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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 9:48a, 5/27/18
Temperature 63.9°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 SUNDAY: JANUARY 21 , 2018
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7060   10.9    10.0    109    12.6    12.6    100 
 Black Bear               8170   24.6    21.8    113    23.7    22.4    106 
 Blind Bull Sum           8650   17.4    12.7    137    11.1    11.7     95 
 Cottonwood Creek         7670   12.3    11.2    110    14.2    14.4     99 
 East Rim Divide          7930    6.3     6.1    103     6.7     7.0     96 
 Grand Targhee            9260   29.5    21.5    137    17.4    18.5     94 
 Granite Creek            6770    9.3     9.2    101    12.3    12.2    101 
 Grassy Lake              7265   16.0    17.5     91    19.4    21.5     90 
 Gros Ventre Summit       8750    9.5     7.7    123     8.8     7.5    117 
 Gunsight Pass            9820    9.1     7.7    118     9.5     8.1    117 
 Lewis Lake Divide        7850   18.5    17.4    106    21.1    21.0    100 
 Phillips Bench           8200   13.0    15.6     83    14.6    16.4     89 
 Salt River Summit        7640    5.4     6.9     78     7.4     9.7     76 
 Snake River Station      6920    9.8     9.4    104    13.9    13.9    100 
 Spring Creek Divide      9000   13.9    12.6    110    13.8    14.0     99 
 Thumb Divide             7980   10.9     8.4    130    11.9    11.0    108 
 Togwotee Pass            9580   18.6    13.2    141    18.8    14.5    130 
 Two Ocean Plateau        9240   23.6    15.8    149    17.7    15.8    112 
 Willow Creek             8080   17.5    15.2    115    20.5    19.6    105 
 Younts Peak              8350     -M     8.8       *     -M     9.6       *
                                                -----                  -----
                Basin Index (%)                  115                    101 
 

MADISON-GALLATIN

 Black Bear               8170   24.6    21.8    113    23.7    22.4    106 
 Canyon                   7870   10.4     7.5    139    12.0     9.7    124 
 Madison Plateau          7750   14.9    13.2    113    15.9    15.7    101 
 West Yellowstone         6700    7.6     6.6    115    10.5     8.7    121 
 Whiskey Creek            6800    8.8     8.8    100    10.7    12.1     88 
                                                -----                  -----
                Basin Index (%)                  115                    106 
 

YELLOWSTONE

 Beartooth Lake           9360   22.7    12.8    177    20.8    11.6    179 
 Burnt Mtn                5880    3.6     2.3    157     8.7     7.5    116 
 Canyon                   7870   10.4     7.5    139    12.0     9.7    124 
 Cole Creek               7850    9.0     7.5    120     5.8     7.2     81 
 Evening Star             9200   23.9    14.4    166    25.3    16.4    154 
 Fisher Creek             9100   30.7    19.2    160    26.5    18.8    141 
 Northeast Entrance       7350    7.0     5.7    123    10.2     7.6    134 
 Parker Peak              9400   20.7    12.0    172    18.0    10.5    171 
 Sylvan Lake              8420   14.9    11.6    128    16.2    13.6    119 
 Thumb Divide             7980   10.9     8.4    130    11.9    11.0    108 
 Two Ocean Plateau        9240   23.6    15.8    149    17.7    15.8    112 
 White Mill               8700   23.6    13.4    176    17.2    14.0    123 
 Wolverine                7650   10.6     6.3    168    12.9     7.6    170 
                                                -----                  -----
                Basin Index (%)                  155                    134 
 

WIND RIVER

 Burroughs Creek          8750    9.3      -M       *   11.0      -M       *
 Castle Creek             8400    5.3      -M       *    6.6      -M       *
 Cold Springs             9630    5.8     4.2    138     6.1     5.8    105 
 Deer Park                9700    7.6     7.9     96     8.9    11.4     78 
 Hobbs Park              10100   10.9     7.5    145     9.0     7.2    125 
 Kirwin                   9550   12.0     5.3    226    10.6     6.8    156 
 Little Warm              9370   10.2     5.8    176    10.2     7.5    136 
 Owl Creek                8975    2.7     3.0     90     4.3     3.3    130 
 South Pass               9040    7.1     8.1     88     5.0    10.1     50 
 St. Lawrence Alt         8620    2.7     3.7     73     6.0     5.0    120 
 Togwotee Pass            9580   18.6    13.2    141    18.8    14.5    130 
 Townsend Creek           8700    4.7     4.6    102     5.9     6.7     88 
                                                -----                  -----
                Basin Index (%)                  130                    108 
 

