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: MAY 15 , 2014
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 10.7 1.2 892* 30.2 24.0 126
BLACK BEAR 8170 46.1 36.0 128 48.3 43.8 110
BLIND BULL SUM 8650 36.8 22.0 167 25.8 22.8 113
COTTONWOOD CREEK 7670 23.5 10.3 228 39.4 29.5 134
EAST RIM DIVIDE 7930 1.9 3.9 49 17.5 13.9 126
GRAND TARGHEE 9260 53.1 45.1 118 44.7 36.6 122
GRANITE CREEK 6770 13.5 1.2 1125* 27.5 22.5 122
GRASSY LAKE 7265 33.3 22.2 150 46.5 41.2 113
GROS VENTRE SUMMIT 8750 12.9 8.6 150 17.1 15.7 109
GUNSIGHT PASS 9820 19.7 12.2 161 22.1 17.4 127
LEWIS LAKE DIVIDE 7850 40.6 26.2 155 46.7 40.3 116
PHILLIPS BENCH 8200 34.5 21.9 158 39.5 32.4 122
SALT RIVER SUMMIT 7760 7.8 1.5 520 22.2 19.5 114
SNAKE RIVER STATION 6920 6.2 .0 * 30.4 26.0 117
SPRING CREEK DIVIDE 9000 36.7 22.6 162 36.4 27.7 131
THUMB DIVIDE 7980 14.5 5.1 284 23.5 22.3 105
TOGWOTEE PASS 9580 35.0 24.5 143 37.4 29.1 129
TWO OCEAN PLATEAU 9240 40.8 29.2 140 39.7 32.2 123
WILLOW CREEK 8380 34.2 19.5 175 47.2 40.1 118
YOUNTS PEAK 8350 -M 13.8 * -M 19.0 *
----- -----
Basin Index (%) 160 120
MADISON-GALLATIN
BLACK BEAR 8170 46.1 36.0 128 48.3 43.8 110
CANYON 7870 11.9 5.3 225 20.3 19.4 105
MADISON PLATEAU 7750 25.6 17.2 149 30.7 30.6 100
WEST YELLOWSTONE 6700 .0 .0 * 19.5 17.0 115
WHISKEY CREEK 6800 14.4 8.6 167 26.1 23.6 111
----- -----
Basin Index (%) 146 108
YELLOWSTONE
BEARTOOTH LAKE 9360 34.8 22.6 154 34.8 23.7 147
BURNT MTN 5880 .0 .0 * 25.6 18.8 136
CANYON 7870 11.9 5.3 225 20.3 19.4 105
COLE CREEK 7850 26.7 17.1 156 22.7 19.0 119
EVENING STAR 9200 42.0 25.3 166 46.5 32.6 143
FISHER CREEK 9100 48.7 34.1 143 46.8 37.5 125
NORTHEAST ENTRANCE 7350 4.4 .0 * 19.3 15.1 128
PARKER PEAK 9400 38.5 21.6 178 35.3 21.8 162
SYLVAN LAKE 8420 23.5 17.0 138 35.3 26.9 131
THUMB DIVIDE 7980 14.5 5.1 284 23.5 22.3 105
TWO OCEAN PLATEAU 9240 40.8 29.2 140 39.7 32.2 123
WHITE MILL 8700 36.8 24.4 151 35.0 28.3 124
WOLVERINE 7650 5.6 .0 * 21.1 15.1 140
----- -----
Basin Index (%) 163 130
WIND RIVER
BURROUGHS CREEK 8750 -M 11.3 * -M 19.4 *
CASTLE CREEK 8400 .0 -M * 14.7 -M *
COLD SPRINGS 9630 1.4 .2 700* 15.7 14.0 112
DEER PARK 9700 17.2 13.5 127 24.0 25.5 94
HOBBS PARK 10100 15.9 15.0 106 18.2 18.6 98
KIRWIN 9550 19.9 10.4 191 22.1 15.4 144
LITTLE WARM 9370 10.9 6.1 179 20.1 16.9 119
OWL CREEK 8975 .0 .0 * 9.4 9.2 102
SOUTH PASS 9040 13.2 10.1 131 19.1 22.1 86
ST. LAWRENCE ALT 8620 .8 .1 800* 12.6 13.1 96
TOGWOTEE PASS 9580 35.0 24.5 143 37.4 29.1 129
TOWNSEND CREEK 8700 2.5 1.2 208 13.9 16.6 84
----- -----
Basin Index (%) 144 107
BIGHORN BASIN
BALD MTN. 9380 31.6 20.7 153 25.3 21.7 117
BEAR TRAP MEADOW 8200 2.4 .0 * 13.9 12.2 114
BONE SPRINGS DIV 9350 26.2 15.9 165 22.0 20.3 108
