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 5 , 2001
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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 8.5 17.3 49 13.1 23.1 57
COTTONWOOD CREEK 7600 16.7 24.2 69 19.8 26.0 76
GRANITE CREEK 6770 11.3 18.5 61 15.1 24.4 62
GRASSY LAKE 7265 21.6 36.7 59 24.5 38.6 63
GROS VENTRE SUMMIT 8775 10.2 15.9 64 9.1 16.5 55
LEWIS LAKE DIVIDE 7860 17.8 36.0 49 20.3 39.2 52
PHILLIPS BENCH 8200 17.7 29.8 59 -M 31.0 *
SALT RIVER SUMMIT 7600 8.1 14.3 57 12.3 17.6 70
SNAKE RIVER STATION 6920 11.0 18.7 59 15.8 27.1 58
SPRING CREEK DIVIDE 9000 18.4 28.6 64 18.1 28.5 64
THUMB DIVIDE 7980 8.4 17.3 49 11.0 21.6 51
TOGWOTEE PASS 9580 17.6 25.7 68 17.8 29.4 61
TWO OCEAN PLATEAU 9360 20.3 26.7 76 18.0 31.8 57
WILLOW CREEK 8450 19.8 30.8 64 25.3 33.3 76
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Basin wide percent of average 61 62
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 12.8 24.3 53 12.1 18.6 65
BLACK BEAR 7950 -M 39.0 * -M 42.0 *
CANYON 7940 9.4 13.2 71 11.9 14.7 81
FISHER CREEK 9100 19.9 36.6 54 20.7 37.8 55
MADISON PLATEAU 7750 13.6 25.0 54 16.3 27.1 60
NORTHEAST ENTRANCE 7350 4.9 9.1 54 7.9 12.2 65
PARKER PEAK 9400 15.0 22.2 68 13.6 16.0 85
SYLVAN LAKE 8420 15.5 22.8 68 18.7 19.7 95
THUMB DIVIDE 7980 8.4 17.3 49 11.0 21.6 51
TWO OCEAN PLATEAU 9360 20.3 26.7 76 18.0 31.8 57
WHISKEY CREEK 6800 -M 17.7 * -M 22.6 *
WHITE MILL 8700 14.1 25.3 56 13.8 29.2 47
WOLVERINE 7650 7.4 11.7 63 7.9 13.1 60
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Basin wide percent of average 60 63
WIND RIVER
BURROUGHS CREEK 8750 -M 15.1 * -M 17.1 *
COLD SPRINGS 9630 3.7 8.5 44 5.7 10.9 52
DEER PARK 9700 12.1 -M * 13.3 -M *
HOBBS PARK 10100 7.5 15.5 48 7.1 14.6 49
LITTLE WARM 9620 8.1 12.1 67 8.5 13.7 62
SOUTH PASS 9040 10.6 16.7 63 9.8 17.6 56
ST. LAWRENCE ALT 8620 3.5 7.5 47 4.5 10.5 43
TOGWOTEE PASS 9580 17.6 25.7 68 17.8 29.4 61
TOWNSEND CREEK 8700 5.2 10.0 52 6.4 12.9 50
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Basin wide percent of average 59 55
BIGHORN BASIN
BALD MTN. 9375 15.7 21.0 75 14.4 17.9 80
BEAR TRAP MEADOW 7900 6.0 7.1 85 6.5 8.5 76
BLACKWATER 9780 15.9 23.1 69 14.8 18.4 80
BONE SPRINGS DIV 9350 12.1 17.0 71 12.1 15.5 78
EVENING STAR 9200 16.1 27.8 58 20.0 23.1 87
GRAVE SPRINGS 8550 6.9 9.9 70 7.2 10.0 72
KIRWIN 9550 6.1 10.3 59 6.9 11.1 62
MARQUETTE 8760 4.7 8.3 57 5.7 10.0 57
MIDDLE POWDER 7760 8.9 12.6 71 7.6 12.2 62
OWL CREEK 8975 3.7 4.6 80 3.9 6.5 60
POWDER RIVER PASS 9480 7.5 11.1 68 9.2 11.9 77
SHELL CREEK 9580 12.3 15.3 80 11.8 13.5 87
SYLVAN LAKE 8420 15.5 22.8 68 18.7 19.7 95
SYLVAN ROAD 8120 9.4 12.0 78 13.9 16.5 84
TIMBER CREEK 7950 3.5 6.4 55 4.7 7.4 64
YOUNTS PEAK 8350 9.0 17.6 51 9.9 17.0 58
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Basin wide percent of average 68 76
SHOSHONE RIVER
BLACKWATER 9780 15.9 23.1 69 14.8 18.4 80
EVENING STAR 9200 16.1 27.8 58 20.0 23.1 87
KIRWIN 9550 6.1 10.3 59 6.9 11.1 62
MARQUETTE 8760 4.7 8.3 57 5.7 10.0 57
SYLVAN LAKE 8420 15.5 22.8 68 18.7 19.7 95
SYLVAN ROAD 8120 9.4 12.0 78 13.9 16.5 84
YOUNTS PEAK 8350 9.0 17.6 51 9.9 17.0 58
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Basin wide percent of average 63 78
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.0 7.1 85 6.5 8.5 76
BIG GOOSE 7990 6.3 -M * 7.4 -M *
BONE SPRINGS DIV 9350 12.1 17.0 71 12.1 15.5 78
BURGESS JUNCTION 7880 8.9 12.1 74 8.7 11.9 73
CLOUD PEAK RESERVOIR 9860 10.4 15.4 68 9.7 13.8 70
DOME LAKE 8880 10.2 14.1 72 9.2 13.6 68
GRAVE SPRINGS 8550 6.9 9.9 70 7.2 10.0 72
