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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


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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 WEDNESDAY: JANUARY 17 , 2018
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7060   10.6     9.7    109    12.3    12.3    100 
 Black Bear               8170     -M    20.9       *     -M    21.7       *
 Blind Bull Sum           8650   17.1    12.3    139    10.8    11.3     96 
 Cottonwood Creek         7670   11.6    10.6    109    13.3    13.9     96 
 East Rim Divide          7930    6.1     5.7    107     6.6     6.8     97 
 Grand Targhee            9260   28.5    21.2    134    17.1    18.0     95 
 Granite Creek            6770    9.1     8.7    105    12.1    11.8    103 
 Grassy Lake              7265   14.6    16.7     87    18.1    20.9     87 
 Gros Ventre Summit       8750    9.3     7.5    124     8.7     7.3    119 
 Gunsight Pass            9820    9.0     7.4    122     9.4     7.8    121 
 Lewis Lake Divide        7850   17.2    16.6    104    20.0    20.4     98 
 Phillips Bench           8200   12.7    15.0     85    14.3    16.0     89 
 Salt River Summit        7640    4.9     6.4     77     7.0     9.3     75 
 Snake River Station      6920    9.0     9.1     99    13.3    13.5     99 
 Spring Creek Divide      9000   13.2    12.2    108    13.2    13.6     97 
 Thumb Divide             7980   10.2     8.0    128    11.3    10.8    105 
 Togwotee Pass            9580   18.2    13.0    140    18.5    14.1    131 
 Two Ocean Plateau        9240   22.5    15.5    145    16.5    15.4    107 
 Willow Creek             8080   16.6    14.3    116    19.4    19.0    102 
 Younts Peak              8350     -M     8.5       *     -M     9.4       *
                                                -----                  -----
                Basin Index (%)                  115                    100 
 

MADISON-GALLATIN

 Black Bear               8170     -M    20.9       *     -M    21.7       *
 Canyon                   7870    9.2     7.3    126    10.7     9.4    114 
 Madison Plateau          7750   12.7    12.5    102    13.9    15.2     91 
 West Yellowstone         6700    6.5     6.3    103     9.3     8.4    111 
 Whiskey Creek            6800    7.3     8.4     87     9.6    11.7     82 
                                                -----                  -----
                Basin Index (%)                  103                     97 
 

YELLOWSTONE

 Beartooth Lake           9360   21.5    12.5    172    19.7    11.3    174 
 Burnt Mtn                5880    3.2     2.2    145     8.5     7.4    115 
 Canyon                   7870    9.2     7.3    126    10.7     9.4    114 
 Cole Creek               7850    8.2     7.2    114     5.7     7.1     80 
 Evening Star             9200   23.1    14.1    164    24.6    15.9    155 
 Fisher Creek             9100   29.3    18.4    159    25.1    18.2    138 
 Northeast Entrance       7350    6.4     5.4    119     9.7     7.3    133 
 Parker Peak              9400   19.5    11.6    168      -M    10.1       *
 Sylvan Lake              8420   14.0    11.2    125    15.3    13.2    116 
 Thumb Divide             7980   10.2     8.0    128    11.3    10.8    105 
 Two Ocean Plateau        9240   22.5    15.5    145    16.5    15.4    107 
 White Mill               8700   22.5    12.8    176    16.4    13.7    120 
 Wolverine                7650    9.9     6.0    165    12.4     7.4    168 
                                                -----                  -----
                Basin Index (%)                  151                    128 
 

WIND RIVER

 Burroughs Creek          8750    9.1      -M       *   10.8      -M       *
 Castle Creek             8400    5.1      -M       *    6.4      -M       *
 Cold Springs             9630    5.6     4.1    137     6.1     5.7    107 
 Deer Park                9700    7.3     7.3    100     8.7    10.9     80 
 Hobbs Park              10100   10.3     7.3    141     8.7     7.0    124 
 Kirwin                   9550   11.8     5.3    223    10.5     6.6    159 
 Little Warm              9370    9.9     5.6    177    10.1     7.3    138 
 Owl Creek                8975    2.7     2.9     93     4.3     3.3    130 
 South Pass               9040    6.9     7.8     88     4.9     9.8     50 
 St. Lawrence Alt         8620    2.3     3.5     66     5.5     4.9    112 
 Togwotee Pass            9580   18.2    13.0    140    18.5    14.1    131 
 Townsend Creek           8700    4.3     4.4     98     5.4     6.5     83 
                                                -----                  -----
                Basin Index (%)                  130                    109 
 