GRAVE SPRINGS 8550 10.3 6.4 161 15.2 14.7 103
KIRWIN 9550 19.9 10.4 191 22.1 15.4 144
MARQUETTE 8760 15.9 -M * 17.8 -M *
MIDDLE POWDER 7760 15.9 8.9 179 17.4 15.8 110
OWL CREEK 8975 .0 .0 * 9.4 9.2 102
POWDER RIVER PASS 9480 13.0 8.3 157 20.0 16.8 119
SHELL CREEK 9580 21.8 16.6 131 21.2 18.1 117
TIMBER CREEK 7950 1.4 .0 * 13.4 11.7 115
----- -----
Basin Index (%) 163 115
SHOSHONE RIVER
BLACKWATER 9780 36.2 24.8 146 34.7 25.3 137
EVENING STAR 9200 42.0 25.3 166 46.5 32.6 143
MARQUETTE 8760 15.9 -M * 17.8 -M *
SYLVAN ROAD 7120 .0 .0 * 25.7 19.8 130
YOUNTS PEAK 8350 -M 13.8 * -M 19.0 *
----- -----
Basin Index (%) 156* 138
POWDER RIVER
BEAR TRAP MEADOW 8200 2.4 .0 * 13.9 12.2 114
CLOUD PEAK RESERVOIR 9860 25.0 16.3 153 25.4 19.0 134
GRAVE SPRINGS 8550 10.3 6.4 161 15.2 14.7 103
HANSEN SAWMILL 8360 4.8 .0 * 16.1 12.5 129
MIDDLE POWDER 7760 15.9 8.9 179 17.4 15.8 110
POWDER RIVER PASS 9480 13.0 8.3 157 20.0 16.8 119
SOLDIER PARK 8720 9.7 -M * 16.3 -M *
----- -----
Basin Index (%) 179 119
TONGUE RIVER
BIG GOOSE 7990 11.8 8.8 134 19.7 16.6 119
BONE SPRINGS DIV 9350 26.2 15.9 165 22.0 20.3 108
BURGESS JUNCTION 7880 17.7 10.6 167 21.0 16.6 127
DOME LAKE 8880 17.1 9.7 176 20.6 18.5 111
LITTLE GOOSE 8870 14.6 -M * 22.7 -M *
SUCKER CREEK 8880 18.6 11.3 165 25.2 19.7 128
TIE CREEK 6870 4.8 .2 2400* 19.5 16.8 116
----- -----
Basin Index (%) 170 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.2 14.4 119
----- -----
Basin Index (%) * 119
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.6 16.2 127
NORTH RAPID CREEK 6130 .0 .0 * 19.6 14.2 138
----- -----
Basin Index (%) * 132
UPPER N. PLATTE
ARAPAHO RIDGE 10960 31.0 21.6 144 34.5 28.2 122
BLACKHALL MTN 9820 39.7 -M * -M -M *
COLUMBINE 9160 27.5 8.5 324 -M 30.2 *
DIVIDE PEAK 8880 13.0 10.5 124 29.6 26.0 114
JOE WRIGHT 10120 30.9 22.8 136 40.4 32.2 125
LAPRELE CREEK 8375 2.3 .0 * 16.6 16.4 101
MED BOW 10500 -M -M * 48.2 -M *
NORTH FRENCH CREEK 10130 40.5 32.1 126 42.1 33.0 128
NEVER SUMMER 10280 28.9 22.1 131 25.0 -M *
OLD BATTLE 10000 40.1 35.1 114 43.5 41.5 105
RAWAH 9020 7.8 1.4 557 22.6 18.8 120
SAGE CREEK BASIN 7850 2.6 .0 * 14.5 17.2 84
SAND LAKE 10050 40.3 30.5 132 41.7 31.2 134
SOUTH BRUSH CREEK 8440 1.9 1.5 127 19.5 19.6 99
TOWER 10500 56.2 49.9 113 59.6 47.2 126
WEBBER SPRINGS 9250 20.8 16.4 127 35.7 31.7 113
WILLOW CREEK PASS 9540 15.8 11.4 139 19.0 17.0 112
ZIRKEL 9340 34.1 16.7 204 -M 33.2 *
----- -----
Basin Index (%) 140 116
SWEETWATER
DEER PARK 9700 17.2 13.5 127 24.0 25.5 94
LARSEN CREEK 9000 2.9 5.0 58 17.8 -M *
SOUTH PASS 9040 13.2 10.1 131 19.1 22.1 86
----- -----
Basin Index (%) 116 91
LOWER N. PLATTE
CASPER MTN. 7900 14.9 9.1 164 20.7 19.9 104
