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: APRIL 19 , 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 21.6 12.0 180 27.3 21.6 126
BLACK BEAR 8170 43.6 36.8 118 41.7 39.6 105
BLIND BULL SUM 8650 37.4 24.0 156 23.7 20.1 118
COTTONWOOD CREEK 7670 30.1 18.8 160 35.2 25.7 137
EAST RIM DIVIDE 7930 16.0 9.6 167 16.0 12.2 131
GRAND TARGHEE 9260 52.0 41.9 124 -M 32.4 *
GRANITE CREEK 6770 22.3 11.1 201 24.7 20.2 122
GRASSY LAKE 7265 42.2 31.5 134 41.6 37.2 112
GROS VENTRE SUMMIT 8750 14.5 13.2 110 15.0 13.6 110
GUNSIGHT PASS 9820 21.6 13.6 159 19.4 14.8 131
LEWIS LAKE DIVIDE 7850 41.4 30.3 137 41.7 36.6 114
PHILLIPS BENCH 8200 34.7 25.7 135 35.3 29.0 122
SALT RIVER SUMMIT 7760 16.0 10.0 160 19.5 17.3 113
SNAKE RIVER STATION 6920 19.1 11.5 166 27.0 23.4 115
SPRING CREEK DIVIDE 9000 36.8 23.5 157 33.5 24.6 136
THUMB DIVIDE 7980 21.3 14.5 147 20.3 19.6 104
TOGWOTEE PASS 9580 33.4 23.7 141 34.2 25.5 134
TWO OCEAN PLATEAU 9240 41.4 27.9 148 35.1 28.4 124
WILLOW CREEK 8380 41.2 26.8 154 42.4 35.1 121
YOUNTS PEAK 8350 -M 15.1 * -M 16.6 *
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Basin Index (%) 144 120
MADISON-GALLATIN
BLACK BEAR 8170 43.6 36.8 118 41.7 39.6 105
CANYON 7870 16.0 12.3 130 17.8 16.9 105
MADISON PLATEAU 7750 25.8 22.9 113 26.2 27.4 96
WEST YELLOWSTONE 6700 10.7 7.8 137 17.0 15.0 113
WHISKEY CREEK 6800 17.9 15.2 118 22.1 21.1 105
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Basin Index (%) 120 104
YELLOWSTONE
BEARTOOTH LAKE 9360 33.2 23.2 143 31.3 20.6 152
BURNT MTN 5880 9.8 .0 * 21.2 14.1 150
CANYON 7870 16.0 12.3 130 17.8 16.9 105
COLE CREEK 7850 25.2 16.1 157 18.3 14.4 127
EVENING STAR 9200 40.8 24.9 164 42.2 28.6 148
FISHER CREEK 9100 45.5 32.3 141 41.3 33.2 124
NORTHEAST ENTRANCE 7350 14.8 7.0 211 16.7 12.9 129
PARKER PEAK 9400 34.6 20.8 166 30.7 18.6 165
SYLVAN LAKE 8420 24.9 20.4 122 30.4 23.4 130
THUMB DIVIDE 7980 21.3 14.5 147 20.3 19.6 104
TWO OCEAN PLATEAU 9240 41.4 27.9 148 35.1 28.4 124
WHITE MILL 8700 34.7 23.6 147 30.4 24.8 123
WOLVERINE 7650 16.1 7.5 215 18.3 12.8 143
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Basin Index (%) 155 132
WIND RIVER
BURROUGHS CREEK 8750 -M 13.1 * -M 16.7 *
CASTLE CREEK 8400 9.6 -M * 13.0 -M *
COLD SPRINGS 9630 9.1 4.9 186 13.6 10.8 126
DEER PARK 9700 -M 16.2 * 20.3 21.3 95
HOBBS PARK 10100 16.1 14.8 109 14.8 14.6 101
KIRWIN 9550 20.5 10.0 205 19.2 12.3 156
LITTLE WARM 9370 14.7 10.2 144 17.7 13.8 128
OWL CREEK 8975 6.8 4.2 162 8.5 6.7 127
SOUTH PASS 9040 15.8 15.6 101 15.9 18.5 86
ST. LAWRENCE ALT 8620 2.6 5.4 48 9.3 9.8 95
TOGWOTEE PASS 9580 33.4 23.7 141 34.2 25.5 134
TOWNSEND CREEK 8700 8.0 9.6 83 10.3 13.1 79
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Basin Index (%) 129 112
BIGHORN BASIN
BALD MTN. 9380 28.1 19.7 143 22.2 18.1 123
BEAR TRAP MEADOW 8200 11.2 3.5 320 12.6 9.3 135
BONE SPRINGS DIV 9350 23.9 16.2 148 18.9 16.6 114
GRAVE SPRINGS 8550 13.7 9.6 143 14.1 11.5 123
KIRWIN 9550 20.5 10.0 205 19.2 12.3 156
MARQUETTE 8760 -M -M * 14.2 -M *
MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.7 125
