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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785

At 4:18p, 5/21/18
Temperature 67.7°F
Wind 4.0 mph


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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 FRIDAY: DECEMBER 23 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    9.4     6.2    152    16.9     8.9    190 
 Black Bear               8170   13.9    15.0     93    23.3    15.7    148 
 Blind Bull Sum           8650   12.5     8.0    156    14.2     8.2    173 
 Cottonwood Creek         7670    8.9     7.3    122    15.7     9.9    159 
 East Rim Divide          7930    5.0     3.7    135     8.3     4.8    173 
 Grand Targhee            9260   21.5    15.1    142    21.0    13.2    159 
 Granite Creek            6770    7.8     5.0    156    14.2     8.2    173 
 Grassy Lake              7265   13.3    10.6    125    24.7    14.8    167 
 Gros Ventre Summit       8750    5.2     5.1    102     9.6     5.4    178 
 Gunsight Pass            9820    6.2     4.7    132    10.5     5.6    188 
 Lewis Lake Divide        7850   11.0    10.9    101    22.8    14.7    155 
 Phillips Bench           8200    9.2     9.1    101    18.4    11.1    166 
 Salt River Summit        7760    4.5     4.0    112    10.5     6.6    159 
 Snake River Station      6920    8.8     5.4    163    17.6     9.7    181 
 Spring Creek Divide      9000   11.0     8.3    133    16.4     9.6    171 
 Thumb Divide             7980    5.5     5.3    104    11.5     7.7    149 
 Togwotee Pass            9580   12.6     9.8    129    16.2    10.2    159 
 Two Ocean Plateau        9240   16.9    11.0    154    18.2    11.3    161 
 Willow Creek             8380   10.4     9.4    111    21.3    13.8    154 
 Younts Peak              8350    7.0     6.0    117    11.6     6.8    171 
                                                -----                  -----
                Basin Index (%)                  125                    165 
 

MADISON-GALLATIN

 Black Bear               8170   13.9    15.0     93    23.3    15.7    148 
 Canyon                   7870    6.0     4.6    130    12.0     7.0    171 
 Madison Plateau          7750    7.5     9.1     82    17.4    10.7    163 
 West Yellowstone         6700    4.0     3.9    103    11.7     6.1    192 
 Whiskey Creek            6800    4.3     5.7     75    12.2     8.6    142 
                                                -----                  -----
                Basin Index (%)                   93                    159 
 

YELLOWSTONE

 Beartooth Lake           9360   11.1     8.8    126      -M     8.1       *
 Burnt Mtn                5880    3.0     1.8    167     6.8     6.4    106 
 Canyon                   7870    6.0     4.6    130    12.0     7.0    171 
 Cole Creek               7850    4.7     5.7     82     4.6     6.1     75 
 Evening Star             9200   13.4     9.8    137    19.3    11.7    165 
 Fisher Creek             9100   12.6    13.3     95    18.0    13.3    135 
 Northeast Entrance       7350    4.3     3.0    143     9.4     5.5    171 
 Parker Peak              9400   11.5     8.6    134    14.6     7.7    190 
 Sylvan Lake              8420    9.0     8.1    111    19.1    10.0    191 
 Thumb Divide             7980    5.5     5.3    104    11.5     7.7    149 
 Two Ocean Plateau        9240   16.9    11.0    154    18.2    11.3    161 
 White Mill               8700   10.5     8.8    119    13.9    10.1    138 
 Wolverine                7650    5.8     4.0    145     9.5     5.6    170 
                                                -----                  -----
                Basin Index (%)                  123                    153 
 

WIND RIVER

 Burroughs Creek          8750    7.5      -M       *    9.9      -M       *
 Castle Creek             8400    4.1      -M       *    6.2      -M       *
 Cold Springs             9630    3.6     2.9    124     6.0     4.6    130 
 Deer Park                9700    7.8     5.4    144    11.8     7.7    153 
 Hobbs Park              10100    7.1     6.0    118     8.0     5.7    140 
 Kirwin                   9550    6.1     4.1    149     9.0     5.1    176 
 Little Warm              9370    3.6     4.0     90     8.4     5.6    150 
 Owl Creek                8975    2.2     2.3     96     3.6     2.6    138 
 South Pass               9040    7.7     5.7    135     8.5     7.5    113 
 St. Lawrence Alt         8620    1.5     2.6     58     5.2     4.0    130 
 Togwotee Pass            9580   12.6     9.8    129    16.2    10.2    159 
 Townsend Creek           8700    3.0     3.5     86     5.9     5.4    109 
                                                -----                  -----
                Basin Index (%)                  119                    141 
 

