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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 5:03p, 5/22/18
Temperature 63.8°F
Wind 11.0 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 MONDAY: MAY 9 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030     .0     5.0      0    21.5    23.6     91 
 Black Bear               8170   25.7    36.8     70    37.3    42.9     87 
 Blind Bull Sum           8650     -M    22.5       *     -M    22.1       *
 Cottonwood Creek         7670   12.4    13.1     95    31.3    28.6    109 
 East Rim Divide          7930     .0     6.2      0    13.6    13.4    101 
 Grand Targhee            9260   38.7    46.4     83    34.9    35.9     97 
 Granite Creek            6770     .0     5.9      0    20.6    22.0     94 
 Grassy Lake              7265   13.2    26.4     50    37.0    40.4     92 
 Gros Ventre Summit       8750    6.4     9.8     65    13.0    15.2     86 
 Gunsight Pass            9820   12.5    11.9    105    17.6    16.8    105 
 Lewis Lake Divide        7850     -M    29.5       *     -M    39.6       *
 Phillips Bench           8200   14.0    23.3     60    29.0    31.7     91 
 Salt River Summit        7760     -M     5.1       *     -M    19.0       *
 Snake River Station      6920     .0     3.1      0    23.5    25.5     92 
 Spring Creek Divide      9000   24.1    23.8    101    27.6    27.0    102 
 Thumb Divide             7980     .0     8.9      0    16.0    21.7     74 
 Togwotee Pass            9580   20.3    25.3     80    27.9    28.4     98 
 Two Ocean Plateau        9240   21.7    29.7     73    26.2    31.1     84 
 Willow Creek             8380   15.9    21.3     75    38.1    39.0     98 
 Younts Peak              8350     .0    15.5      0    15.9    18.4     86 
                                                -----                  -----
                Basin Index (%)                   66                     93 
 

MADISON-GALLATIN

 Black Bear               8170   25.7    36.8     70    37.3    42.9     87 
 Canyon                   7870     .0     7.7      0    14.7    18.8     78 
 Madison Plateau          7750   11.4    20.4     56    24.3    29.9     81 
 West Yellowstone         6700     .1      .0       *   14.5    16.6     87 
 Whiskey Creek            6800    4.0    11.1     36    18.2    23.0     79 
                                                -----                  -----
                Basin Index (%)                   54                     83 
 

YELLOWSTONE

 Beartooth Lake           9360   16.6    23.0     72    19.6    23.0     85 
 Burnt Mtn                5880     .0      .0       *   13.8    17.0     81 
 Canyon                   7870     .0     7.7      0    14.7    18.8     78 
 Cole Creek               7850    9.8    17.1     57    15.3    17.8     86 
 Evening Star             9200   20.4    25.3     81    31.2    31.7     98 
 Fisher Creek             9100   24.7    34.0     73    27.3    36.5     75 
 Northeast Entrance       7350     .0     1.0      0    12.3    14.5     85 
 Parker Peak              9400   15.2    21.8     70    23.0    21.1    109 
 Sylvan Lake              8420    7.2    18.1     40    25.3    26.2     97 
 Thumb Divide             7980     .0     8.9      0    16.0    21.7     74 
 Two Ocean Plateau        9240   21.7    29.7     73    26.2    31.1     84 
 White Mill               8700   16.9    24.6     69    22.8    27.4     83 
 Wolverine                7650     .0      .4      0*   13.1    14.5     90 
                                                -----                  -----
                Basin Index (%)                   63                     86 
 

WIND RIVER

 Burroughs Creek          8750    3.6      -M       *   16.6      -M       *
 Castle Creek             8400     .0      -M       *   10.3      -M       *
 Cold Springs             9630    8.1     1.7    476    16.2    13.3    122 
 Deer Park                9700   21.0    14.5    145    26.5    24.4    109 
 Hobbs Park              10100   23.9    15.9    150    26.2    17.7    148 
 Kirwin                   9550   13.3    10.9    122    18.6    14.7    127 
 Little Warm              9370    6.7     6.7    100    14.5    16.1     90 
 Owl Creek                8975    1.6      .6    267    11.6     8.5    136 
 South Pass               9040   18.1    12.2    148    21.4    21.2    101 
 St. Lawrence Alt         8620    5.4     1.4    386    17.9    12.3    146 
 Togwotee Pass            9580   20.3    25.3     80    27.9    28.4     98 
 Townsend Creek           8700   13.6     4.4    309    23.2    15.7    148 
                                                -----                  -----
                Basin Index (%)                  141                    118 
 

