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: APRIL 10 , 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 24.5 14.9 164 26.7 21.0 127
BLACK BEAR 8170 42.0 36.8 114 40.6 38.2 106
BLIND BULL SUM 8650 36.4 23.5 155 23.6 19.5 121
COTTONWOOD CREEK 7670 31.4 20.8 151 34.9 24.7 141
EAST RIM DIVIDE 7930 17.4 10.2 171 15.6 11.8 132
GRAND TARGHEE 9260 51.2 39.3 130 -M 31.1 *
GRANITE CREEK 6770 24.1 13.9 173 24.3 19.7 123
GRASSY LAKE 7265 43.7 31.4 139 39.9 35.9 111
GROS VENTRE SUMMIT 8750 14.6 12.8 114 14.9 13.0 115
GUNSIGHT PASS 9820 20.8 13.9 150 19.1 14.0 136
LEWIS LAKE DIVIDE 7850 40.5 30.1 135 -M 35.4 *
PHILLIPS BENCH 8200 35.6 25.7 139 34.7 28.2 123
SALT RIVER SUMMIT 7760 18.2 12.5 146 19.4 16.7 116
SNAKE RIVER STATION 6920 -M 14.4 * -M 22.5 *
SPRING CREEK DIVIDE 9000 36.1 22.7 159 33.2 23.8 139
THUMB DIVIDE 7980 21.1 14.7 144 18.9 18.7 101
TOGWOTEE PASS 9580 32.4 22.5 144 33.4 24.4 137
TWO OCEAN PLATEAU 9240 40.9 26.4 155 -M 27.2 *
WILLOW CREEK 8380 40.9 28.1 146 41.9 33.7 124
YOUNTS PEAK 8350 -M 14.5 * -M 15.8 *
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Basin Index (%) 143 123
MADISON-GALLATIN
BLACK BEAR 8170 42.0 36.8 114 40.6 38.2 106
CANYON 7870 15.4 12.4 124 17.0 16.2 105
MADISON PLATEAU 7750 25.6 21.9 117 25.3 26.3 96
WEST YELLOWSTONE 6700 13.5 8.9 152 16.3 14.2 115
WHISKEY CREEK 6800 17.6 14.7 120 21.2 20.2 105
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Basin Index (%) 120 105
YELLOWSTONE
BEARTOOTH LAKE 9360 32.0 21.6 148 30.2 19.8 153
BURNT MTN 5880 10.4 3.5 297 19.7 13.2 149
CANYON 7870 15.4 12.4 124 17.0 16.2 105
COLE CREEK 7850 22.7 15.1 150 16.3 13.2 123
EVENING STAR 9200 39.6 24.0 165 40.8 27.4 149
FISHER CREEK 9100 44.3 31.4 141 40.2 31.7 127
NORTHEAST ENTRANCE 7350 15.2 8.7 175 16.0 12.3 130
PARKER PEAK 9400 32.6 19.9 164 29.4 17.8 165
SYLVAN LAKE 8420 25.3 19.6 129 29.1 22.3 130
THUMB DIVIDE 7980 21.1 14.7 144 18.9 18.7 101
TWO OCEAN PLATEAU 9240 40.9 26.4 155 -M 27.2 *
WHITE MILL 8700 33.7 22.7 148 29.4 23.7 124
WOLVERINE 7650 17.3 9.5 182 17.2 12.2 141
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Basin Index (%) 153 133
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 15.9 *
CASTLE CREEK 8400 10.0 -M * 12.6 -M *
COLD SPRINGS 9630 9.8 6.3 156 13.6 10.1 135
DEER PARK 9700 17.4 16.1 108 19.8 20.3 98
HOBBS PARK 10100 16.2 14.5 112 14.5 13.7 106
KIRWIN 9550 19.2 9.7 198 18.2 11.6 157
LITTLE WARM 9370 14.8 10.3 144 17.4 13.0 134
OWL CREEK 8975 8.2 5.8 141 8.3 6.2 134
SOUTH PASS 9040 16.6 15.6 106 15.5 17.6 88
ST. LAWRENCE ALT 8620 5.2 6.9 75 9.4 9.1 103
TOGWOTEE PASS 9580 32.4 22.5 144 33.4 24.4 137
TOWNSEND CREEK 8700 8.2 9.8 84 10.0 12.3 81
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Basin Index (%) 126 116
BIGHORN BASIN
BALD MTN. 9380 26.5 19.3 137 20.7 17.2 120
BEAR TRAP MEADOW 8200 11.5 4.7 245 11.6 8.7 133
BONE SPRINGS DIV 9350 22.3 17.0 131 17.7 15.7 113
GRAVE SPRINGS 8550 13.3 9.5 140 13.4 10.8 124
KIRWIN 9550 19.2 9.7 198 18.2 11.6 157
MARQUETTE 8760 15.6 -M * 13.8 -M *
