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 TUESDAY: MAY 7 , 2013
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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 7.1 6.1 116 22.2 23.4 95
BLACK BEAR 8170 37.4 37.0 101 37.4 42.6 88
BLIND BULL SUM 8650 20.8 22.6 92 16.4 21.9 75
COTTONWOOD CREEK 7670 13.9 13.5 103 26.1 28.3 92
EAST RIM DIVIDE 7930 .1 6.9 1 10.5 13.3 79
GRAND TARGHEE 9260 40.2 46.4 87 31.3 35.7 88
GRANITE CREEK 6770 4.3 6.7 64 16.8 21.9 77
GRASSY LAKE 7265 19.3 27.0 71 34.0 40.1 85
GROS VENTRE SUMMIT 8750 8.6 10.2 84 13.2 15.1 87
GUNSIGHT PASS 9820 11.9 11.7 102 13.9 16.5 84
LEWIS LAKE DIVIDE 7850 23.5 29.4 80 34.1 39.3 87
PHILLIPS BENCH 8200 22.7 23.6 96 27.7 31.4 88
SALT RIVER SUMMIT 7760 4.5 6.2 73 16.0 18.8 85
SNAKE RIVER STATION 6920 1.8 4.0 45 22.7 25.3 90
SPRING CREEK DIVIDE 9000 24.2 24.1 100 25.3 26.8 94
THUMB DIVIDE 7980 7.9 9.7 81 18.9 21.5 88
TOGWOTEE PASS 9580 23.1 25.0 92 25.2 28.1 90
TWO OCEAN PLATEAU 9240 30.2 29.8 101 28.0 30.8 91
WILLOW CREEK 8380 21.7 21.7 100 34.8 38.6 90
YOUNTS PEAK 8350 14.0 15.6 90 13.9 18.3 76
----- -----
Basin wide percent 89 87
MADISON-GALLATIN
BLACK BEAR 8170 37.4 37.0 101 37.4 42.6 88
CANYON 7870 8.6 8.2 105 14.2 18.5 77
MADISON PLATEAU 7750 17.0 20.7 82 25.9 29.6 88
WEST YELLOWSTONE 6700 .0 .0 * 14.2 16.4 87
WHISKEY CREEK 6800 7.8 11.9 66 19.1 22.8 84
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Basin wide percent 91 85
YELLOWSTONE
BEARTOOTH LAKE 9360 19.7 22.9 86 20.6 22.7 91
BURNT MTN 5880 .0 .0 * 12.9 16.6 78
CANYON 7870 8.6 8.2 105 14.2 18.5 77
COLE CREEK 7850 15.0 16.9 89 12.1 17.2 70
EVENING STAR 9200 24.2 25.1 96 31.4 31.3 100
FISHER CREEK 9100 31.3 33.4 94 33.8 36.1 94
NORTHEAST ENTRANCE 7350 .0 1.0 0 12.5 14.3 87
PARKER PEAK 9400 22.0 21.6 102 23.6 20.7 114
SYLVAN LAKE 8420 14.7 18.4 80 25.5 25.9 98
THUMB DIVIDE 7980 7.9 9.7 81 18.9 21.5 88
TWO OCEAN PLATEAU 9240 30.2 29.8 101 28.0 30.8 91
WHITE MILL 8700 24.2 24.3 100 24.4 27.0 90
WOLVERINE 7650 .7 .5 140* 12.2 14.2 86
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Basin wide percent 94 91
WIND RIVER
BURROUGHS CREEK 8750 12.3 12.0 102 12.9 18.5 70
CASTLE CREEK 8400 .0 -M * 9.7 -M *
COLD SPRINGS 9630 1.2 1.6 75 10.3 13.1 79
DEER PARK 9700 12.7 14.7 86 16.6 24.2 69
HOBBS PARK 10100 14.0 15.9 88 14.5 17.4 83
KIRWIN 9550 11.9 10.8 110 14.1 14.5 97
LITTLE WARM 9370 7.8 7.1 110 13.1 15.9 82
OWL CREEK 8975 4.3 .5 860* 8.4 8.4 100
SOUTH PASS 9040 10.7 13.1 82 12.1 21.0 58
ST. LAWRENCE ALT 8620 .4 1.5 27 10.6 12.1 88
TOGWOTEE PASS 9580 23.1 25.0 92 25.2 28.1 90
TOWNSEND CREEK 8700 7.2 5.2 138 12.3 15.5 79
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Basin wide percent 98 80
BIGHORN BASIN
BALD MTN. 9380 17.6 20.4 86 13.1 20.4 64
BEAR TRAP MEADOW 8200 5.7 .2 2850* 11.7 11.3 104
BONE SPRINGS DIV 9350 17.4 16.4 106 14.3 19.0 75
GRAVE SPRINGS 8550 7.4 8.5 87 10.2 13.6 75
KIRWIN 9550 11.9 10.8 110 14.1 14.5 97
MARQUETTE 8760 10.9 -M * 12.8 -M *
MIDDLE POWDER 7760 12.3 11.2 110 15.9 14.8 107
OWL CREEK 8975 4.3 .5 860* 8.4 8.4 100