BIGHORN BASIN

 Bald Mtn.                9380   13.7    20.5     67    15.1    20.9     72 
 Bear Trap Meadow         8200     .0      .2      0*   10.2    11.5     89 
 Bone Springs Div         9350   11.5    16.5     70    14.2    19.5     73 
 Grave Springs            8550    6.5     7.9     82    10.7    14.0     76 
 Kirwin                   9550   13.3    10.9    122    18.6    14.7    127 
 Marquette                8760    5.0      -M       *   14.9      -M       *
 Middle Powder            7760    8.4    11.0     76    12.5    15.2     82 
 Owl Creek                8975    1.6      .6    267    11.6     8.5    136 
 Powder River Pass        9480    4.1     9.0     46    11.5    16.1     71 
 Shell Creek              9580   12.0    16.7     72    13.3    17.5     76 
 Timber Creek             7950    1.3     1.7     76    16.2    10.8    150 
                                                -----                  -----
                Basin Index (%)                   76                     90 
 

SHOSHONE RIVER

 Blackwater               9780   21.4    25.0     86    27.5    24.4    113 
 Evening Star             9200   20.4    25.3     81    31.2    31.7     98 
 Marquette                8760    5.0      -M       *   14.9      -M       *
 Sylvan Road              7120     .0     1.9      0    16.1    19.2     84 
 Younts Peak              8350     .0    15.5      0    15.9    18.4     86 
                                                -----                  -----
                Basin Index (%)                   62                     97 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .2      0*   10.2    11.5     89 
 Cloud Peak Reservoir     9860   12.4    16.7     74    17.8    18.0     99 
 Grave Springs            8550    6.5     7.9     82    10.7    14.0     76 
 Hansen Sawmill           8360     .0     1.4      0    11.5    11.8     97 
 Middle Powder            7760    8.4    11.0     76    12.5    15.2     82 
 Powder River Pass        9480    4.1     9.0     46    11.5    16.1     71 
 Soldier Park             8720     .0      -M       *   11.4      -M       *
                                                -----                  -----
                Basin Index (%)                   68                     86 
 

TONGUE RIVER

 Big Goose                7990    7.3    10.4     70    14.0    15.6     90 
 Bone Springs Div         9350   11.5    16.5     70    14.2    19.5     73 
 Burgess Junction         7880    9.0    11.5     78    13.6    15.9     86 
 Dome Lake                8880    8.7    11.2     78    15.1    17.8     85 
 Little Goose             8870    9.5      -M       *   16.6      -M       *
 Sucker Creek             8880    8.8    12.5     70    15.5    18.8     82 
 Tie Creek                6870     .0     1.7      0    12.4    15.7     79 
                                                -----                  -----
                Basin Index (%)                   71                     82 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   11.4    13.4     85 
                                                -----                  -----
                Basin Index (%)                     *                    85 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   12.2    15.3     80 
 North Rapid Creek        6130     .0      .0       *    9.7    13.2     73 
                                                -----                  -----
                Basin Index (%)                     *                    77 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   28.0    22.4    125    30.7    27.3    112 
 Blackhall Mtn            9820   36.8      -M       *   39.0      -M       *
 Columbine                9160   17.5    13.5    130    30.7    29.5    104 
 Divide Peak              8880   20.3    14.9    136    33.6    25.4    132 
 Joe Wright              10120     -M    23.0       *     -M    31.2       *
 Laprele Creek            8375    5.7     3.4    168    17.4    16.0    109 
 Med Bow                 10500   41.1      -M       *   41.1      -M       *
 North French Creek      10130   33.5    32.8    102    35.9    32.2    111 
 Never Summer            10280   23.3    22.1    105    21.9      -M       *
 Old Battle              10000     -M    36.6       *   38.2    40.7     94 
 Rawah                    9020   10.5     3.0    350    24.0    18.0    133 
 Sage Creek Basin         7850    8.0      .0       *   17.9    16.8    107 
 Sand Lake               10050   35.4    31.8    111    35.6    30.3    117 
 South Brush Creek        8440    7.0     5.8    121    21.0    18.9    111 
 Tower                   10500   47.7    51.4     93    46.5    46.2    101 
 Webber Springs           9250   23.2    19.8    117    33.5    31.0    108 
 Willow Creek Pass        9540   17.8    13.7    130    19.9    16.4    121 
 Zirkel                   9340     -M    19.9       *   37.1    32.2    115 
                                                -----                  -----
                Basin Index (%)                  118                    111 
 

SWEETWATER

 Deer Park                9700   21.0    14.5    145    26.5    24.4    109 
 Larsen Creek             9000    3.2     6.8     47    17.8      -M       *
 South Pass               9040   18.1    12.2    148    21.4    21.2    101 
                                                -----                  -----
                Basin Index (%)                  126                    105 
 

