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 13 , 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 15.2 17.2 88 22.6 19.9 114
COTTONWOOD CREEK 7670 20.9 21.0 100 21.9 24.8 88
GRAND TARGHEE 9260 41.8 -M * 29.2 -M *
GRANITE CREEK 6770 15.2 17.7 86 20.4 18.6 110
GRASSY LAKE 7265 27.9 32.3 86 35.3 33.2 106
GROS VENTRE SUMMIT 8750 11.5 12.7 91 12.6 11.7 108
GUNSIGHT PASS 9820 10.7 -M * 12.4 -M *
LEWIS LAKE DIVIDE 7850 27.4 32.4 85 31.7 33.9 94
PHILLIPS BENCH 8200 27.3 26.2 104 30.0 26.6 113
SALT RIVER SUMMIT 7760 11.8 13.2 89 13.7 17.0 81
SNAKE RIVER STATION 6920 15.5 18.1 86 23.2 20.7 112
SPRING CREEK DIVIDE 9000 19.3 24.1 80 20.0 24.1 83
THUMB DIVIDE 7980 14.6 17.2 85 17.1 17.3 99
TOGWOTEE PASS 9580 23.5 22.5 104 25.7 22.3 115
TWO OCEAN PLATEAU 9240 31.2 25.2 124 23.4 25.3 92
WILLOW CREEK 8380 27.5 27.6 100 33.1 29.2 113
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Basin wide percent of average 94 102
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 22.3 21.6 103 21.0 18.4 114
BLACK BEAR 8170 40.4 36.0 112 35.9 36.4 99
CANYON 7870 14.9 12.5 119 18.4 14.0 131
FISHER CREEK 9100 36.9 32.0 115 33.3 33.1 101
MADISON PLATEAU 7750 26.3 22.9 115 28.9 24.0 120
NORTHEAST ENTRANCE 7350 8.3 10.5 79 11.7 11.6 101
PARKER PEAK 9400 22.5 19.7 114 20.6 14.7 140
SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120
THUMB DIVIDE 7980 14.6 17.2 85 17.1 17.3 99
TWO OCEAN PLATEAU 9240 31.2 25.2 124 23.4 25.3 92
WHISKEY CREEK 6800 16.5 15.8 104 22.8 18.9 121
WHITE MILL 8700 23.8 22.1 108 23.8 24.5 97
WOLVERINE 7650 9.0 11.3 80 11.5 11.9 97
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Basin wide percent of average 107 108
WIND RIVER
BURROUGHS CREEK 8750 13.4 13.5 99 16.3 14.8 110
COLD SPRINGS 9630 5.7 8.0 71 8.7 9.1 96
DEER PARK 9700 13.1 15.4 85 17.5 19.6 89
HOBBS PARK 10100 11.8 13.0 91 12.2 10.8 113
LITTLE WARM 9370 8.3 10.5 79 11.7 11.8 99
SOUTH PASS 9040 12.5 15.3 82 15.3 16.2 94
ST. LAWRENCE ALT 8620 6.2 6.5 95 7.6 7.6 100
TOGWOTEE PASS 9580 23.5 22.5 104 25.7 22.3 115
TOWNSEND CREEK 8700 7.7 7.6 101 10.9 9.7 112
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Basin wide percent of average 91 103
BIGHORN BASIN
BALD MTN. 9380 14.7 17.4 84 13.7 15.3 90
BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 7.0 110
BLACKWATER 9780 21.2 22.2 95 19.9 18.5 108
BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.7 121
EVENING STAR 9200 25.6 27.0 95 29.0 23.2 125
GRAVE SPRINGS 8550 8.4 8.2 102 9.1 8.6 106
KIRWIN 9550 10.3 10.0 103 12.7 9.9 128
MARQUETTE 8760 4.7 7.5 63 8.2 8.2 100
MIDDLE POWDER 7760 9.9 10.0 99 8.1 10.5 77
OWL CREEK 8975 4.8 4.6 104 5.8 4.8 121
POWDER RIVER PASS 9480 10.7 9.6 111 12.7 10.8 118
SHELL CREEK 9580 13.8 12.8 108 13.4 11.6 116
SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.4 114
TIMBER CREEK 7950 3.5 4.8 73 6.9 6.0 115
YOUNTS PEAK 8350 14.7 15.6 94 15.8 14.6 108
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Basin wide percent of average 96 112
SHOSHONE RIVER
BLACKWATER 9780 21.2 22.2 95 19.9 18.5 108
EVENING STAR 9200 25.6 27.0 95 29.0 23.2 125
KIRWIN 9550 10.3 10.0 103 12.7 9.9 128
MARQUETTE 8760 4.7 7.5 63 8.2 8.2 100
SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120
SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.4 114
YOUNTS PEAK 8350 14.7 15.6 94 15.8 14.6 108
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Basin wide percent of average 91 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 7.0 110
BIG GOOSE 7990 7.2 8.5 85 10.2 7.3 140
BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.7 121
BURGESS JUNCTION 7880 10.6 9.9 107 12.2 10.4 117
CLOUD PEAK RESERVOIR 9860 13.5 11.3 119 13.4 10.8 124
