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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 SUNDAY: APRIL 17 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   12.1    12.5     97    20.9    21.5     97 
 Black Bear               8170   30.5    36.8     83    35.5    39.3     90 
 Blind Bull Sum           8650   25.2    23.9    105    17.1    20.0     86 
 Cottonwood Creek         7670   19.6    19.3    102    27.4    25.3    108 
 East Rim Divide          7930    4.6     9.7     47    11.3    12.0     94 
 Grand Targhee            9260   42.9    41.5    103    33.1    32.3    102 
 Granite Creek            6770   10.4    11.7     89    18.2    20.1     91 
 Grassy Lake              7265   27.2    31.6     86    35.9    36.9     97 
 Gros Ventre Summit       8750   11.3    13.1     86    11.5    13.5     85 
 Gunsight Pass            9820   13.7    13.4    102    15.1    14.6    103 
 Lewis Lake Divide        7850   26.5    30.2     88    32.8    36.4     90 
 Phillips Bench           8200   21.9    25.9     85    27.1    28.8     94 
 Salt River Summit        7760   10.2    10.6     96    16.2    17.1     95 
 Snake River Station      6920   12.0    12.1     99    23.3    23.2    100 
 Spring Creek Divide      9000   25.8    23.4    110    24.3    24.4    100 
 Thumb Divide             7980    9.7    14.4     67    15.6    19.3     81 
 Togwotee Pass            9580   21.6    23.3     93    25.5    25.2    101 
 Two Ocean Plateau        9240   26.8    27.6     97    25.7    28.1     91 
 Willow Creek             8380   25.8    26.7     97    34.3    34.6     99 
 Younts Peak              8350   10.2    14.9     68    13.7    16.4     84 
                                                -----                  -----
                Basin Index (%)                   92                     95 
 

MADISON-GALLATIN

 Black Bear               8170   30.5    36.8     83    35.5    39.3     90 
 Canyon                   7870    9.4    12.4     76    13.5    16.8     80 
 Madison Plateau          7750   20.9    22.7     92    23.7    27.1     87 
 West Yellowstone         6700    5.3     8.1     65    14.2    14.8     96 
 Whiskey Creek            6800   12.1    14.9     81    17.6    20.9     84 
                                                -----                  -----
                Basin Index (%)                   82                     88 
 

YELLOWSTONE

 Beartooth Lake           9360   17.6    22.8     77    18.2    20.4     89 
 Burnt Mtn                5880     .0      .0       *   11.0    13.7     80 
 Canyon                   7870    9.4    12.4     76    13.5    16.8     80 
 Cole Creek               7850   10.5    15.9     66      -M    14.2       *
 Evening Star             9200   24.9    25.0    100    28.8    28.3    102 
 Fisher Creek             9100   28.2    32.1     88    26.7    32.9     81 
 Northeast Entrance       7350    3.0     7.6     39    11.7    12.7     92 
 Parker Peak              9400   20.8    20.7    100    21.1    18.4    115 
 Sylvan Lake              8420   15.6    20.2     77    24.2    23.2    104 
 Thumb Divide             7980    9.7    14.4     67    15.6    19.3     81 
 Two Ocean Plateau        9240   26.8    27.6     97    25.7    28.1     91 
 White Mill               8700   22.3    23.6     94    22.1    24.6     90 
 Wolverine                7650    4.7     8.1     58    11.8    12.6     94 
                                                -----                  -----
                Basin Index (%)                   84                     92 
 

WIND RIVER

 Burroughs Creek          8750    7.7      -M       *   12.5      -M       *
 Castle Creek             8400     .0      -M       *    6.5      -M       *
 Cold Springs             9630    7.1     5.4    131    10.0    10.6     94 
 Deer Park                9700   15.9    16.0     99    18.1    21.0     86 
 Hobbs Park              10100   15.5    14.8    105    15.7    14.4    109 
 Kirwin                   9550    9.7    10.0     97    12.7    12.2    104 
 Little Warm              9370    8.8    10.2     86    11.8    13.6     87 
 Owl Creek                8975    1.8     4.7     38     5.4     6.6     82 
 South Pass               9040   13.2    15.7     84    13.2    18.2     73 
 St. Lawrence Alt         8620    4.0     6.0     67     9.6     9.6    100 
 Togwotee Pass            9580   21.6    23.3     93    25.5    25.2    101 
 Townsend Creek           8700    9.4     9.8     96    12.8    12.9     99 
                                                -----                  -----
                Basin Index (%)                   92                     93 
 

