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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 FRIDAY: MAY 6 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    1.2     6.6     18    21.3    23.3     91 
 Black Bear               8170   27.4    37.1     74    37.2    42.5     88 
 Blind Bull Sum           8650   25.2    22.7    111    17.8    21.8     82 
 Cottonwood Creek         7670   14.0    13.7    102    29.0    28.1    103 
 East Rim Divide          7930     .0     7.1      0    12.6    13.2     95 
 Grand Targhee            9260   40.9    46.2     89    34.5    35.6     97 
 Granite Creek            6770     .1     7.1      1    19.5    21.8     89 
 Grassy Lake              7265   15.9    27.3     58    36.9    39.9     92 
 Gros Ventre Summit       8750    6.9    10.5     66    12.0    15.0     80 
 Gunsight Pass            9820   12.1    11.7    103    16.4    16.4    100 
 Lewis Lake Divide        7850   16.5    29.4     56    33.5    39.2     85 
 Phillips Bench           8200   15.5    23.9     65    27.9    31.3     89 
 Salt River Summit        7760    1.8     6.7     27    17.4    18.7     93 
 Snake River Station      6920     .0     4.6      0    23.4    25.2     93 
 Spring Creek Divide      9000   23.0    24.1     95    25.4    26.7     95 
 Thumb Divide             7980     .0    10.0      0    16.0    21.4     75 
 Togwotee Pass            9580   20.6    24.9     83    27.0    28.0     96 
 Two Ocean Plateau        9240   24.2    29.8     81    26.2    30.7     85 
 Willow Creek             8380   17.9    21.8     82    36.5    38.5     95 
 Younts Peak              8350     .7    15.7      4    15.4    18.1     85 
                                                -----                  -----
                Basin Index (%)                   69                     91 
 

MADISON-GALLATIN

 Black Bear               8170   27.4    37.1     74    37.2    42.5     88 
 Canyon                   7870    2.1     8.5     25    14.3    18.4     78 
 Madison Plateau          7750   13.3    20.7     64    24.4    29.5     83 
 West Yellowstone         6700     .0      .0       *   14.6    16.3     90 
 Whiskey Creek            6800    5.8    12.4     47    18.0    22.7     79 
                                                -----                  -----
                Basin Index (%)                   62                     84 
 

YELLOWSTONE

 Beartooth Lake           9360   17.6    22.8     77    19.6    22.4     88 
 Burnt Mtn                5880     .0      .0       *   13.8    16.4     84 
 Canyon                   7870    2.1     8.5     25    14.3    18.4     78 
 Cole Creek               7850   10.9    16.9     64      -M    16.9       *
 Evening Star             9200   22.5    25.0     90    30.9    31.1     99 
 Fisher Creek             9100   25.1    33.2     76    27.4    35.8     77 
 Northeast Entrance       7350     .0     1.0      0    12.3    14.1     87 
 Parker Peak              9400   17.1    21.5     80    22.9    20.6    111 
 Sylvan Lake              8420    9.5    18.5     51    25.2    25.6     98 
 Thumb Divide             7980     .0    10.0      0    16.0    21.4     75 
 Two Ocean Plateau        9240   24.2    29.8     81    26.2    30.7     85 
 White Mill               8700   18.6    24.1     77    22.8    26.8     85 
 Wolverine                7650     .0      .6      0*   12.8    14.1     91 
                                                -----                  -----
                Basin Index (%)                   70                     88 
 

WIND RIVER

 Burroughs Creek          8750    4.3      -M       *   15.2      -M       *
 Castle Creek             8400     .0      -M       *    9.0      -M       *
 Cold Springs             9630    5.8     1.5    387    13.1    13.0    101 
 Deer Park                9700   18.2    14.9    122    23.1    24.1     96 
 Hobbs Park              10100   19.7    15.9    124    21.8    17.3    126 
 Kirwin                   9550   11.7    10.7    109    16.5    14.4    115 
 Little Warm              9370    5.9     7.5     79    12.9    15.8     82 
 Owl Creek                8975     .8      .6    133     8.9     8.3    107 
 South Pass               9040   15.7    13.4    117    17.8    20.9     85 
 St. Lawrence Alt         8620    3.9     1.6    244    13.6    12.0    113 
 Togwotee Pass            9580   20.6    24.9     83    27.0    28.0     96 
 Townsend Creek           8700   11.2     5.7    196    18.7    15.4    121 
                                                -----                  -----
                Basin Index (%)                  117                    102 
 