OWL CREEK 8975 6.8 4.2 162 8.5 6.7 127
POWDER RIVER PASS 9480 16.6 10.2 163 18.0 13.6 132
SHELL CREEK 9580 21.2 15.3 139 18.3 14.8 124
TIMBER CREEK 7950 6.9 4.9 141 10.4 8.4 124
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Basin Index (%) 159 128
SHOSHONE RIVER
BLACKWATER 9780 34.4 23.8 145 31.2 21.7 144
EVENING STAR 9200 40.8 24.9 164 42.2 28.6 148
MARQUETTE 8760 -M -M * 14.2 -M *
SYLVAN ROAD 7120 12.7 10.0 127 22.9 17.5 131
YOUNTS PEAK 8350 -M 15.1 * -M 16.6 *
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Basin Index (%) 150 142
POWDER RIVER
BEAR TRAP MEADOW 8200 11.2 3.5 320 12.6 9.3 135
CLOUD PEAK RESERVOIR 9860 22.8 15.7 145 20.7 14.7 141
GRAVE SPRINGS 8550 13.7 9.6 143 14.1 11.5 123
HANSEN SAWMILL 8360 10.7 5.0 214 13.9 9.5 146
MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.7 125
POWDER RIVER PASS 9480 16.6 10.2 163 18.0 13.6 132
SOLDIER PARK 8720 14.2 -M * 13.5 -M *
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Basin Index (%) 168 134
TONGUE RIVER
BIG GOOSE 7990 14.0 9.4 149 17.0 12.5 136
BONE SPRINGS DIV 9350 23.9 16.2 148 18.9 16.6 114
BURGESS JUNCTION 7880 17.9 12.4 144 18.0 13.4 134
DOME LAKE 8880 17.9 11.8 152 17.1 14.8 116
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 19.4 12.7 153 21.7 15.6 139
TIE CREEK 6870 9.3 4.5 207 16.8 12.7 132
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Basin Index (%) 153 128
BELLE FOURCHE
COLE CANYON 5910 7.1 2.2 323 14.7 10.3 143
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Basin Index (%) 323 143
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.2 4.2 171 17.4 12.8 136
NORTH RAPID CREEK 6130 6.7 4.4 152 16.1 10.6 152
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Basin Index (%) 162 143
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.2 21.4 141 29.4 24.3 121
BLACKHALL MTN 9820 39.6 -M * -M -M *
COLUMBINE 9160 36.2 20.7 175 -M 26.8 *
DIVIDE PEAK 8880 20.1 19.1 105 24.7 22.7 109
JOE WRIGHT 10120 25.2 22.2 114 33.9 27.6 123
LAPRELE CREEK 8375 9.0 8.3 108 12.5 13.5 93
MED BOW 10500 -M -M * 39.3 -M *
NORTH FRENCH CREEK 10130 38.8 32.0 121 36.9 28.3 130
NEVER SUMMER 10280 27.0 20.6 131 21.4 -M *
OLD BATTLE 10000 35.9 32.5 110 39.1 36.8 106
RAWAH 9020 12.4 8.6 144 18.8 15.5 121
SAGE CREEK BASIN 7850 9.7 6.6 147 13.6 15.2 89
SAND LAKE 10050 36.0 30.4 118 34.8 26.6 131
SOUTH BRUSH CREEK 8440 10.0 9.9 101 16.3 16.3 100
TOWER 10500 54.1 47.8 113 -M 41.8 *
WEBBER SPRINGS 9250 26.7 22.3 120 30.3 28.2 107
WILLOW CREEK PASS 9540 16.5 12.9 128 16.4 14.3 115
ZIRKEL 9340 42.0 22.8 184 -M 29.7 *
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Basin Index (%) 127 114
SWEETWATER
DEER PARK 9700 -M 16.2 * 20.3 21.3 95
LARSEN CREEK 9000 11.7 10.4 112 16.3 -M *
SOUTH PASS 9040 15.8 15.6 101 15.9 18.5 86
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Basin Index (%) 106 91
LOWER N. PLATTE
CASPER MTN. 7900 19.2 14.5 132 17.3 16.4 105
LAPRELE CREEK 8375 9.0 8.3 108 12.5 13.5 93
RENO HILL 8400 20.1 14.0 144 22.6 16.9 134
WINDY PEAK 7900 8.9 6.7 133 13.4 11.5 117
