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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 MONDAY: APRIL 25 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    7.8    10.8     72    21.1    22.1     95 
 Black Bear               8170   30.0    36.9     81    36.6    40.7     90 
 Blind Bull Sum           8650   26.1    24.3    107    17.5    20.7     85 
 Cottonwood Creek         7670   17.6    17.3    102    28.5    26.5    108 
 East Rim Divide          7930     .0     9.0      0    11.7    12.4     94 
 Grand Targhee            9260   41.8    43.1     97    34.1    33.5    102 
 Granite Creek            6770    6.7     9.5     71    18.6    20.6     90 
 Grassy Lake              7265   21.9    30.2     73    36.6    38.2     96 
 Gros Ventre Summit       8750    9.8    12.5     78    11.7    14.0     84 
 Gunsight Pass            9820   13.3    13.5     99    15.7    15.4    102 
 Lewis Lake Divide        7850   22.1    30.7     72    33.0    37.5     88 
 Phillips Bench           8200   19.6    25.4     77    27.5    29.8     92 
 Salt River Summit        7760    7.0     8.5     82    16.8    17.8     94 
 Snake River Station      6920    6.3    10.1     62    23.2    24.0     97 
 Spring Creek Divide      9000   25.1    23.7    106    24.7    25.4     97 
 Thumb Divide             7980    5.2    14.2     37    15.8    20.2     78 
 Togwotee Pass            9580   21.1    24.4     86    26.2    26.3    100 
 Two Ocean Plateau        9240   25.9    29.0     89    26.0    29.2     89 
 Willow Creek             8380   22.8    25.7     89    36.1    36.3     99 
 Younts Peak              8350    6.0    15.1     40    14.2    17.0     84 
                                                -----                  -----
                Basin Index (%)                   81                     94 
 

MADISON-GALLATIN

 Black Bear               8170   30.0    36.9     81    36.6    40.7     90 
 Canyon                   7870    6.2    11.7     53    13.6    17.4     78 
 Madison Plateau          7750   18.0    22.6     80    24.0    28.0     86 
 West Yellowstone         6700     .1     5.1      2    14.4    15.4     94 
 Whiskey Creek            6800    9.9    15.5     64    17.8    21.7     82 
                                                -----                  -----
                Basin Index (%)                   70                     86 
 

YELLOWSTONE

 Beartooth Lake           9360   18.6    23.6     79    19.3    21.2     91 
 Burnt Mtn                5880     .0      .0       *   12.6    14.9     85 
 Canyon                   7870    6.2    11.7     53    13.6    17.4     78 
 Cole Creek               7850   10.9    16.3     67    13.5    15.2     89 
 Evening Star             9200   24.5    24.5    100    30.0    29.4    102 
 Fisher Creek             9100   27.3    33.2     82    27.0    34.1     79 
 Northeast Entrance       7350     -M     5.1       *   12.1    13.3     91 
 Parker Peak              9400   19.8    21.8     91    22.5    19.3    117 
 Sylvan Lake              8420   13.4    20.3     66    25.1    24.2    104 
 Thumb Divide             7980    5.2    14.2     37    15.8    20.2     78 
 Two Ocean Plateau        9240   25.9    29.0     89    26.0    29.2     89 
 White Mill               8700   21.0    23.8     88    22.6    25.4     89 
 Wolverine                7650     .0     5.6      0    13.0    13.2     98 
                                                -----                  -----
                Basin Index (%)                   77                     91 
 

WIND RIVER

 Burroughs Creek          8750    5.1      -M       *   13.2      -M       *
 Castle Creek             8400     .0      -M       *    7.9      -M       *
 Cold Springs             9630    5.1     3.1    165    10.7    11.6     92 
 Deer Park                9700   16.5    16.3    101    19.9    22.7     88 
 Hobbs Park              10100   17.3    15.6    111    18.2    15.7    116 
 Kirwin                   9550   11.8    10.1    117    15.4    13.0    118 
 Little Warm              9370    7.4     9.5     78    12.1    14.5     83 
 Owl Creek                8975    1.1     2.7     41     7.0     7.3     96 
 South Pass               9040   13.8    15.2     91    14.5    19.4     75 
 St. Lawrence Alt         8620    3.2     4.9     65    11.2    10.6    106 
 Togwotee Pass            9580   21.1    24.4     86    26.2    26.3    100 
 Townsend Creek           8700    9.4     8.8    107    14.7    14.1    104 
                                                -----                  -----
                Basin Index (%)                   96                     97 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.5    20.4     81    14.1    18.7     75 
 Bear Trap Meadow         8200    2.9     2.0    145     8.4     9.9     85 
 Bone Springs Div         9350   13.5    16.4     82    13.5    17.3     78 
 Grave Springs            8550    7.6     9.2     83     8.4    12.2     69 
 Kirwin                   9550   11.8    10.1    117    15.4    13.0    118 
 Marquette                8760    8.0      -M       *   13.6      -M       *
 Middle Powder            7760   10.7    12.3     87     9.8    13.3     74 
 Owl Creek                8975    1.1     2.7     41     7.0     7.3     96 
 Powder River Pass        9480    7.4    10.2     73    10.4    14.2     73 
 Shell Creek              9580   13.3    15.8     84    11.9    15.3     78 
 Timber Creek             7950    4.8     3.7    130    13.1     9.0    146 
                                                -----                  -----
                Basin Index (%)                   87                     86 
 