BIGHORN BASIN

 Bald Mtn.                9380    9.2     7.3    126     8.1     7.2    112 
 Bear Trap Meadow         8200    1.4     2.4     58     3.4     3.9     87 
 Bone Springs Div         9350    6.3     6.7     94     7.3     6.5    112 
 Grave Springs            8550    2.3     2.9     79     3.8     4.6     83 
 Kirwin                   9550    6.1     4.1    149     9.0     5.1    176 
 Marquette                8760    3.4      -M       *    6.4      -M       *
 Middle Powder            7760    2.8     4.4     64     3.6     5.7     63 
 Owl Creek                8975    2.2     2.3     96     3.6     2.6    138 
 Powder River Pass        9480    1.6     4.1     39     4.5     5.4     83 
 Shell Creek              9580    7.0     6.6    106     6.0     6.0    100 
 Timber Creek             7950    2.5     1.9    132     3.9     3.8    103 
                                                -----                  -----
                Basin Index (%)                   97                    105 
 

SHOSHONE RIVER

 Blackwater               9780   14.7     9.4    156    17.9     9.0    199 
 Evening Star             9200   13.4     9.8    137    19.3    11.7    165 
 Marquette                8760    3.4      -M       *    6.4      -M       *
 Sylvan Road              7120    6.2     4.6    135    16.0     8.2    195 
 Younts Peak              8350    7.0     6.0    117    11.6     6.8    171 
                                                -----                  -----
                Basin Index (%)                  139                    182 
 

POWDER RIVER

 Bear Trap Meadow         8200    1.4     2.4     58     3.4     3.9     87 
 Cloud Peak Reservoir     9860    3.4     5.4     63     5.5     5.8     95 
 Grave Springs            8550    2.3     2.9     79     3.8     4.6     83 
 Hansen Sawmill           8360    2.5     2.6     96     4.1     3.8    108 
 Middle Powder            7760    2.8     4.4     64     3.6     5.7     63 
 Powder River Pass        9480    1.6     4.1     39     4.5     5.4     83 
 Soldier Park             8720    3.0      -M       *    4.7      -M       *
                                                -----                  -----
                Basin Index (%)                   64                     85 
 

TONGUE RIVER

 Big Goose                7990    3.2     3.3     97     4.4     5.0     88 
 Bone Springs Div         9350    6.3     6.7     94     7.3     6.5    112 
 Burgess Junction         7880    3.4     4.2     81     4.9     5.5     89 
 Dome Lake                8880    3.6     4.7     77     5.9     6.2     95 
 Little Goose             8870    3.6      -M       *    5.6      -M       *
 Sucker Creek             8880    4.2     4.5     93     5.0     6.2     81 
 Tie Creek                6870    2.6     1.4    186     5.5     5.1    108 
                                                -----                  -----
                Basin Index (%)                   94                     96 
 

BELLE FOURCHE

 Cole Canyon              5910    2.2     1.2    183     3.5     4.3     81 
                                                -----                  -----
                Basin Index (%)                  183                     81 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    2.9     2.5    116     4.2     5.4     78 
 North Rapid Creek        6130    2.7     2.6    104     3.0     4.6     65 
                                                -----                  -----
                Basin Index (%)                  110                     72 
 

UPPER N. PLATTE

 Arapaho Ridge           10960    9.9     8.4    118    11.7     9.8    119 
 Blackhall Mtn            9820   11.2      -M       *   13.4      -M       *
 Columbine                9160    9.2     7.8    118    11.8    10.4    113 
 Divide Peak              8880    6.0     7.2     83     8.4     9.3     90 
 Joe Wright              10120    7.1     8.7     82    11.9    11.0    108 
 Laprele Creek            8375    3.8     3.4    112     4.1     5.4     76 
 Med Bow                 10500   14.0      -M       *   14.7      -M       *
 North French Creek      10130    8.8    10.4     85    10.8    10.8    100 
 Never Summer            10280    8.3     7.7    108     8.6      -M       *
 Old Battle              10000   10.6    11.4     93    11.8    14.7     80 
 Rawah                    9020    5.1     3.8    134     7.9     6.7    118 
 Sage Creek Basin         7850    4.3     4.8     90     5.6     6.4     88 
 Sand Lake               10050    9.8    10.2     96     9.7    10.1     96 
 South Brush Creek        8440    3.3     4.2     79     5.0     6.5     77 
 Tower                   10500   13.4    17.9     75    16.7    16.6    101 
 Webber Springs           9250    8.1     8.5     95    11.6    11.2    104 
 Willow Creek Pass        9540    6.7     5.0    134     8.0     5.9    136 
 Zirkel                   9340   10.8     8.3    130    14.5    12.1    120 
                                                -----                  -----
                Basin Index (%)                   98                    102 
 

SWEETWATER

 Deer Park                9700    7.8     5.4    144    11.8     7.7    153 
 Larsen Creek             9000    5.8     4.2    138    10.0      -M       *
 South Pass               9040    7.7     5.7    135     8.5     7.5    113 
                                                -----                  -----
                Basin Index (%)                  139                    134 
 