DOME LAKE 8880 9.2 10.4 88 12.6 11.1 114
GRAVE SPRINGS 8550 8.4 8.2 102 9.1 8.6 106
HANSEN SAWMILL 8360 5.4 5.7 95 7.6 6.9 110
MIDDLE POWDER 7760 9.9 10.0 99 8.1 10.5 77
POWDER RIVER PASS 9480 10.7 9.6 111 12.7 10.8 118
SUCKER CREEK 8880 12.2 10.1 121 14.3 11.5 124
TIE CREEK 6870 6.5 5.7 114 10.5 8.5 124
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Basin wide percent of average 107 115
BELLE FOURCHE
BLIND PARK 6890 6.8 8.3 82 9.6 10.0 96
COLE CANYON 5910 5.6 6.2 90 6.7 5.9 114
NORTH RAPID CREEK 6130 7.7 7.4 104 7.8 7.9 99
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Basin wide percent of average 92 101
UPPER N. PLATTE RIVER
COLUMBINE 9160 24.4 23.6 103 25.4 22.7 112
DIVIDE PEAK 8880 20.8 17.3 120 21.2 18.5 115
ELK RIVER 8700 23.2 17.5 133 21.4 17.5 122
JOE WRIGHT 10120 20.7 18.8 110 24.3 21.9 111
NORTH FRENCH CREEK 10130 27.4 25.1 109 26.6 22.0 121
OLD BATTLE 10000 29.2 28.8 101 33.5 31.0 108
SAGE CREEK BASIN 7850 16.4 10.0 164 16.6 10.8 154
SOUTH BRUSH CREEK 8440 12.5 11.4 110 15.8 14.4 110
TOWER 10500 38.4 40.7 94 -M 34.6 *
WEBBER SPRINGS 9250 23.1 23.9 97 26.8 23.9 112
WILLOW CREEK PASS 9540 13.9 10.5 132 14.0 11.3 124
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Basin wide percent of average 110 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.3 20.7 88 19.1 19.2 99
CASPER MTN. 7900 11.7 12.3 95 12.6 12.2 103
DEADMAN HILL 10220 15.2 14.2 107 15.8 14.7 107
DEER PARK 9700 13.1 15.4 85 17.5 19.6 89
LAPRELE CREEK 8375 6.6 9.8 67 9.3 11.0 85
RENO HILL 8400 11.8 11.7 101 13.6 12.6 108
ROACH 9700 17.1 15.1 113 19.6 16.4 120
SAND LAKE 10050 24.4 28.2 87 24.3 21.1 115
SOUTH PASS 9040 12.5 15.3 82 15.3 16.2 94
WINDY PEAK 7900 7.0 7.0 100 8.5 9.2 92
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Basin wide percent of average 92 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 15.5 11.0 141 15.3 13.7 112
DIVIDE PEAK 8880 20.8 17.3 120 21.2 18.5 115
OLD BATTLE 10000 29.2 28.8 101 33.5 31.0 108
SANDSTONE RS 8150 16.0 14.0 114 19.5 17.0 115
WHISKEY PARK 8950 30.0 26.8 112 30.9 25.5 121
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Basin wide percent of average 114 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.3 13.1 86 11.4 12.2 93
BLIND BULL SUM 8650 21.4 25.3 85 15.8 20.3 78
EAST RIM DIVIDE 7930 7.5 12.0 62 9.7 11.0 88
ELKHART PARK G.S. 9400 9.6 12.1 79 10.4 11.9 87
GROS VENTRE SUMMIT 8750 11.5 12.7 91 12.6 11.7 108
GUNSIGHT PASS 9820 10.7 -M * 12.4 -M *
KENDALL R.S. 7740 10.0 13.7 73 11.8 13.5 87
LOOMIS PARK 8240 13.6 16.0 85 15.3 16.0 96
NEW FORK LAKE 8340 8.2 10.4 79 8.3 10.3 81
SNIDER BASIN 8060 11.3 13.5 84 12.4 14.7 84
SPRING CREEK DIVIDE 9000 19.3 24.1 80 20.0 24.1 83
TRIPLE PEAK 8500 21.1 22.7 93 24.2 22.5 108
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Basin wide percent of average 82 90
LOWER GREEN RIVER
HAMS FORK 7840 10.6 12.1 88 8.7 11.1 78
HEWINTA 9519 12.6 10.2 124 14.9 12.7 117
HICKERSON PARK 9145 6.7 6.4 105 9.0 6.8 132
HOLE-IN-ROCK 9150 5.6 6.3 89 8.9 6.4 139
INDIAN CREEK 9425 20.4 24.7 83 -M 22.8 *
KELLEY R.S. 8180 12.5 15.4 81 15.1 18.4 82
STEEL CREEK PARK 10200 13.4 14.0 96 16.6 14.1 118
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Basin wide percent of average 92 105
UPPER BEAR RIVER
BUG LAKE 7950 16.0 18.8 85 15.4 17.4 89
HAYDEN FORK 9212 18.1 14.6 124 21.2 18.6 114
KELLEY R.S. 8180 12.5 15.4 81 15.1 18.4 82
LILY LAKE 9156 13.4 11.8 114 16.0 15.4 104
MONTE CRISTO 8960 25.3 27.2 93 23.9 22.9 104
SALT RIVER SUMMIT 7760 11.8 13.2 89 13.7 17.0 81
TRIAL LAKE 9992 19.4 22.7 85 22.1 22.4 99
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Basin wide percent of average 94 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.