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 WEDNESDAY: MARCH 26 , 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 18.0 * 26.2 21.1 124
COTTONWOOD CREEK 7670 24.5 23.5 104 25.0 26.8 93
GRAND TARGHEE 9260 47.6 -M * 33.7 -M *
GRANITE CREEK 6770 18.2 18.7 97 23.1 19.7 117
GRASSY LAKE 7265 34.5 35.1 98 -M 35.4 *
GROS VENTRE SUMMIT 8750 12.7 14.0 91 13.7 12.6 109
GUNSIGHT PASS 9820 11.9 -M * 14.0 -M *
LEWIS LAKE DIVIDE 7850 33.5 34.9 96 36.5 36.2 101
PHILLIPS BENCH 8200 32.5 28.4 114 34.2 28.5 120
SALT RIVER SUMMIT 7760 13.5 14.2 95 15.7 18.3 86
SNAKE RIVER STATION 6920 19.5 19.1 102 26.8 21.9 122
SPRING CREEK DIVIDE 9000 22.8 26.1 87 23.7 25.9 92
THUMB DIVIDE 7980 17.2 18.8 91 19.4 18.5 105
TOGWOTEE PASS 9580 26.6 24.3 109 29.0 24.0 121
TWO OCEAN PLATEAU 9240 -M 27.4 * -M 27.2 *
WILLOW CREEK 8380 31.8 29.8 107 36.3 31.5 115
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Basin wide percent of average 100 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 24.8 23.0 108 23.5 19.7 119
BLACK BEAR 8170 43.9 38.4 114 39.0 39.6 98
CANYON 7870 16.5 13.5 122 19.8 15.1 131
FISHER CREEK 9100 40.2 34.2 118 36.4 35.7 102
MADISON PLATEAU 7750 28.4 24.6 115 30.8 26.1 118
NORTHEAST ENTRANCE 7350 -M 11.2 * -M 12.4 *
PARKER PEAK 9400 25.4 21.2 120 23.2 15.9 146
SYLVAN LAKE 8420 20.5 22.1 93 25.2 20.5 123
THUMB DIVIDE 7980 17.2 18.8 91 19.4 18.5 105
TWO OCEAN PLATEAU 9240 -M 27.4 * -M 27.2 *
WHISKEY CREEK 6800 17.8 16.8 106 24.1 20.5 118
WHITE MILL 8700 27.0 23.8 113 26.3 26.5 99
WOLVERINE 7650 10.4 11.5 90 13.4 12.6 106
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Basin wide percent of average 110 112
WIND RIVER
BURROUGHS CREEK 8750 15.7 14.4 109 18.6 15.9 117
COLD SPRINGS 9630 6.6 8.6 77 9.8 10.1 97
DEER PARK 9700 15.3 16.5 93 19.7 21.2 93
HOBBS PARK 10100 13.7 14.2 96 14.1 12.2 116
LITTLE WARM 9370 9.6 11.6 83 13.3 12.9 103
SOUTH PASS 9040 14.2 16.3 87 17.0 17.8 96
ST. LAWRENCE ALT 8620 6.8 7.0 97 8.3 8.4 99
TOGWOTEE PASS 9580 26.6 24.3 109 29.0 24.0 121
TOWNSEND CREEK 8700 8.8 8.3 106 12.0 11.0 109
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Basin wide percent of average 97 106
BIGHORN BASIN
BALD MTN. 9380 16.1 19.0 85 14.9 16.8 89
BEAR TRAP MEADOW 8200 9.0 5.2 173 9.1 7.8 117
BLACKWATER 9780 24.3 23.9 102 22.4 20.0 112
BONE SPRINGS DIV 9350 16.8 15.6 108 16.9 14.0 121
EVENING STAR 9200 29.1 29.1 100 32.4 24.7 131
GRAVE SPRINGS 8550 9.7 8.9 109 10.2 9.3 110
KIRWIN 9550 11.9 10.9 109 14.0 10.8 130
MARQUETTE 8760 6.1 8.4 73 9.4 9.2 102
MIDDLE POWDER 7760 11.3 11.2 101 9.2 11.8 78
OWL CREEK 8975 5.6 5.3 106 6.6 5.5 120
POWDER RIVER PASS 9480 12.2 10.5 116 14.3 11.9 120
SHELL CREEK 9580 15.5 14.2 109 15.0 12.8 117
SYLVAN LAKE 8420 20.5 22.1 93 25.2 20.5 123
SYLVAN ROAD 7120 11.7 12.6 93 20.3 17.4 117
TIMBER CREEK 7950 4.2 5.4 78 7.8 6.9 113
YOUNTS PEAK 8350 16.9 16.8 101 17.8 15.8 113
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Basin wide percent of average 101 114
SHOSHONE RIVER
BLACKWATER 9780 24.3 23.9 102 22.4 20.0 112
EVENING STAR 9200 29.1 29.1 100 32.4 24.7 131
KIRWIN 9550 11.9 10.9 109 14.0 10.8 130
MARQUETTE 8760 6.1 8.4 73 9.4 9.2 102
SYLVAN LAKE 8420 20.5 22.1 93 25.2 20.5 123
SYLVAN ROAD 7120 11.7 12.6 93 20.3 17.4 117
YOUNTS PEAK 8350 16.9 16.8 101 17.8 15.8 113
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Basin wide percent of average 97 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.0 5.2 173 9.1 7.8 117
BIG GOOSE 7990 8.5 9.9 86 11.4 8.1 141
BONE SPRINGS DIV 9350 16.8 15.6 108 16.9 14.0 121
BURGESS JUNCTION 7880 11.7 11.1 105 13.2 11.6 114
CLOUD PEAK RESERVOIR 9860 15.1 12.7 119 14.9 12.2 122
DOME LAKE 8880 11.1 11.8 94 14.5 12.5 116
