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 MONDAY: APRIL 2 , 2012
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 18.1 18.1 100 24.2 21.8 111
BLACK BEAR 8170 41.5 39.8 104 41.8 41.1 102
BLIND BULL SUM 8650 22.7 28.4 80 17.3 22.6 77
COTTONWOOD CREEK 7670 18.1 24.2 75 24.4 27.9 87
EAST RIM DIVIDE 7930 8.9 13.4 66 11.3 12.2 93
GRAND TARGHEE 9260 37.7 -M * 29.9 -M *
GRANITE CREEK 6770 13.3 18.6 72 16.6 20.2 82
GRASSY LAKE 7265 32.2 36.3 89 38.5 36.6 105
GROS VENTRE SUMMIT 8750 8.9 14.4 62 10.4 13.1 79
GUNSIGHT PASS 9820 12.5 -M * 14.2 -M *
LEWIS LAKE DIVIDE 7850 31.2 36.0 87 35.3 37.3 95
PHILLIPS BENCH 8200 24.2 29.4 82 25.7 29.5 87
SALT RIVER SUMMIT 7760 9.3 14.7 63 11.2 19.1 59
SNAKE RIVER STATION 6920 15.6 19.2 81 25.0 22.6 111
SPRING CREEK DIVIDE 9000 22.9 27.1 85 22.4 26.9 83
THUMB DIVIDE 7980 16.9 19.3 88 18.6 19.2 97
TOGWOTEE PASS 9580 22.0 25.3 87 24.1 25.0 96
TWO OCEAN PLATEAU 9240 33.4 28.6 117 28.0 28.1 100
WILLOW CREEK 8380 24.4 30.8 79 31.9 32.7 98
YOUNTS PEAK 8350 15.9 17.4 91 15.8 16.4 96
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Basin wide percent of average 86 93
MADISON-GALLATIN
BLACK BEAR 8170 41.5 39.8 104 41.8 41.1 102
CANYON 7870 12.3 13.9 88 14.9 15.7 95
MADISON PLATEAU 7750 25.6 25.5 100 30.8 27.2 113
WEST YELLOWSTONE 6700 9.4 12.8 73 17.4 13.2 132
WHISKEY CREEK 6800 16.1 17.5 92 23.0 21.3 108
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Basin wide percent of average 96 108
YELLOWSTONE
BEARTOOTH LAKE 9360 24.8 23.7 105 24.1 20.4 118
BURNT MTN 5880 .0 6.2 0 11.4 15.6 73
CANYON 7870 12.3 13.9 88 14.9 15.7 95
COLE CREEK 7850 13.8 16.6 83 11.5 16.9 68
EVENING STAR 9200 29.3 30.2 97 32.1 25.6 125
FISHER CREEK 9100 36.6 35.5 103 34.7 37.0 94
NORTHEAST ENTRANCE 7350 7.8 11.3 69 12.9 12.9 100
PARKER PEAK 9400 23.9 22.0 109 23.1 16.5 140
SYLVAN LAKE 8420 18.1 22.9 79 24.8 21.2 117
THUMB DIVIDE 7980 16.9 19.3 88 18.6 19.2 97
TWO OCEAN PLATEAU 9240 33.4 28.6 117 28.0 28.1 100
WHITE MILL 8700 23.4 24.7 95 23.9 27.4 87
WOLVERINE 7650 8.3 11.7 71 13.1 13.0 101
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Basin wide percent of average 93 101
WIND RIVER
BURROUGHS CREEK 8750 13.6 14.8 92 14.4 16.5 87
CASTLE CREEK 8400 5.4 -M * 8.7 -M *
COLD SPRINGS 9630 5.0 9.0 56 9.4 10.8 87
DEER PARK 9700 10.6 17.3 61 17.2 22.2 77
HOBBS PARK 10100 13.2 15.3 86 13.0 13.0 100
KIRWIN 9550 11.8 11.5 103 14.1 11.4 124
LITTLE WARM 9370 8.0 12.1 66 11.5 13.6 85
OWL CREEK 8975 .9 5.6 16 5.7 6.0 95
SOUTH PASS 9040 12.7 16.9 75 13.3 18.7 71
ST. LAWRENCE ALT 8620 .0 7.4 0 7.5 9.0 83
TOGWOTEE PASS 9580 22.0 25.3 87 24.1 25.0 96
TOWNSEND CREEK 8700 6.2 9.0 69 11.1 11.8 94
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Basin wide percent of average 72 89
BIGHORN BASIN
BALD MTN. 9380 20.6 20.0 103 15.4 17.6 88
BEAR TRAP MEADOW 8200 4.7 5.2 90 8.9 8.4 106
BONE SPRINGS DIV 9350 19.3 16.5 117 15.4 14.8 104
GRAVE SPRINGS 8550 7.1 9.5 75 10.2 9.8 104
KIRWIN 9550 11.8 11.5 103 14.1 11.4 124
MARQUETTE 8760 7.6 -M * 11.7 9.9 118
MIDDLE POWDER 7760 9.5 11.9 80 10.6 12.5 85