SHOSHONE RIVER

 Blackwater               9780   23.3    24.4     95    26.3    22.5    117 
 Evening Star             9200   24.5    24.5    100    30.0    29.4    102 
 Marquette                8760    8.0      -M       *   13.6      -M       *
 Sylvan Road              7120     .0     8.3      0    16.2    17.9     91 
 Younts Peak              8350    6.0    15.1     40    14.2    17.0     84 
                                                -----                  -----
                Basin Index (%)                   74                    100 
 

POWDER RIVER

 Bear Trap Meadow         8200    2.9     2.0    145     8.4     9.9     85 
 Cloud Peak Reservoir     9860   12.9    16.3     79    16.4    15.6    105 
 Grave Springs            8550    7.6     9.2     83     8.4    12.2     69 
 Hansen Sawmill           8360    3.6     4.3     84     9.8    10.1     97 
 Middle Powder            7760   10.7    12.3     87     9.8    13.3     74 
 Powder River Pass        9480    7.4    10.2     73    10.4    14.2     73 
 Soldier Park             8720     .8      -M       *   10.0      -M       *
                                                -----                  -----
                Basin Index (%)                   83                     84 
 

TONGUE RIVER

 Big Goose                7990    9.5     9.1    104    12.7    13.4     95 
 Bone Springs Div         9350   13.5    16.4     82    13.5    17.3     78 
 Burgess Junction         7880   10.9    12.4     88    12.5    13.9     90 
 Dome Lake                8880   10.0    11.8     85    13.7    15.4     89 
 Little Goose             8870   10.8      -M       *   15.3      -M       *
 Sucker Creek             8880   10.7    12.7     84    14.4    16.4     88 
 Tie Creek                6870     .1     3.5      3    11.6    13.6     85 
                                                -----                  -----
                Basin Index (%)                   83                     87 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .8      0    10.2    10.9     94 
                                                -----                  -----
                Basin Index (%)                    0                     94 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     3.6      0    11.3    13.6     83 
 North Rapid Creek        6130     .0     3.5      0     9.1    11.6     78 
                                                -----                  -----
                Basin Index (%)                    0                     81 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.6    21.8    117    27.3    25.4    107 
 Blackhall Mtn            9820   33.8      -M       *   33.5      -M       *
 Columbine                9160   19.9    20.6     97    28.2    27.7    102 
 Divide Peak              8880   19.4    18.1    107    28.7    23.5    122 
 Joe Wright              10120     -M    23.2       *     -M    28.8       *
 Laprele Creek            8375    7.8     7.3    107    13.4    14.3     94 
 Med Bow                 10500   36.2      -M       *   35.5      -M       *
 North French Creek      10130   30.1    32.6     92    30.5    29.5    103 
 Never Summer            10280   22.1    21.1    105    19.5      -M       *
 Old Battle              10000   34.9    34.1    102    33.1    37.9     87 
 Rawah                    9020   12.0     8.0    150    20.8    16.6    125 
 Sage Creek Basin         7850   10.9     2.7    404    15.2    15.6     97 
 Sand Lake               10050   31.3    31.0    101    30.4    27.9    109 
 South Brush Creek        8440    7.8    10.0     78    16.7    17.0     98 
 Tower                   10500   42.5    49.3     86    41.5    43.3     96 
 Webber Springs           9250   22.2    21.9    101    29.3    29.0    101 
 Willow Creek Pass        9540   17.4    13.7    127    17.9    15.1    119 
 Zirkel                   9340   24.5    22.3    110    33.3    30.3    110 
                                                -----                  -----
                Basin Index (%)                  104                    104 
 

SWEETWATER

 Deer Park                9700   16.5    16.3    101    19.9    22.7     88 
 Larsen Creek             9000    5.6     9.8     57    15.1      -M       *
 South Pass               9040   13.8    15.2     91    14.5    19.4     75 
                                                -----                  -----
                Basin Index (%)                   87                     82 
 

