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 1 , 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 15.1 16.0 94 21.6 18.6 116
COTTONWOOD CREEK 7670 19.7 18.5 106 21.1 23.0 92
GRAND TARGHEE 9260 39.7 -M * 27.0 -M *
GRANITE CREEK 6770 14.5 16.1 90 19.8 17.4 114
GRASSY LAKE 7265 26.4 29.5 89 34.0 31.0 110
GROS VENTRE SUMMIT 8750 11.2 11.5 97 12.2 10.8 113
GUNSIGHT PASS 9820 10.4 -M * 12.1 -M *
LEWIS LAKE DIVIDE 7850 26.2 29.7 88 30.9 31.5 98
PHILLIPS BENCH 8200 25.7 23.9 108 28.7 24.6 117
SALT RIVER SUMMIT 7760 11.4 12.2 93 13.4 15.8 85
SNAKE RIVER STATION 6920 14.5 16.6 87 22.4 19.5 115
SPRING CREEK DIVIDE 9000 18.9 22.2 85 19.3 22.5 86
THUMB DIVIDE 7980 13.7 15.4 89 16.3 16.0 102
TOGWOTEE PASS 9580 22.2 20.7 107 24.3 20.7 117
TWO OCEAN PLATEAU 9240 29.2 23.3 125 23.4 23.4 100
WILLOW CREEK 8380 25.9 25.4 102 31.5 27.0 117
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Basin wide percent of average 98 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.8 19.7 111 20.2 17.1 118
BLACK BEAR 8170 38.5 32.9 117 -M 33.3 *
CANYON 7870 14.2 11.3 126 17.7 13.0 136
FISHER CREEK 9100 35.6 29.6 120 -M 30.6 *
MADISON PLATEAU 7750 24.7 20.9 118 27.6 22.1 125
NORTHEAST ENTRANCE 7350 8.0 9.7 82 11.4 10.8 106
PARKER PEAK 9400 21.5 18.2 118 -M 13.7 *
SYLVAN LAKE 8420 17.5 18.8 93 22.0 17.9 123
THUMB DIVIDE 7980 13.7 15.4 89 16.3 16.0 102
TWO OCEAN PLATEAU 9240 29.2 23.3 125 23.4 23.4 100
WHISKEY CREEK 6800 15.7 14.4 109 22.0 17.4 126
WHITE MILL 8700 22.9 20.3 113 -M 22.7 *
WOLVERINE 7650 8.8 10.6 83 11.2 11.2 100
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Basin wide percent of average 111 115
WIND RIVER
BURROUGHS CREEK 8750 13.1 12.6 104 15.9 13.7 116
COLD SPRINGS 9630 5.4 7.2 75 8.4 8.4 100
DEER PARK 9700 11.7 14.4 81 16.0 17.8 90
HOBBS PARK 10100 10.4 11.9 87 11.1 9.9 112
LITTLE WARM 9370 7.9 9.5 83 11.3 10.9 104
SOUTH PASS 9040 10.8 14.0 77 13.5 15.0 90
ST. LAWRENCE ALT 8620 5.4 5.9 92 6.9 7.0 99
TOGWOTEE PASS 9580 22.2 20.7 107 24.3 20.7 117
TOWNSEND CREEK 8700 6.4 6.9 93 9.4 8.9 106
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Basin wide percent of average 90 104
BIGHORN BASIN
BALD MTN. 9380 13.4 16.0 84 12.9 14.1 91
BEAR TRAP MEADOW 8200 6.6 4.3 153 6.9 6.4 108
BLACKWATER 9780 20.3 20.4 100 19.0 17.2 110
BONE SPRINGS DIV 9350 13.2 13.2 100 14.4 11.6 124
EVENING STAR 9200 24.9 25.0 100 -M 21.8 *
GRAVE SPRINGS 8550 7.2 7.3 99 8.0 7.8 103
KIRWIN 9550 10.1 9.1 111 12.2 9.2 133
MARQUETTE 8760 3.7 6.9 54 7.3 7.5 97
MIDDLE POWDER 7760 8.1 9.0 90 6.8 9.6 71
OWL CREEK 8975 4.3 4.1 105 5.4 4.4 123
POWDER RIVER PASS 9480 9.7 8.7 111 11.7 10.0 117
SHELL CREEK 9580 13.0 11.8 110 12.7 10.8 118
SYLVAN LAKE 8420 17.5 18.8 93 22.0 17.9 123
SYLVAN ROAD 7120 9.4 11.4 82 18.1 15.6 116
TIMBER CREEK 7950 2.8 4.2 67 6.2 5.4 115
YOUNTS PEAK 8350 14.2 14.6 97 15.4 13.6 113
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Basin wide percent of average 97 111
SHOSHONE RIVER
BLACKWATER 9780 20.3 20.4 100 19.0 17.2 110
EVENING STAR 9200 24.9 25.0 100 -M 21.8 *
KIRWIN 9550 10.1 9.1 111 12.2 9.2 133
MARQUETTE 8760 3.7 6.9 54 7.3 7.5 97
SYLVAN LAKE 8420 17.5 18.8 93 22.0 17.9 123
SYLVAN ROAD 7120 9.4 11.4 82 18.1 15.6 116
YOUNTS PEAK 8350 14.2 14.6 97 15.4 13.6 113
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Basin wide percent of average 94 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.6 4.3 153 6.9 6.4 108
BIG GOOSE 7990 6.4 7.7 83 9.2 6.8 135
BONE SPRINGS DIV 9350 13.2 13.2 100 14.4 11.6 124
BURGESS JUNCTION 7880 8.9 9.0 99 10.5 9.5 111
CLOUD PEAK RESERVOIR 9860 12.0 10.0 120 12.2 9.8 124
DOME LAKE 8880 8.2 9.5 86 11.5 10.2 113
GRAVE SPRINGS 8550 7.2 7.3 99 8.0 7.8 103