LOWER N. PLATTE

 Casper Mtn.              7900   17.1    11.7    146    22.4    19.3    116 
 Laprele Creek            8375    5.7     3.4    168    17.4    16.0    109 
 Reno Hill                8400   16.4    11.0    149    25.2    20.0    126 
 Windy Peak               7900    6.8     1.2    567    18.0    13.8    130 
                                                -----                  -----
                Basin Index (%)                  168                    120 
 

LARAMIE RIVER

 Brooklyn Lake           10240   26.2    21.7    121    30.8    25.8    119 
 Cinnabar Park            9574   23.3    17.8    131    30.6    28.2    109 
 Crow Creek               8330     -M      .0       *     -M    14.2       *
 Deadman Hill            10220   23.9    18.6    128    25.9    21.6    120 
 Rawah                    9020   10.5     3.0    350    24.0    18.0    133 
 Roach                    9700   22.6    16.2    140    29.4    23.2    127 
                                                -----                  -----
                Basin Index (%)                  138                    120 
 

S. PLATTE

 Black Mountain           8920   12.2      -M       *   23.0      -M       *
 Crow Creek               8330     -M      .0       *     -M    14.2       *
 Deadman Hill            10220   23.9    18.6    128    25.9    21.6    120 
                                                -----                  -----
                Basin Index (%)                  128*                   120*
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     -M      .0       *     -M    17.8       *
 Divide Peak              8880   20.3    14.9    136    33.6    25.4    132 
 Elk River                8700   11.9     8.6    138    23.4    23.6     99 
 Little Snake River       8915     -M    20.7       *   41.5    34.3    121 
 Old Battle              10000     -M    36.6       *   38.2    40.7     94 
 Sage Creek Basin         7850    8.0      .0       *   17.9    16.8    107 
 Sandstone RS             8150    6.9     2.2    314      -M    21.6       *
 Whiskey Park             8950   31.8    26.9    118    37.6    32.8    115 
                                                -----                  -----
                Basin Index (%)                  150                    111 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   10.4     8.6    121    16.6    16.0    104 
 Blind Bull Sum           8650     -M    22.5       *     -M    22.1       *
 East Rim Divide          7930     .0     6.2      0    13.6    13.4    101 
 Elkhart Park G.S.        9400    7.3     9.7     75    14.9    15.8     94 
 Gros Ventre Summit       8750    6.4     9.8     65    13.0    15.2     86 
 Gunsight Pass            9820   12.5    11.9    105    17.6    16.8    105 
 Kendall R.S.             7740     .0      .0       *   14.8    16.1     92 
 Loomis Park              8240    3.8     7.6     50    19.1    19.7     97 
 New Fork Lake            8340     .3     3.0     10    14.0    12.7    110 
 Pocket Creek             9360    8.9      -M       *   13.7      -M       *
 Snider Basin             8060     .1     7.5      1    17.5    16.1    109 
 Spring Creek Divide      9000   24.1    23.8    101    27.6    27.0    102 
 Triple Peak              8500   14.6    15.1     97    30.7    29.0    106 
                                                -----                  -----
                Basin Index (%)                   77                    101 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870     -M      -M       *     -M      -M       *
 Buck Pasture             9700     -M      -M       *     -M      -M       *
 EF Blacks Fork GS        9360     -M      -M       *     -M      -M       *
 Hams Fork                7840     .0      .2      0*   14.3    13.7    104 
 Hewinta                  9519     -M     2.4       *     -M    17.0       *
 Hickerson Park           9145    9.2      .5   1840*   18.6    12.7    146 
 Hole-in-Rock             9150    3.0      .3   1000*   17.6    12.2    144 
 Indian Creek             9425   19.0    21.0     90    22.6    25.9     87 
 Kelley R.S.              8180    5.9     8.6     69    19.9    20.9     95 
 Spirit Lk               10235   20.8      -M       *   25.6      -M       *
 Steel Creek Park        10200   21.4    17.8    120    25.4    20.0    127 
                                                -----                  -----
                Basin Index (%)                  121*                   112 
 

UPPER BEAR RIVER

 Bear River RS            8777     .9      -M       *   16.2      -M       *
 Bug Lake                 7950    8.4    12.4     68    22.5    22.4    100 
 Burts Miller Ranch       8000     .3      -M       *    8.4      -M       *
 Chalk Creek #1           8993   15.6    21.9     71    27.0    29.6     91 
 Hayden Fork              9212    3.9     6.3     62    24.3    24.7     98 
 Kelley R.S.              8180    5.9     8.6     69    19.9    20.9     95 
 Lily Lake                9156    8.6     6.2    139    18.9    20.4     93 
 Monte Cristo             8960   22.0    22.0    100    32.2    30.4    106 
 Salt River Summit        7760     -M     5.1       *     -M    19.0       *
                                                -----                  -----
                Basin Index (%)                   83                     98 

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


 -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.