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 SATURDAY: MARCH 29 , 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 20.4 18.1 113 27.1 21.4 127
COTTONWOOD CREEK 7670 25.2 23.9 105 25.6 27.3 94
GRAND TARGHEE 9260 49.5 -M * 34.4 -M *
GRANITE CREEK 6770 18.8 18.7 101 23.5 19.9 118
GRASSY LAKE 7265 36.8 35.7 103 -M 35.9 *
GROS VENTRE SUMMIT 8750 13.2 14.2 93 14.2 12.8 111
GUNSIGHT PASS 9820 12.6 -M * 14.6 -M *
LEWIS LAKE DIVIDE 7850 35.7 35.4 101 -M 36.7 *
PHILLIPS BENCH 8200 33.7 28.8 117 34.8 29.0 120
SALT RIVER SUMMIT 7760 13.7 14.4 95 15.9 18.7 85
SNAKE RIVER STATION 6920 21.1 19.2 110 28.2 22.2 127
SPRING CREEK DIVIDE 9000 23.0 26.5 87 24.1 26.3 92
THUMB DIVIDE 7980 18.8 19.0 99 20.7 18.8 110
TOGWOTEE PASS 9580 27.4 24.8 110 29.6 24.5 121
TWO OCEAN PLATEAU 9240 -M 27.9 * -M 27.6 *
WILLOW CREEK 8380 32.7 30.2 108 38.0 32.0 119
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Basin wide percent of average 104 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 25.6 23.3 110 24.1 20.0 120
BLACK BEAR 8170 45.5 39.2 116 -M 40.3 *
CANYON 7870 17.7 13.7 129 20.6 15.4 134
FISHER CREEK 9100 41.6 34.9 119 -M 36.2 *
MADISON PLATEAU 7750 29.9 25.1 119 32.0 26.6 120
NORTHEAST ENTRANCE 7350 -M 11.3 * -M 12.6 *
PARKER PEAK 9400 26.7 21.6 124 -M 16.1 *
SYLVAN LAKE 8420 21.7 22.5 96 26.3 20.8 126
THUMB DIVIDE 7980 18.8 19.0 99 20.7 18.8 110
TWO OCEAN PLATEAU 9240 -M 27.9 * -M 27.6 *
WHISKEY CREEK 6800 18.6 17.2 108 24.7 20.9 118
WHITE MILL 8700 28.0 24.2 116 -M 26.9 *
WOLVERINE 7650 11.2 11.5 97 14.0 12.7 110
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Basin wide percent of average 113 120
WIND RIVER
BURROUGHS CREEK 8750 16.3 14.6 112 19.1 16.1 119
COLD SPRINGS 9630 6.9 8.8 78 10.2 10.4 98
DEER PARK 9700 15.6 16.8 93 20.0 21.6 93
HOBBS PARK 10100 14.1 14.7 96 14.1 12.5 113
LITTLE WARM 9370 10.1 11.8 86 13.8 13.2 105
SOUTH PASS 9040 14.5 16.6 87 17.3 18.2 95
ST. LAWRENCE ALT 8620 6.7 7.2 93 8.4 8.7 97
TOGWOTEE PASS 9580 27.4 24.8 110 29.6 24.5 121
TOWNSEND CREEK 8700 8.8 8.6 102 12.0 11.4 105
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Basin wide percent of average 97 106
BIGHORN BASIN
BALD MTN. 9380 17.0 19.5 87 15.5 17.1 91
BEAR TRAP MEADOW 8200 9.2 5.2 177 9.3 8.0 116
BLACKWATER 9780 25.8 24.4 106 23.4 20.4 115
BONE SPRINGS DIV 9350 17.5 16.0 109 17.5 14.4 122
EVENING STAR 9200 30.8 29.7 104 33.7 25.1 134
GRAVE SPRINGS 8550 9.7 9.2 105 10.2 9.5 107
KIRWIN 9550 12.3 11.2 110 14.3 11.1 129
MARQUETTE 8760 6.6 8.8 75 9.8 9.5 103
MIDDLE POWDER 7760 11.5 11.5 100 9.3 12.1 77
OWL CREEK 8975 5.6 5.5 102 6.7 5.7 118
POWDER RIVER PASS 9480 12.6 10.7 118 14.7 12.1 121
SHELL CREEK 9580 15.9 14.5 110 15.3 13.1 117
SYLVAN LAKE 8420 21.7 22.5 96 26.3 20.8 126
SYLVAN ROAD 7120 12.8 12.9 99 21.3 17.6 121
TIMBER CREEK 7950 4.3 5.7 75 7.9 7.2 110
YOUNTS PEAK 8350 17.6 17.1 103 18.2 16.0 114
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Basin wide percent of average 103 115
SHOSHONE RIVER
BLACKWATER 9780 25.8 24.4 106 23.4 20.4 115
EVENING STAR 9200 30.8 29.7 104 33.7 25.1 134
KIRWIN 9550 12.3 11.2 110 14.3 11.1 129
MARQUETTE 8760 6.6 8.8 75 9.8 9.5 103
SYLVAN LAKE 8420 21.7 22.5 96 26.3 20.8 126
SYLVAN ROAD 7120 12.8 12.9 99 21.3 17.6 121
YOUNTS PEAK 8350 17.6 17.1 103 18.2 16.0 114
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Basin wide percent of average 101 122
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.2 5.2 177 9.3 8.0 116
BIG GOOSE 7990 9.1 10.3 88 12.0 8.3 145
BONE SPRINGS DIV 9350 17.5 16.0 109 17.5 14.4 122
BURGESS JUNCTION 7880 12.4 11.5 108 13.8 11.9 116
CLOUD PEAK RESERVOIR 9860 15.5 13.0 119 15.1 12.5 121
DOME LAKE 8880 11.5 12.1 95 14.8 12.8 116
GRAVE SPRINGS 8550 9.7 9.2 105 10.2 9.5 107