BIGHORN BASIN

 Bald Mtn.                9380   11.6     9.9    117     8.0     9.6     83 
 Bear Trap Meadow         8200    4.3     2.9    148     5.4     4.7    115 
 Bone Springs Div         9350    9.7     8.7    111     7.4     8.5     87 
 Grave Springs            8550    3.6     4.4     82     3.2     5.8     55 
 Kirwin                   9550   11.8     5.3    223    10.5     6.6    159 
 Marquette                8760    3.7      -M       *    6.7      -M       *
 Middle Powder            7760    5.0     6.0     83     3.6     6.7     54 
 Owl Creek                8975    2.7     2.9     93     4.3     3.3    130 
 Powder River Pass        9480    8.6     5.8    148     7.3     7.0    104 
 Shell Creek              9580   11.6     8.4    138     8.2     7.8    105 
 Timber Creek             7950    2.1     2.6     81     1.6     4.2     38 
                                                -----                  -----
                Basin Index (%)                  125                     93 
 

SHOSHONE RIVER

 Blackwater               9780   20.9    13.0    161    18.5    11.8    157 
 Evening Star             9200   23.1    14.1    164    24.6    15.9    155 
 Marquette                8760    3.7      -M       *    6.7      -M       *
 Sylvan Road              7120    7.9     6.8    116    12.2    10.7    114 
 Younts Peak              8350     -M     8.5       *     -M     9.4       *
                                                -----                  -----
                Basin Index (%)                  153                    144 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.3     2.9    148     5.4     4.7    115 
 Cloud Peak Reservoir     9860    8.0     7.3    110     7.5     7.1    106 
 Grave Springs            8550    3.6     4.4     82     3.2     5.8     55 
 Hansen Sawmill           8360    3.7     3.5    106     5.0     4.6    109 
 Middle Powder            7760    5.0     6.0     83     3.6     6.7     54 
 Powder River Pass        9480    8.6     5.8    148     7.3     7.0    104 
 Soldier Park             8720    2.7      -M       *    5.5      -M       *
                                                -----                  -----
                Basin Index (%)                  111                     89 
 

TONGUE RIVER

 Big Goose                7990    3.5     4.3     81     4.2     5.9     71 
 Bone Springs Div         9350    9.7     8.7    111     7.4     8.5     87 
 Burgess Junction         7880    4.4     5.9     75     4.1     6.8     60 
 Dome Lake                8880    6.0     6.2     97     5.7     7.6     75 
 Little Goose             8870    4.4      -M       *    6.4      -M       *
 Sucker Creek             8880    5.0     6.4     78      -M     7.8       *
 Tie Creek                6870    1.8     2.8     64     4.7     6.5     72 
                                                -----                  -----
                Basin Index (%)                   89                     74 
 

BELLE FOURCHE

 Cole Canyon              5910    3.3     2.7    122     5.1     5.2     98 
                                                -----                  -----
                Basin Index (%)                  122                     98 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    4.0     4.1     98     6.0     7.0     86 
 North Rapid Creek        6130    4.3     3.7    116     4.5     5.7     79 
                                                -----                  -----
                Basin Index (%)                  106                     83 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   10.4    11.2     93    10.2    12.9     79 
 Blackhall Mtn            9820   13.8      -M       *   14.2      -M       *
 Columbine                9160    5.1    12.5     41      -M    14.2       *
 Divide Peak              8880    7.3    10.5     70    10.8    12.1     89 
 Joe Wright              10120    8.8    11.4     77    15.8    14.2    111 
 Laprele Creek            8375    3.3     5.0     66     4.7     6.8     69 
 Med Bow                 10500   22.1      -M       *   18.9      -M       *
 North French Creek      10130   15.5    14.0    111    15.9    14.8    107 
 Never Summer            10280    9.1    10.6     86     7.9      -M       *
 Old Battle              10000   12.7    15.8     80    12.2    19.7     62 
 Rawah                    9020    6.0     5.5    109     8.8     8.5    104 
 Sage Creek Basin         7850    4.8     7.3     66     6.5     8.7     75 
 Sand Lake               10050   14.6    14.5    101    12.3    13.4     92 
 South Brush Creek        8440    5.7     6.2     92     7.2     8.5     85 
 Tower                   10500   16.2    22.9     71    17.1    22.3     77 
 Webber Springs           9250    8.9    12.0     74    11.2    14.9     75 
 Willow Creek Pass        9540    7.1     6.3    113     7.6     7.4    103 
 Zirkel                   9340   10.8    15.9     68    15.9    16.7     95 
                                                -----                  -----
                Basin Index (%)                   81                     86 
 

SWEETWATER

 Deer Park                9700    7.3     7.3    100     8.7    10.9     80 
 Larsen Creek             9000    4.4     6.1     72     7.0      -M       *
 South Pass               9040    6.9     7.8     88     4.9     9.8     50 
                                                -----                  -----
                Basin Index (%)                   88                     66 
 