OWL CREEK 8975 .9 5.6 16 5.7 6.0 95
POWDER RIVER PASS 9480 10.4 11.0 95 15.4 12.5 123
SHELL CREEK 9580 18.0 14.9 121 15.8 13.5 117
TIMBER CREEK 7950 .1 5.8 2 8.8 7.5 117
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Basin wide percent of average 92 107
SHOSHONE RIVER
BLACKWATER 9780 24.5 24.9 98 24.3 20.8 117
EVENING STAR 9200 29.3 30.2 97 32.1 25.6 125
MARQUETTE 8760 7.6 -M * 11.7 9.9 118
SYLVAN ROAD 7120 8.4 12.9 65 17.8 17.9 99
YOUNTS PEAK 8350 15.9 17.4 91 15.8 16.4 96
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Basin wide percent of average 91 112
POWDER RIVER
BEAR TRAP MEADOW 8200 4.7 5.2 90 8.9 8.4 106
CLOUD PEAK RESERVOIR 9860 13.6 13.6 100 15.1 13.0 116
GRAVE SPRINGS 8550 7.1 9.5 75 10.2 9.8 104
HANSEN SAWMILL 8360 .4 6.5 6 8.4 8.3 101
MIDDLE POWDER 7760 9.5 11.9 80 10.6 12.5 85
POWDER RIVER PASS 9480 10.4 11.0 95 15.4 12.5 123
SOLDIER PARK 8720 8.5 -M * 9.8 -M *
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Basin wide percent of average 79 106
TONGUE RIVER
BIG GOOSE 7990 7.8 10.8 72 13.7 8.6 159
BONE SPRINGS DIV 9350 19.3 16.5 117 15.4 14.8 104
BURGESS JUNCTION 7880 11.5 11.8 97 14.3 12.3 116
DOME LAKE 8880 12.1 12.7 95 14.6 13.3 110
LITTLE GOOSE 8870 7.6 -M * 16.0 -M *
SUCKER CREEK 8880 11.5 11.9 97 14.8 13.7 108
TIE CREEK 6870 .2 6.1 3 13.6 10.0 136
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Basin wide percent of average 89 119
BELLE FOURCHE
COLE CANYON 5910 .0 6.9 0 8.0 6.7 119
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Basin wide percent of average 0 119
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 8.6 0 10.3 11.2 92
NORTH RAPID CREEK 6130 .0 8.4 0 8.0 8.6 93
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Basin wide percent of average 0 92
UPPER N. PLATTE
ARAPAHO RIDGE 10960 14.6 23.0 63 16.5 27.0 61
BLACKHALL MTN 9820 20.6 -M * 23.1 -M *
COLUMBINE 9160 10.7 25.1 43 19.4 25.5 76
DIVIDE PEAK 8880 9.2 20.1 46 18.5 20.9 89
JOE WRIGHT 10120 10.9 21.6 50 18.4 25.0 74
LAPRELE CREEK 8375 5.4 11.0 49 11.5 12.7 91
NORTH FRENCH CREEK 10130 17.3 29.8 58 19.2 24.9 77
NEVER SUMMER 10280 11.1 20.5 54 10.8 23.8 45
OLD BATTLE 10000 22.2 32.6 68 26.7 34.9 77
RAWAH 9020 2.2 15.2 14 10.8 16.5 65
SAGE CREEK BASIN 7850 2.3 11.7 20 10.0 12.1 83
SAND LAKE 10050 22.7 32.9 69 22.7 24.4 93
SOUTH BRUSH CREEK 8440 -M 13.2 * 11.6 16.6 70
TOWER 10500 27.4 46.1 59 30.5 38.8 79
WEBBER SPRINGS 9250 13.5 26.4 51 20.8 27.0 77
WILLOW CREEK PASS 9540 -M 12.2 * 9.2 13.0 71
ZIRKEL 9340 -M 25.9 * 24.2 26.2 92
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Basin wide percent of average 54 76
SWEETWATER
DEER PARK 9700 10.6 17.3 61 17.2 22.2 77
LARSEN CREEK 9000 9.0 -M * 13.8 -M *
SOUTH PASS 9040 12.7 16.9 75 13.3 18.7 71
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Basin wide percent of average 68 75
LOWER N. PLATTE
CASPER MTN. 7900 15.0 14.7 102 17.5 14.6 120
LAPRELE CREEK 8375 5.4 11.0 49 11.5 12.7 91
RENO HILL 8400 13.2 14.4 92 17.1 15.1 113
WINDY PEAK 7900 3.6 8.2 44 8.5 10.6 80
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Basin wide percent of average 77 103