LOWER N. PLATTE

 Casper Mtn.              7900    3.9     5.2     75     4.8     6.8     71 
 Laprele Creek            8375    3.8     3.4    112     4.1     5.4     76 
 Reno Hill                8400     -M     5.2       *     -M     6.5       *
 Windy Peak               7900    3.2     2.8    114     4.2     4.7     89 
                                                -----                  -----
                Basin Index (%)                   96                     78 
 

LARAMIE RIVER

 Brooklyn Lake           10240    7.1     7.2     99     7.6     8.3     92 
 Cinnabar Park            9574    6.6     7.7     86     9.3    10.1     92 
 Crow Creek               8330    2.1     3.9     54     3.7     4.9     76 
 Deadman Hill            10220    7.3     6.5    112     7.7     7.1    108 
 Rawah                    9020    5.1     3.8    134     7.9     6.7    118 
 Roach                    9700    5.1     6.0     85     6.8     8.1     84 
                                                -----                  -----
                Basin Index (%)                   95                     95 
 

S. PLATTE

 Black Mountain           8920    3.6      -M       *    5.3      -M       *
 Crow Creek               8330    2.1     3.9     54     3.7     4.9     76 
 Deadman Hill            10220    7.3     6.5    112     7.7     7.1    108 
                                                -----                  -----
                Basin Index (%)                   90                     95 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.4     3.3    103     6.4     6.4    100 
 Divide Peak              8880    6.0     7.2     83     8.4     9.3     90 
 Elk River                8700    7.4     5.7    130     8.5     8.1    105 
 Little Snake River       8915   10.3     7.2    143    15.3    13.1    117 
 Old Battle              10000   10.6    11.4     93    11.8    14.7     80 
 Sage Creek Basin         7850    4.3     4.8     90     5.6     6.4     88 
 Sandstone RS             8150    4.6     4.0    115     5.4     7.8     69 
 Whiskey Park             8950    8.7     8.4    104    11.7    10.8    108 
                                                -----                  -----
                Basin Index (%)                  106                     95 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    7.2     4.9    147    10.0     5.6    179 
 Blind Bull Sum           8650   12.5     8.0    156    14.2     8.2    173 
 East Rim Divide          7930    5.0     3.7    135     8.3     4.8    173 
 Elkhart Park G.S.        9400    4.7     4.7    100    10.1     5.7    177 
 Gros Ventre Summit       8750    5.2     5.1    102     9.6     5.4    178 
 Gunsight Pass            9820    6.2     4.7    132    10.5     5.6    188 
 Kendall R.S.             7740    6.7     4.1    163    11.0     5.7    193 
 Loomis Park              8240    7.9     5.4    146    13.2     7.0    189 
 New Fork Lake            8340    5.2     3.8    137     6.1     4.5    136 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060    5.1     4.5    113    10.4     5.8    179 
 Spring Creek Divide      9000   11.0     8.3    133    16.4     9.6    171 
 Triple Peak              8500   12.7     7.4    172    17.5     9.7    180 
                                                -----                  -----
                Basin Index (%)                  138                    177 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    4.1      -M       *    5.9      -M       *
 Buck Pasture             9700    5.8      -M       *    8.6      -M       *
 EF Blacks Fork GS        9360    5.2      -M       *    5.8      -M       *
 Hams Fork                7840    4.3     3.8    113     8.1     4.6    176 
 Hewinta                  9519    4.0     3.3    121     6.3     6.0    105 
 Hickerson Park           9145    3.4     2.3    148     3.8     4.6     83 
 Hole-in-Rock             9150    2.3     2.6     88     4.2     4.3     98 
 Indian Creek             9425   10.3     9.1    113    14.4     8.7    166 
 Kelley R.S.              8180    7.1     5.3    134    12.6     7.4    170 
 Spirit Lk               10235    4.5      -M       *    6.8      -M       *
 Steel Creek Park        10200    6.0     5.7    105     7.9     6.8    116 
                                                -----                  -----
                Basin Index (%)                  117                    135 
 

UPPER BEAR RIVER

 Bear River RS            8777    4.1      -M       *    6.1      -M       *
 Bug Lake                 7950    8.4     5.6    150    10.4     8.0    130 
 Burts Miller Ranch       8000    2.4      -M       *    3.4      -M       *
 Chalk Creek #1           8993    9.6     9.2    104    12.0    10.5    114 
 Hayden Fork              9212    6.8     4.6    148    10.9     8.6    127 
 Kelley R.S.              8180    7.1     5.3    134    12.6     7.4    170 
 Lily Lake                9156    4.6     4.6    100     6.9     7.4     93 
 Monte Cristo             8960    9.3     9.0    103    13.0    10.4    125 
 Salt River Summit        7760    4.5     4.0    112    10.5     6.6    159 
                                                -----                  -----
                Basin Index (%)                  119                    130 

-----------------------------------------------------------------------------


 -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.