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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 9 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   23.9    15.1    158    39.6    20.8    190 
 Black Bear               8170   46.1    36.9    125    53.7    38.0    141 
 Blind Bull Sum           8650   43.8    23.4    187      -M    19.4       *
 Cottonwood Creek         7670   28.2    20.9    135    38.7    24.5    158 
 East Rim Divide          7930   15.6    10.2    153    21.2    11.7    181 
 Grand Targhee            9260   46.3    39.0    119    39.5    30.8    128 
 Granite Creek            6770   25.7    14.1    182    36.1    19.6    184 
 Grassy Lake              7265   37.1    31.4    118    55.0    35.8    154 
 Gros Ventre Summit       8750     -M    12.8       *     -M    12.9       *
 Gunsight Pass            9820   23.7    13.9    171    25.4    13.9    183 
 Lewis Lake Divide        7850   46.2    30.1    153    55.4    35.2    157 
 Phillips Bench           8200   38.3    25.6    150    46.8    28.0    167 
 Salt River Summit        7760   20.0    12.6    159      -M    16.6       *
 Snake River Station      6920   18.3    14.6    125    35.9    22.4    160 
 Spring Creek Divide      9000   41.6    22.6    184    40.9    23.7    173 
 Thumb Divide             7980   22.5    14.7    153    28.0    18.5    151 
 Togwotee Pass            9580   33.8    22.3    152    38.8    24.2    160 
 Two Ocean Plateau        9240     -M    26.3       *     -M    27.1       *
 Willow Creek             8380   29.4    28.3    104    50.1    33.5    150 
 Younts Peak              8350   25.8    14.5    178    31.2    15.7    199 
                                                -----                  -----
                Basin Index (%)                  145                    161 
 

MADISON-GALLATIN

 Black Bear               8170   46.1    36.9    125    53.7    38.0    141 
 Canyon                   7870   17.8    12.4    144    25.8    16.1    160 
 Madison Plateau          7750   27.3    21.7    126    36.2    26.2    138 
 West Yellowstone         6700    6.1     9.1     67    23.3    14.1    165 
 Whiskey Creek            6800   13.4    14.8     91    26.8    20.0    134 
                                                -----                  -----
                Basin Index (%)                  117                    145 
 

YELLOWSTONE

 Beartooth Lake           9360   32.6    21.5    152    27.8    19.6    142 
 Burnt Mtn                5880     .1     4.0      2    14.7    13.1    112 
 Canyon                   7870   17.8    12.4    144    25.8    16.1    160 
 Cole Creek               7850   11.7    14.9     79     8.9    13.1     68 
 Evening Star             9200   38.3    23.9    160    44.7    27.2    164 
 Fisher Creek             9100   43.0    31.3    137    46.7    31.4    149 
 Northeast Entrance       7350    7.5     8.8     85    20.5    12.2    168 
 Parker Peak              9400   35.4    19.7    180    34.4    17.6    195 
 Sylvan Lake              8420   24.1    19.5    124    37.4    22.2    168 
 Thumb Divide             7980   22.5    14.7    153    28.0    18.5    151 
 Two Ocean Plateau        9240     -M    26.3       *     -M    27.1       *
 White Mill               8700   36.3    22.5    161    35.8    23.6    152 
 Wolverine                7650    5.4     9.6     56    21.0    12.2    172 
                                                -----                  -----
                Basin Index (%)                  135                    152 
 

WIND RIVER

 Burroughs Creek          8750   23.2      -M       *   27.6      -M       *
 Castle Creek             8400   10.8      -M       *   15.8      -M       *
 Cold Springs             9630   17.8     6.5    274    20.2    10.0    202 
 Deer Park                9700   33.5    16.0    209    38.4    20.0    192 
 Hobbs Park              10100   30.3    14.3    212    28.1    13.6    207 
 Kirwin                   9550   22.9     9.6    239    25.4    11.6    219 
 Little Warm              9370     -M    10.3       *   25.1    12.9    195 
 Owl Creek                8975   10.1     5.8    174    12.8     6.1    210 
 South Pass               9040     -M    15.5       *   28.8    17.5    165 
 St. Lawrence Alt         8620   10.4     6.9    151    17.4     9.0    193 
 Togwotee Pass            9580   33.8    22.3    152    38.8    24.2    160 
 Townsend Creek           8700   18.7     9.8    191    23.2    12.2    190 
                                                -----                  -----
                Basin Index (%)                  195                    188 
 