BIGHORN BASIN

 Bald Mtn.                9380   15.1    20.4     74    15.1    20.2     75 
 Bear Trap Meadow         8200     .6      .2    300*    9.9    11.1     89 
 Bone Springs Div         9350   12.7    16.3     78    14.2    18.8     76 
 Grave Springs            8550    8.1     8.8     92    10.3    13.5     76 
 Kirwin                   9550   11.7    10.7    109    16.5    14.4    115 
 Marquette                8760    6.7      -M       *   13.9      -M       *
 Middle Powder            7760   11.2    11.2    100    12.1    14.7     82 
 Owl Creek                8975     .8      .6    133     8.9     8.3    107 
 Powder River Pass        9480    5.9     9.1     65    11.5    15.6     74 
 Shell Creek              9580   13.1    16.3     80    13.1    16.8     78 
 Timber Creek             7950    2.8     2.1    133    14.2    10.6    134 
                                                -----                  -----
                Basin Index (%)                   86                     87 
 

SHOSHONE RIVER

 Blackwater               9780   21.1    25.7     82    27.1    24.1    112 
 Evening Star             9200   22.5    25.0     90    30.9    31.1     99 
 Marquette                8760    6.7      -M       *   13.9      -M       *
 Sylvan Road              7120     .0     3.3      0    16.1    18.9     85 
 Younts Peak              8350     .7    15.7      4    15.4    18.1     85 
                                                -----                  -----
                Basin Index (%)                   64                     97 
 

POWDER RIVER

 Bear Trap Meadow         8200     .6      .2    300*    9.9    11.1     89 
 Cloud Peak Reservoir     9860   12.8    16.4     78    17.7    17.3    102 
 Grave Springs            8550    8.1     8.8     92    10.3    13.5     76 
 Hansen Sawmill           8360    1.4     1.6     88    10.9    11.3     96 
 Middle Powder            7760   11.2    11.2    100    12.1    14.7     82 
 Powder River Pass        9480    5.9     9.1     65    11.5    15.6     74 
 Soldier Park             8720     .1      -M       *   11.0      -M       *
                                                -----                  -----
                Basin Index (%)                   85                     87 
 

TONGUE RIVER

 Big Goose                7990    8.5     9.9     86    14.0    14.9     94 
 Bone Springs Div         9350   12.7    16.3     78    14.2    18.8     76 
 Burgess Junction         7880   10.1    11.6     87    13.6    15.3     89 
 Dome Lake                8880    9.6    11.3     85    14.9    17.0     88 
 Little Goose             8870   10.5      -M       *   16.4      -M       *
 Sucker Creek             8880    9.7    12.0     81    15.6    18.0     87 
 Tie Creek                6870     .0     2.2      0    12.3    15.0     82 
                                                -----                  -----
                Basin Index (%)                   80                     85 
 

BELLE FOURCHE

 Cole Canyon              5910     .2      .0       *   11.3    12.8     88 
                                                -----                  -----
                Basin Index (%)                     *                    88 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   12.0    14.9     81 
 North Rapid Creek        6130     .0      .0       *     -M    12.8       *
                                                -----                  -----
                Basin Index (%)                     *                    81 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   27.2    22.3    122    29.2    26.8    109 
 Blackhall Mtn            9820   34.8      -M       *   36.3      -M       *
 Columbine                9160   17.7    15.8    112    29.7    29.2    102 
 Divide Peak              8880   18.8    16.8    112    30.4    24.9    122 
 Joe Wright              10120     -M    22.8       *     -M    30.7       *
 Laprele Creek            8375    7.2     4.9    147    15.8    15.5    102 
 Med Bow                 10500   37.9      -M       *   38.0      -M       *
 North French Creek      10130   31.1    32.8     95    33.1    31.5    105 
 Never Summer            10280   22.2    22.0    101    20.8      -M       *
 Old Battle              10000   36.6    35.3    104    36.4    40.0     91 
 Rawah                    9020    9.9     4.2    236    22.4    17.7    127 
 Sage Creek Basin         7850    8.7      .4   2175*   15.9    16.6     96 
 Sand Lake               10050   33.7    31.7    106    33.4    29.7    112 
 South Brush Creek        8440    6.8     7.1     96    19.0    18.4    103 
 Tower                   10500   45.6    51.2     89    45.0    45.7     98 
 Webber Springs           9250   22.4    20.7    108    31.3    30.5    103 
 Willow Creek Pass        9540   17.4    14.4    121    19.0    16.1    118 
 Zirkel                   9340   24.1    20.5    118    35.4    31.7    112 
                                                -----                  -----
                Basin Index (%)                  110                    106 
 

SWEETWATER

 Deer Park                9700   18.2    14.9    122    23.1    24.1     96 
 Larsen Creek             9000    2.7     7.7     35    16.1      -M       *
 South Pass               9040   15.7    13.4    117    17.8    20.9     85 
                                                -----                  -----
                Basin Index (%)                  102                     91 
 

