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 SUNDAY: APRIL 25 , 2010
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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 4.6 14.6 32 14.1 23.8 59
COTTONWOOD CREEK 7670 14.6 21.9 67 23.5 30.9 76
GRAND TARGHEE 9260 40.2 -M * 30.9 -M *
GRANITE CREEK 6770 6.1 14.9 41 13.3 21.8 61
GRASSY LAKE 7265 19.9 35.6 56 27.7 39.9 69
GROS VENTRE SUMMIT 8750 7.9 14.2 56 9.8 14.7 67
GUNSIGHT PASS 9820 9.4 -M * 12.4 -M *
LEWIS LAKE DIVIDE 7850 16.7 36.0 46 23.0 40.7 57
PHILLIPS BENCH 8200 17.1 30.5 56 21.8 32.2 68
SALT RIVER SUMMIT 7760 8.0 12.7 63 13.7 21.0 65
SNAKE RIVER STATION 6920 2.6 14.9 17 17.7 24.9 71
SPRING CREEK DIVIDE 9000 19.2 28.9 66 19.6 29.5 66
THUMB DIVIDE 7980 7.3 16.9 43 14.2 21.3 67
TOGWOTEE PASS 9580 18.9 27.5 69 20.5 28.0 73
TWO OCEAN PLATEAU 9240 22.7 31.5 72 19.3 31.1 62
WILLOW CREEK 8380 19.0 31.7 60 29.3 36.4 80
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Basin wide percent of average 56 68
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.6 25.6 57 14.4 22.7 63
BLACK BEAR 8170 25.5 40.6 63 27.2 44.8 61
CANYON 7870 6.4 12.5 51 11.5 17.2 67
FISHER CREEK 9100 21.8 37.6 58 23.9 40.7 59
MADISON PLATEAU 7750 14.6 25.4 57 20.7 29.8 69
NORTHEAST ENTRANCE 7350 .1 8.7 1 9.1 14.3 64
PARKER PEAK 9400 17.0 24.0 71 13.7 18.7 73
SYLVAN LAKE 8420 11.7 23.9 49 18.7 23.8 79
THUMB DIVIDE 7980 7.3 16.9 43 14.2 21.3 67
TWO OCEAN PLATEAU 9240 22.7 31.5 72 19.3 31.1 62
WHISKEY CREEK 6800 8.8 16.7 53 12.7 23.5 54
WHITE MILL 8700 15.3 26.3 58 16.4 30.3 54
WOLVERINE 7650 .4 8.8 5 7.9 14.6 54
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Basin wide percent of average 56 63
WIND RIVER
BURROUGHS CREEK 8750 -M 14.5 * -M 18.6 *
COLD SPRINGS 9630 6.6 5.2 127 12.4 13.1 95
DEER PARK 9700 18.0 19.2 94 22.5 25.7 88
HOBBS PARK 10100 19.3 17.5 110 20.4 15.9 128
LITTLE WARM 9370 7.6 11.8 64 10.7 15.9 67
SOUTH PASS 9040 15.5 17.8 87 20.1 21.7 93
ST. LAWRENCE ALT 8620 7.0 6.4 109 13.6 11.2 121
TOGWOTEE PASS 9580 18.9 27.5 69 20.5 28.0 73
TOWNSEND CREEK 8700 11.7 9.6 122 18.1 14.6 124
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Basin wide percent of average 91 95
BIGHORN BASIN
BALD MTN. 9380 13.7 22.8 60 12.0 20.3 59
BEAR TRAP MEADOW 8200 4.2 3.2 131 9.6 10.2 94
BLACKWATER 9780 18.2 27.6 66 17.5 23.8 74
BONE SPRINGS DIV 9350 9.8 17.8 55 11.1 17.4 64
EVENING STAR 9200 17.3 32.5 53 21.9 28.9 76
GRAVE SPRINGS 8550 7.9 11.0 72 11.5 12.4 93
KIRWIN 9550 10.2 12.6 81 11.7 13.5 87
MARQUETTE 8760 7.5 10.7 70 11.0 12.7 87
MIDDLE POWDER 7760 9.7 14.2 68 9.9 14.9 66
OWL CREEK 8975 2.0 4.2 48 6.9 7.6 91
POWDER RIVER PASS 9480 6.8 11.4 60 11.8 14.9 79
SHELL CREEK 9580 11.4 16.4 70 11.0 15.9 69
SYLVAN LAKE 8420 11.7 23.9 49 18.7 23.8 79
SYLVAN ROAD 7120 .1 9.7 1 12.9 19.8 65
TIMBER CREEK 7950 2.9 5.0 58 7.9 9.6 82
YOUNTS PEAK 8350 10.5 18.1 58 10.6 18.2 58
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Basin wide percent of average 60 74
SHOSHONE RIVER
BLACKWATER 9780 18.2 27.6 66 17.5 23.8 74
EVENING STAR 9200 17.3 32.5 53 21.9 28.9 76
KIRWIN 9550 10.2 12.6 81 11.7 13.5 87
MARQUETTE 8760 7.5 10.7 70 11.0 12.7 87
SYLVAN LAKE 8420 11.7 23.9 49 18.7 23.8 79
SYLVAN ROAD 7120 .1 9.7 1 12.9 19.8 65
YOUNTS PEAK 8350 10.5 18.1 58 10.6 18.2 58
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Basin wide percent of average 56 74
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.2 3.2 131 9.6 10.2 94
BIG GOOSE 7990 8.0 12.4 65 11.9 12.0 99
BONE SPRINGS DIV 9350 9.8 17.8 55 11.1 17.4 64
BURGESS JUNCTION 7880 10.0 13.2 76 11.7 14.6 80
CLOUD PEAK RESERVOIR 9860 12.4 15.9 78 12.5 16.0 78
DOME LAKE 8880 7.5 13.5 56 12.7 15.9 80
GRAVE SPRINGS 8550 7.9 11.0 72 11.5 12.4 93