MIDDLE POWDER 7760 18.8 12.3 153 14.7 11.9 124
OWL CREEK 8975 8.2 5.8 141 8.3 6.2 134
POWDER RIVER PASS 9480 15.8 10.3 153 17.3 12.8 135
SHELL CREEK 9580 20.3 15.4 132 17.3 13.9 124
TIMBER CREEK 7950 6.8 5.1 133 9.4 7.5 125
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Basin Index (%) 149 128
SHOSHONE RIVER
BLACKWATER 9780 33.1 23.0 144 29.8 20.6 145
EVENING STAR 9200 39.6 24.0 165 40.8 27.4 149
MARQUETTE 8760 15.6 -M * 13.8 -M *
SYLVAN ROAD 7120 15.9 10.5 151 22.0 16.7 132
YOUNTS PEAK 8350 -M 14.5 * -M 15.8 *
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Basin Index (%) 154 143
POWDER RIVER
BEAR TRAP MEADOW 8200 11.5 4.7 245 11.6 8.7 133
CLOUD PEAK RESERVOIR 9860 21.3 15.1 141 19.0 13.6 140
GRAVE SPRINGS 8550 13.3 9.5 140 13.4 10.8 124
HANSEN SAWMILL 8360 10.4 6.1 170 12.8 8.7 147
MIDDLE POWDER 7760 18.8 12.3 153 14.7 11.9 124
POWDER RIVER PASS 9480 15.8 10.3 153 17.3 12.8 135
SOLDIER PARK 8720 13.3 -M * 12.2 -M *
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Basin Index (%) 157 134
TONGUE RIVER
BIG GOOSE 7990 12.7 9.8 130 15.3 11.8 130
BONE SPRINGS DIV 9350 22.3 17.0 131 17.7 15.7 113
BURGESS JUNCTION 7880 16.3 12.1 135 16.6 12.5 133
DOME LAKE 8880 16.5 11.9 139 15.4 13.9 111
LITTLE GOOSE 8870 14.9 -M * 17.7 -M *
SUCKER CREEK 8880 18.6 12.4 150 20.1 14.7 137
TIE CREEK 6870 9.4 5.5 171 15.6 12.0 130
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Basin Index (%) 139 125
BELLE FOURCHE
COLE CANYON 5910 7.8 4.5 173 14.4 9.6 150
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Basin Index (%) 173 150
CHEYENNE RIVER BASIN
BLIND PARK 6890 9.1 6.6 138 16.9 12.1 140
NORTH RAPID CREEK 6130 8.5 6.3 135 15.4 10.1 152
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Basin Index (%) 136 145
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.7 21.2 135 27.9 22.9 122
BLACKHALL MTN 9820 39.5 -M * -M -M *
COLUMBINE 9160 37.7 23.2 162 -M 25.8 *
DIVIDE PEAK 8880 21.5 20.2 106 24.2 21.7 112
JOE WRIGHT 10120 24.6 21.7 113 32.7 26.1 125
LAPRELE CREEK 8375 9.8 9.4 104 11.8 12.7 93
MED BOW 10500 2.6 -M * 36.3 -M *
NORTH FRENCH CREEK 10130 38.7 30.3 128 32.8 27.0 121
NEVER SUMMER 10280 25.8 20.4 126 19.9 -M *
OLD BATTLE 10000 36.0 31.8 113 38.6 35.3 109
RAWAH 9020 13.8 10.5 131 18.0 14.7 122
SAGE CREEK BASIN 7850 13.3 11.1 120 13.5 14.8 91
SAND LAKE 10050 35.8 29.6 121 34.1 25.1 136
SOUTH BRUSH CREEK 8440 13.5 11.7 115 16.1 15.5 104
TOWER 10500 53.7 46.6 115 -M 40.2 *
WEBBER SPRINGS 9250 27.6 23.3 118 29.7 27.0 110
WILLOW CREEK PASS 9540 15.3 12.4 123 15.1 13.6 111
ZIRKEL 9340 42.7 25.8 166 -M 28.8 *
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Basin Index (%) 126 115
SWEETWATER
DEER PARK 9700 17.4 16.1 108 19.8 20.3 98
LARSEN CREEK 9000 13.4 11.3 119 16.2 -M *
SOUTH PASS 9040 16.6 15.6 106 15.5 17.6 88
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Basin Index (%) 110 93
LOWER N. PLATTE
CASPER MTN. 7900 19.0 14.5 131 16.6 15.3 108
LAPRELE CREEK 8375 9.8 9.4 104 11.8 12.7 93
RENO HILL 8400 19.3 14.1 137 21.3 15.7 136
WINDY PEAK 7900 9.3 7.6 122 12.3 10.7 115
