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 , 2014
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 18.2 13.5 135 19.1 17.2 111
BLACK BEAR 8170 30.0 29.6 101 28.3 30.8 92
BLIND BULL SUM 8650 29.3 17.9 164 19.1 16.0 119
COTTONWOOD CREEK 7670 25.8 16.9 153 27.6 19.6 141
EAST RIM DIVIDE 7930 14.1 8.1 174 12.5 9.6 130
GRAND TARGHEE 9260 37.8 30.2 125 28.1 24.8 113
GRANITE CREEK 6770 18.5 13.8 134 18.9 16.5 115
GRASSY LAKE 7265 29.9 26.2 114 29.7 29.4 101
GROS VENTRE SUMMIT 8750 12.4 9.7 128 11.6 10.1 115
GUNSIGHT PASS 9820 15.9 10.6 150 14.8 10.9 136
LEWIS LAKE DIVIDE 7850 28.2 25.2 112 29.6 28.8 103
PHILLIPS BENCH 8200 26.8 19.7 136 26.5 22.7 117
SALT RIVER SUMMIT 7760 15.1 10.6 142 16.2 13.4 121
SNAKE RIVER STATION 6920 16.3 14.2 115 19.2 18.6 103
SPRING CREEK DIVIDE 9000 29.8 18.6 160 27.8 19.3 144
THUMB DIVIDE 7980 12.9 12.3 105 12.2 14.6 84
TOGWOTEE PASS 9580 26.3 17.7 149 24.5 19.4 126
TWO OCEAN PLATEAU 9240 30.7 21.6 142 20.5 21.6 95
WILLOW CREEK 8380 31.8 22.2 143 31.3 26.8 117
YOUNTS PEAK 8350 -M 11.7 * -M 12.6 *
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Basin Index (%) 133 113
MADISON-GALLATIN
BLACK BEAR 8170 30.0 29.6 101 28.3 30.8 92
CANYON 7870 11.3 10.5 108 12.9 13.0 99
MADISON PLATEAU 7750 17.1 17.8 96 17.4 21.2 82
WEST YELLOWSTONE 6700 10.2 9.0 113 11.4 11.7 97
WHISKEY CREEK 6800 12.6 12.0 105 14.6 16.3 90
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Basin Index (%) 103 91
YELLOWSTONE
BEARTOOTH LAKE 9360 24.0 16.7 144 22.3 15.7 142
BURNT MTN 5880 8.0 4.0 200 14.2 9.5 149
CANYON 7870 11.3 10.5 108 12.9 13.0 99
COLE CREEK 7850 14.8 9.9 149 10.5 9.1 115
EVENING STAR 9200 31.4 19.1 164 -M 22.1 *
FISHER CREEK 9100 33.7 25.8 131 29.2 25.5 115
NORTHEAST ENTRANCE 7350 12.2 8.2 149 12.0 9.9 121
PARKER PEAK 9400 24.1 16.0 151 20.4 14.0 146
SYLVAN LAKE 8420 18.7 15.9 118 21.3 18.0 118
THUMB DIVIDE 7980 12.9 12.3 105 12.2 14.6 84
TWO OCEAN PLATEAU 9240 30.7 21.6 142 20.5 21.6 95
WHITE MILL 8700 25.9 18.3 142 22.1 18.9 117
WOLVERINE 7650 15.0 8.5 176 13.1 10.0 131
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Basin Index (%) 141 117
WIND RIVER
BURROUGHS CREEK 8750 -M 10.7 * -M 12.7 *
CASTLE CREEK 8400 9.5 -M * 11.0 -M *
COLD SPRINGS 9630 9.4 5.5 171 11.2 7.5 149
DEER PARK 9700 -M 10.8 * 14.0 15.3 92
HOBBS PARK 10100 11.3 9.7 116 9.9 9.5 104
KIRWIN 9550 15.7 7.0 224 -M 8.8 *
LITTLE WARM 9370 11.9 7.9 151 13.9 9.8 142
OWL CREEK 8975 5.8 3.9 149 5.8 4.3 135
SOUTH PASS 9040 12.4 11.4 109 11.2 13.4 84
ST. LAWRENCE ALT 8620 3.1 5.2 60 6.2 6.6 94
TOGWOTEE PASS 9580 26.3 17.7 149 24.5 19.4 126
TOWNSEND CREEK 8700 5.2 6.5 80 6.0 8.6 70
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Basin Index (%) 135 109
BIGHORN BASIN
BALD MTN. 9380 19.8 14.7 135 14.9 13.1 114
BEAR TRAP MEADOW 8200 8.1 4.4 184 8.3 6.1 136
BONE SPRINGS DIV 9350 17.1 12.0 142 13.0 11.7 111
GRAVE SPRINGS 8550 9.1 6.9 132 9.4 7.9 119
KIRWIN 9550 15.7 7.0 224 -M 8.8 *
MARQUETTE 8760 8.7 -M * 9.4 -M *
MIDDLE POWDER 7760 12.3 8.0 154 10.1 8.7 116
