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 THURSDAY: APRIL 6 , 2006
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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 20.6 17.6 117 26.0 22.1 118
COTTONWOOD CREEK 7600 30.4 24.1 126 32.0 28.5 112
GRANITE CREEK 6770 21.5 18.0 119 23.8 20.5 116
GRASSY LAKE 7265 40.1 36.4 110 43.1 37.1 116
GROS VENTRE SUMMIT 8750 12.7 14.5 88 13.4 13.4 100
LEWIS LAKE DIVIDE 7850 42.5 36.1 118 40.1 37.9 106
PHILLIPS BENCH 8200 35.6 29.7 120 35.1 30.0 117
SALT RIVER SUMMIT 7600 16.6 14.5 114 19.7 19.4 102
SNAKE RIVER STATION 6920 20.9 18.6 112 26.8 23.0 117
SPRING CREEK DIVIDE 9000 32.2 27.5 117 -M 27.4 *
THUMB DIVIDE 7980 20.0 19.0 105 19.6 19.6 100
TOGWOTEE PASS 9580 25.6 25.7 100 26.5 25.6 104
TWO OCEAN PLATEAU 9240 36.4 29.2 125 29.5 28.7 103
WILLOW CREEK 8450 36.9 31.1 119 41.1 33.5 123
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Basin wide percent of average 115 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 22.1 24.3 91 19.3 20.8 93
BLACK BEAR 8170 51.3 40.2 128 -M 41.7 *
CANYON 8090 15.0 13.9 108 17.8 15.9 112
FISHER CREEK 9100 39.7 36.0 110 37.5 37.6 100
MADISON PLATEAU 7750 28.9 25.7 112 34.0 27.7 123
NORTHEAST ENTRANCE 7350 9.8 11.1 88 12.7 13.1 97
PARKER PEAK 9400 19.3 22.4 86 17.4 16.9 103
SYLVAN LAKE 8420 18.7 23.3 80 23.0 21.7 106
THUMB DIVIDE 7980 20.0 19.0 105 19.6 19.6 100
TWO OCEAN PLATEAU 9240 36.4 29.2 125 29.5 28.7 103
WHISKEY CREEK 6800 16.6 17.5 95 24.5 21.7 113
WHITE MILL 8700 -M 25.1 * -M 27.9 *
WOLVERINE 7650 8.6 11.4 75 8.9 13.3 67
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Basin wide percent of average 105 103
WIND RIVER
BURROUGHS CREEK 8750 14.1 14.9 95 16.2 16.9 96
COLD SPRINGS 9630 5.7 8.3 69 8.6 11.2 77
DEER PARK 9700 17.4 17.1 102 20.8 22.9 91
HOBBS PARK 10100 11.1 15.7 71 11.7 13.6 86
LITTLE WARM 9370 9.3 12.2 76 12.1 14.1 86
SOUTH PASS 9040 16.3 17.1 95 16.9 19.3 88
ST. LAWRENCE ALT 8620 3.6 7.4 49 6.5 9.4 69
TOGWOTEE PASS 9580 25.6 25.7 100 26.5 25.6 104
TOWNSEND CREEK 8700 6.5 9.2 71 9.4 12.3 76
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Basin wide percent of average 86 89
BIGHORN BASIN
BALD MTN. 9380 16.7 20.6 81 13.7 18.1 76
BEAR TRAP MEADOW 8200 4.9 5.0 98 7.8 8.7 90
BLACKWATER 9780 22.8 25.6 89 20.6 21.4 96
BONE SPRINGS DIV 9350 14.1 16.9 83 15.0 15.3 98
EVENING STAR 9200 25.1 30.8 81 27.9 26.2 106
GRAVE SPRINGS 8550 9.6 9.9 97 11.6 10.3 113
KIRWIN 9550 10.0 11.8 85 10.9 11.8 92
MARQUETTE 8760 2.4 9.6 25 7.3 10.5 70
MIDDLE POWDER 7760 12.3 12.6 98 10.0 13.0 77
OWL CREEK 8975 2.7 5.5 49 6.0 6.3 95
POWDER RIVER PASS 9480 10.0 11.3 88 12.1 13.0 93
SHELL CREEK 9580 14.6 15.3 95 13.4 14.0 96
SYLVAN LAKE 8420 18.7 23.3 80 23.0 21.7 106
SYLVAN ROAD 7120 10.9 12.6 87 16.7 18.2 92
TIMBER CREEK 7950 2.2 5.8 38 5.0 7.9 63
YOUNTS PEAK 8350 14.3 17.6 81 17.4 16.7 104
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Basin wide percent of average 82 94
SHOSHONE RIVER
BLACKWATER 9780 22.8 25.6 89 20.6 21.4 96
EVENING STAR 9200 25.1 30.8 81 27.9 26.2 106
KIRWIN 9550 10.0 11.8 85 10.9 11.8 92
MARQUETTE 8760 2.4 9.6 25 7.3 10.5 70
SYLVAN LAKE 8420 18.7 23.3 80 23.0 21.7 106
SYLVAN ROAD 7120 10.9 12.6 87 16.7 18.2 92
YOUNTS PEAK 8350 14.3 17.6 81 17.4 16.7 104
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Basin wide percent of average 79 98
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.9 5.0 98 7.8 8.7 90
BIG GOOSE 7990 6.6 11.3 58 9.0 9.2 98
BONE SPRINGS DIV 9350 14.1 16.9 83 15.0 15.3 98
BURGESS JUNCTION 7880 9.6 12.2 79 10.8 12.7 85
CLOUD PEAK RESERVOIR 9860 12.7 14.1 90 12.3 13.6 90
DOME LAKE 8880 10.0 13.1 76 11.3 13.8 82
GRAVE SPRINGS 8550 9.6 9.9 97 11.6 10.3 113