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Basin Index (%) 126 114
LARAMIE RIVER
BROOKLYN LAKE 10240 32.8 22.2 148 31.4 21.4 147
CINNABAR PARK 9574 26.0 21.4 121 30.5 24.5 124
CROW CREEK 8330 6.9 6.6 105 11.7 11.2 104
DEADMAN HILL 10220 26.1 16.4 159 24.5 17.6 139
RAWAH 9020 13.8 10.5 131 18.0 14.7 122
ROACH 9700 22.3 16.6 134 25.0 19.4 129
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Basin Index (%) 136 130
S. PLATTE
BLACK MOUNTAIN 8920 12.7 -M * -M -M *
CROW CREEK 8330 6.9 6.6 105 11.7 11.2 104
DEADMAN HILL 10220 26.1 16.4 159 24.5 17.6 139
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Basin Index (%) 143 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.3 8.7 130 18.6 15.2 122
DIVIDE PEAK 8880 21.5 20.2 106 24.2 21.7 112
ELK RIVER 8700 22.7 18.7 121 23.5 20.3 116
LITTLE SNAKE RIVER 8915 33.0 26.0 127 36.2 30.1 120
OLD BATTLE 10000 36.0 31.8 113 38.6 35.3 109
SAGE CREEK BASIN 7850 13.3 11.1 120 13.5 14.8 91
SANDSTONE RS 8150 13.0 12.6 103 19.1 18.6 103
WHISKEY PARK 8950 43.7 27.6 158 41.5 28.2 147
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Basin Index (%) 124 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.3 12.8 120 15.2 13.4 113
BLIND BULL SUM 8650 36.4 23.5 155 23.6 19.5 121
EAST RIM DIVIDE 7930 17.4 10.2 171 15.6 11.8 132
ELKHART PARK G.S. 9400 17.8 12.3 145 16.9 13.4 126
GROS VENTRE SUMMIT 8750 14.6 12.8 114 14.9 13.0 115
GUNSIGHT PASS 9820 20.8 13.9 150 19.1 14.0 136
KENDALL R.S. 7740 22.3 11.1 201 23.1 14.2 163
LOOMIS PARK 8240 25.5 13.8 185 24.9 17.3 144
NEW FORK LAKE 8340 16.6 10.2 163 13.6 10.8 126
POCKET CREEK 9360 12.5 -M * 12.8 -M *
SNIDER BASIN 8060 19.3 12.3 157 19.6 14.2 138
SPRING CREEK DIVIDE 9000 36.1 22.7 159 33.2 23.8 139
TRIPLE PEAK 8500 -M 21.3 * 37.5 25.3 148
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Basin Index (%) 156 135
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.6 -M * 13.8 -M *
BUCK PASTURE 9700 16.2 -M * 17.3 -M *
EF BLACKS FORK GS 9360 10.7 -M * 10.5 -M *
HAMS FORK 7840 15.7 10.0 157 14.0 11.5 122
HEWINTA 9519 13.3 10.7 124 14.7 14.3 103
HICKERSON PARK 9145 8.1 7.8 104 9.3 10.4 89
HOLE-IN-ROCK 9150 6.4 7.1 90 9.9 9.9 100
INDIAN CREEK 9425 33.4 24.8 135 27.2 22.6 120
KELLEY R.S. 8180 19.3 14.4 134 21.4 18.2 118
SPIRIT LK 10235 10.8 -M * 14.5 -M *
STEEL CREEK PARK 10200 20.5 16.0 128 16.9 16.8 101
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Basin Index (%) 129 109
UPPER BEAR RIVER
BEAR RIVER RS 8777 8.1 -M * 12.7 -M *
BUG LAKE 7950 24.6 18.9 130 21.2 19.5 109
BURTS MILLER RANCH 8000 4.9 -M * 7.0 -M *
CHALK CREEK #1 8993 22.9 24.6 93 23.1 25.5 91
HAYDEN FORK 9212 17.1 15.1 113 21.2 21.3 100
KELLEY R.S. 8180 19.3 14.4 134 21.4 18.2 118
LILY LAKE 9156 14.5 12.8 113 15.5 17.4 89
MONTE CRISTO 8960 28.1 27.9 101 26.2 26.2 100
SALT RIVER SUMMIT 7760 18.2 12.5 146 19.4 16.7 116
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Basin Index (%) 115 102
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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.