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 WEDNESDAY: MAY 7 , 2014
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 13.0 6.1 213 28.9 23.4 124
BLACK BEAR 8170 43.5 37.0 118 45.7 42.6 107
BLIND BULL SUM 8650 37.1 22.6 164 24.9 21.9 114
COTTONWOOD CREEK 7670 23.4 13.5 173 37.5 28.3 133
EAST RIM DIVIDE 7930 4.4 6.9 64 16.6 13.3 125
GRAND TARGHEE 9260 52.1 46.4 112 -M 35.7 *
GRANITE CREEK 6770 14.9 6.7 222 26.3 21.8 121
GRASSY LAKE 7265 33.4 27.0 124 44.2 40.1 110
GROS VENTRE SUMMIT 8750 12.7 10.2 125 15.7 15.1 104
GUNSIGHT PASS 9820 19.0 11.7 162 20.8 16.5 126
LEWIS LAKE DIVIDE 7850 39.0 29.4 133 44.3 39.3 113
PHILLIPS BENCH 8200 35.3 23.6 150 38.6 31.4 123
SALT RIVER SUMMIT 7760 7.9 6.2 127 20.9 18.8 111
SNAKE RIVER STATION 6920 8.3 4.0 208 28.5 25.3 113
SPRING CREEK DIVIDE 9000 35.3 24.1 146 34.9 26.8 130
THUMB DIVIDE 7980 14.9 9.7 154 22.3 21.5 104
TOGWOTEE PASS 9580 32.7 25.0 131 36.3 28.1 129
TWO OCEAN PLATEAU 9240 39.3 29.8 132 38.0 30.8 123
WILLOW CREEK 8380 33.3 21.7 153 45.0 38.6 117
YOUNTS PEAK 8350 -M 15.6 * -M 18.3 *
----- -----
Basin Index (%) 138 118
MADISON-GALLATIN
BLACK BEAR 8170 43.5 37.0 118 45.7 42.6 107
CANYON 7870 12.6 8.2 154 19.3 18.5 104
MADISON PLATEAU 7750 24.9 20.7 120 29.3 29.6 99
WEST YELLOWSTONE 6700 .0 .0 * 18.8 16.4 115
WHISKEY CREEK 6800 15.2 11.9 128 24.7 22.8 108
----- -----
Basin Index (%) 124 106
YELLOWSTONE
BEARTOOTH LAKE 9360 32.8 22.9 143 33.8 22.7 149
BURNT MTN 5880 .9 .0 * 23.9 16.6 144
CANYON 7870 12.6 8.2 154 19.3 18.5 104
COLE CREEK 7850 23.8 16.9 141 20.0 17.2 116
EVENING STAR 9200 41.1 25.1 164 45.3 31.3 145
FISHER CREEK 9100 47.8 33.4 143 45.0 36.1 125
NORTHEAST ENTRANCE 7350 6.8 1.0 680 18.5 14.3 129
PARKER PEAK 9400 37.4 21.6 173 34.1 20.7 165
SYLVAN LAKE 8420 23.5 18.4 128 33.7 25.9 130
THUMB DIVIDE 7980 14.9 9.7 154 22.3 21.5 104
TWO OCEAN PLATEAU 9240 39.3 29.8 132 38.0 30.8 123
WHITE MILL 8700 35.3 24.3 145 33.4 27.0 124
WOLVERINE 7650 7.6 .5 1520* 20.6 14.2 145
----- -----
Basin Index (%) 153 131
WIND RIVER
BURROUGHS CREEK 8750 -M 12.0 * -M 18.5 *
CASTLE CREEK 8400 .7 -M * 13.7 -M *
COLD SPRINGS 9630 2.2 1.6 138 14.1 13.1 108
DEER PARK 9700 15.6 14.7 106 21.8 24.2 90
HOBBS PARK 10100 13.8 15.9 87 15.8 17.4 91
KIRWIN 9550 19.0 10.8 176 20.0 14.5 138
LITTLE WARM 9370 10.2 7.1 144 18.5 15.9 116
OWL CREEK 8975 .0 .5 0* 8.8 8.4 105
SOUTH PASS 9040 11.8 13.1 90 17.0 21.0 81
ST. LAWRENCE ALT 8620 .4 1.5 27 10.7 12.1 88
TOGWOTEE PASS 9580 32.7 25.0 131 36.3 28.1 129
TOWNSEND CREEK 8700 .7 5.2 13 11.6 15.5 75
----- -----
Basin Index (%) 112 103
BIGHORN BASIN
BALD MTN. 9380 30.0 20.4 147 23.5 20.4 115
BEAR TRAP MEADOW 8200 3.1 .2 1550* 12.8 11.3 113
BONE SPRINGS DIV 9350 24.4 16.4 149 20.7 19.0 109
