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 THURSDAY: MARCH 20 , 2008
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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 -M 17.7 * 24.0 20.6 117
COTTONWOOD CREEK 7670 22.4 22.5 100 23.0 25.9 89
GRAND TARGHEE 9260 46.5 -M * 32.5 -M *
GRANITE CREEK 6770 16.6 18.3 91 21.5 19.3 111
GRASSY LAKE 7265 32.3 33.9 95 -M 34.5 *
GROS VENTRE SUMMIT 8750 12.0 13.4 90 12.9 12.2 106
GUNSIGHT PASS 9820 11.0 -M * 13.0 -M *
LEWIS LAKE DIVIDE 7850 31.3 33.8 93 35.2 35.2 100
PHILLIPS BENCH 8200 30.6 27.4 112 32.5 27.7 117
SALT RIVER SUMMIT 7760 12.7 13.8 92 14.7 17.7 83
SNAKE RIVER STATION 6920 18.1 18.7 97 25.6 21.4 120
SPRING CREEK DIVIDE 9000 21.1 25.2 84 21.9 25.1 87
THUMB DIVIDE 7980 16.2 18.1 90 18.5 18.0 103
TOGWOTEE PASS 9580 25.2 23.5 107 27.4 23.2 118
TWO OCEAN PLATEAU 9240 -M 26.4 * -M 26.4 *
WILLOW CREEK 8380 29.4 28.8 102 34.7 30.5 114
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Basin wide percent of average 97 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 24.0 22.4 107 22.9 19.1 120
BLACK BEAR 8170 43.0 37.5 115 -M 38.2 *
CANYON 7870 16.0 13.1 122 19.4 14.6 133
FISHER CREEK 9100 38.4 33.2 116 -M 34.5 *
MADISON PLATEAU 7750 27.8 23.8 117 30.3 25.1 121
NORTHEAST ENTRANCE 7350 -M 10.8 * -M 12.0 *
PARKER PEAK 9400 24.4 20.4 120 -M 15.4 *
SYLVAN LAKE 8420 19.9 21.3 93 24.4 19.9 123
THUMB DIVIDE 7980 16.2 18.1 90 18.5 18.0 103
TWO OCEAN PLATEAU 9240 -M 26.4 * -M 26.4 *
WHISKEY CREEK 6800 17.5 16.3 107 23.2 19.9 117
WHITE MILL 8700 25.5 23.0 111 24.5 25.6 96
WOLVERINE 7650 10.3 11.4 90 12.6 12.2 103
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Basin wide percent of average 109 114
WIND RIVER
BURROUGHS CREEK 8750 14.6 14.0 104 17.4 15.4 113
COLD SPRINGS 9630 6.0 8.3 72 9.1 9.6 95
DEER PARK 9700 14.4 16.0 90 18.4 20.5 90
HOBBS PARK 10100 12.9 13.6 95 12.8 11.5 111
LITTLE WARM 9370 8.9 11.0 81 12.4 12.4 100
SOUTH PASS 9040 13.4 16.0 84 16.2 17.1 95
ST. LAWRENCE ALT 8620 6.7 6.8 99 8.1 8.0 101
TOGWOTEE PASS 9580 25.2 23.5 107 27.4 23.2 118
TOWNSEND CREEK 8700 8.6 8.0 108 11.7 10.4 112
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Basin wide percent of average 94 104
BIGHORN BASIN
BALD MTN. 9380 15.4 18.3 84 14.3 16.1 89
BEAR TRAP MEADOW 8200 8.2 5.1 161 8.4 7.4 114
BLACKWATER 9780 22.8 23.1 99 21.1 19.3 109
BONE SPRINGS DIV 9350 15.5 15.0 103 16.1 13.4 120
EVENING STAR 9200 27.8 28.1 99 29.9 24.0 125
GRAVE SPRINGS 8550 9.3 8.6 108 9.9 9.0 110
KIRWIN 9550 11.1 10.5 106 13.1 10.4 126
MARQUETTE 8760 5.4 8.0 68 8.8 8.7 101
MIDDLE POWDER 7760 10.6 10.7 99 8.8 11.2 79
OWL CREEK 8975 5.2 5.0 104 6.2 5.2 119
POWDER RIVER PASS 9480 11.0 10.1 109 13.2 11.4 116
SHELL CREEK 9580 14.4 13.6 106 13.9 12.2 114
SYLVAN LAKE 8420 19.9 21.3 93 24.4 19.9 123
SYLVAN ROAD 7120 11.1 12.3 90 19.7 16.9 117
TIMBER CREEK 7950 3.9 5.2 75 7.3 6.5 112
YOUNTS PEAK 8350 15.5 16.3 95 16.1 15.3 105
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Basin wide percent of average 98 112
SHOSHONE RIVER
BLACKWATER 9780 22.8 23.1 99 21.1 19.3 109
EVENING STAR 9200 27.8 28.1 99 29.9 24.0 125
KIRWIN 9550 11.1 10.5 106 13.1 10.4 126
MARQUETTE 8760 5.4 8.0 68 8.8 8.7 101
SYLVAN LAKE 8420 19.9 21.3 93 24.4 19.9 123
SYLVAN ROAD 7120 11.1 12.3 90 19.7 16.9 117
YOUNTS PEAK 8350 15.5 16.3 95 16.1 15.3 105
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Basin wide percent of average 95 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.2 5.1 161 8.4 7.4 114
BIG GOOSE 7990 7.7 9.2 84 10.6 7.7 138
BONE SPRINGS DIV 9350 15.5 15.0 103 16.1 13.4 120
BURGESS JUNCTION 7880 11.2 10.6 106 12.7 11.0 115
CLOUD PEAK RESERVOIR 9860 14.2 12.1 117 14.1 11.5 123
DOME LAKE 8880 10.0 11.2 89 13.3 11.8 113
GRAVE SPRINGS 8550 9.3 8.6 108 9.9 9.0 110
