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 7 , 2005
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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 .5 9.8 5 16.8 24.9 67
COTTONWOOD CREEK 7600 11.3 17.3 65 26.1 32.7 80
GRANITE CREEK 6770 4.0 10.7 37 17.7 22.9 77
GRASSY LAKE 7265 15.2 30.4 50 27.6 41.7 66
GROS VENTRE SUMMIT 8750 10.1 11.8 86 13.0 15.8 82
LEWIS LAKE DIVIDE 7850 16.7 32.2 52 24.9 42.3 59
PHILLIPS BENCH 8200 19.5 27.1 72 25.0 33.8 74
SALT RIVER SUMMIT 7600 7.8 8.2 95 19.6 22.1 89
SNAKE RIVER STATION 6920 .2 9.4 2 15.4 26.1 59
SPRING CREEK DIVIDE 9000 25.7 26.9 96 26.0 30.8 84
THUMB DIVIDE 7980 5.5 12.7 43 14.8 22.5 66
TOGWOTEE PASS 9580 17.9 27.7 65 19.6 29.7 66
TWO OCEAN PLATEAU 9240 25.8 31.3 82 21.1 32.9 64
WILLOW CREEK 8450 19.3 28.3 68 34.9 38.6 90
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Basin wide percent of average 63 73
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 17.4 25.7 68 16.3 24.2 67
BLACK BEAR 8170 33.5 38.4 87 34.5 46.7 74
CANYON 8090 4.6 9.5 48 12.0 18.2 66
FISHER CREEK 9100 23.8 37.3 64 28.4 42.8 66
MADISON PLATEAU 7750 17.1 22.2 77 23.2 31.2 74
NORTHEAST ENTRANCE 7350 .0 5.5 0 9.0 15.3 59
PARKER PEAK 9400 16.0 24.3 66 15.3 20.2 76
SYLVAN LAKE 8420 9.5 22.3 43 19.2 25.5 75
THUMB DIVIDE 7980 5.5 12.7 43 14.8 22.5 66
TWO OCEAN PLATEAU 9240 25.8 31.3 82 21.1 32.9 64
WHISKEY CREEK 6800 9.8 12.9 76 18.3 24.8 74
WHITE MILL 8700 18.3 25.7 71 18.1 32.0 57
WOLVERINE 7650 .2 5.5 4 9.1 15.8 58
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Basin wide percent of average 66 68
WIND RIVER
BURROUGHS CREEK 8750 11.2 12.2 92 13.2 19.9 66
COLD SPRINGS 9630 2.6 4.2 62 10.7 14.5 74
DEER PARK 9700 25.7 18.0 143 29.3 27.8 105
HOBBS PARK 10100 18.2 17.4 105 18.1 17.7 102
LITTLE WARM 9370 6.5 9.7 67 11.9 17.4 68
SOUTH PASS 9040 20.0 16.3 123 24.3 23.3 104
ST. LAWRENCE ALT 8620 4.7 5.1 92 11.6 12.7 91
TOGWOTEE PASS 9580 17.9 27.7 65 19.6 29.7 66
TOWNSEND CREEK 8700 9.3 7.6 122 17.3 16.1 107
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Basin wide percent of average 98 87
BIGHORN BASIN
BALD MTN. 9380 16.8 23.3 72 17.9 22.1 81
BEAR TRAP MEADOW 8200 .2 1.7 12 9.6 11.5 83
BLACKWATER 9780 16.6 28.8 58 16.9 25.5 66
BONE SPRINGS DIV 9350 14.0 17.4 80 17.2 19.1 90
EVENING STAR 9200 17.2 33.0 52 22.4 30.8 73
GRAVE SPRINGS 8550 4.6 9.7 47 10.1 13.7 74
KIRWIN 9550 9.0 12.1 74 11.4 14.8 77
MARQUETTE 8760 5.5 10.3 53 9.9 14.5 68
MIDDLE POWDER 7760 8.2 12.9 64 9.6 16.4 59
OWL CREEK 8975 1.3 3.3 39 8.2 8.8 93
POWDER RIVER PASS 9480 6.3 9.6 66 14.7 16.5 89
SHELL CREEK 9580 15.0 16.6 90 15.1 17.5 86
SYLVAN LAKE 8420 9.5 22.3 43 19.2 25.5 75
SYLVAN ROAD 7120 .2 5.8 3 12.2 21.0 58
TIMBER CREEK 7950 1.3 3.7 35 6.9 11.3 61
YOUNTS PEAK 8350 10.9 16.9 64 13.4 19.4 69
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Basin wide percent of average 60 74
SHOSHONE RIVER
BLACKWATER 9780 16.6 28.8 58 16.9 25.5 66
EVENING STAR 9200 17.2 33.0 52 22.4 30.8 73
KIRWIN 9550 9.0 12.1 74 11.4 14.8 77
MARQUETTE 8760 5.5 10.3 53 9.9 14.5 68
SYLVAN LAKE 8420 9.5 22.3 43 19.2 25.5 75
SYLVAN ROAD 7120 .2 5.8 3 12.2 21.0 58
YOUNTS PEAK 8350 10.9 16.9 64 13.4 19.4 69
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Basin wide percent of average 53 70
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 1.7 12 9.6 11.5 83
BIG GOOSE 7990 7.3 10.5 70 12.8 13.6 94
BONE SPRINGS DIV 9350 14.0 17.4 80 17.2 19.1 90
BURGESS JUNCTION 7880 9.5 12.0 79 13.3 16.0 83
CLOUD PEAK RESERVOIR 9860 14.5 15.6 93 15.7 18.0 87
DOME LAKE 8880 6.8 12.2 56 14.8 17.5 85
GRAVE SPRINGS 8550 4.6 9.7 47 10.1 13.7 74