GRAVE SPRINGS 8550 9.7 8.9 109 10.2 9.3 110
HANSEN SAWMILL 8360 7.0 6.3 111 9.2 7.8 118
MIDDLE POWDER 7760 11.3 11.2 101 9.2 11.8 78
POWDER RIVER PASS 9480 12.2 10.5 116 14.3 11.9 120
SUCKER CREEK 8880 13.8 11.2 123 15.9 12.9 123
TIE CREEK 6870 7.1 5.8 122 11.2 9.4 119
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Basin wide percent of average 111 116
BELLE FOURCHE
BLIND PARK 6890 7.1 8.6 83 9.9 10.7 93
COLE CANYON 5910 5.4 6.7 81 7.0 6.4 109
NORTH RAPID CREEK 6130 8.0 8.0 100 8.1 8.4 96
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Basin wide percent of average 88 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 25.9 24.7 105 26.8 24.5 109
DIVIDE PEAK 8880 21.4 19.3 111 21.8 20.1 108
ELK RIVER 8700 25.6 19.0 135 22.2 19.0 117
JOE WRIGHT 10120 21.7 20.6 105 25.2 23.9 105
NORTH FRENCH CREEK 10130 28.8 28.1 102 27.8 23.9 116
OLD BATTLE 10000 31.0 31.4 99 34.1 33.7 101
SAGE CREEK BASIN 7850 17.0 11.2 152 16.9 11.7 144
SOUTH BRUSH CREEK 8440 13.0 12.7 102 15.9 15.8 101
TOWER 10500 40.7 44.2 92 -M 37.4 *
WEBBER SPRINGS 9250 24.8 25.9 96 28.2 25.9 109
WILLOW CREEK PASS 9540 14.6 11.5 127 14.5 12.4 117
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Basin wide percent of average 106 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.1 22.8 88 20.7 21.2 98
CASPER MTN. 7900 12.7 13.8 92 13.6 13.7 99
DEADMAN HILL 10220 16.0 15.7 102 16.5 16.2 102
DEER PARK 9700 15.3 16.5 93 19.7 21.2 93
LAPRELE CREEK 8375 7.4 10.7 69 10.0 12.1 83
RENO HILL 8400 12.7 13.5 94 14.6 14.2 103
ROACH 9700 18.0 16.5 109 20.6 18.0 114
SAND LAKE 10050 26.2 31.4 83 26.0 23.2 112
SOUTH PASS 9040 14.2 16.3 87 17.0 17.8 96
WINDY PEAK 7900 7.6 7.8 97 9.0 10.1 89
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Basin wide percent of average 91 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.1 11.5 140 15.8 15.3 103
DIVIDE PEAK 8880 21.4 19.3 111 21.8 20.1 108
OLD BATTLE 10000 31.0 31.4 99 34.1 33.7 101
SANDSTONE RS 8150 16.5 15.0 110 20.1 18.3 110
WHISKEY PARK 8950 31.2 29.6 105 32.2 27.9 115
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Basin wide percent of average 109 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.2 14.2 93 13.3 13.1 102
BLIND BULL SUM 8650 25.0 27.6 91 17.9 21.8 82
EAST RIM DIVIDE 7930 9.2 12.9 71 11.3 11.8 96
ELKHART PARK G.S. 9400 10.9 13.2 83 11.5 13.0 88
GROS VENTRE SUMMIT 8750 12.7 14.0 91 13.7 12.6 109
GUNSIGHT PASS 9820 11.9 -M * 14.0 -M *
KENDALL R.S. 7740 12.2 14.6 84 13.8 14.3 97
LOOMIS PARK 8240 16.1 17.2 94 17.6 17.1 103
NEW FORK LAKE 8340 9.5 11.1 86 9.4 11.1 85
SNIDER BASIN 8060 13.4 14.4 93 14.3 15.8 91
SPRING CREEK DIVIDE 9000 22.8 26.1 87 23.7 25.9 92
TRIPLE PEAK 8500 25.0 24.6 102 28.0 24.3 115
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Basin wide percent of average 90 97
LOWER GREEN RIVER
HAMS FORK 7840 11.8 12.4 95 10.0 12.0 83
HEWINTA 9519 15.2 11.5 132 16.5 14.0 118
HICKERSON PARK 9145 7.5 7.2 104 9.9 7.6 130
HOLE-IN-ROCK 9150 6.8 6.9 99 10.2 7.1 144
INDIAN CREEK 9425 24.9 27.2 92 -M 24.8 *
KELLEY R.S. 8180 14.9 16.7 89 17.6 19.9 88
STEEL CREEK PARK 10200 15.3 15.3 100 18.2 15.6 117
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Basin wide percent of average 99 108
UPPER BEAR RIVER
BUG LAKE 7950 17.6 20.5 86 16.8 18.8 89
HAYDEN FORK 9212 19.1 16.1 119 22.5 20.4 110
KELLEY R.S. 8180 14.9 16.7 89 17.6 19.9 88
LILY LAKE 9156 14.7 12.8 115 17.2 16.9 102
MONTE CRISTO 8960 27.9 29.4 95 25.7 24.9 103
SALT RIVER SUMMIT 7760 13.5 14.2 95 15.7 18.3 86
TRIAL LAKE 9992 21.4 24.6 87 23.5 24.3 97
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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.