HANSEN SAWMILL 8360 5.9 6.1 97 8.2 7.4 111
MIDDLE POWDER 7760 10.6 10.7 99 8.8 11.2 79
POWDER RIVER PASS 9480 11.0 10.1 109 13.2 11.4 116
SUCKER CREEK 8880 12.9 10.7 121 14.9 12.2 122
TIE CREEK 6870 6.9 6.2 111 10.9 9.0 121
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Basin wide percent of average 107 115
BELLE FOURCHE
BLIND PARK 6890 7.1 8.6 83 9.8 10.4 94
COLE CANYON 5910 5.5 6.4 86 6.9 6.2 111
NORTH RAPID CREEK 6130 7.9 7.7 103 8.0 8.1 99
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Basin wide percent of average 90 100
UPPER N. PLATTE RIVER
COLUMBINE 9160 25.5 24.3 105 26.5 23.7 112
DIVIDE PEAK 8880 21.2 18.4 115 21.6 19.4 111
ELK RIVER 8700 24.2 18.3 132 22.0 18.3 120
JOE WRIGHT 10120 21.3 19.7 108 24.8 23.0 108
NORTH FRENCH CREEK 10130 28.5 26.7 107 27.5 23.0 120
OLD BATTLE 10000 30.8 30.2 102 33.7 32.5 104
SAGE CREEK BASIN 7850 16.6 10.7 155 16.8 11.3 149
SOUTH BRUSH CREEK 8440 12.7 12.2 104 15.9 15.1 105
TOWER 10500 40.0 42.6 94 -M 36.1 *
WEBBER SPRINGS 9250 24.2 25.1 96 27.8 25.0 111
WILLOW CREEK PASS 9540 14.4 11.0 131 14.4 11.9 121
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Basin wide percent of average 108 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.6 21.8 90 20.2 20.3 100
CASPER MTN. 7900 12.3 13.0 95 13.2 12.9 102
DEADMAN HILL 10220 15.8 14.9 106 16.2 15.5 105
DEER PARK 9700 14.4 16.0 90 18.4 20.5 90
LAPRELE CREEK 8375 7.2 10.4 69 9.9 11.6 85
RENO HILL 8400 12.3 12.6 98 14.1 13.4 105
ROACH 9700 17.9 15.8 113 20.4 17.3 118
SAND LAKE 10050 25.6 30.0 85 25.4 22.2 114
SOUTH PASS 9040 13.4 16.0 84 16.2 17.1 95
WINDY PEAK 7900 7.5 7.5 100 8.9 9.7 92
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Basin wide percent of average 92 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.0 11.5 139 15.7 14.6 108
DIVIDE PEAK 8880 21.2 18.4 115 21.6 19.4 111
OLD BATTLE 10000 30.8 30.2 102 33.7 32.5 104
SANDSTONE RS 8150 16.5 14.7 112 20.0 17.7 113
WHISKEY PARK 8950 29.2 28.4 103 31.0 26.8 116
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Basin wide percent of average 110 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.0 13.7 88 12.1 12.7 95
BLIND BULL SUM 8650 23.0 26.6 86 16.9 21.2 80
EAST RIM DIVIDE 7930 8.2 12.5 66 10.3 11.5 90
ELKHART PARK G.S. 9400 10.5 12.7 83 11.2 12.5 90
GROS VENTRE SUMMIT 8750 12.0 13.4 90 12.9 12.2 106
GUNSIGHT PASS 9820 11.0 -M * 13.0 -M *
KENDALL R.S. 7740 11.2 14.3 78 12.8 14.0 91
LOOMIS PARK 8240 14.7 16.7 88 16.2 16.6 98
NEW FORK LAKE 8340 8.9 10.8 82 8.9 10.7 83
SNIDER BASIN 8060 12.3 14.0 88 13.4 15.3 88
SPRING CREEK DIVIDE 9000 21.1 25.2 84 21.9 25.1 87
TRIPLE PEAK 8500 22.7 23.8 95 25.7 23.5 109
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Basin wide percent of average 85 93
LOWER GREEN RIVER
HAMS FORK 7840 11.1 12.4 90 9.3 11.6 80
HEWINTA 9519 14.2 10.9 130 16.2 13.4 121
HICKERSON PARK 9145 7.7 6.8 113 10.0 7.2 139
HOLE-IN-ROCK 9150 6.9 6.6 105 10.1 6.8 149
INDIAN CREEK 9425 22.6 26.1 87 -M 23.9 *
KELLEY R.S. 8180 13.8 16.1 86 16.4 19.2 85
STEEL CREEK PARK 10200 14.9 14.7 101 17.9 14.8 121
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Basin wide percent of average 97 109
UPPER BEAR RIVER
BUG LAKE 7950 16.9 19.8 85 16.1 18.2 88
HAYDEN FORK 9212 19.0 15.4 123 22.1 19.6 113
KELLEY R.S. 8180 13.8 16.1 86 16.4 19.2 85
LILY LAKE 9156 14.4 12.3 117 17.0 16.2 105
MONTE CRISTO 8960 26.8 28.5 94 25.0 24.0 104
SALT RIVER SUMMIT 7760 12.7 13.8 92 14.7 17.7 83
TRIAL LAKE 9992 20.7 23.8 87 23.0 23.5 98
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Basin wide percent of average 96 97
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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 1961-90.
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.