HANSEN SAWMILL 8360 4.1 6.4 64 7.2 8.7 83
MIDDLE POWDER 7760 12.3 12.6 98 10.0 13.0 77
POWDER RIVER PASS 9480 10.0 11.3 88 12.1 13.0 93
SUCKER CREEK 8880 10.2 12.4 82 13.8 14.2 97
TIE CREEK 6870 3.6 5.8 62 10.0 10.5 95
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Basin wide percent of average 82 92
BELLE FOURCHE
BLIND PARK 6890 6.4 8.3 77 10.9 11.6 94
COLE CANYON 5910 4.1 6.1 67 9.2 -M *
NORTH RAPID CREEK 6130 6.0 8.5 71 8.9 9.1 98
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Basin wide percent of average 72 96
UPPER N. PLATTE RIVER
COLUMBINE 9160 31.3 24.9 126 33.6 25.9 130
DIVIDE PEAK 8860 19.3 20.3 95 22.5 21.4 105
ELK RIVER 8700 20.4 19.6 104 21.7 20.2 107
JOE WRIGHT 10120 22.0 22.2 99 26.2 25.8 102
NORTH FRENCH CREEK 10130 34.8 30.6 114 32.8 25.6 128
OLD BATTLE 9920 38.6 33.2 116 42.7 35.6 120
SAGE CREEK BASIN 7850 11.6 11.8 98 14.9 12.4 120
SOUTH BRUSH CREEK 8440 11.6 13.2 88 17.2 17.0 101
TOWER 10500 52.6 47.1 112 47.0 39.7 118
WEBBER SPRINGS 9250 28.8 26.3 110 34.7 27.5 126
WILLOW CREEK PASS 9540 11.4 12.6 90 13.8 13.4 103
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Basin wide percent of average 108 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 26.9 24.8 108 22.5 22.9 98
CASPER MTN. 7850 15.4 15.4 100 16.5 15.2 109
DEADMAN HILL 10220 16.0 17.1 94 18.2 17.7 103
DEER PARK 9700 17.4 17.1 102 20.8 22.9 91
LAPRELE CREEK 8375 9.5 10.7 89 11.7 13.2 89
RENO HILL 8500 14.8 14.9 99 17.1 15.9 108
ROACH 9700 16.7 17.6 95 20.0 19.3 104
SAND LAKE 10050 32.7 33.5 98 31.4 25.1 125
SOUTH PASS 9040 16.3 17.1 95 16.9 19.3 88
WINDY PEAK 7900 7.8 8.1 96 10.4 11.1 94
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Basin wide percent of average 98 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.0 10.2 108 16.8 16.4 102
DIVIDE PEAK 8860 19.3 20.3 95 22.5 21.4 105
OLD BATTLE 9920 38.6 33.2 116 42.7 35.6 120
SANDSTONE RS 8150 15.4 14.3 108 21.7 19.3 112
WHISKEY PARK 8950 42.6 30.5 140 36.6 29.6 124
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Basin wide percent of average 117 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.7 14.9 105 15.8 13.9 114
BLIND BULL SUM 8900 29.6 28.5 104 22.1 22.9 97
EAST RIM DIVIDE 7930 11.7 13.6 86 12.2 12.5 98
ELKHART PARK G.S. 9400 15.2 13.7 111 16.0 13.8 116
GROS VENTRE SUMMIT 8750 12.7 14.5 88 13.4 13.4 100
KENDALL R.S. 7740 14.8 14.2 104 16.0 15.0 107
LOOMIS PARK 8240 20.8 17.4 120 20.5 18.0 114
NEW FORK LAKE 8340 11.6 11.3 103 11.0 11.7 94
SNIDER BASIN 8060 19.2 14.8 130 17.6 16.7 105
SPRING CREEK DIVIDE 9000 32.2 27.5 117 -M 27.4 *
TRIPLE PEAK 8500 31.2 25.4 123 31.7 25.7 123
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Basin wide percent of average 110 108
LOWER GREEN RIVER
HAMS FORK 7840 15.3 11.3 135 14.3 12.7 113
HEWINTA 9500 11.9 12.2 98 15.4 15.2 101
HICKERSON PARK 9100 5.4 7.9 68 8.5 8.4 101
HOLE-IN-ROCK 9150 7.7 7.2 107 9.0 7.9 114
INDIAN CREEK 9425 32.9 28.7 115 -M 26.3 *
KELLEY R.S. 8180 20.9 17.1 122 22.8 21.1 108
STEEL CREEK PARK 10100 16.9 16.4 103 17.8 16.9 105
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Basin wide percent of average 110 107
UPPER BEAR RIVER
BUG LAKE 7950 26.4 21.4 123 23.6 20.0 118
HAYDEN FORK 9100 22.2 16.6 134 25.8 21.9 118
KELLEY R.S. 8180 20.9 17.1 122 22.8 21.1 108
LILY LAKE 9050 14.5 13.9 104 17.3 18.2 95
MONTE CRISTO 8960 37.8 30.3 125 34.1 26.5 129
SALT RIVER SUMMIT 7600 16.6 14.5 114 19.7 19.4 102
TRIAL LAKE 9960 31.9 25.7 124 29.1 25.9 112
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Basin wide percent of average 122 113
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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.