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: MARCH 30 , 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 18.1 * 27.5 21.5 128
COTTONWOOD CREEK 7670 25.2 24.0 105 25.6 27.5 93
GRAND TARGHEE 9260 49.3 -M * 34.4 -M *
GRANITE CREEK 6770 18.9 18.7 101 23.8 20.0 119
GRASSY LAKE 7265 36.9 35.8 103 -M 36.1 *
GROS VENTRE SUMMIT 8750 13.1 14.2 92 14.4 12.9 112
GUNSIGHT PASS 9820 12.5 -M * 14.5 -M *
LEWIS LAKE DIVIDE 7850 -M 35.6 * -M 36.9 *
PHILLIPS BENCH 8200 34.1 29.0 118 35.0 29.1 120
SALT RIVER SUMMIT 7760 -M 14.5 * -M 18.8 *
SNAKE RIVER STATION 6920 20.8 19.2 108 28.2 22.3 126
SPRING CREEK DIVIDE 9000 23.1 26.7 87 24.2 26.5 91
THUMB DIVIDE 7980 19.2 19.1 101 21.1 18.9 112
TOGWOTEE PASS 9580 27.6 24.9 111 29.8 24.6 121
TWO OCEAN PLATEAU 9240 37.5 28.1 133 -M 27.7 *
WILLOW CREEK 8380 33.1 30.4 109 38.1 32.2 118
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Basin wide percent of average 107 114
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 25.8 23.4 110 24.5 20.1 122
BLACK BEAR 8170 46.4 39.5 117 -M 40.5 *
CANYON 7870 18.2 13.8 132 21.3 15.4 138
FISHER CREEK 9100 42.3 35.1 121 -M 36.4 *
MADISON PLATEAU 7750 30.4 25.3 120 32.5 26.8 121
NORTHEAST ENTRANCE 7350 -M 11.3 * -M 12.7 *
PARKER PEAK 9400 27.0 21.7 124 -M 16.2 *
SYLVAN LAKE 8420 21.9 22.6 97 26.4 20.9 126
THUMB DIVIDE 7980 19.2 19.1 101 21.1 18.9 112
TWO OCEAN PLATEAU 9240 37.5 28.1 133 -M 27.7 *
WHISKEY CREEK 6800 19.1 17.3 110 25.1 21.0 120
WHITE MILL 8700 28.6 24.4 117 -M 27.0 *
WOLVERINE 7650 11.4 11.5 99 13.9 12.8 109
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Basin wide percent of average 116 121
WIND RIVER
BURROUGHS CREEK 8750 16.3 14.7 111 19.2 16.2 119
COLD SPRINGS 9630 6.9 8.9 78 10.1 10.5 96
DEER PARK 9700 15.5 16.9 92 20.1 21.8 92
HOBBS PARK 10100 14.3 14.8 97 14.2 12.7 112
LITTLE WARM 9370 10.1 11.9 85 13.8 13.3 104
SOUTH PASS 9040 14.5 16.7 87 17.4 18.3 95
ST. LAWRENCE ALT 8620 6.8 7.3 93 8.4 8.7 97
TOGWOTEE PASS 9580 27.6 24.9 111 29.8 24.6 121
TOWNSEND CREEK 8700 8.8 8.7 101 12.3 11.5 107
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Basin wide percent of average 97 106
BIGHORN BASIN
BALD MTN. 9380 17.0 19.6 87 15.3 17.2 89
BEAR TRAP MEADOW 8200 9.2 5.2 177 9.2 8.1 114
BLACKWATER 9780 26.0 24.6 106 23.3 20.5 114
BONE SPRINGS DIV 9350 17.6 16.2 109 17.4 14.5 120
EVENING STAR 9200 30.8 29.8 103 34.1 25.2 135
GRAVE SPRINGS 8550 9.7 9.4 103 10.3 9.6 107
KIRWIN 9550 12.4 11.3 110 14.5 11.1 131
MARQUETTE 8760 6.5 8.9 73 9.6 9.6 100
MIDDLE POWDER 7760 11.5 11.7 98 9.4 12.2 77
OWL CREEK 8975 5.5 5.5 100 6.6 5.8 114
POWDER RIVER PASS 9480 12.6 10.8 117 14.6 12.2 120
SHELL CREEK 9580 15.9 14.7 108 15.3 13.2 116
SYLVAN LAKE 8420 21.9 22.6 97 26.4 20.9 126
SYLVAN ROAD 7120 13.1 13.0 101 21.7 17.7 123
TIMBER CREEK 7950 4.2 5.8 72 8.0 7.2 111
YOUNTS PEAK 8350 17.6 17.2 102 18.1 16.1 112
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Basin wide percent of average 102 115
SHOSHONE RIVER
BLACKWATER 9780 26.0 24.6 106 23.3 20.5 114
EVENING STAR 9200 30.8 29.8 103 34.1 25.2 135
KIRWIN 9550 12.4 11.3 110 14.5 11.1 131
MARQUETTE 8760 6.5 8.9 73 9.6 9.6 100
SYLVAN LAKE 8420 21.9 22.6 97 26.4 20.9 126
SYLVAN ROAD 7120 13.1 13.0 101 21.7 17.7 123
YOUNTS PEAK 8350 17.6 17.2 102 18.1 16.1 112
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Basin wide percent of average 101 122
POWDER-TONGUE
BEAR TRAP MEADOW 8200 9.2 5.2 177 9.2 8.1 114
BIG GOOSE 7990 9.0 10.4 87 11.9 8.4 142
BONE SPRINGS DIV 9350 17.6 16.2 109 17.4 14.5 120
BURGESS JUNCTION 7880 12.2 11.6 105 13.6 12.0 113
CLOUD PEAK RESERVOIR 9860 15.6 13.1 119 15.0 12.6 119
DOME LAKE 8880 11.6 12.2 95 14.9 13.0 115
GRAVE SPRINGS 8550 9.7 9.4 103 10.3 9.6 107
