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: MAY 3 , 2014
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 15.8 8.4 188 28.8 22.9 126
BLACK BEAR 8170 45.8 37.3 123 45.7 42.0 109
BLIND BULL SUM 8650 37.6 22.9 164 24.7 21.5 115
COTTONWOOD CREEK 7670 24.7 14.7 168 37.2 27.7 134
EAST RIM DIVIDE 7930 8.9 7.9 113 16.6 13.0 128
GRAND TARGHEE 9260 53.9 45.5 118 -M 34.9 *
GRANITE CREEK 6770 17.9 7.8 229 26.2 21.5 122
GRASSY LAKE 7265 38.4 28.3 136 44.1 39.5 112
GROS VENTRE SUMMIT 8750 13.9 11.3 123 15.8 14.8 107
GUNSIGHT PASS 9820 20.5 12.1 169 20.8 16.2 128
LEWIS LAKE DIVIDE 7850 41.9 29.7 141 44.1 38.8 114
PHILLIPS BENCH 8200 36.5 24.8 147 38.4 30.9 124
SALT RIVER SUMMIT 7760 11.6 7.6 153 20.8 18.5 112
SNAKE RIVER STATION 6920 11.8 6.2 190 28.4 24.9 114
SPRING CREEK DIVIDE 9000 38.0 24.3 156 34.6 26.4 131
THUMB DIVIDE 7980 18.4 11.3 163 22.1 21.1 105
TOGWOTEE PASS 9580 34.1 24.7 138 36.1 27.5 131
TWO OCEAN PLATEAU 9240 39.4 29.9 132 37.7 30.3 124
WILLOW CREEK 8380 38.1 22.3 171 44.7 37.8 118
YOUNTS PEAK 8350 -M 15.7 * -M 17.8 *
----- -----
Basin Index (%) 145 119
MADISON-GALLATIN
BLACK BEAR 8170 45.8 37.3 123 45.7 42.0 109
CANYON 7870 14.8 9.6 154 19.2 18.1 106
MADISON PLATEAU 7750 26.4 21.0 126 29.0 29.1 100
WEST YELLOWSTONE 6700 1.2 .6 200* 18.6 16.0 116
WHISKEY CREEK 6800 16.8 13.8 122 24.7 22.5 110
----- -----
Basin Index (%) 128 107
YELLOWSTONE
BEARTOOTH LAKE 9360 33.2 22.7 146 33.4 22.1 151
BURNT MTN 5880 2.7 .0 * 23.1 16.1 143
CANYON 7870 14.8 9.6 154 19.2 18.1 106
COLE CREEK 7850 24.0 16.7 144 19.4 16.6 117
EVENING STAR 9200 42.1 24.8 170 45.0 30.6 147
FISHER CREEK 9100 48.6 32.6 149 44.5 35.4 126
NORTHEAST ENTRANCE 7350 9.2 2.0 460 18.0 13.9 129
PARKER PEAK 9400 38.0 21.2 179 33.7 20.2 167
SYLVAN LAKE 8420 24.8 19.3 128 33.4 25.2 133
THUMB DIVIDE 7980 18.4 11.3 163 22.1 21.1 105
TWO OCEAN PLATEAU 9240 39.4 29.9 132 37.7 30.3 124
WHITE MILL 8700 35.8 23.9 150 32.9 26.5 124
WOLVERINE 7650 12.0 1.4 857 20.2 13.9 145
----- -----
Basin Index (%) 159 132
WIND RIVER
BURROUGHS CREEK 8750 -M 12.8 * -M 18.1 *
CASTLE CREEK 8400 4.0 -M * 13.3 -M *
COLD SPRINGS 9630 4.9 1.3 377 14.0 12.6 111
DEER PARK 9700 -M 15.7 * 21.8 23.6 92
HOBBS PARK 10100 14.9 16.0 93 15.9 16.9 94
KIRWIN 9550 19.6 10.6 185 20.0 14.0 143
LITTLE WARM 9370 12.2 8.4 145 18.5 15.5 119
OWL CREEK 8975 .4 .7 57 8.8 8.1 109
SOUTH PASS 9040 14.2 14.4 99 17.0 20.5 83
ST. LAWRENCE ALT 8620 .3 2.1 14 10.7 11.7 91
TOGWOTEE PASS 9580 34.1 24.7 138 36.1 27.5 131
TOWNSEND CREEK 8700 4.3 6.9 62 11.3 15.1 75
----- -----
Basin Index (%) 123 105
BIGHORN BASIN
BALD MTN. 9380 30.0 20.5 146 23.4 19.9 118
BEAR TRAP MEADOW 8200 6.4 .6 1067 12.8 10.8 119
BONE SPRINGS DIV 9350 23.0 16.4 140 20.5 18.4 111
GRAVE SPRINGS 8550 12.8 9.4 136 14.5 13.0 112