HANSEN SAWMILL 8360 .5 3.7 14 11.2 11.6 97
MIDDLE POWDER 7760 8.2 12.9 64 9.6 16.4 59
POWDER RIVER PASS 9480 6.3 9.6 66 14.7 16.5 89
SUCKER CREEK 8880 9.6 11.9 81 16.8 18.2 92
TIE CREEK 6870 .1 2.8 4 11.2 14.2 79
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Basin wide percent of average 68 84
BELLE FOURCHE
BLIND PARK 6890 .0 2.3 0 10.4 14.9 70
COLE CANYON 5910 .0 4.3 0 9.4 -M *
NORTH RAPID CREEK 6130 .2 2.4 8 8.5 11.9 71
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Basin wide percent of average 2 71
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.7 17.6 49 -M 29.8 *
DIVIDE PEAK 8860 16.6 16.5 101 26.4 24.9 106
ELK RIVER 8700 11.6 11.8 98 24.4 23.6 103
JOE WRIGHT 10120 22.0 24.5 90 25.5 31.0 82
NORTH FRENCH CREEK 10130 26.7 33.9 79 27.6 30.6 90
OLD BATTLE 9920 38.8 36.3 107 37.7 40.7 93
SAGE CREEK BASIN 7850 .4 9.6 4 17.9 14.4 124
SOUTH BRUSH CREEK 8440 4.4 9.1 48 17.2 20.8 83
TOWER 10500 41.3 51.9 80 43.4 46.0 94
WEBBER SPRINGS 9250 20.1 22.1 91 30.4 31.8 96
WILLOW CREEK PASS 9540 16.2 12.9 126 15.5 16.3 95
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Basin wide percent of average 84 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 18.0 26.0 69 21.4 27.8 77
CASPER MTN. 7850 7.4 14.8 50 14.9 20.4 73
DEADMAN HILL 10220 17.9 19.0 94 18.0 21.7 83
DEER PARK 9700 25.7 18.0 143 29.3 27.8 105
LAPRELE CREEK 8375 -M 5.6 * -M 17.2 *
RENO HILL 8500 7.6 12.6 60 14.4 21.1 68
ROACH 9700 14.6 16.3 90 20.6 23.2 89
SAND LAKE 10050 25.4 36.4 70 26.0 30.3 86
SOUTH PASS 9040 20.0 16.3 123 24.3 23.3 104
WINDY PEAK 7900 1.9 3.5 54 10.8 14.2 76
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Basin wide percent of average 85 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 2.9 3 17.8 19.0 94
DIVIDE PEAK 8860 16.6 16.5 101 26.4 24.9 106
OLD BATTLE 9920 38.8 36.3 107 37.7 40.7 93
SANDSTONE RS 8150 4.3 7.1 61 21.5 22.5 96
WHISKEY PARK 8950 24.9 28.8 86 28.9 34.6 84
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Basin wide percent of average 92 93
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.5 11.6 125 17.6 16.4 107
BLIND BULL SUM 8900 19.7 26.6 74 18.7 25.8 72
EAST RIM DIVIDE 7930 1.8 11.4 16 12.4 14.3 87
ELKHART PARK G.S. 9400 12.6 11.3 112 17.2 16.6 104
GROS VENTRE SUMMIT 8750 10.1 11.8 86 13.0 15.8 82
KENDALL R.S. 7740 .2 7.3 3 14.7 17.0 86
LOOMIS PARK 8240 8.2 12.3 67 18.3 20.4 90
NEW FORK LAKE 8340 6.9 6.4 108 13.1 13.9 94
SNIDER BASIN 8060 10.1 10.5 96 16.0 18.9 85
SPRING CREEK DIVIDE 9000 25.7 26.9 96 26.0 30.8 84
TRIPLE PEAK 8500 12.6 20.9 60 23.1 29.2 79
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Basin wide percent of average 78 87
LOWER GREEN RIVER
HAMS FORK 7840 3.4 3.9 87 17.0 15.1 113
HEWINTA 9500 3.1 7.2 43 14.8 18.3 81
HICKERSON PARK 9100 .6 4.2 14 12.5 10.7 117
HOLE-IN-ROCK 9150 .5 3.4 15 12.3 10.2 121
INDIAN CREEK 9425 32.1 26.3 122 29.1 30.1 97
KELLEY R.S. 8180 13.1 12.0 109 23.0 24.1 95
STEEL CREEK PARK 10100 18.8 18.4 102 19.2 20.8 92
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Basin wide percent of average 95 99
UPPER BEAR RIVER
BUG LAKE 7950 19.1 15.0 127 27.3 22.9 119
HAYDEN FORK 9100 8.2 10.6 77 27.8 25.8 108
KELLEY R.S. 8180 13.1 12.0 109 23.0 24.1 95
LILY LAKE 9050 8.6 9.0 96 23.7 21.7 109
MONTE CRISTO 8960 30.9 25.9 119 35.1 31.0 113
SALT RIVER SUMMIT 7600 7.8 8.2 95 19.6 22.1 89
TRIAL LAKE 9960 32.8 25.1 131 34.5 30.2 114
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Basin wide percent of average 114 107
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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.