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 SUNDAY: MAY 15 , 2005
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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 .0 6.5 0 17.6 25.6 69
COTTONWOOD CREEK 7600 9.4 13.9 68 28.6 33.7 85
GRANITE CREEK 6770 .1 7.8 1 19.1 23.5 81
GRASSY LAKE 7265 11.9 26.5 45 29.4 42.8 69
GROS VENTRE SUMMIT 8750 8.6 9.9 87 14.0 16.4 85
LEWIS LAKE DIVIDE 7850 13.0 29.0 45 25.9 43.3 60
PHILLIPS BENCH 8200 20.3 24.1 84 28.2 34.7 81
SALT RIVER SUMMIT 7600 5.1 4.9 104 21.1 22.7 93
SNAKE RIVER STATION 6920 .2 5.7 4 16.2 26.8 60
SPRING CREEK DIVIDE 9000 25.3 24.7 102 27.3 31.5 87
THUMB DIVIDE 7980 2.9 9.7 30 15.8 23.3 68
TOGWOTEE PASS 9580 19.4 27.4 71 21.7 30.7 71
TWO OCEAN PLATEAU 9240 26.5 30.7 86 22.8 34.0 67
WILLOW CREEK 8450 19.8 25.3 78 38.2 39.9 96
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Basin wide percent of average 66 76
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.4 25.5 72 17.9 25.1 71
BLACK BEAR 8170 31.7 36.5 87 36.1 47.8 76
CANYON 8090 2.4 7.1 34 12.8 19.0 67
FISHER CREEK 9100 24.8 36.6 68 29.4 44.1 67
MADISON PLATEAU 7750 16.0 19.5 82 24.8 32.2 77
NORTHEAST ENTRANCE 7350 .0 3.3 0 9.9 16.1 61
PARKER PEAK 9400 18.2 24.0 76 17.0 21.2 80
SYLVAN LAKE 8420 8.9 20.3 44 20.6 26.6 77
THUMB DIVIDE 7980 2.9 9.7 30 15.8 23.3 68
TWO OCEAN PLATEAU 9240 26.5 30.7 86 22.8 34.0 67
WHISKEY CREEK 6800 6.9 9.8 70 19.5 25.6 76
WHITE MILL 8700 18.1 24.7 73 19.2 33.0 58
WOLVERINE 7650 .1 3.2 3 10.9 16.6 66
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Basin wide percent of average 70 70
WIND RIVER
BURROUGHS CREEK 8750 11.3 10.4 109 15.0 20.8 72
COLD SPRINGS 9630 4.3 3.3 130 14.5 15.3 95
DEER PARK 9700 27.1 17.2 158 31.5 28.8 109
HOBBS PARK 10100 20.3 16.7 122 20.8 18.8 111
LITTLE WARM 9370 8.4 7.8 108 15.2 18.2 84
SOUTH PASS 9040 19.3 14.1 137 26.5 24.2 110
ST. LAWRENCE ALT 8620 4.8 3.7 130 14.9 13.5 110
TOGWOTEE PASS 9580 19.4 27.4 71 21.7 30.7 71
TOWNSEND CREEK 8700 7.9 5.7 139 19.6 17.0 115
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Basin wide percent of average 116 96
BIGHORN BASIN
BALD MTN. 9380 20.7 23.0 90 22.1 23.1 96
BEAR TRAP MEADOW 8200 1.2 .7 171 12.8 12.4 103
BLACKWATER 9780 18.9 28.8 66 19.4 26.6 73
BONE SPRINGS DIV 9350 18.3 16.2 113 22.2 20.1 110
EVENING STAR 9200 18.6 32.5 57 25.3 31.9 79
GRAVE SPRINGS 8550 6.0 7.9 76 12.8 14.5 88
KIRWIN 9550 10.9 11.0 99 14.4 15.7 92
MARQUETTE 8760 9.3 8.9 104 14.9 15.6 96
MIDDLE POWDER 7760 7.5 11.1 68 11.0 17.3 64
OWL CREEK 8975 3.9 2.3 170 12.0 9.5 126
POWDER RIVER PASS 9480 8.5 8.1 105 17.8 17.5 102
SHELL CREEK 9580 19.6 16.3 120 19.9 18.5 108
SYLVAN LAKE 8420 8.9 20.3 44 20.6 26.6 77
SYLVAN ROAD 7120 .1 2.7 4 13.1 21.8 60
TIMBER CREEK 7950 3.4 2.2 155 12.0 12.3 98
YOUNTS PEAK 8350 9.7 15.4 63 14.8 20.3 73
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Basin wide percent of average 80 87
SHOSHONE RIVER
BLACKWATER 9780 18.9 28.8 66 19.4 26.6 73
EVENING STAR 9200 18.6 32.5 57 25.3 31.9 79
KIRWIN 9550 10.9 11.0 99 14.4 15.7 92
MARQUETTE 8760 9.3 8.9 104 14.9 15.6 96
SYLVAN LAKE 8420 8.9 20.3 44 20.6 26.6 77
SYLVAN ROAD 7120 .1 2.7 4 13.1 21.8 60
YOUNTS PEAK 8350 9.7 15.4 63 14.8 20.3 73
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Basin wide percent of average 64 77
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 .7 171 12.8 12.4 103
BIG GOOSE 7990 10.6 9.1 116 18.4 14.5 127
BONE SPRINGS DIV 9350 18.3 16.2 113 22.2 20.1 110
BURGESS JUNCTION 7880 10.9 10.2 107 17.4 16.8 104
CLOUD PEAK RESERVOIR 9860 20.2 14.8 136 21.7 19.2 113
DOME LAKE 8880 11.5 10.4 111 20.7 18.5 112