BIGHORN BASIN

 Bald Mtn.                9380   15.1    19.5     77    12.2    17.9     68 
 Bear Trap Meadow         8200    3.6     4.0     90     6.6     9.2     72 
 Bone Springs Div         9350   12.0    16.4     73    11.1    16.4     68 
 Grave Springs            8550    6.2     9.6     65     6.6    11.3     58 
 Kirwin                   9550    9.7    10.0     97    12.7    12.2    104 
 Marquette                8760    6.2      -M       *   11.3      -M       *
 Middle Powder            7760    8.8    12.5     70     7.8    12.5     62 
 Owl Creek                8975    1.8     4.7     38     5.4     6.6     82 
 Powder River Pass        9480    7.2    10.1     71     8.9    13.4     66 
 Shell Creek              9580   11.9    15.3     78    10.6    14.5     73 
 Timber Creek             7950    4.5     5.1     88    10.9     8.1    135 
                                                -----                  -----
                Basin Index (%)                   75                     76 
 

SHOSHONE RIVER

 Blackwater               9780   22.7    23.7     96    25.2    21.5    117 
 Evening Star             9200   24.9    25.0    100    28.8    28.3    102 
 Marquette                8760    6.2      -M       *   11.3      -M       *
 Sylvan Road              7120     .2    10.2      2    16.1    17.2     94 
 Younts Peak              8350   10.2    14.9     68    13.7    16.4     84 
                                                -----                  -----
                Basin Index (%)                   79                    100 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.6     4.0     90     6.6     9.2     72 
 Cloud Peak Reservoir     9860   10.3    15.5     66    12.5    14.4     87 
 Grave Springs            8550    6.2     9.6     65     6.6    11.3     58 
 Hansen Sawmill           8360    4.4     5.4     81     8.1     9.3     87 
 Middle Powder            7760    8.8    12.5     70     7.8    12.5     62 
 Powder River Pass        9480    7.2    10.1     71     8.9    13.4     66 
 Soldier Park             8720     .4      -M       *    7.8      -M       *
                                                -----                  -----
                Basin Index (%)                   71                     72 
 

TONGUE RIVER

 Big Goose                7990    6.2     9.6     65     8.4    12.2     69 
 Bone Springs Div         9350   12.0    16.4     73    11.1    16.4     68 
 Burgess Junction         7880    8.4    12.2     69     9.3    13.1     71 
 Dome Lake                8880    7.4    11.9     62     9.6    14.5     66 
 Little Goose             8870    7.2      -M       *   10.5      -M       *
 Sucker Creek             8880    7.8    12.7     61    10.2    15.4     66 
 Tie Creek                6870     .0     4.5      0     8.8    12.4     71 
                                                -----                  -----
                Basin Index (%)                   62                     68 
 

BELLE FOURCHE

 Cole Canyon              5910     .1     2.6      4     9.5    10.1     94 
                                                -----                  -----
                Basin Index (%)                    4                     94 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .1     4.6      2    11.0    12.5     88 
 North Rapid Creek        6130     .0     4.8      0     8.6    10.5     82 
                                                -----                  -----
                Basin Index (%)                    1                     85 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.0    21.5    116    26.3    23.9    110 
 Blackhall Mtn            9820   32.3      -M       *   31.9      -M       *
 Columbine                9160   21.2    21.2    100    27.0    26.6    102 
 Divide Peak              8880   17.9    19.6     91    25.2    22.4    112 
 Joe Wright              10120   19.2    22.1     87    28.3    27.2    104 
 Laprele Creek            8375    7.6     8.8     86    11.6    13.3     87 
 Med Bow                 10500   34.7      -M       *   32.4      -M       *
 North French Creek      10130   26.9    32.0     84    27.5    28.0     98 
 Never Summer            10280   21.7    20.6    105    18.9      -M       *
 Old Battle              10000   31.9    32.3     99    30.0    36.4     82 
 Rawah                    9020   12.8     9.2    139    20.2    15.3    132 
 Sage Creek Basin         7850   11.1     7.6    146    13.6    15.0     91 
 Sand Lake               10050   28.9    30.4     95    27.9    26.2    106 
 South Brush Creek        8440    8.8    10.3     85    15.3    16.1     95 
 Tower                   10500   39.9    47.5     84    39.3    41.4     95 
 Webber Springs           9250   21.4    22.8     94    27.2    27.9     97 
 Willow Creek Pass        9540   17.2    12.7    135    17.4    14.1    123 
 Zirkel                   9340   25.3    23.2    109    31.9    29.5    108 
                                                -----                  -----
                Basin Index (%)                   99                    101 
 

SWEETWATER

 Deer Park                9700   15.9    16.0     99    18.1    21.0     86 
 Larsen Creek             9000    6.7    10.6     63    13.6      -M       *
 South Pass               9040   13.2    15.7     84    13.2    18.2     73 
                                                -----                  -----
                Basin Index (%)                   85                     80 
 