KIRWIN 9550 19.6 10.6 185 20.0 14.0 143
MARQUETTE 8760 15.4 -M * 15.6 -M *
MIDDLE POWDER 7760 18.5 11.4 162 16.7 14.3 117
OWL CREEK 8975 .4 .7 57 8.8 8.1 109
POWDER RIVER PASS 9480 13.8 9.1 152 18.7 15.2 123
SHELL CREEK 9580 20.4 16.0 128 19.5 16.5 118
TIMBER CREEK 7950 .3 2.7 11 11.1 10.2 109
----- -----
Basin Index (%) 149 118
SHOSHONE RIVER
BLACKWATER 9780 35.8 25.7 139 33.4 23.7 141
EVENING STAR 9200 42.1 24.8 170 45.0 30.6 147
MARQUETTE 8760 15.4 -M * 15.6 -M *
SYLVAN ROAD 7120 5.0 4.6 109 24.5 18.7 131
YOUNTS PEAK 8350 -M 15.7 * -M 17.8 *
----- -----
Basin Index (%) 150 141
POWDER RIVER
BEAR TRAP MEADOW 8200 6.4 .6 1067 12.8 10.8 119
CLOUD PEAK RESERVOIR 9860 24.2 16.4 148 23.1 16.9 137
GRAVE SPRINGS 8550 12.8 9.4 136 14.5 13.0 112
HANSEN SAWMILL 8360 7.2 1.8 400 14.5 11.0 132
MIDDLE POWDER 7760 18.5 11.4 162 16.7 14.3 117
POWDER RIVER PASS 9480 13.8 9.1 152 18.7 15.2 123
SOLDIER PARK 8720 11.6 -M * 14.5 -M *
----- -----
Basin Index (%) 170 124
TONGUE RIVER
BIG GOOSE 7990 12.3 9.3 132 18.0 14.3 126
BONE SPRINGS DIV 9350 23.0 16.4 140 20.5 18.4 111
BURGESS JUNCTION 7880 18.0 11.8 153 19.6 15.0 131
DOME LAKE 8880 17.5 11.3 155 18.6 16.6 112
LITTLE GOOSE 8870 15.1 -M * 20.5 -M *
SUCKER CREEK 8880 18.6 12.0 155 23.5 17.6 134
TIE CREEK 6870 6.4 2.5 256 18.1 14.6 124
----- -----
Basin Index (%) 151 123
BELLE FOURCHE
COLE CANYON 5910 3.5 .1 3500* 16.0 12.3 130
----- -----
Basin Index (%) 3500* 130
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.9 .2 950* 19.3 14.6 132
NORTH RAPID CREEK 6130 3.1 .5 620* 18.7 12.6 148
----- -----
Basin Index (%) 714* 140
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.7 22.3 133 30.8 26.4 117
BLACKHALL MTN 9820 39.6 -M * -M -M *
COLUMBINE 9160 29.8 17.5 170 -M 28.8 *
DIVIDE PEAK 8880 14.8 17.8 83 25.5 24.6 104
JOE WRIGHT 10120 29.5 22.9 129 37.6 30.2 125
LAPRELE CREEK 8375 6.0 5.6 107 14.4 15.2 95
MED BOW 10500 -M -M * 44.9 -M *
NORTH FRENCH CREEK 10130 40.3 32.8 123 39.6 31.0 128
NEVER SUMMER 10280 29.0 21.8 133 23.8 -M *
OLD BATTLE 10000 35.8 34.7 103 40.2 39.5 102
RAWAH 9020 9.3 5.2 179 20.5 17.5 117
SAGE CREEK BASIN 7850 .3 1.0 30* 13.9 16.3 85
SAND LAKE 10050 37.2 31.5 118 37.1 29.3 127
SOUTH BRUSH CREEK 8440 7.9 8.4 94 18.4 18.1 102
TOWER 10500 54.7 50.4 109 56.0 45.1 124
WEBBER SPRINGS 9250 21.8 21.3 102 31.2 30.2 103
WILLOW CREEK PASS 9540 16.8 14.5 116 17.3 16.0 108
ZIRKEL 9340 37.7 20.8 181 -M 31.2 *
----- -----
Basin Index (%) 122 113
SWEETWATER
DEER PARK 9700 -M 15.7 * 21.8 23.6 92
LARSEN CREEK 9000 6.2 8.6 72 16.6 -M *
SOUTH PASS 9040 14.2 14.4 99 17.0 20.5 83
----- -----
Basin Index (%) 89 88
LOWER N. PLATTE
CASPER MTN. 7900 17.8 12.8 139 19.1 18.3 104
LAPRELE CREEK 8375 6.0 5.6 107 14.4 15.2 95
RENO HILL 8400 19.1 12.2 157 24.9 19.2 130