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Basin Index (%) 131 113
LARAMIE RIVER
BROOKLYN LAKE 10240 32.4 22.1 147 32.0 22.6 142
CINNABAR PARK 9574 26.6 20.3 131 31.3 25.3 124
CROW CREEK 8330 6.0 1.1 545 13.0 12.0 108
DEADMAN HILL 10220 26.1 16.8 155 25.2 18.8 134
RAWAH 9020 12.4 8.6 144 18.8 15.5 121
ROACH 9700 22.7 16.5 138 26.3 20.4 129
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Basin Index (%) 148 128
S. PLATTE
BLACK MOUNTAIN 8920 12.8 -M * -M -M *
CROW CREEK 8330 6.0 1.1 545 13.0 12.0 108
DEADMAN HILL 10220 26.1 16.8 155 25.2 18.8 134
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Basin Index (%) 179 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.7 4.9 137 18.8 16.0 118
DIVIDE PEAK 8880 20.1 19.1 105 24.7 22.7 109
ELK RIVER 8700 20.1 15.8 127 23.9 21.2 113
LITTLE SNAKE RIVER 8915 30.4 24.7 123 36.4 31.2 117
OLD BATTLE 10000 35.9 32.5 110 39.1 36.8 106
SAGE CREEK BASIN 7850 9.7 6.6 147 13.6 15.2 89
SANDSTONE RS 8150 9.7 10.4 93 19.2 19.4 99
WHISKEY PARK 8950 41.1 26.0 158 41.9 29.5 142
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Basin Index (%) 124 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.7 12.7 124 15.3 14.0 109
BLIND BULL SUM 8650 37.4 24.0 156 23.7 20.1 118
EAST RIM DIVIDE 7930 16.0 9.6 167 16.0 12.2 131
ELKHART PARK G.S. 9400 18.3 11.9 154 17.3 14.0 124
GROS VENTRE SUMMIT 8750 14.5 13.2 110 15.0 13.6 110
GUNSIGHT PASS 9820 21.6 13.6 159 19.4 14.8 131
KENDALL R.S. 7740 20.5 8.8 233 23.2 14.7 158
LOOMIS PARK 8240 24.6 13.1 188 25.3 17.9 141
NEW FORK LAKE 8340 14.9 9.0 166 13.7 11.2 122
POCKET CREEK 9360 12.6 -M * 12.9 -M *
SNIDER BASIN 8060 17.0 10.9 156 19.8 14.7 135
SPRING CREEK DIVIDE 9000 36.8 23.5 157 33.5 24.6 136
TRIPLE PEAK 8500 35.5 19.3 184 37.7 26.2 144
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Basin Index (%) 161 131
LOWER GREEN RIVER
BLACKS FORK JCT 8870 6.6 -M * 14.1 -M *
BUCK PASTURE 9700 14.1 -M * 17.8 -M *
EF BLACKS FORK GS 9360 8.4 -M * 10.7 -M *
HAMS FORK 7840 12.9 7.1 182 14.4 11.9 121
HEWINTA 9519 8.6 8.3 104 15.1 14.9 101
HICKERSON PARK 9145 4.0 5.6 71 9.4 11.0 85
HOLE-IN-ROCK 9150 4.2 6.0 70 10.4 10.5 99
INDIAN CREEK 9425 33.0 23.2 142 27.4 23.5 117
KELLEY R.S. 8180 17.8 12.9 138 21.2 18.8 113
SPIRIT LK 10235 9.7 -M * 14.8 -M *
STEEL CREEK PARK 10200 20.9 16.2 129 17.2 17.6 98
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Basin Index (%) 128 106
UPPER BEAR RIVER
BEAR RIVER RS 8777 4.8 -M * 13.3 -M *
BUG LAKE 7950 22.3 17.6 127 21.2 20.2 105
BURTS MILLER RANCH 8000 .4 -M * 7.2 -M *
CHALK CREEK #1 8993 22.5 24.7 91 24.3 26.6 91
HAYDEN FORK 9212 12.7 12.2 104 22.3 22.3 100
KELLEY R.S. 8180 17.8 12.9 138 21.2 18.8 113
LILY LAKE 9156 12.1 11.0 110 16.0 18.2 88
MONTE CRISTO 8960 25.3 27.6 92 26.4 27.2 97
SALT RIVER SUMMIT 7760 16.0 10.0 160 19.5 17.3 113
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Basin Index (%) 111 100
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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.
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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.