LOWER N. PLATTE

 Casper Mtn.              7900   15.7    14.4    109    15.4    16.2     95 
 Laprele Creek            8375    7.6     8.8     86    11.6    13.3     87 
 Reno Hill                8400   15.0    14.1    106    18.7    16.6    113 
 Windy Peak               7900    7.7     7.1    108    11.4    11.3    101 
                                                -----                  -----
                Basin Index (%)                  104                     99 
 

LARAMIE RIVER

 Brooklyn Lake           10240   23.5    22.1    106    24.5    22.3    110 
 Cinnabar Park            9574   19.2    20.7     93    23.9    25.0     96 
 Crow Creek               8330    6.6     2.3    287    15.8    11.7    135 
 Deadman Hill            10220   21.9    16.5    133    21.6    18.4    117 
 Rawah                    9020   12.8     9.2    139    20.2    15.3    132 
 Roach                    9700   19.0    16.5    115    22.8    20.2    113 
                                                -----                  -----
                Basin Index (%)                  118                    114 
 

S. PLATTE

 Black Mountain           8920   13.9      -M       *   19.0      -M       *
 Crow Creek               8330    6.6     2.3    287    15.8    11.7    135 
 Deadman Hill            10220   21.9    16.5    133    21.6    18.4    117 
                                                -----                  -----
                Basin Index (%)                  152                    124 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    6.6     5.8    114    16.9    15.8    107 
 Divide Peak              8880   17.9    19.6     91    25.2    22.4    112 
 Elk River                8700   13.0    16.5     79    19.6    20.9     94 
 Little Snake River       8915   22.0    25.3     87    33.3    30.9    108 
 Old Battle              10000   31.9    32.3     99    30.0    36.4     82 
 Sage Creek Basin         7850   11.1     7.6    146    13.6    15.0     91 
 Sandstone RS             8150    7.8    11.1     70    13.1    19.1     69 
 Whiskey Park             8950   26.0    26.5     98    29.3    29.1    101 
                                                -----                  -----
                Basin Index (%)                   94                     95 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   10.4    12.8     81    12.3    13.8     89 
 Blind Bull Sum           8650   25.2    23.9    105    17.1    20.0     86 
 East Rim Divide          7930    4.6     9.7     47    11.3    12.0     94 
 Elkhart Park G.S.        9400    8.8    12.0     73    11.8    13.8     86 
 Gros Ventre Summit       8750   11.3    13.1     86    11.5    13.5     85 
 Gunsight Pass            9820   13.7    13.4    102    15.1    14.6    103 
 Kendall R.S.             7740     -M     9.3       *   12.0    14.6     82 
 Loomis Park              8240   10.9    13.3     82    16.8    17.7     95 
 New Fork Lake            8340    5.5     9.3     59    11.3    11.1    102 
 Pocket Creek             9360    7.5      -M       *   10.0      -M       *
 Snider Basin             8060    9.8    11.3     87    14.3    14.6     98 
 Spring Creek Divide      9000   25.8    23.4    110    24.3    24.4    100 
 Triple Peak              8500   22.7    19.3    118    28.0    26.0    108 
                                                -----                  -----
                Basin Index (%)                   92                     95 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    9.4      -M       *   12.8      -M       *
 Buck Pasture             9700   11.4      -M       *   17.8      -M       *
 EF Blacks Fork GS        9360    7.7      -M       *   11.5      -M       *
 Hams Fork                7840    8.4     7.8    108    11.3    11.8     96 
 Hewinta                  9519    7.3     9.1     80    14.4    14.6     99 
 Hickerson Park           9145    9.2     6.1    151    12.8    10.8    119 
 Hole-in-Rock             9150    5.9     6.4     92    13.0    10.3    126 
 Indian Creek             9425   22.4    23.5     95    19.3    23.2     83 
 Kelley R.S.              8180   12.2    13.4     91    16.2    18.6     87 
 Spirit Lk               10235   15.1      -M       *   18.4      -M       *
 Steel Creek Park        10200   17.3    16.1    107    19.7    17.4    113 
                                                -----                  -----
                Basin Index (%)                  100                    100 
 

UPPER BEAR RIVER

 Bear River RS            8777    1.3      -M       *   12.3      -M       *
 Bug Lake                 7950   16.3    18.4     89    20.3    20.0    102 
 Burts Miller Ranch       8000     .1      -M       *    6.3      -M       *
 Chalk Creek #1           8993   18.1    24.9     73    23.3    26.3     89 
 Hayden Fork              9212    8.6    13.0     66    19.8    22.0     90 
 Kelley R.S.              8180   12.2    13.4     91    16.2    18.6     87 
 Lily Lake                9156   10.0    11.7     85    14.4    18.0     80 
 Monte Cristo             8960   26.0    27.6     94    29.3    26.9    109 
 Salt River Summit        7760   10.2    10.6     96    16.2    17.1     95 
                                                -----                  -----
                Basin Index (%)                   85                     94 

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


 -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.