GRAVE SPRINGS 8550 6.0 7.9 76 12.8 14.5 88
HANSEN SAWMILL 8360 2.1 2.2 95 15.5 12.4 125
MIDDLE POWDER 7760 7.5 11.1 68 11.0 17.3 64
POWDER RIVER PASS 9480 8.5 8.1 105 17.8 17.5 102
SUCKER CREEK 8880 14.9 10.2 146 22.1 19.3 115
TIE CREEK 6870 1.3 1.3 100 18.9 15.2 124
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Basin wide percent of average 111 107
BELLE FOURCHE
BLIND PARK 6890 .0 .1 0* 12.9 15.9 81
COLE CANYON 5910 .0 3.0 0 12.1 -M *
NORTH RAPID CREEK 6130 .0 .6 0* 11.0 12.6 87
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Basin wide percent of average 0* 84
UPPER N. PLATTE RIVER
COLUMBINE 9160 7.3 13.1 56 -M 30.6 *
DIVIDE PEAK 8860 16.1 12.8 126 28.7 25.7 112
ELK RIVER 8700 10.6 7.6 139 26.0 24.4 107
JOE WRIGHT 10120 23.7 23.8 100 27.6 32.2 86
NORTH FRENCH CREEK 10130 31.0 33.2 93 32.4 31.8 102
OLD BATTLE 9920 41.7 35.5 117 33.4 41.8 80
SAGE CREEK BASIN 7850 .1 7.4 1 19.2 14.9 129
SOUTH BRUSH CREEK 8440 5.0 6.5 77 19.6 21.7 90
TOWER 10500 43.4 51.5 84 46.9 47.3 99
WEBBER SPRINGS 9250 19.6 18.1 108 32.7 32.7 100
WILLOW CREEK PASS 9540 16.2 11.2 145 16.4 17.1 96
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Basin wide percent of average 97 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 20.0 23.1 87 24.2 28.9 84
CASPER MTN. 7850 5.4 11.7 46 17.1 21.5 80
DEADMAN HILL 10220 18.3 18.0 102 19.5 22.7 86
DEER PARK 9700 27.1 17.2 158 31.5 28.8 109
LAPRELE CREEK 8375 .0 3.6 0 14.4 18.1 80
RENO HILL 8500 7.5 9.7 77 17.1 22.2 77
ROACH 9700 15.0 13.4 112 22.9 24.2 95
SAND LAKE 10050 28.9 35.5 81 29.8 31.6 94
SOUTH PASS 9040 19.3 14.1 137 26.5 24.2 110
WINDY PEAK 7900 .8 1.7 47 12.2 15.1 81
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Basin wide percent of average 96 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .6 0* 19.8 19.6 101
DIVIDE PEAK 8860 16.1 12.8 126 28.7 25.7 112
OLD BATTLE 9920 41.7 35.5 117 33.4 41.8 80
SANDSTONE RS 8150 1.4 3.8 37 24.1 23.2 104
WHISKEY PARK 8950 26.3 26.5 99 31.8 35.6 89
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Basin wide percent of average 108 94
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.5 9.0 150 19.0 17.1 111
BLIND BULL SUM 8900 19.0 24.9 76 20.4 26.5 77
EAST RIM DIVIDE 7930 .1 9.2 1 13.8 14.9 93
ELKHART PARK G.S. 9400 13.0 9.4 138 19.4 17.4 111
GROS VENTRE SUMMIT 8750 8.6 9.9 87 14.0 16.4 85
KENDALL R.S. 7740 .1 3.7 3 15.8 17.5 90
LOOMIS PARK 8240 6.5 9.7 67 20.2 21.1 96
NEW FORK LAKE 8340 5.2 3.8 137 15.2 14.5 105
SNIDER BASIN 8060 5.3 7.7 69 16.5 19.4 85
SPRING CREEK DIVIDE 9000 25.3 24.7 102 27.3 31.5 87
TRIPLE PEAK 8500 10.9 17.1 64 25.2 30.1 84
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Basin wide percent of average 83 91
LOWER GREEN RIVER
HAMS FORK 7840 .1 1.1 9* 18.2 15.7 116
HEWINTA 9500 1.5 4.5 33 16.1 18.9 85
HICKERSON PARK 9100 .0 2.1 0 13.7 11.3 121
HOLE-IN-ROCK 9150 .0 1.7 0 13.0 10.8 120
INDIAN CREEK 9425 32.7 23.7 138 30.8 30.9 100
KELLEY R.S. 8180 11.8 9.1 130 24.4 24.8 98
STEEL CREEK PARK 10100 20.0 18.1 110 20.7 21.6 96
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Basin wide percent of average 110 102
UPPER BEAR RIVER
BUG LAKE 7950 17.6 10.9 161 28.5 23.6 121
HAYDEN FORK 9100 7.5 7.3 103 30.2 26.6 114
KELLEY R.S. 8180 11.8 9.1 130 24.4 24.8 98
LILY LAKE 9050 8.7 6.3 138 24.1 22.5 107
MONTE CRISTO 8960 30.9 22.7 136 37.2 32.0 116
SALT RIVER SUMMIT 7600 5.1 4.9 104 21.1 22.7 93
TRIAL LAKE 9960 34.4 23.2 148 37.2 31.2 119
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Basin wide percent of average 137 111
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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.