HANSEN SAWMILL 8760 5.1 7.2 71 6.2 8.2 76
MIDDLE POWDER 7760 8.9 12.6 71 7.6 12.2 62
POWDER RIVER PASS 9480 7.5 11.1 68 9.2 11.9 77
SUCKER CREEK 8880 8.5 12.5 68 9.9 13.6 73
TIE CREEK 6870 5.3 -M * 7.9 11.4 69
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Basin wide percent of average 71 72
BELLE FOURCHE
BLIND PARK 6890 7.9 11.2 71 11.4 10.5 109
COLE CANYON 5910 5.8 6.1 95 10.2 8.3 123
NORTH RAPID CREEK 6130 7.7 -M * 9.3 -M *
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Basin wide percent of average 79 115
UPPER N. PLATTE RIVER
COLUMBINE 9400 19.2 24.8 77 20.9 25.0 84
DIVIDE PEAK 8800 15.7 21.4 73 17.8 23.4 76
ELK RIVER 8700 15.9 20.1 79 16.5 19.6 84
JOE WRIGHT 10120 -M 22.7 * -M 25.7 *
NORTH FRENCH CREEK 10100 27.2 26.3 103 20.9 24.1 87
OLD BATTLE 10000 24.4 33.2 73 26.3 30.9 85
SOUTH BRUSH CREEK 8400 8.7 13.3 65 -M 16.9 *
TOWER 10500 -M 46.4 * -M 37.1 *
WEBBER SPRINGS 9200 16.2 28.4 57 18.6 25.9 72
WILLOW CREEK PASS 9540 11.6 12.4 94 12.6 13.0 97
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Basin wide percent of average 77 83
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.5 27.1 68 16.8 20.0 84
CASPER MTN. 7900 11.5 17.3 66 10.3 14.6 71
DEADMAN HILL 10220 13.0 16.9 77 11.8 17.3 68
DEER PARK 9700 12.1 -M * 13.3 -M *
LAPRELE CREEK 8320 9.3 10.4 89 9.6 12.2 79
RENO HILL 8400 13.0 14.7 88 11.8 19.6 60
ROACH 9700 11.7 17.6 66 14.1 21.7 65
SAND LAKE 10080 25.6 33.8 76 20.9 20.9 100
SOUTH PASS 9040 10.6 16.7 63 9.8 17.6 56
WINDY PEAK 7840 7.1 8.9 80 8.8 9.9 89
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Basin wide percent of average 74 74
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.7 11.2 69 12.9 15.7 82
DIVIDE PEAK 8800 15.7 21.4 73 17.8 23.4 76
OLD BATTLE 10000 24.4 33.2 73 26.3 30.9 85
SANDSTONE RS 8150 10.8 15.1 72 15.6 19.2 81
WHISKEY PARK 8950 21.9 29.5 74 21.1 29.0 73
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Basin wide percent of average 73 79
UPPER GREEN RIVER
BIG SANDY OPENING 9100 11.5 14.9 77 10.7 16.9 63
BLIND BULL SUM 8650 16.4 30.1 54 13.5 24.9 54
EAST RIM DIVIDE 7930 10.3 14.3 72 9.2 15.7 59
ELKHART PARK G.S. 9400 11.9 14.2 84 11.4 16.6 69
GROS VENTRE SUMMIT 8775 10.2 15.9 64 9.1 16.5 55
KENDALL R.S. 7740 8.7 14.2 61 9.9 16.1 61
LOOMIS PARK 8240 11.8 17.4 68 12.7 19.6 65
NEW FORK LAKE 8340 9.3 11.1 84 8.8 15.0 59
SNIDER BASIN 8250 9.5 15.1 63 10.9 15.7 69
SPRING CREEK DIVIDE 9000 18.4 28.6 64 18.1 28.5 64
TRIPLE PEAK 8500 16.2 26.2 62 18.8 32.1 59
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Basin wide percent of average 66 61
LOWER GREEN RIVER
HAMS FORK 7840 8.0 10.4 77 8.5 13.9 61
HEWINTA 9500 7.6 10.8 70 11.1 13.5 82
HICKERSON PARK 9150 7.4 6.8 109 10.4 9.9 105
HOLE-IN-ROCK 9150 6.3 6.4 98 9.5 9.9 96
INDIAN CREEK 9425 18.4 29.4 63 15.7 26.9 58
KELLEY R.S. 8180 11.3 17.4 65 13.3 19.5 68
STEEL CREEK PARK 10100 12.3 17.0 72 12.5 13.2 95
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Basin wide percent of average 73 76
UPPER BEAR RIVER
BUG LAKE 7950 12.4 20.9 59 13.2 20.0 66
HAYDEN FORK 9400 9.9 14.9 66 16.2 19.6 83
KELLEY R.S. 8180 11.3 17.4 65 13.3 19.5 68
LILY LAKE 9050 10.1 13.3 76 12.6 15.2 83
MONTE CRISTO 8960 19.0 29.7 64 19.3 26.3 73
SALT RIVER SUMMIT 7600 8.1 14.3 57 12.3 17.6 70
TRIAL LAKE 9960 15.4 25.3 61 17.6 24.6 72
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Basin wide percent of average 63 73
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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 1961-90.
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.