 112
NEW FORK LAKE 8340 11.1 11.3 98 10.7 11.6 92
SNIDER BASIN 8060 19.1 14.7 130 17.5 16.5 106
SPRING CREEK DIVIDE 9000 31.8 27.2 117 -M 27.1 *
TRIPLE PEAK 8500 31.1 25.3 123 31.5 25.5 124
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Basin wide percent of average 108 107
LOWER GREEN RIVER
HAMS FORK 7840 15.8 11.6 136 14.3 12.5 114
HEWINTA 9500 -M 12.1 * -M 15.0 *
HICKERSON PARK 9100 5.0 7.8 64 8.2 8.2 100
HOLE-IN-ROCK 9150 7.6 7.2 106 8.6 7.7 112
INDIAN CREEK 9425 32.3 28.5 113 -M 26.1 *
KELLEY R.S. 8180 21.0 17.1 123 22.6 20.9 108
STEEL CREEK PARK 10100 16.2 16.2 100 17.5 16.7 105
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Basin wide percent of average 111 108
UPPER BEAR RIVER
BUG LAKE 7950 25.8 21.3 121 23.2 19.8 117
HAYDEN FORK 9100 21.8 16.6 131 25.4 21.6 118
KELLEY R.S. 8180 21.0 17.1 123 22.6 20.9 108
LILY LAKE 9050 14.6 13.7 107 16.9 18.0 94
MONTE CRISTO 8960 37.1 30.2 123 34.0 26.2 130
SALT RIVER SUMMIT 7600 16.9 14.6 116 19.6 19.3 102
TRIAL LAKE 9960 31.4 25.5 123 28.7 25.6 112
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Basin wide percent of average 121 113
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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.