LARAMIE RIVER
BROOKLYN LAKE 10240 15.4 24.1 64 18.6 22.3 83
CINNABAR PARK 9574 12.1 17.9 68 19.1 20.2 95
CROW CREEK 8330 1.5 9.0 17 10.0 10.1 99
DEADMAN HILL 10220 15.2 16.6 92 14.9 17.1 87
RAWAH 9020 2.2 15.2 14 10.8 16.5 65
ROACH 9700 11.2 17.3 65 15.7 18.8 84
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Basin wide percent of average 58 85
S. PLATTE
BLACK MOUNTAIN 8920 8.6 -M * 12.1 -M *
CROW CREEK 8330 1.5 9.0 17 10.0 10.1 99
DEADMAN HILL 10220 15.2 16.6 92 14.9 17.1 87
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Basin wide percent of average 65 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.9 * 11.7 16.0 73
DIVIDE PEAK 8880 9.2 20.1 46 18.5 20.9 89
ELK RIVER 8700 -M 19.7 * 15.3 19.8 77
LITTLE SNAKE RIVER 8915 13.1 -M * 23.9 -M *
OLD BATTLE 10000 22.2 32.6 68 26.7 34.9 77
SAGE CREEK BASIN 7850 2.3 11.7 20 10.0 12.1 83
SANDSTONE RS 8150 -M 14.7 * 11.8 18.9 62
WHISKEY PARK 8950 16.2 30.5 53 23.7 29.0 82
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Basin wide percent of average 53 78
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.3 14.7 90 13.7 13.5 101
BLIND BULL SUM 8650 22.7 28.4 80 17.3 22.6 77
EAST RIM DIVIDE 7930 8.9 13.4 66 11.3 12.2 93
ELKHART PARK G.S. 9400 13.9 13.6 102 15.1 13.5 112
GROS VENTRE SUMMIT 8750 8.9 14.4 62 10.4 13.1 79
GUNSIGHT PASS 9820 12.5 -M * 14.2 -M *
KENDALL R.S. 7740 12.4 14.5 86 14.8 14.8 100
LOOMIS PARK 8240 12.4 17.5 71 16.5 17.7 93
NEW FORK LAKE 8340 9.8 11.4 86 10.6 11.5 92
POCKET CREEK 9360 10.1 -M * 12.3 -M *
SNIDER BASIN 8060 11.4 14.8 77 12.9 16.4 79
SPRING CREEK DIVIDE 9000 22.9 27.1 85 22.4 26.9 83
TRIPLE PEAK 8500 20.2 25.3 80 25.0 25.2 99
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Basin wide percent of average 80 91
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.2 -M * 11.1 -M *
BUCK PASTURE 9700 .1 -M * 4.1 -M *
EF BLACKS FORK GS 9308 5.6 -M * 9.5 -M *
HAMS FORK 7840 6.8 11.9 57 9.7 12.4 78
HEWINTA 9519 6.4 12.2 52 13.1 14.8 89
HICKERSON PARK 9145 4.4 7.8 56 12.4 8.0 155
HOLE-IN-ROCK 9150 5.2 7.2 72 12.5 7.6 164
INDIAN CREEK 9425 19.7 28.4 69 17.7 25.9 68
KELLEY R.S. 8180 12.6 17.2 73 15.0 20.7 72
SPIRIT LK 10223 10.3 -M * 17.9 -M *
STEEL CREEK PARK 10200 11.0 16.0 69 14.9 16.5 90
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Basin wide percent of average 66 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 1.3 -M * 10.5 -M *
BUG LAKE 7950 14.2 21.3 67 15.7 19.5 81
BURTS MILLER RANCH 8000 .8 -M * 9.8 -M *
CHALK CREEK #1 8993 14.6 25.0 58 19.0 25.5 75
HAYDEN FORK 9212 7.6 16.7 46 17.9 21.3 84
KELLEY R.S. 8180 12.6 17.2 73 15.0 20.7 72
LILY LAKE 9156 7.9 13.7 58 12.5 17.7 71
MONTE CRISTO 8960 16.6 30.2 55 18.8 25.9 73
SALT RIVER SUMMIT 7760 9.3 14.7 63 11.2 19.1 59
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Basin wide percent of average 60 74
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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 average conditions is 1971-2000.
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.