BIGHORN BASIN

 Bald Mtn.                9380   20.0    19.2    104    17.0    17.0    100 
 Bear Trap Meadow         8200    5.1     4.8    106     9.0     8.7    103 
 Bone Springs Div         9350   20.1    17.0    118    18.1    15.6    116 
 Grave Springs            8550    7.0     9.5     74     7.9    10.7     74 
 Kirwin                   9550   22.9     9.6    239    25.4    11.6    219 
 Marquette                8760   14.2      -M       *   17.7      -M       *
 Middle Powder            7760    7.5    12.2     61     7.7    11.8     65 
 Owl Creek                8975   10.1     5.8    174    12.8     6.1    210 
 Powder River Pass        9480    9.2    10.3     89    13.6    12.7    107 
 Shell Creek              9580   17.7    15.3    116    14.7    13.8    107 
 Timber Creek             7950    8.0     5.1    157    11.7     7.4    158 
                                                -----                  -----
                Basin Index (%)                  117                    119 
 

SHOSHONE RIVER

 Blackwater               9780   38.2    22.8    168    42.2    20.5    206 
 Evening Star             9200   38.3    23.9    160    44.7    27.2    164 
 Marquette                8760   14.2      -M       *   17.7      -M       *
 Sylvan Road              7120    6.2    10.6     58    30.6    16.6    184 
 Younts Peak              8350   25.8    14.5    178    31.2    15.7    199 
                                                -----                  -----
                Basin Index (%)                  151                    186 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.1     4.8    106     9.0     8.7    103 
 Cloud Peak Reservoir     9860   16.4    15.0    109    18.4    13.5    136 
 Grave Springs            8550    7.0     9.5     74     7.9    10.7     74 
 Hansen Sawmill           8360   11.4     6.1    187    14.4     8.7    166 
 Middle Powder            7760    7.5    12.2     61     7.7    11.8     65 
 Powder River Pass        9480    9.2    10.3     89    13.6    12.7    107 
 Soldier Park             8720   14.9      -M       *   14.3      -M       *
                                                -----                  -----
                Basin Index (%)                   98                    107 
 

TONGUE RIVER

 Big Goose                7990   11.8     9.8    120    14.2    11.7    121 
 Bone Springs Div         9350   20.1    17.0    118    18.1    15.6    116 
 Burgess Junction         7880   10.7    12.0     89    12.0    12.4     97 
 Dome Lake                8880   16.6    11.8    141    16.8    13.8    122 
 Little Goose             8870   13.8      -M       *   17.3      -M       *
 Sucker Creek             8880   13.5    12.4    109    14.0    14.5     97 
 Tie Creek                6870    3.4     5.5     62    13.9    11.9    117 
                                                -----                  -----
                Basin Index (%)                  111                    111 
 

BELLE FOURCHE

 Cole Canyon              5910     .0     4.6      0     7.3     9.6     76 
                                                -----                  -----
                Basin Index (%)                    0                     76 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     6.8      0     9.1    12.0     76 
 North Rapid Creek        6130     .0     6.4      0     7.7    10.0     77 
                                                -----                  -----
                Basin Index (%)                    0                     76 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.1    21.1    119    26.2    22.8    115 
 Blackhall Mtn            9820   35.9      -M       *   37.6      -M       *
 Columbine                9160   17.0    23.3     73    27.3    25.6    107 
 Divide Peak              8880   15.4    20.1     77    22.6    21.5    105 
 Joe Wright              10120   18.5    21.5     86    28.7    25.9    111 
 Laprele Creek            8375    9.9     9.4    105    12.5    12.6     99 
 Med Bow                 10500   38.8      -M       *   35.0      -M       *
 North French Creek      10130   24.7    30.0     82    27.3    26.9    101 
 Never Summer            10280   21.0    20.4    103    19.5      -M       *
 Old Battle              10000   36.1    31.6    114    38.1    35.2    108 
 Rawah                    9020    8.8    10.6     83    17.3    14.6    118 
 Sage Creek Basin         7850    5.3    11.4     46    16.5    14.7    112 
 Sand Lake               10050   30.7    29.3    105    27.5    25.0    110 
 South Brush Creek        8440    2.6    11.8     22    12.6    15.3     82 
 Tower                   10500   38.8    46.3     84    43.3    40.0    108 
 Webber Springs           9250   25.5    23.2    110    33.4    26.8    125 
 Willow Creek Pass        9540   18.0    12.3    146    18.6    13.5    138 
 Zirkel                   9340   30.9    26.1    118    41.9    28.6    147 
                                                -----                  -----
                Basin Index (%)                   94                    113 
 

SWEETWATER

 Deer Park                9700   33.5    16.0    209    38.4    20.0    192 
 Larsen Creek             9000   16.5    11.4    145    23.5      -M       *
 South Pass               9040     -M    15.5       *   28.8    17.5    165 
                                                -----                  -----
                Basin Index (%)                  182                    179 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.9    14.4     76    13.0    15.2     86 
 Laprele Creek            8375    9.9     9.4    105    12.5    12.6     99 
 Reno Hill                8400   12.1    14.1     86    14.2    15.7     90 
 Windy Peak               7900    7.8     7.6    103    11.8    10.6    111 
                                                -----                  -----
                Basin Index (%)                   89                     95 
 