WINDY PEAK 7900 6.2 3.4 182 14.6 13.2 111
----- -----
Basin Index (%) 144 111
LARAMIE RIVER
BROOKLYN LAKE 10240 31.0 23.1 134 33.8 25.0 135
CINNABAR PARK 9574 24.0 19.0 126 32.4 27.3 119
CROW CREEK 8330 .5 .0 * 14.4 13.6 106
DEADMAN HILL 10220 27.6 19.2 144 27.1 20.9 130
RAWAH 9020 9.3 5.2 179 20.5 17.5 117
ROACH 9700 20.2 17.1 118 26.9 22.5 120
----- -----
Basin Index (%) 135 122
S. PLATTE
BLACK MOUNTAIN 8920 10.0 -M * -M -M *
CROW CREEK 8330 .5 .0 * 14.4 13.6 106
DEADMAN HILL 10220 27.6 19.2 144 27.1 20.9 130
----- -----
Basin Index (%) 146* 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.3 110
DIVIDE PEAK 8880 14.8 17.8 83 25.5 24.6 104
ELK RIVER 8700 15.1 12.5 121 24.9 23.0 108
LITTLE SNAKE RIVER 8915 25.4 21.8 117 37.3 33.1 113
OLD BATTLE 10000 35.8 34.7 103 40.2 39.5 102
SAGE CREEK BASIN 7850 .3 1.0 30* 13.9 16.3 85
SANDSTONE RS 8150 3.4 5.1 67 19.4 21.0 92
WHISKEY PARK 8950 37.6 26.8 140 43.1 31.8 136
----- -----
Basin Index (%) 111 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.6 9.8 139 15.7 15.3 103
BLIND BULL SUM 8650 37.6 22.9 164 24.7 21.5 115
EAST RIM DIVIDE 7930 8.9 7.9 113 16.6 13.0 128
ELKHART PARK G.S. 9400 17.6 10.8 163 18.3 15.2 120
GROS VENTRE SUMMIT 8750 13.9 11.3 123 15.8 14.8 107
GUNSIGHT PASS 9820 20.5 12.1 169 20.8 16.2 128
KENDALL R.S. 7740 14.8 3.2 462 23.8 15.6 153
LOOMIS PARK 8240 19.8 10.5 189 26.3 19.1 138
NEW FORK LAKE 8340 10.4 6.0 173 14.0 12.3 114
POCKET CREEK 9360 12.4 -M * 13.6 -M *
SNIDER BASIN 8060 11.2 8.9 126 20.5 15.7 131
SPRING CREEK DIVIDE 9000 38.0 24.3 156 34.6 26.4 131
TRIPLE PEAK 8500 31.1 16.7 186 39.3 28.1 140
----- -----
Basin Index (%) 164 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.4 -M * 15.2 -M *
BUCK PASTURE 9700 11.3 -M * 19.7 -M *
EF BLACKS FORK GS 9360 5.0 -M * 11.6 -M *
HAMS FORK 7840 6.5 2.0 325 15.1 13.2 114
HEWINTA 9519 5.5 4.4 125 16.2 16.4 99
HICKERSON PARK 9145 .1 3.5 3 9.6 12.2 79
HOLE-IN-ROCK 9150 .0 2.0 0 11.1 11.6 96
INDIAN CREEK 9425 31.5 22.5 140 28.5 25.2 113
KELLEY R.S. 8180 13.9 10.8 129 21.8 20.3 107
SPIRIT LK 10235 7.7 -M * 15.8 -M *
STEEL CREEK PARK 10200 21.5 17.4 124 18.6 19.3 96
----- -----
Basin Index (%) 126 102
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.3 -M *
BUG LAKE 7950 18.7 14.2 132 22.3 21.8 102
BURTS MILLER RANCH 8000 .2 -M * 7.9 -M *
CHALK CREEK #1 8993 19.9 23.8 84 25.9 28.7 90
HAYDEN FORK 9212 8.2 8.8 93 24.1 24.0 100
KELLEY R.S. 8180 13.9 10.8 129 21.8 20.3 107
LILY LAKE 9156 9.8 9.9 99 17.4 19.8 88
MONTE CRISTO 8960 22.8 25.8 88 28.1 29.5 95
SALT RIVER SUMMIT 7760 11.6 7.6 153 20.8 18.5 112
----- -----
Basin Index (%) 104 99
-----------------------------------------------------------------------------
-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.