LAPRELE CREEK 8375 2.3 .0 * 16.6 16.4 101
RENO HILL 8400 19.0 7.8 244 27.7 20.8 133
WINDY PEAK 7900 2.4 .0 * 16.7 14.2 118
----- -----
Basin Index (%) 228 115
LARAMIE RIVER
BROOKLYN LAKE 10240 31.1 19.7 158 37.8 26.6 142
CINNABAR PARK 9574 23.2 15.3 152 36.7 29.2 126
CROW CREEK 8330 .9 .0 * 17.6 14.9 118
DEADMAN HILL 10220 28.7 18.3 157 30.2 22.4 135
RAWAH 9020 7.8 1.4 557 22.6 18.8 120
ROACH 9700 20.0 13.9 144 30.8 24.0 128
----- -----
Basin Index (%) 163 129
S. PLATTE
BLACK MOUNTAIN 8920 7.3 -M * -M -M *
CROW CREEK 8330 .9 .0 * 17.6 14.9 118
DEADMAN HILL 10220 28.7 18.3 157 30.2 22.4 135
----- -----
Basin Index (%) 162* 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.9 18.4 108
DIVIDE PEAK 8880 13.0 10.5 124 29.6 26.0 114
ELK RIVER 8700 10.2 3.3 309 26.6 24.2 110
LITTLE SNAKE RIVER 8915 -M 18.0 * -M 34.9 *
OLD BATTLE 10000 40.1 35.1 114 43.5 41.5 105
SAGE CREEK BASIN 7850 2.6 .0 * 14.5 17.2 84
SANDSTONE RS 8150 -M .0 * 20.4 22.2 92
WHISKEY PARK 8950 34.8 24.6 141 45.6 33.5 136
----- -----
Basin Index (%) 137 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.1 7.6 159 17.2 16.5 104
BLIND BULL SUM 8650 36.8 22.0 167 25.8 22.8 113
EAST RIM DIVIDE 7930 1.9 3.9 49 17.5 13.9 126
ELKHART PARK G.S. 9400 17.1 8.5 201 20.3 16.4 124
GROS VENTRE SUMMIT 8750 12.9 8.6 150 17.1 15.7 109
GUNSIGHT PASS 9820 19.7 12.2 161 22.1 17.4 127
KENDALL R.S. 7740 10.4 .0 * 24.8 16.5 150
LOOMIS PARK 8240 16.2 5.9 275 27.5 20.2 136
NEW FORK LAKE 8340 7.2 1.1 655 14.8 13.2 112
POCKET CREEK 9360 12.5 -M * 15.1 -M *
SNIDER BASIN 8060 2.2 4.8 46 21.5 16.6 130
SPRING CREEK DIVIDE 9000 36.7 22.6 162 36.4 27.7 131
TRIPLE PEAK 8500 27.4 12.7 216 41.2 29.8 138
----- -----
Basin Index (%) 183 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.8 -M *
BUCK PASTURE 9700 8.8 -M * 21.3 -M *
EF BLACKS FORK GS 9360 .8 -M * 13.3 -M *
HAMS FORK 7840 .4 .0 * 16.7 14.2 118
HEWINTA 9519 1.4 .1 1400* 18.3 17.5 105
HICKERSON PARK 9145 2.1 .0 * 12.1 13.2 92
HOLE-IN-ROCK 9150 .7 .0 * 13.3 12.7 105
INDIAN CREEK 9425 30.7 21.2 145 30.7 26.6 115
KELLEY R.S. 8180 11.8 6.4 184 23.5 21.5 109
SPIRIT LK 10235 5.8 -M * 18.7 -M *
STEEL CREEK PARK 10200 21.5 16.5 130 21.1 20.7 102
----- -----
Basin Index (%) 155* 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 15.1 10.2 148 24.4 23.1 106
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 17.3 19.4 89 27.6 30.4 91
HAYDEN FORK 9212 2.3 3.1 74 25.2 25.5 99
KELLEY R.S. 8180 11.8 6.4 184 23.5 21.5 109
LILY LAKE 9156 5.9 1.2 492* 18.7 21.0 89
MONTE CRISTO 8960 20.6 19.0 108 29.9 31.2 96
SALT RIVER SUMMIT 7760 7.8 1.5 520 22.2 19.5 114
----- -----
Basin Index (%) 133 100
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.