LARAMIE RIVER

 Brooklyn Lake           10240   22.9    22.1    104    23.1    21.2    109 
 Cinnabar Park            9574   16.8    21.4     79    22.3    24.3     92 
 Crow Creek               8330     .0     6.8      0     9.3    11.0     85 
 Deadman Hill            10220   21.4    16.3    131    20.7    17.4    119 
 Rawah                    9020    8.8    10.6     83    17.3    14.6    118 
 Roach                    9700   16.6    16.6    100    21.4    19.3    111 
                                                -----                  -----
                Basin Index (%)                   92                    106 
 

S. PLATTE

 Black Mountain           8920   10.8      -M       *   13.2      -M       *
 Crow Creek               8330     .0     6.8      0     9.3    11.0     85 
 Deadman Hill            10220   21.4    16.3    131    20.7    17.4    119 
                                                -----                  -----
                Basin Index (%)                   93                    106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     -M     9.0       *   16.7    15.1    111 
 Divide Peak              8880   15.4    20.1     77    22.6    21.5    105 
 Elk River                8700   11.7    18.9     62    20.2    20.1    100 
 Little Snake River       8915   25.7    25.8    100    38.6    30.1    128 
 Old Battle              10000   36.1    31.6    114    38.1    35.2    108 
 Sage Creek Basin         7850    5.3    11.4     46    16.5    14.7    112 
 Sandstone RS             8150    5.4    12.7     43    16.2    18.4     88 
 Whiskey Park             8950   25.1    27.6     91    29.9    28.1    106 
                                                -----                  -----
                Basin Index (%)                   84                    109 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   21.4    12.8    167    23.3    13.3    175 
 Blind Bull Sum           8650   43.8    23.4    187      -M    19.4       *
 East Rim Divide          7930   15.6    10.2    153    21.2    11.7    181 
 Elkhart Park G.S.        9400   19.9    12.3    162    24.6    13.3    185 
 Gros Ventre Summit       8750     -M    12.8       *     -M    12.9       *
 Gunsight Pass            9820   23.7    13.9    171    25.4    13.9    183 
 Kendall R.S.             7740   20.0    11.2    179    29.4    14.1    209 
 Loomis Park              8240   26.8    13.8    194    32.2    17.3    186 
 New Fork Lake            8340   15.6    10.2    153    17.9    10.8    166 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.8    12.3    153    27.6    14.1    196 
 Spring Creek Divide      9000   41.6    22.6    184    40.9    23.7    173 
 Triple Peak              8500   36.5    21.6    169    41.2    25.2    163 
                                                -----                  -----
                Basin Index (%)                  173                    180 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    8.7      -M       *   16.3      -M       *
 Buck Pasture             9632   17.7      -M       *   23.9      -M       *
 EF Blacks Fork GS        9360   14.8      -M       *   17.7      -M       *
 Hams Fork                7840   14.0    10.3    136    21.8    11.4    191 
 Hewinta                  9500    8.9    10.8     82    17.8    14.1    126 
 Hickerson Park           9122    9.3     7.9    118    13.3    10.3    129 
 Hole-in-Rock             9168    7.6     7.1    107    13.9     9.8    142 
 Indian Creek             9425   41.1    24.8    166    41.5    22.5    184 
 Kelley R.S.              8180   25.6    14.5    177    30.9    18.1    171 
 Spirit Lk               10235   17.0      -M       *   19.2      -M       *
 Steel Creek Park        10158   19.5    15.9    123    21.5    16.6    130 
                                                -----                  -----
                Basin Index (%)                  138                    156 
 

UPPER BEAR RIVER

 Bear River RS            8777    8.6      -M       *   19.0      -M       *
 Bug Lake                 7987   32.9    18.7    176    34.7    19.4    179 
 Burts Miller Ranch       8000    2.3      -M       *   10.5      -M       *
 Chalk Creek #1           9171   34.1    24.5    139    36.7    25.3    145 
 Hayden Fork              9130   19.4    15.2    128    30.2    21.2    142 
 Kelley R.S.              8180   25.6    14.5    177    30.9    18.1    171 
 Lily Lake                9133   13.9    12.8    109    20.4    17.3    118 
 Monte Cristo             8932   37.3    27.8    134    40.3    26.0    155 
 Salt River Summit        7760   20.0    12.6    159      -M    16.6       *
                                                -----                  -----
                Basin Index (%)                  145                    152 

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


 -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.