POWDER RIVER PASS 9480 13.9 9.0 154 17.8 15.8 113
SHELL CREEK 9580 18.2 16.4 111 17.1 17.0 101
TIMBER CREEK 7950 3.9 1.9 205 11.5 10.6 108
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Basin wide percent 118 92
SHOSHONE RIVER
BLACKWATER 9780 27.0 25.5 106 26.6 24.2 110
EVENING STAR 9200 24.2 25.1 96 31.4 31.3 100
MARQUETTE 8760 10.9 -M * 12.8 -M *
SYLVAN ROAD 7120 .0 2.9 0 16.8 19.0 88
YOUNTS PEAK 8350 14.0 15.6 90 13.9 18.3 76
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Basin wide percent 94 96
POWDER RIVER
BEAR TRAP MEADOW 8200 5.7 .2 2850* 11.7 11.3 104
CLOUD PEAK RESERVOIR 9860 16.1 16.5 98 15.7 17.5 90
GRAVE SPRINGS 8550 7.4 8.5 87 10.2 13.6 75
HANSEN SAWMILL 8360 6.6 1.5 440 11.3 11.4 99
MIDDLE POWDER 7760 12.3 11.2 110 15.9 14.8 107
POWDER RIVER PASS 9480 13.9 9.0 154 17.8 15.8 113
SOLDIER PARK 8720 5.7 -M * 10.9 -M *
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Basin wide percent 132 98
TONGUE RIVER
BIG GOOSE 7990 8.7 10.1 86 11.8 15.1 78
BONE SPRINGS DIV 9350 17.4 16.4 106 14.3 19.0 75
BURGESS JUNCTION 7880 12.1 11.4 106 11.8 15.5 76
DOME LAKE 8880 11.6 11.2 104 13.0 17.2 76
LITTLE GOOSE 8870 10.5 -M * 15.4 -M *
SUCKER CREEK 8880 13.7 12.1 113 15.8 18.3 86
TIE CREEK 6870 3.3 2.1 157 13.6 15.1 90
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Basin wide percent 106 80
BELLE FOURCHE
COLE CANYON 5910 2.1 .0 * 10.5 12.9 81
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Basin wide percent * 81
CHEYENNE RIVER BASIN
BLIND PARK 6890 .5 .0 * 14.0 14.9 94
NORTH RAPID CREEK 6130 1.8 .0 * 11.8 12.9 91
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Basin wide percent * 93
UPPER N. PLATTE
ARAPAHO RIDGE 10960 21.6 22.3 97 24.6 26.9 91
BLACKHALL MTN 9820 29.0 -M * 31.5 -M *
COLUMBINE 9160 14.3 15.1 95 27.4 29.3 94
DIVIDE PEAK 8880 11.7 16.3 72 21.8 25.0 87
JOE WRIGHT 10120 22.8 22.9 100 31.9 30.8 104
LAPRELE CREEK 8375 2.4 4.6 52 11.0 15.6 71
MED BOW 10500 -M -M * 33.5 -M *
NORTH FRENCH CREEK 10130 24.9 32.8 76 27.2 31.6 86
NEVER SUMMER 10280 21.8 22.0 99 17.5 -M *
OLD BATTLE 10000 30.1 35.8 84 33.0 40.2 82
RAWAH 9020 9.8 3.8 258 18.7 17.8 105
SAGE CREEK BASIN 7850 -M .2 * 11.5 16.6 69
SAND LAKE 10050 26.1 31.8 82 26.9 29.9 90
SOUTH BRUSH CREEK 8440 4.6 6.7 69 15.2 18.5 82
TOWER 10500 38.3 51.3 75 -M 45.9 *
WEBBER SPRINGS 9250 19.5 20.5 95 26.3 30.6 86
WILLOW CREEK PASS 9540 18.8 14.3 131 19.6 16.2 121
ZIRKEL 9340 22.4 20.2 111 32.7 31.8 103
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Basin wide percent 90 91
SWEETWATER
DEER PARK 9700 12.7 14.7 86 16.6 24.2 69
LARSEN CREEK 9000 .0 -M * 11.6 -M *
SOUTH PASS 9040 10.7 13.1 82 12.1 21.0 58
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Basin wide percent 84 63
LOWER N. PLATTE
CASPER MTN. 7900 11.2 11.9 94 11.5 18.9 61
LAPRELE CREEK 8375 2.4 4.6 52 11.0 15.6 71
RENO HILL 8400 10.7 11.8 91 15.8 19.7 80
WINDY PEAK 7900 2.0 2.0 100 10.4 13.5 77
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Basin wide percent 87 72
LARAMIE RIVER
BROOKLYN LAKE 10240 19.6 22.2 88 21.9 25.5 86