OWL CREEK 8975 5.8 3.9 149 5.8 4.3 135
POWDER RIVER PASS 9480 12.6 8.0 158 13.1 9.6 136
SHELL CREEK 9580 15.5 11.6 134 13.1 10.7 122
TIMBER CREEK 7950 5.1 3.7 138 6.8 5.3 128
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Basin Index (%) 151 122
SHOSHONE RIVER
BLACKWATER 9780 25.8 17.2 150 22.8 16.1 142
EVENING STAR 9200 31.4 19.1 164 -M 22.1 *
MARQUETTE 8760 8.7 -M * 9.4 -M *
SYLVAN ROAD 7120 13.0 9.4 138 17.1 13.9 123
YOUNTS PEAK 8350 -M 11.7 * -M 12.6 *
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Basin Index (%) 154 133*
POWDER RIVER
BEAR TRAP MEADOW 8200 8.1 4.4 184 8.3 6.1 136
CLOUD PEAK RESERVOIR 9860 15.5 10.4 149 13.2 9.6 138
GRAVE SPRINGS 8550 9.1 6.9 132 9.4 7.9 119
HANSEN SAWMILL 8360 7.1 4.7 151 9.3 6.1 152
MIDDLE POWDER 7760 12.3 8.0 154 10.1 8.7 116
POWDER RIVER PASS 9480 12.6 8.0 158 13.1 9.6 136
SOLDIER PARK 8720 8.6 -M * 8.4 -M *
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Basin Index (%) 153 132
TONGUE RIVER
BIG GOOSE 7990 7.9 6.2 127 9.9 7.9 125
BONE SPRINGS DIV 9350 17.1 12.0 142 13.0 11.7 111
BURGESS JUNCTION 7880 11.1 8.3 134 11.8 9.0 131
DOME LAKE 8880 10.8 8.7 124 10.0 10.0 100
LITTLE GOOSE 8870 9.3 -M * 11.2 -M *
SUCKER CREEK 8880 13.0 8.9 146 14.3 10.6 135
TIE CREEK 6870 6.2 4.3 144 10.8 8.4 129
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Basin Index (%) 137 121
BELLE FOURCHE
COLE CANYON 5910 4.8 5.0 96 -M 7.1 *
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Basin Index (%) 96 *
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.9 6.4 123 14.4 9.4 153
NORTH RAPID CREEK 6130 7.6 5.9 129 12.7 7.6 167
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Basin Index (%) 126 159
UPPER N. PLATTE
ARAPAHO RIDGE 10960 22.5 16.7 135 21.6 17.7 122
BLACKHALL MTN 9820 30.1 -M * 27.2 -M *
COLUMBINE 9160 29.9 19.8 151 -M 20.3 *
DIVIDE PEAK 8880 14.8 15.8 94 18.1 16.8 108
JOE WRIGHT 10120 16.6 16.6 100 25.7 19.9 129
LAPRELE CREEK 8375 6.7 7.8 86 7.9 9.3 85
MED BOW 10500 14.0 -M * 28.0 -M *
NORTH FRENCH CREEK 10130 -M 21.1 * -M 21.1 *
NEVER SUMMER 10280 19.9 16.2 123 15.3 -M *
OLD BATTLE 10000 27.1 23.9 113 30.3 27.9 109
RAWAH 9020 11.2 8.8 127 13.9 10.9 128
SAGE CREEK BASIN 7850 9.1 10.6 86 10.1 11.8 86
SAND LAKE 10050 25.6 21.2 121 24.8 18.9 131
SOUTH BRUSH CREEK 8440 9.5 10.3 92 11.7 11.7 100
TOWER 10500 44.1 36.3 121 -M 31.8 *
WEBBER SPRINGS 9250 20.8 18.7 111 23.1 21.1 109
WILLOW CREEK PASS 9540 11.2 9.5 118 11.8 10.4 113
ZIRKEL 9340 35.7 23.0 155 27.9 23.4 119
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Basin Index (%) 119 114
SWEETWATER
DEER PARK 9700 -M 10.8 * 14.0 15.3 92
LARSEN CREEK 9000 10.8 9.5 114 12.7 -M *
SOUTH PASS 9040 12.4 11.4 109 11.2 13.4 84
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Basin Index (%) 111 88
LOWER N. PLATTE
CASPER MTN. 7900 -M 10.2 * -M 11.1 *
LAPRELE CREEK 8375 6.7 7.8 86 7.9 9.3 85
RENO HILL 8400 12.6 10.0 126 14.6 11.1 132
WINDY PEAK 7900 6.0 5.7 105 8.5 7.8 109
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Basin Index (%) 108 110