HANSEN SAWMILL 8360 7.1 6.3 113 9.3 8.1 115
MIDDLE POWDER 7760 11.5 11.7 98 9.4 12.2 77
POWDER RIVER PASS 9480 12.6 10.8 117 14.6 12.2 120
SUCKER CREEK 8880 14.3 11.6 123 16.2 13.4 121
TIE CREEK 6870 7.6 5.7 133 11.7 9.7 121
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Basin wide percent of average 111 115
BELLE FOURCHE
BLIND PARK 6890 7.6 8.7 87 10.5 11.0 95
COLE CANYON 5910 5.8 6.8 85 7.5 6.6 114
NORTH RAPID CREEK 6130 8.2 8.2 100 8.5 8.5 100
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Basin wide percent of average 91 102
UPPER N. PLATTE RIVER
COLUMBINE 9160 26.5 25.0 106 27.5 25.1 110
DIVIDE PEAK 8880 21.9 19.8 111 22.3 20.6 108
ELK RIVER 8700 26.2 19.4 135 22.7 19.5 116
JOE WRIGHT 10120 22.7 21.2 107 26.0 24.6 106
NORTH FRENCH CREEK 10130 29.7 29.0 102 28.5 24.5 116
OLD BATTLE 10000 32.1 32.1 100 38.0 34.4 110
SAGE CREEK BASIN 7850 17.5 11.5 152 17.1 12.0 142
SOUTH BRUSH CREEK 8440 13.5 13.0 104 16.2 16.2 100
TOWER 10500 42.2 45.3 93 33.4 38.2 87
WEBBER SPRINGS 9250 25.3 26.3 96 29.0 26.5 109
WILLOW CREEK PASS 9540 15.2 11.9 128 14.9 12.7 117
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Basin wide percent of average 107 108
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.6 23.5 88 21.2 21.8 97
CASPER MTN. 7900 12.7 14.3 89 13.6 14.2 96
DEADMAN HILL 10220 16.9 16.2 104 17.3 16.7 104
DEER PARK 9700 15.5 16.9 92 20.1 21.8 92
LAPRELE CREEK 8375 7.6 10.9 70 10.4 12.5 83
RENO HILL 8400 12.9 14.0 92 14.9 14.7 101
ROACH 9700 18.6 16.9 110 21.3 18.5 115
SAND LAKE 10050 27.3 32.3 85 26.9 23.9 113
SOUTH PASS 9040 14.5 16.7 87 17.4 18.3 95
WINDY PEAK 7900 7.9 8.0 99 9.4 10.4 90
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Basin wide percent of average 91 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.8 11.2 141 16.1 15.7 103
DIVIDE PEAK 8880 21.9 19.8 111 22.3 20.6 108
OLD BATTLE 10000 32.1 32.1 100 38.0 34.4 110
SANDSTONE RS 8150 17.2 14.9 115 20.8 18.6 112
WHISKEY PARK 8950 31.8 30.2 105 34.3 28.5 120
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Basin wide percent of average 110 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.4 14.5 92 13.3 13.3 100
BLIND BULL SUM 8650 25.8 28.1 92 18.3 22.3 82
EAST RIM DIVIDE 7930 9.5 13.2 72 11.6 12.1 96
ELKHART PARK G.S. 9400 11.0 13.4 82 11.7 13.3 88
GROS VENTRE SUMMIT 8750 13.1 14.2 92 14.4 12.9 112
GUNSIGHT PASS 9820 12.5 -M * 14.5 -M *
KENDALL R.S. 7740 12.7 14.6 87 14.2 14.6 97
LOOMIS PARK 8240 16.7 17.4 96 18.1 17.4 104
NEW FORK LAKE 8340 9.8 11.2 88 9.4 11.3 83
SNIDER BASIN 8060 13.8 14.6 95 14.7 16.1 91
SPRING CREEK DIVIDE 9000 23.1 26.7 87 24.2 26.5 91
TRIPLE PEAK 8500 26.0 25.0 104 29.0 24.8 117
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Basin wide percent of average 91 97
LOWER GREEN RIVER
HAMS FORK 7840 12.5 12.1 103 10.4 12.2 85
HEWINTA 9519 15.9 11.9 134 16.7 14.5 115
HICKERSON PARK 9145 7.6 7.5 101 10.0 7.8 128
HOLE-IN-ROCK 9150 6.7 7.1 94 10.3 7.4 139
INDIAN CREEK 9425 26.0 27.9 93 -M 25.4 *
KELLEY R.S. 8180 15.4 17.0 91 18.2 20.3 90
STEEL CREEK PARK 10200 15.5 15.7 99 18.3 16.1 114
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Basin wide percent of average 100 107
UPPER BEAR RIVER
BUG LAKE 7950 18.0 21.0 86 17.0 19.2 89
HAYDEN FORK 9212 19.9 16.4 121 22.8 20.9 109
KELLEY R.S. 8180 15.4 17.0 91 18.2 20.3 90
LILY LAKE 9156 14.8 13.1 113 17.4 17.4 100
MONTE CRISTO 8960 28.6 29.9 96 26.0 25.5 102
SALT RIVER SUMMIT 7760 -M 14.5 * -M 18.8 *
TRIAL LAKE 9992 21.8 25.1 87 23.8 24.9 96
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Basin wide percent of average 97 98
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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.