CINNABAR PARK 9574 15.3 18.1 85 22.9 27.9 82
CROW CREEK 8330 .5 .0 * 12.5 14.1 89
DEADMAN HILL 10220 18.4 18.9 97 19.6 21.3 92
RAWAH 9020 9.8 3.8 258 18.7 17.8 105
ROACH 9700 16.6 16.6 100 21.0 23.0 91
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Basin wide percent 101 90
S. PLATTE
BLACK MOUNTAIN 8920 10.1 -M * 16.1 -M *
CROW CREEK 8330 .5 .0 * 12.5 14.1 89
DEADMAN HILL 10220 18.4 18.9 97 19.6 21.3 92
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Basin wide percent 100* 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .0 * 13.4 17.5 77
DIVIDE PEAK 8880 11.7 16.3 72 21.8 25.0 87
ELK RIVER 8700 9.3 10.1 92 20.0 23.4 85
LITTLE SNAKE RIVER 8915 18.2 21.0 87 29.7 33.7 88
OLD BATTLE 10000 30.1 35.8 84 33.0 40.2 82
SAGE CREEK BASIN 7850 -M .2 * 11.5 16.6 69
SANDSTONE RS 8150 1.7 3.2 53 14.5 21.3 68
WHISKEY PARK 8950 23.1 27.1 85 30.3 32.3 94
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Basin wide percent 83 83
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.5 8.7 98 12.1 15.8 77
BLIND BULL SUM 8650 20.8 22.6 92 16.4 21.9 75
EAST RIM DIVIDE 7930 .1 6.9 1 10.5 13.3 79
ELKHART PARK G.S. 9400 8.8 10.0 88 11.7 15.6 75
GROS VENTRE SUMMIT 8750 8.6 10.2 84 13.2 15.1 87
GUNSIGHT PASS 9820 11.9 11.7 102 13.9 16.5 84
KENDALL R.S. 7740 .0 .7 0* 11.9 15.9 75
LOOMIS PARK 8240 5.6 8.4 67 15.6 19.5 80
NEW FORK LAKE 8340 .6 4.0 15 8.2 12.6 65
POCKET CREEK 9360 8.3 -M * 11.9 -M *
SNIDER BASIN 8060 .0 7.9 0 15.2 16.0 95
SPRING CREEK DIVIDE 9000 24.2 24.1 100 25.3 26.8 94
TRIPLE PEAK 8500 16.2 15.4 105 26.3 28.7 92
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Basin wide percent 81 83
LOWER GREEN RIVER
BLACKS FORK JCT 8870 4.7 -M * 12.8 -M *
BUCK PASTURE 9700 11.1 -M * 18.2 -M *
EF BLACKS FORK GS 9308 9.5 -M * 13.2 -M *
HAMS FORK 7840 .0 .5 0* 11.5 13.5 85
HEWINTA 9519 7.3 3.4 215 15.4 16.8 92
HICKERSON PARK 9145 4.4 1.8 244 12.4 12.5 99
HOLE-IN-ROCK 9150 6.4 1.0 640 13.4 12.0 112
INDIAN CREEK 9425 20.2 21.3 95 21.4 25.6 84
KELLEY R.S. 8180 7.0 9.2 76 15.7 20.7 76
SPIRIT LK 10223 10.7 -M * 17.7 -M *
STEEL CREEK PARK 10200 15.8 17.6 90 18.6 19.8 94
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Basin wide percent 111 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 .1 -M * 13.4 -M *
BUG LAKE 7950 8.5 12.8 66 18.2 22.3 82
BURTS MILLER RANCH 8000 .2 -M * 8.8 -M *
CHALK CREEK #1 8993 18.1 22.5 80 24.4 29.3 83
HAYDEN FORK 9212 5.0 7.1 70 19.8 24.5 81
KELLEY R.S. 8180 7.0 9.2 76 15.7 20.7 76
LILY LAKE 9156 9.6 7.8 123 15.3 20.2 76
MONTE CRISTO 8960 17.5 23.3 75 24.9 30.1 83
SALT RIVER SUMMIT 7760 4.5 6.2 73 16.0 18.8 85
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Basin wide percent 79 81
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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 wide percent 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.
Reference period for comparison of conditions is 1981-2010.
Provisional data, subject to revision.
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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.