BIGHORN BASIN

 Bald Mtn.                9380   11.8    10.1    117     8.0     9.8     82 
 Bear Trap Meadow         8200    4.7     3.1    152     5.8     4.9    118 
 Bone Springs Div         9350   10.0     9.1    110     7.5     8.8     85 
 Grave Springs            8550    4.2     4.6     91     3.4     6.0     57 
 Kirwin                   9550   12.0     5.3    226    10.6     6.8    156 
 Marquette                8760    3.5      -M       *    6.6      -M       *
 Middle Powder            7760    5.3     6.1     87     3.6     6.9     52 
 Owl Creek                8975    2.7     3.0     90     4.3     3.3    130 
 Powder River Pass        9480    9.1     5.9    154     7.7     7.2    107 
 Shell Creek              9580   11.9     8.6    138     8.3     8.0    104 
 Timber Creek             7950    2.2     2.8     79     1.7     4.3     40 
                                                -----                  -----
                Basin Index (%)                  126                     92 
 

SHOSHONE RIVER

 Blackwater               9780   21.7    13.1    166    19.1    12.2    157 
 Evening Star             9200   23.9    14.4    166    25.3    16.4    154 
 Marquette                8760    3.5      -M       *    6.6      -M       *
 Sylvan Road              7120    8.4     7.2    117    13.0    10.9    119 
 Younts Peak              8350     -M     8.8       *     -M     9.6       *
                                                -----                  -----
                Basin Index (%)                  156                    145 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.7     3.1    152     5.8     4.9    118 
 Cloud Peak Reservoir     9860    8.3     7.6    109     7.8     7.4    105 
 Grave Springs            8550    4.2     4.6     91     3.4     6.0     57 
 Hansen Sawmill           8360    4.1     3.7    111     5.4     4.7    115 
 Middle Powder            7760    5.3     6.1     87     3.6     6.9     52 
 Powder River Pass        9480    9.1     5.9    154     7.7     7.2    107 
 Soldier Park             8720    2.8      -M       *    5.6      -M       *
                                                -----                  -----
                Basin Index (%)                  115                     91 
 

TONGUE RIVER

 Big Goose                7990    3.8     4.4     86     4.3     6.0     72 
 Bone Springs Div         9350   10.0     9.1    110     7.5     8.8     85 
 Burgess Junction         7880    4.6     6.2     74     4.2     7.0     60 
 Dome Lake                8880    6.4     6.4    100     5.9     7.8     76 
 Little Goose             8870    4.7      -M       *    6.6      -M       *
 Sucker Creek             8880    5.2     6.6     79      -M     8.0       *
 Tie Creek                6870    1.9     3.1     61     5.0     6.7     75 
                                                -----                  -----
                Basin Index (%)                   89                     74 
 

BELLE FOURCHE

 Cole Canyon              5910    3.5     3.0    117     5.2     5.3     98 
                                                -----                  -----
                Basin Index (%)                  117                     98 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    4.3     4.1    105     6.4     7.2     89 
 North Rapid Creek        6130    4.6     3.8    121     4.9     5.8     84 
                                                -----                  -----
                Basin Index (%)                  113                     87 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   10.9    11.3     96    10.9    13.0     84 
 Blackhall Mtn            9820   14.5      -M       *   14.8      -M       *
 Columbine                9160    5.3    13.0     41    13.1    14.7     89 
 Divide Peak              8880    7.9    11.1     71    11.2    12.5     90 
 Joe Wright              10120    9.4    12.0     78    16.2    14.7    110 
 Laprele Creek            8375    3.8     5.2     73     5.2     7.0     74 
 Med Bow                 10500   22.4      -M       *   19.2      -M       *
 North French Creek      10130   15.8    14.5    109    16.1    15.3    105 
 Never Summer            10280    9.8    11.0     89     8.5      -M       *
 Old Battle              10000   13.7    16.5     83    13.4    20.4     66 
 Rawah                    9020    6.2     5.7    109     9.2     8.6    107 
 Sage Creek Basin         7850    5.5     7.5     73     6.9     8.8     78 
 Sand Lake               10050   15.1    15.0    101    12.6    13.8     91 
 South Brush Creek        8440    5.8     6.5     89     7.5     8.7     86 
 Tower                   10500   16.7    24.2     69    17.6    23.2     76 
 Webber Springs           9250    9.8    12.3     80    11.9    15.5     77 
 Willow Creek Pass        9540    7.5     6.6    114     8.1     7.6    107 
 Zirkel                   9340   11.1    16.3     68    16.3    16.9     96 
                                                -----                  -----
                Basin Index (%)                   82                     88 
 

SWEETWATER

 Deer Park                9700    7.6     7.9     96     8.9    11.4     78 
 Larsen Creek             9000    4.5     6.4     70     7.2      -M       *
 South Pass               9040    7.1     8.1     88     5.0    10.1     50 
                                                -----                  -----
                Basin Index (%)                   86                     65 
 