LOWER N. PLATTE

 Casper Mtn.              7900   18.6    12.0    155    20.4    18.8    109 
 Laprele Creek            8375    7.2     4.9    147    15.8    15.5    102 
 Reno Hill                8400   17.4    11.9    146    24.4    19.5    125 
 Windy Peak               7900    8.3     2.4    346    15.9    13.4    119 
                                                -----                  -----
                Basin Index (%)                  165                    114 
 

LARAMIE RIVER

 Brooklyn Lake           10240   25.0    22.5    111    28.8    25.3    114 
 Cinnabar Park            9574   21.7    18.2    119    28.3    27.7    102 
 Crow Creek               8330     -M      .0       *     -M    13.9       *
 Deadman Hill            10220   23.1    19.0    122    24.4    21.2    115 
 Rawah                    9020    9.9     4.2    236    22.4    17.7    127 
 Roach                    9700   21.2    16.8    126    27.4    22.8    120 
                                                -----                  -----
                Basin Index (%)                  125                    114 
 

S. PLATTE

 Black Mountain           8920   12.7      -M       *   21.8      -M       *
 Crow Creek               8330     -M      .0       *     -M    13.9       *
 Deadman Hill            10220   23.1    19.0    122    24.4    21.2    115 
                                                -----                  -----
                Basin Index (%)                  122*                   115*
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .1      .0       *   19.9    17.5    114 
 Divide Peak              8880   18.8    16.8    112    30.4    24.9    122 
 Elk River                8700   11.1    10.7    104    22.2    23.3     95 
 Little Snake River       8915   23.1    21.2    109    38.2    33.5    114 
 Old Battle              10000   36.6    35.3    104    36.4    40.0     91 
 Sage Creek Basin         7850    8.7      .4   2175*   15.9    16.6     96 
 Sandstone RS             8150    4.9     3.6    136    16.0    21.2     75 
 Whiskey Park             8950   28.0    27.1    103    34.3    32.2    107 
                                                -----                  -----
                Basin Index (%)                  114                    102 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    9.4     8.8    107    14.7    15.6     94 
 Blind Bull Sum           8650   25.2    22.7    111    17.8    21.8     82 
 East Rim Divide          7930     .0     7.1      0    12.6    13.2     95 
 Elkhart Park G.S.        9400    7.2    10.1     71    13.5    15.4     88 
 Gros Ventre Summit       8750    6.9    10.5     66    12.0    15.0     80 
 Gunsight Pass            9820   12.1    11.7    103    16.4    16.4    100 
 Kendall R.S.             7740     -M     1.4       *   13.0    15.8     82 
 Loomis Park              8240    4.4     8.9     49    17.9    19.3     93 
 New Fork Lake            8340     .1     4.5      2    12.5    12.5    100 
 Pocket Creek             9360    7.9      -M       *   12.0      -M       *
 Snider Basin             8060     .5     8.0      6    15.1    15.9     95 
 Spring Creek Divide      9000   23.0    24.1     95    25.4    26.7     95 
 Triple Peak              8500   15.2    15.7     97    29.0    28.5    102 
                                                -----                  -----
                Basin Index (%)                   79                     93 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    5.3      -M       *   14.8      -M       *
 Buck Pasture             9700   10.0      -M       *   20.2      -M       *
 EF Blacks Fork GS        9360    5.3      -M       *   14.4      -M       *
 Hams Fork                7840     .0      .7      0*   12.2    13.4     91 
 Hewinta                  9519    6.7     3.7    181    16.8    16.7    101 
 Hickerson Park           9145    7.9     2.2    359    16.2    12.4    131 
 Hole-in-Rock             9150    2.5     1.3    192    15.8    12.0    132 
 Indian Creek             9425   17.7    21.5     82    20.6    25.5     81 
 Kelley R.S.              8180    6.6     9.5     69    17.3    20.6     84 
 Spirit Lk               10235   19.1      -M       *   23.1      -M       *
 Steel Creek Park        10200   19.1    17.5    109    22.9    19.7    116 
                                                -----                  -----
                Basin Index (%)                  107                    101 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   14.2      -M       *
 Bug Lake                 7950    9.6    13.1     73    21.1    22.2     95 
 Burts Miller Ranch       8000     .0      -M       *    7.2      -M       *
 Chalk Creek #1           8993   14.8    22.8     65    25.2    29.2     86 
 Hayden Fork              9212    3.7     7.6     49    22.8    24.4     93 
 Kelley R.S.              8180    6.6     9.5     69    17.3    20.6     84 
 Lily Lake                9156    7.6     8.6     88    16.7    20.1     83 
 Monte Cristo             8960   22.3    24.0     93    31.3    30.0    104 
 Salt River Summit        7760    1.8     6.7     27    17.4    18.7     93 
                                                -----                  -----
                Basin Index (%)                   72                     92 

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


 -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.