HANSEN SAWMILL 8360 3.1 5.2 60 8.7 10.2 85
MIDDLE POWDER 7760 9.7 14.2 68 9.9 14.9 66
POWDER RIVER PASS 9480 6.8 11.4 60 11.8 14.9 79
SUCKER CREEK 8880 11.0 13.3 83 14.7 16.4 90
TIE CREEK 6870 .1 5.2 2 11.0 12.5 88
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Basin wide percent of average 66 82
BELLE FOURCHE
BLIND PARK 6890 .2 5.9 3 12.9 13.3 97
COLE CANYON 5910 .0 6.3 0 11.3 8.6 131
NORTH RAPID CREEK 6130 .2 6.8 3 12.4 10.5 118
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Basin wide percent of average 2 113
UPPER N. PLATTE RIVER
COLUMBINE 9160 16.3 23.1 71 24.3 28.3 86
DIVIDE PEAK 8880 20.1 20.6 98 26.4 23.4 113
ELK RIVER 8700 14.3 17.7 81 22.3 22.2 100
JOE WRIGHT 10120 21.6 24.7 87 25.4 28.8 88
NORTH FRENCH CREEK 10130 37.9 34.0 111 38.1 28.4 134
OLD BATTLE 10000 36.5 36.0 101 39.9 38.7 103
SAGE CREEK BASIN 7850 11.8 11.9 99 14.4 13.6 106
SOUTH BRUSH CREEK 8440 11.3 12.4 91 21.2 19.2 110
TOWER 10500 37.1 51.4 72 36.1 43.6 83
WEBBER SPRINGS 9250 22.5 26.0 87 31.0 30.2 103
WILLOW CREEK PASS 9540 11.0 14.2 77 14.0 15.0 93
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Basin wide percent of average 88 101
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.9 27.9 82 25.2 25.8 98
CASPER MTN. 7900 15.5 17.6 88 17.3 18.3 95
DEADMAN HILL 10220 26.2 19.3 136 23.0 20.0 115
DEER PARK 9700 18.0 19.2 94 22.5 25.7 88
LAPRELE CREEK 8375 7.7 8.7 89 15.9 15.4 103
RENO HILL 8400 16.9 15.8 107 22.3 18.9 118
ROACH 9700 19.9 18.6 107 25.2 21.5 117
SAND LAKE 10050 33.8 36.3 93 34.7 28.1 123
SOUTH PASS 9040 15.5 17.8 87 20.1 21.7 93
WINDY PEAK 7900 9.1 6.5 140 15.1 12.7 119
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Basin wide percent of average 99 106
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.4 6.5 68 16.5 18.0 92
DIVIDE PEAK 8880 20.1 20.6 98 26.4 23.4 113
OLD BATTLE 10000 36.5 36.0 101 39.9 38.7 103
SANDSTONE RS 8150 10.0 11.6 86 19.2 21.1 91
WHISKEY PARK 8950 25.0 30.7 81 33.4 32.6 102
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Basin wide percent of average 91 101
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.5 14.7 65 11.4 15.3 75
BLIND BULL SUM 8650 18.0 28.6 63 13.8 24.6 56
EAST RIM DIVIDE 7930 2.1 13.9 15 8.0 13.4 60
ELKHART PARK G.S. 9400 7.8 13.7 57 10.3 15.3 67
GROS VENTRE SUMMIT 8750 7.9 14.2 56 9.8 14.7 67
GUNSIGHT PASS 9820 9.4 -M * 12.4 -M *
KENDALL R.S. 7740 1.9 12.0 16 9.3 16.1 58
LOOMIS PARK 8240 5.5 15.8 35 11.5 19.3 60
NEW FORK LAKE 8340 3.0 10.1 30 7.3 12.9 57
POCKET CREEK 9360 8.3 -M * 13.2 -M *
SNIDER BASIN 8060 7.7 14.1 55 12.1 18.1 67
SPRING CREEK DIVIDE 9000 19.2 28.9 66 19.6 29.5 66
TRIPLE PEAK 8500 14.7 25.3 58 21.3 27.8 77
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Basin wide percent of average 51 65
LOWER GREEN RIVER
HAMS FORK 7840 4.2 7.9 53 10.9 14.1 77
HEWINTA 9519 6.6 11.0 60 13.8 17.1 81
HICKERSON PARK 9145 5.8 7.2 81 12.7 9.6 132
HOLE-IN-ROCK 9150 3.8 6.1 62 11.9 9.2 129
INDIAN CREEK 9425 17.8 29.4 61 18.7 28.6 65
KELLEY R.S. 8180 9.2 15.9 58 15.3 22.9 67
STEEL CREEK PARK 10200 16.2 18.1 90 17.5 19.4 90
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Basin wide percent of average 67 83
UPPER BEAR RIVER
BUG LAKE 7950 11.2 20.3 55 16.1 21.7 74
HAYDEN FORK 9212 7.6 15.0 51 19.4 24.2 80
KELLEY R.S. 8180 9.2 15.9 58 15.3 22.9 67
LILY LAKE 9156 9.9 13.0 76 15.8 20.4 77
MONTE CRISTO 8960 16.8 29.8 56 20.2 29.2 69
SALT RIVER SUMMIT 7760 8.0 12.7 63 13.7 21.0 65
TRIAL LAKE 9992 17.5 26.6 66 16.9 28.4 60
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Basin wide percent of average 60 70
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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.