LOWER N. PLATTE

 Casper Mtn.              7900   18.2    14.2    128    18.5    17.1    108 
 Laprele Creek            8375    7.8     7.3    107    13.4    14.3     94 
 Reno Hill                8400   16.8    13.8    122    21.6    17.9    121 
 Windy Peak               7900    7.1     6.1    116    12.2    12.3     99 
                                                -----                  -----
                Basin Index (%)                  121                    107 
 

LARAMIE RIVER

 Brooklyn Lake           10240   24.0    22.8    105    25.7    23.7    108 
 Cinnabar Park            9574   20.3    20.0    102    25.7    26.1     98 
 Crow Creek               8330    7.4      .0       *   17.1    12.8    134 
 Deadman Hill            10220   22.4    18.1    124    22.7    19.8    115 
 Rawah                    9020   12.0     8.0    150    20.8    16.6    125 
 Roach                    9700   20.5    16.8    122    24.9    21.4    116 
                                                -----                  -----
                Basin Index (%)                  124                    114 
 

S. PLATTE

 Black Mountain           8920   13.6      -M       *   19.8      -M       *
 Crow Creek               8330    7.4      .0       *   17.1    12.8    134 
 Deadman Hill            10220   22.4    18.1    124    22.7    19.8    115 
                                                -----                  -----
                Basin Index (%)                  165*                   122 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    4.5     1.9    237    18.0    16.5    109 
 Divide Peak              8880   19.4    18.1    107    28.7    23.5    122 
 Elk River                8700   12.0    14.6     82    20.5    21.9     94 
 Little Snake River       8915   23.3    23.3    100    36.1    31.7    114 
 Old Battle              10000   34.9    34.1    102    33.1    37.9     87 
 Sage Creek Basin         7850   10.9     2.7    404    15.2    15.6     97 
 Sandstone RS             8150    6.7     8.6     78    14.2    20.1     71 
 Whiskey Park             8950   27.4    25.6    107    31.8    30.4    105 
                                                -----                  -----
                Basin Index (%)                  108                    100 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   11.0    12.1     91    13.6    14.6     93 
 Blind Bull Sum           8650   26.1    24.3    107    17.5    20.7     85 
 East Rim Divide          7930     .0     9.0      0    11.7    12.4     94 
 Elkhart Park G.S.        9400    8.4    11.8     71    12.6    14.4     88 
 Gros Ventre Summit       8750    9.8    12.5     78    11.7    14.0     84 
 Gunsight Pass            9820   13.3    13.5     99    15.7    15.4    102 
 Kendall R.S.             7740     -M     6.6       *   12.3    15.0     82 
 Loomis Park              8240    8.3    11.9     70    17.3    18.3     95 
 New Fork Lake            8340    3.0     7.4     41    11.6    11.6    100 
 Pocket Creek             9360    8.2      -M       *   10.9      -M       *
 Snider Basin             8060    6.5    10.1     64    14.7    15.1     97 
 Spring Creek Divide      9000   25.1    23.7    106    24.7    25.4     97 
 Triple Peak              8500   19.1    19.0    101    28.3    27.0    105 
                                                -----                  -----
                Basin Index (%)                   84                     94 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    7.9      -M       *   13.7      -M       *
 Buck Pasture             9700   10.5      -M       *   18.8      -M       *
 EF Blacks Fork GS        9360    6.6      -M       *   12.9      -M       *
 Hams Fork                7840    4.5     5.0     90    11.6    12.6     92 
 Hewinta                  9519    7.4     6.9    107    15.6    15.5    101 
 Hickerson Park           9145    8.4     5.0    168    14.0    11.5    122 
 Hole-in-Rock             9150    3.5     5.0     70    14.0    11.0    127 
 Indian Creek             9425   20.2    23.7     85    19.6    24.2     81 
 Kelley R.S.              8180    9.9    11.9     83    16.7    19.5     86 
 Spirit Lk               10235   16.2      -M       *   19.9      -M       *
 Steel Creek Park        10200   18.4    16.5    112    21.1    18.4    115 
                                                -----                  -----
                Basin Index (%)                   98                    100 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   12.8      -M       *
 Bug Lake                 7950   13.0    16.2     80    20.6    20.9     99 
 Burts Miller Ranch       8000     .0      -M       *    6.6      -M       *
 Chalk Creek #1           8993   16.5    24.6     67    23.9    27.5     87 
 Hayden Fork              9212    5.7    10.7     53    20.8    22.9     91 
 Kelley R.S.              8180    9.9    11.9     83    16.7    19.5     86 
 Lily Lake                9156    8.7     9.9     88    15.0    18.8     80 
 Monte Cristo             8960   23.4    27.4     85    29.8    28.2    106 
 Salt River Summit        7760    7.0     8.5     82    16.8    17.8     94 
                                                -----                  -----
                Basin Index (%)                   77                     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.