LOWER N. PLATTE

 Casper Mtn.              7900    4.4     6.8     65      -M     8.2       *
 Laprele Creek            8375    3.3     5.0     66     4.7     6.8     69 
 Reno Hill                8400    5.5     6.7     82     6.6     8.1     81 
 Windy Peak               7900    2.7     3.7     73     4.3     5.8     74 
                                                -----                  -----
                Basin Index (%)                   72                     75 
 

LARAMIE RIVER

 Brooklyn Lake           10240   12.9    10.9    118    13.8    11.2    123 
 Cinnabar Park            9574   13.1    11.7    112    15.6    14.3    109 
 Crow Creek               8330    1.4     5.1     27      -M     6.0       *
 Deadman Hill            10220   10.5     8.3    127    10.5     9.1    115 
 Rawah                    9020    6.0     5.5    109     8.8     8.5    104 
 Roach                    9700    7.6     8.8     86    10.2    10.5     97 
                                                -----                  -----
                Basin Index (%)                  102                    110 
 

S. PLATTE

 Black Mountain           8920    4.6      -M       *    7.2      -M       *
 Crow Creek               8330    1.4     5.1     27      -M     6.0       *
 Deadman Hill            10220   10.5     8.3    127    10.5     9.1    115 
                                                -----                  -----
                Basin Index (%)                   89                    115*
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    2.6     5.7     46     4.9     8.6     57 
 Divide Peak              8880    7.3    10.5     70    10.8    12.1     89 
 Elk River                8700    7.5     9.4     80     9.1    11.2     81 
 Little Snake River       8915    9.3    12.4     75    14.6    17.9     82 
 Old Battle              10000   12.7    15.8     80    12.2    19.7     62 
 Sage Creek Basin         7850    4.8     7.3     66     6.5     8.7     75 
 Sandstone RS             8150    4.5     6.9     65     4.7    10.5     45 
 Whiskey Park             8950   10.6    13.5     79    13.4    15.3     88 
                                                -----                  -----
                Basin Index (%)                   73                     73 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    7.7     7.0    110     7.8     7.4    105 
 Blind Bull Sum           8650   17.1    12.3    139    10.8    11.3     96 
 East Rim Divide          7930    6.1     5.7    107     6.6     6.8     97 
 Elkhart Park G.S.        9400    6.9     6.5    106     6.9     7.6     91 
 Gros Ventre Summit       8750    9.3     7.5    124     8.7     7.3    119 
 Gunsight Pass            9820    9.0     7.4    122     9.4     7.8    121 
 Kendall R.S.             7740    8.4     6.6    127     9.3     8.1    115 
 Loomis Park              8240    9.0     7.9    114     9.7     9.9     98 
 New Fork Lake            8340    6.6     5.7    116      -M     6.2       *
 Pocket Creek             9360    6.2      -M       *    5.4      -M       *
 Snider Basin             8060    6.3     6.4     98     8.1     8.1    100 
 Spring Creek Divide      9000   13.2    12.2    108    13.2    13.6     97 
 Triple Peak              8500   13.9    11.4    122    15.8    13.9    114 
                                                -----                  -----
                Basin Index (%)                  117                    104 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    3.5      -M       *    5.0      -M       *
 Buck Pasture             9632    6.0      -M       *    6.8      -M       *
 EF Blacks Fork GS        9360    3.2      -M       *    3.7      -M       *
 Hams Fork                7840    4.4     5.8     76     5.1     6.4     80 
 Hewinta                  9500    3.8     4.9     78     5.9     7.6     78 
 Hickerson Park           9122    3.2     3.2    100     2.7     5.6     48 
 Hole-in-Rock             9168    2.8     3.4     82     3.3     5.2     63 
 Indian Creek             9425   11.1    12.5     89     8.6    12.3     70 
 Kelley R.S.              8180    6.7     7.5     89     7.8    10.2     76 
 Spirit Lk               10235    3.5      -M       *    4.2      -M       *
 Steel Creek Park        10158    7.1     7.4     96     7.2     8.8     82 
                                                -----                  -----
                Basin Index (%)                   87                     72 
 

UPPER BEAR RIVER

 Bear River RS            8777    3.9      -M       *    5.5      -M       *
 Bug Lake                 7987    7.7     8.7     89     8.9    10.9     82 
 Burts Miller Ranch       8000    2.0      -M       *    3.4      -M       *
 Chalk Creek #1           9171    7.3    11.7     62     8.3    13.8     60 
 Hayden Fork              9130    6.2     7.3     85     8.1    11.5     70 
 Kelley R.S.              8180    6.7     7.5     89     7.8    10.2     76 
 Lily Lake                9133    5.6     6.5     86     5.8     9.5     61 
 Monte Cristo             8932   10.6    13.7     77    10.7    14.4     74 
 Salt River Summit        7640    4.9     6.4     77     7.0     9.3     75 
                                                -----                  -----
                Basin Index (%)                   79                     71 

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


 -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.