LARAMIE RIVER
BROOKLYN LAKE 10240 25.4 15.0 169 24.3 16.0 152
CINNABAR PARK 9574 19.0 17.1 111 20.5 19.7 104
CROW CREEK 8330 6.5 6.7 97 9.4 7.8 121
DEADMAN HILL 10220 20.1 12.4 162 18.8 12.7 148
RAWAH 9020 11.2 8.8 127 13.9 10.9 128
ROACH 9700 -M 12.4 * -M 14.7 *
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Basin Index (%) 137 130
S. PLATTE
BLACK MOUNTAIN 8920 9.6 -M * 10.9 -M *
CROW CREEK 8330 6.5 6.7 97 9.4 7.8 121
DEADMAN HILL 10220 20.1 12.4 162 18.8 12.7 148
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Basin Index (%) 139 138
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.4 9.9 95 14.1 12.1 117
DIVIDE PEAK 8880 14.8 15.8 94 18.1 16.8 108
ELK RIVER 8700 18.2 15.5 117 18.5 15.9 116
LITTLE SNAKE RIVER 8915 25.5 19.7 129 29.4 24.9 118
OLD BATTLE 10000 27.1 23.9 113 30.3 27.9 109
SAGE CREEK BASIN 7850 9.1 10.6 86 10.1 11.8 86
SANDSTONE RS 8150 10.1 10.4 97 14.9 15.0 99
WHISKEY PARK 8950 33.4 21.5 155 31.0 22.4 138
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Basin Index (%) 116 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.7 10.1 126 11.9 10.5 113
BLIND BULL SUM 8650 29.3 17.9 164 19.1 16.0 119
EAST RIM DIVIDE 7930 14.1 8.1 174 12.5 9.6 130
ELKHART PARK G.S. 9400 14.6 9.4 155 13.5 10.5 129
GROS VENTRE SUMMIT 8750 12.4 9.7 128 11.6 10.1 115
GUNSIGHT PASS 9820 15.9 10.6 150 14.8 10.9 136
KENDALL R.S. 7740 17.5 9.7 180 17.3 11.6 149
LOOMIS PARK 8240 19.2 11.7 164 19.6 14.0 140
NEW FORK LAKE 8340 13.0 8.2 159 10.8 8.8 123
POCKET CREEK 9360 10.7 -M * 10.8 -M *
SNIDER BASIN 8060 -M 9.6 * -M 11.5 *
SPRING CREEK DIVIDE 9000 29.8 18.6 160 27.8 19.3 144
TRIPLE PEAK 8500 29.1 16.8 173 30.5 20.2 151
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Basin Index (%) 159 134
LOWER GREEN RIVER
BLACKS FORK JCT 8870 7.0 -M * 10.8 -M *
BUCK PASTURE 9700 11.5 -M * 12.9 -M *
EF BLACKS FORK GS 9360 7.6 -M * 8.4 -M *
HAMS FORK 7840 13.7 9.2 149 11.9 9.2 129
HEWINTA 9519 8.4 7.9 106 11.4 10.8 106
HICKERSON PARK 9145 6.0 5.9 102 7.4 7.6 97
HOLE-IN-ROCK 9150 5.6 5.6 100 7.4 7.1 104
INDIAN CREEK 9425 26.4 19.0 139 21.8 17.8 122
KELLEY R.S. 8180 15.8 12.1 131 17.5 14.6 120
SPIRIT LK 10235 7.2 -M * 10.6 -M *
STEEL CREEK PARK 10200 15.1 11.5 131 13.0 12.4 105
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Basin Index (%) 128 114
UPPER BEAR RIVER
BEAR RIVER RS 8777 7.7 -M * 9.9 -M *
BUG LAKE 7950 18.3 14.8 124 16.1 15.4 105
BURTS MILLER RANCH 8000 5.6 -M * 5.7 -M *
CHALK CREEK #1 8993 17.9 18.3 98 18.0 19.4 93
HAYDEN FORK 9212 12.7 12.1 105 16.6 16.4 101
KELLEY R.S. 8180 15.8 12.1 131 17.5 14.6 120
LILY LAKE 9156 11.2 10.3 109 12.4 13.2 94
MONTE CRISTO 8960 21.0 21.0 100 19.4 20.5 95
SALT RIVER SUMMIT 7760 15.1 10.6 142 16.2 13.4 121
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Basin Index (%) 113 103
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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.
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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.