GRAVE SPRINGS 8550 10.4 8.5 122 14.5 13.6 107
KIRWIN 9550 19.0 10.8 176 20.0 14.5 138
MARQUETTE 8760 14.3 -M * 16.3 -M *
MIDDLE POWDER 7760 15.5 11.2 138 16.7 14.8 113
OWL CREEK 8975 .0 .5 0* 8.8 8.4 105
POWDER RIVER PASS 9480 12.8 9.0 142 19.0 15.8 120
SHELL CREEK 9580 19.8 16.4 121 19.7 17.0 116
TIMBER CREEK 7950 1.0 1.9 53 12.1 10.6 114
----- -----
Basin Index (%) 143 115
SHOSHONE RIVER
BLACKWATER 9780 35.2 25.5 138 33.6 24.2 139
EVENING STAR 9200 41.1 25.1 164 45.3 31.3 145
MARQUETTE 8760 14.3 -M * 16.3 -M *
SYLVAN ROAD 7120 1.1 2.9 38 24.9 19.0 131
YOUNTS PEAK 8350 -M 15.6 * -M 18.3 *
----- -----
Basin Index (%) 145 139
POWDER RIVER
BEAR TRAP MEADOW 8200 3.1 .2 1550* 12.8 11.3 113
CLOUD PEAK RESERVOIR 9860 23.2 16.5 141 23.7 17.5 135
GRAVE SPRINGS 8550 10.4 8.5 122 14.5 13.6 107
HANSEN SAWMILL 8360 4.3 1.5 287 15.1 11.4 132
MIDDLE POWDER 7760 15.5 11.2 138 16.7 14.8 113
POWDER RIVER PASS 9480 12.8 9.0 142 19.0 15.8 120
SOLDIER PARK 8720 9.2 -M * 15.3 -M *
----- -----
Basin Index (%) 148 121
TONGUE RIVER
BIG GOOSE 7990 10.8 10.1 107 18.2 15.1 121
BONE SPRINGS DIV 9350 24.4 16.4 149 20.7 19.0 109
BURGESS JUNCTION 7880 16.8 11.4 147 19.6 15.5 126
DOME LAKE 8880 15.6 11.2 139 18.7 17.2 109
LITTLE GOOSE 8870 13.0 -M * 21.3 -M *
SUCKER CREEK 8880 17.3 12.1 143 23.6 18.3 129
TIE CREEK 6870 4.7 2.1 224 18.5 15.1 123
----- -----
Basin Index (%) 142 119
BELLE FOURCHE
COLE CANYON 5910 .7 .0 * 16.8 12.9 130
----- -----
Basin Index (%) * 130
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 19.7 14.9 132
NORTH RAPID CREEK 6130 .0 .0 * 19.1 12.9 148
----- -----
Basin Index (%) * 140
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.2 22.3 126 30.7 26.9 114
BLACKHALL MTN 9820 36.1 -M * -M -M *
COLUMBINE 9160 26.2 15.1 174 -M 29.2 *
DIVIDE PEAK 8880 9.2 16.3 56 25.4 25.0 102
JOE WRIGHT 10120 28.3 22.9 124 37.5 30.8 122
LAPRELE CREEK 8375 2.1 4.6 46 14.7 15.6 94
MED BOW 10500 -M -M * 44.8 -M *
NORTH FRENCH CREEK 10130 38.4 32.8 117 39.5 31.6 125
NEVER SUMMER 10280 27.7 22.0 126 23.7 -M *
OLD BATTLE 10000 34.9 35.8 97 40.2 40.2 100
RAWAH 9020 6.3 3.8 166 20.5 17.8 115
SAGE CREEK BASIN 7850 .0 .2 0* 13.8 16.6 83
SAND LAKE 10050 36.2 31.8 114 37.1 29.9 124
SOUTH BRUSH CREEK 8440 3.3 6.7 49 18.4 18.6 99
TOWER 10500 53.5 51.3 104 56.0 45.9 122
WEBBER SPRINGS 9250 17.8 20.5 87 31.2 30.6 102
WILLOW CREEK PASS 9540 15.1 14.3 106 17.3 16.2 107
ZIRKEL 9340 32.2 20.2 159 43.5 31.8 137
----- -----
Basin Index (%) 112 113
SWEETWATER
DEER PARK 9700 15.6 14.7 106 21.8 24.2 90
LARSEN CREEK 9000 3.0 7.4 41 16.6 -M *
SOUTH PASS 9040 11.8 13.1 90 17.0 21.0 81
----- -----
Basin Index (%) 86 86
LOWER N. PLATTE
CASPER MTN. 7900 13.3 11.9 112 19.0 18.9 101
LAPRELE CREEK 8375 2.1 4.6 46 14.7 15.6 94
RENO HILL 8400 16.3 11.8 138 24.9 19.7 126