HANSEN SAWMILL 8360 5.2 5.2 100 7.5 6.3 119
MIDDLE POWDER 7760 8.1 9.0 90 6.8 9.6 71
POWDER RIVER PASS 9480 9.7 8.7 111 11.7 10.0 117
SUCKER CREEK 8880 10.3 9.1 113 12.4 10.5 118
TIE CREEK 6870 5.0 4.9 102 -M 7.9 *
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Basin wide percent of average 103 113
BELLE FOURCHE
BLIND PARK 6890 6.1 7.1 86 8.9 9.3 96
COLE CANYON 5910 5.1 5.7 89 6.1 5.5 111
NORTH RAPID CREEK 6130 7.0 6.8 103 7.0 7.5 93
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Basin wide percent of average 93 99
UPPER N. PLATTE RIVER
COLUMBINE 9160 22.3 21.9 102 24.5 20.9 117
DIVIDE PEAK 8880 19.8 15.6 127 20.1 17.0 118
ELK RIVER 8700 21.6 16.1 134 20.7 16.1 129
JOE WRIGHT 10120 19.9 17.3 115 23.2 20.2 115
NORTH FRENCH CREEK 10130 25.4 22.7 112 25.2 20.2 125
OLD BATTLE 10000 28.0 26.3 106 33.0 28.5 116
SAGE CREEK BASIN 7850 14.9 9.0 166 15.9 9.9 161
SOUTH BRUSH CREEK 8440 11.0 10.0 110 14.6 13.3 110
TOWER 10500 -M 37.6 * -M 31.9 *
WEBBER SPRINGS 9250 21.8 21.3 102 25.5 22.1 115
WILLOW CREEK PASS 9540 13.2 9.6 138 13.6 10.4 131
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Basin wide percent of average 117 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 17.5 19.0 92 18.2 17.5 104
CASPER MTN. 7900 9.5 11.3 84 11.1 11.1 100
DEADMAN HILL 10220 14.4 13.0 111 14.8 13.3 111
DEER PARK 9700 11.7 14.4 81 16.0 17.8 90
LAPRELE CREEK 8375 5.8 8.9 65 8.3 10.0 83
RENO HILL 8400 9.7 10.4 93 11.4 11.5 99
ROACH 9700 16.4 13.9 118 19.1 14.9 128
SAND LAKE 10050 22.6 25.2 90 22.7 19.3 118
SOUTH PASS 9040 10.8 14.0 77 13.5 15.0 90
WINDY PEAK 7900 6.5 6.0 108 7.9 8.5 93
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Basin wide percent of average 92 103
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 14.1 9.7 145 14.5 12.3 118
DIVIDE PEAK 8880 19.8 15.6 127 20.1 17.0 118
OLD BATTLE 10000 28.0 26.3 106 33.0 28.5 116
SANDSTONE RS 8150 14.9 12.5 119 18.7 15.7 119
WHISKEY PARK 8950 27.1 23.8 114 30.0 23.4 128
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Basin wide percent of average 118 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.8 12.1 89 10.9 11.3 96
BLIND BULL SUM 8650 20.4 23.1 88 15.4 19.1 81
EAST RIM DIVIDE 7930 7.3 11.0 66 9.5 10.2 93
ELKHART PARK G.S. 9400 9.5 11.1 86 10.2 10.9 94
GROS VENTRE SUMMIT 8750 11.2 11.5 97 12.2 10.8 113
GUNSIGHT PASS 9820 10.4 -M * 12.1 -M *
KENDALL R.S. 7740 9.7 12.4 78 11.6 12.5 93
LOOMIS PARK 8240 13.1 14.5 90 14.8 14.8 100
NEW FORK LAKE 8340 8.0 9.6 83 8.2 9.6 85
SNIDER BASIN 8060 11.0 12.4 89 12.1 13.7 88
SPRING CREEK DIVIDE 9000 18.9 22.2 85 19.3 22.5 86
TRIPLE PEAK 8500 19.8 20.9 95 22.9 20.7 111
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Basin wide percent of average 87 94
LOWER GREEN RIVER
HAMS FORK 7840 9.9 11.0 90 8.5 10.4 82
HEWINTA 9519 10.9 9.1 120 14.2 11.6 122
HICKERSON PARK 9145 6.1 5.8 105 8.3 6.2 134
HOLE-IN-ROCK 9150 5.1 5.7 89 8.4 5.8 145
INDIAN CREEK 9425 19.4 22.3 87 -M 21.1 *
KELLEY R.S. 8180 12.0 14.0 86 14.5 17.2 84
STEEL CREEK PARK 10200 12.3 12.7 97 15.7 12.9 122
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Basin wide percent of average 94 109
UPPER BEAR RIVER
BUG LAKE 7950 15.4 17.1 90 14.9 16.2 92
HAYDEN FORK 9212 16.3 13.2 123 20.1 17.1 118
KELLEY R.S. 8180 12.0 14.0 86 14.5 17.2 84
LILY LAKE 9156 12.4 10.8 115 15.1 14.3 106
MONTE CRISTO 8960 24.3 24.7 98 23.2 21.1 110
SALT RIVER SUMMIT 7760 11.4 12.2 93 13.4 15.8 85
TRIAL LAKE 9992 18.0 20.6 87 21.2 20.5 103
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Basin wide percent of average 98 100
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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.