LOWER N. PLATTE

 Casper Mtn.              7900    4.8     6.9     70     3.8     8.4     45 
 Laprele Creek            8375    3.8     5.2     73     5.2     7.0     74 
 Reno Hill                8400    5.9     7.0     84     7.0     8.3     84 
 Windy Peak               7900    3.4     3.8     89     4.7     5.9     80 
                                                -----                  -----
                Basin Index (%)                   78                     70 
 

LARAMIE RIVER

 Brooklyn Lake           10240   13.1    11.2    117    14.0    11.7    120 
 Cinnabar Park            9574   13.4    11.9    113    15.9    14.5    110 
 Crow Creek               8330    1.5     5.4     28     6.8     6.1    111 
 Deadman Hill            10220   11.0     8.7    126    10.8     9.4    115 
 Rawah                    9020    6.2     5.7    109     9.2     8.6    107 
 Roach                    9700    7.9     9.2     86    10.4    10.8     96 
                                                -----                  -----
                Basin Index (%)                  102                    110 
 

S. PLATTE

 Black Mountain           8920    4.8      -M       *    7.4      -M       *
 Crow Creek               8330    1.5     5.4     28     6.8     6.1    111 
 Deadman Hill            10220   11.0     8.7    126    10.8     9.4    115 
                                                -----                  -----
                Basin Index (%)                   89                    114 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.0     6.1     49     5.9     8.9     66 
 Divide Peak              8880    7.9    11.1     71    11.2    12.5     90 
 Elk River                8700    7.7     9.8     79     9.2    11.6     79 
 Little Snake River       8915   10.4    12.9     81    15.6    18.7     83 
 Old Battle              10000   13.7    16.5     83    13.4    20.4     66 
 Sage Creek Basin         7850    5.5     7.5     73     6.9     8.8     78 
 Sandstone RS             8150    5.1     7.2     71     5.2    10.9     48 
 Whiskey Park             8950   11.3    14.7     77    14.1    16.1     88 
                                                -----                  -----
                Basin Index (%)                   75                     76 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    8.0     7.1    113     8.2     7.7    106 
 Blind Bull Sum           8650   17.4    12.7    137    11.1    11.7     95 
 East Rim Divide          7930    6.3     6.1    103     6.7     7.0     96 
 Elkhart Park G.S.        9400    7.0     6.9    101     7.0     7.8     90 
 Gros Ventre Summit       8750    9.5     7.7    123     8.8     7.5    117 
 Gunsight Pass            9820    9.1     7.7    118     9.5     8.1    117 
 Kendall R.S.             7740    8.5     6.8    125     9.3     8.4    111 
 Loomis Park              8240    9.1     8.5    107     9.9    10.2     97 
 New Fork Lake            8340    6.8     6.2    110     6.1     6.4     95 
 Pocket Creek             9360    6.2      -M       *    5.5      -M       *
 Snider Basin             8060    6.5     6.6     98     8.3     8.4     99 
 Spring Creek Divide      9000   13.9    12.6    110    13.8    14.0     99 
 Triple Peak              8500   14.5    11.7    124    16.5    14.5    114 
                                                -----                  -----
                Basin Index (%)                  116                    103 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    4.4      -M       *    5.7      -M       *
 Buck Pasture             9632    6.8      -M       *    7.5      -M       *
 EF Blacks Fork GS        9360    3.9      -M       *    4.3      -M       *
 Hams Fork                7840    4.8     6.3     76     5.3     6.7     79 
 Hewinta                  9500    4.7     5.1     92     6.8     7.9     86 
 Hickerson Park           9122    4.1     3.3    124     3.7     5.7     65 
 Hole-in-Rock             9168    3.6     3.7     97     4.2     5.4     78 
 Indian Creek             9425   11.7    13.3     88     8.9    12.7     70 
 Kelley R.S.              8180    7.1     7.9     90     8.3    10.5     79 
 Spirit Lk               10235    4.6      -M       *    5.4      -M       *
 Steel Creek Park        10158    8.0     7.6    105     8.0     9.0     89 
                                                -----                  -----
                Basin Index (%)                   93                     78 
 

UPPER BEAR RIVER

 Bear River RS            8777    5.0      -M       *    6.5      -M       *
 Bug Lake                 7987    8.8     9.1     97     9.8    11.3     87 
 Burts Miller Ranch       8000    3.2      -M       *    3.9      -M       *
 Chalk Creek #1           9171    8.4    12.0     70     9.1    14.2     64 
 Hayden Fork              9130    7.1     7.7     92     8.9    12.0     74 
 Kelley R.S.              8180    7.1     7.9     90     8.3    10.5     79 
 Lily Lake                9133    6.5     6.7     97     6.8     9.8     69 
 Monte Cristo             8932   11.6    14.0     83    11.5    14.9     77 
 Salt River Summit        7640    5.4     6.9     78     7.4     9.7     76 
                                                -----                  -----
                Basin Index (%)                   85                     75 

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


 -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.