WINDY PEAK 7900 1.8 2.0 90 14.5 13.5 107
----- -----
Basin Index (%) 111 108
LARAMIE RIVER
BROOKLYN LAKE 10240 28.7 22.2 129 33.9 25.5 133
CINNABAR PARK 9574 22.3 18.1 123 32.3 27.8 116
CROW CREEK 8330 .1 .0 * 14.3 14.1 101
DEADMAN HILL 10220 26.8 18.9 142 27.1 21.3 127
RAWAH 9020 6.3 3.8 166 20.5 17.8 115
ROACH 9700 16.6 16.6 100 26.9 23.0 117
----- -----
Basin Index (%) 127 120
S. PLATTE
BLACK MOUNTAIN 8920 6.5 -M * -M -M *
CROW CREEK 8330 .1 .0 * 14.3 14.1 101
DEADMAN HILL 10220 26.8 18.9 142 27.1 21.3 127
----- -----
Basin Index (%) 142* 117
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.6 109
DIVIDE PEAK 8880 9.2 16.3 56 25.4 25.0 102
ELK RIVER 8700 9.7 10.1 96 24.9 23.4 106
LITTLE SNAKE RIVER 8915 19.9 21.0 95 37.3 33.7 111
OLD BATTLE 10000 34.9 35.8 97 40.2 40.2 100
SAGE CREEK BASIN 7850 .0 .2 0* 13.8 16.6 83
SANDSTONE RS 8150 -M 3.2 * 19.6 21.3 92
WHISKEY PARK 8950 37.3 27.1 138 43.0 32.3 133
----- -----
Basin Index (%) 100 106
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.3 8.7 130 15.7 15.8 99
BLIND BULL SUM 8650 37.1 22.6 164 24.9 21.9 114
EAST RIM DIVIDE 7930 4.4 6.9 64 16.6 13.3 125
ELKHART PARK G.S. 9400 15.5 10.0 155 18.3 15.6 117
GROS VENTRE SUMMIT 8750 12.7 10.2 125 15.7 15.1 104
GUNSIGHT PASS 9820 19.0 11.7 162 20.8 16.5 126
KENDALL R.S. 7740 12.3 .7 1757* 23.9 16.0 149
LOOMIS PARK 8240 16.2 8.4 193 26.4 19.5 135
NEW FORK LAKE 8340 7.8 4.0 195 14.0 12.6 111
POCKET CREEK 9360 11.0 -M * 13.5 -M *
SNIDER BASIN 8060 6.8 7.9 86 20.6 16.0 129
SPRING CREEK DIVIDE 9000 35.3 24.1 146 34.9 26.8 130
TRIPLE PEAK 8500 27.5 15.4 179 39.4 28.7 137
----- -----
Basin Index (%) 158 125
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 15.2 -M *
BUCK PASTURE 9700 7.7 -M * 19.6 -M *
EF BLACKS FORK GS 9360 .7 -M * 11.6 -M *
HAMS FORK 7840 2.6 .5 520* 15.3 13.5 113
HEWINTA 9519 .8 3.4 24 16.4 16.8 98
HICKERSON PARK 9145 .1 1.8 6 9.6 12.5 77
HOLE-IN-ROCK 9150 .0 1.0 0 11.0 12.0 92
INDIAN CREEK 9425 28.5 21.3 134 28.7 25.6 112
KELLEY R.S. 8180 11.4 9.2 124 22.0 20.7 106
SPIRIT LK 10235 4.1 -M * 15.7 -M *
STEEL CREEK PARK 10200 19.2 17.6 109 18.6 19.8 94
----- -----
Basin Index (%) 114 101
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.2 -M *
BUG LAKE 7950 14.5 12.8 113 22.8 22.3 102
BURTS MILLER RANCH 8000 .1 -M * 7.9 -M *
CHALK CREEK #1 8993 16.5 22.5 73 26.0 29.3 89
HAYDEN FORK 9212 3.7 7.1 52 24.1 24.5 98
KELLEY R.S. 8180 11.4 9.2 124 22.0 20.7 106
LILY LAKE 9156 5.6 7.8 72 17.4 20.2 86
MONTE CRISTO 8960 19.4 23.3 83 28.3 30.1 94
SALT RIVER SUMMIT 7760 7.9 6.2 127 20.9 18.8 111
----- -----
Basin Index (%) 89 97
-----------------------------------------------------------------------------
-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.