HANSEN SAWMILL 8360 7.2 6.3 114 9.5 8.0 119
MIDDLE POWDER 7760 11.5 11.5 100 9.3 12.1 77
POWDER RIVER PASS 9480 12.6 10.7 118 14.7 12.1 121
SUCKER CREEK 8880 14.3 11.6 123 16.2 13.2 123
TIE CREEK 6870 7.7 5.7 135 11.7 9.6 122
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Basin wide percent of average 112 116
BELLE FOURCHE
BLIND PARK 6890 7.7 8.6 90 10.5 10.9 96
COLE CANYON 5910 5.9 6.7 88 7.5 6.6 114
NORTH RAPID CREEK 6130 8.5 8.1 105 8.5 8.5 100
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Basin wide percent of average 94 102
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.0 24.9 104 27.0 24.9 108
DIVIDE PEAK 8880 21.8 19.7 111 22.0 20.5 107
ELK RIVER 8700 26.0 19.3 135 22.4 19.3 116
JOE WRIGHT 10120 22.3 21.0 106 25.9 24.4 106
NORTH FRENCH CREEK 10130 29.7 28.8 103 28.4 24.3 117
OLD BATTLE 10000 31.9 31.9 100 37.7 34.2 110
SAGE CREEK BASIN 7850 17.5 11.4 154 17.1 11.9 144
SOUTH BRUSH CREEK 8440 13.5 13.0 104 16.2 16.1 101
TOWER 10500 41.8 45.0 93 -M 38.0 *
WEBBER SPRINGS 9250 25.2 26.2 96 28.8 26.4 109
WILLOW CREEK PASS 9540 14.7 11.8 125 14.5 12.6 115
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Basin wide percent of average 107 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.7 23.4 88 21.2 21.7 98
CASPER MTN. 7900 12.8 14.2 90 13.6 14.0 97
DEADMAN HILL 10220 16.6 16.1 103 17.1 16.6 103
DEER PARK 9700 15.6 16.8 93 20.0 21.6 93
LAPRELE CREEK 8375 7.6 10.9 70 10.5 12.4 85
RENO HILL 8400 13.2 13.9 95 15.0 14.6 103
ROACH 9700 18.5 16.8 110 21.1 18.3 115
SAND LAKE 10050 27.3 32.1 85 26.9 23.7 114
SOUTH PASS 9040 14.5 16.6 87 17.3 18.2 95
WINDY PEAK 7900 8.0 8.0 100 9.4 10.3 91
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Basin wide percent of average 92 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.8 11.3 140 16.1 15.6 103
DIVIDE PEAK 8880 21.8 19.7 111 22.0 20.5 107
OLD BATTLE 10000 31.9 31.9 100 37.7 34.2 110
SANDSTONE RS 8150 17.2 14.9 115 20.7 18.6 111
WHISKEY PARK 8950 31.6 30.1 105 34.3 28.4 121
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Basin wide percent of average 110 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.5 14.4 94 13.5 13.3 102
BLIND BULL SUM 8650 25.7 28.0 92 18.2 22.2 82
EAST RIM DIVIDE 7930 9.5 13.1 73 11.6 12.0 97
ELKHART PARK G.S. 9400 11.1 13.4 83 11.7 13.2 89
GROS VENTRE SUMMIT 8750 13.2 14.2 93 14.2 12.8 111
GUNSIGHT PASS 9820 12.6 -M * 14.6 -M *
KENDALL R.S. 7740 12.7 14.6 87 14.2 14.5 98
LOOMIS PARK 8240 16.7 17.4 96 18.1 17.3 105
NEW FORK LAKE 8340 9.7 11.2 87 9.6 11.3 85
SNIDER BASIN 8060 13.7 14.6 94 14.6 16.1 91
SPRING CREEK DIVIDE 9000 23.0 26.5 87 24.1 26.3 92
TRIPLE PEAK 8500 25.8 24.9 104 28.8 24.7 117
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Basin wide percent of average 91 97
LOWER GREEN RIVER
HAMS FORK 7840 12.4 12.2 102 10.5 12.2 86
HEWINTA 9519 15.7 11.8 133 16.8 14.4 117
HICKERSON PARK 9145 7.5 7.4 101 10.0 7.8 128
HOLE-IN-ROCK 9150 6.7 7.0 96 10.2 7.3 140
INDIAN CREEK 9425 25.8 27.8 93 -M 25.3 *
KELLEY R.S. 8180 15.4 16.9 91 18.2 20.2 90
STEEL CREEK PARK 10200 15.5 15.6 99 18.3 15.9 115
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Basin wide percent of average 100 108
UPPER BEAR RIVER
BUG LAKE 7950 17.9 20.9 86 17.0 19.1 89
HAYDEN FORK 9212 19.8 16.3 121 22.7 20.8 109
KELLEY R.S. 8180 15.4 16.9 91 18.2 20.2 90
LILY LAKE 9156 14.7 13.0 113 17.4 17.3 101
MONTE CRISTO 8960 28.3 29.8 95 26.0 25.3 103
SALT RIVER SUMMIT 7760 13.7 14.4 95 15.9 18.7 85
TRIAL LAKE 9992 21.6 25.0 86 23.5 24.8 95
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Basin wide percent of average 96 96
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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.