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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 3:12p, 8/19/18
Temperature 56.2°F
Wind 6.0 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 SATURDAY: APRIL 29 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   21.1    10.0    211    42.1    22.6    186 
 Black Bear               8170   51.9    37.3    139    59.7    41.4    144 
 Blind Bull Sum           8650     -M    23.7       *   38.7    21.1    183 
 Cottonwood Creek         7670   30.0    16.0    188    43.5    27.1    161 
 East Rim Divide          7930   11.1     8.4    132    22.4    12.7    176 
 Grand Targhee            9260   57.6    44.1    131    50.9    34.1    149 
 Granite Creek            6770   22.3     8.6    259    38.1    21.1    181 
 Grassy Lake              7265   39.5    29.7    133    61.1    38.9    157 
 Gros Ventre Summit       8750   21.7    11.8    184    26.4    14.4    183 
 Gunsight Pass            9820     -M    13.0       *   28.1    15.9    177 
 Lewis Lake Divide        7850   48.3    30.4    159    59.4    38.2    155 
 Phillips Bench           8200   41.7    25.6    163    50.5    30.3    167 
 Salt River Summit        7760   18.0     8.1    222      -M    18.2       *
 Snake River Station      6920   14.4     8.4    171    39.0    24.5    159 
 Spring Creek Divide      9000   44.4    24.3    183    43.8    25.9    169 
 Thumb Divide             7980   20.4    13.3    153    30.5    20.7    147 
 Togwotee Pass            9580   36.9    24.7    149    42.7    27.0    158 
 Two Ocean Plateau        9240     -M    29.6       *     -M    29.8       *
 Willow Creek             8380   29.4    24.1    122    57.2    37.1    154 
 Younts Peak              8350   24.1    15.3    158    33.0    17.4    190 
                                                -----                  -----
                Basin Index (%)                  157                    163 
 

MADISON-GALLATIN

 Black Bear               8170   51.9    37.3    139    59.7    41.4    144 
 Canyon                   7870   18.8    11.0    171    28.6    17.8    161 
 Madison Plateau          7750   29.8    21.9    136    40.0    28.7    139 
 West Yellowstone         6700     .7     3.1     23    26.0    15.8    165 
 Whiskey Creek            6800   12.7    15.1     84    29.6    22.1    134 
                                                -----                  -----
                Basin Index (%)                  129                    146 
 

YELLOWSTONE

 Beartooth Lake           9360   35.8    23.1    155    30.8    21.7    142 
 Burnt Mtn                5880    1.1      .0       *   18.4    15.4    119 
 Canyon                   7870   18.8    11.0    171    28.6    17.8    161 
 Cole Creek               7850   17.1    16.4    104    14.0    16.0     88 
 Evening Star             9200   41.2    24.8    166    48.6    30.1    161 
 Fisher Creek             9100   47.5    33.0    144    51.7    34.8    149 
 Northeast Entrance       7350    3.2     4.0     80    22.7    13.6    167 
 Parker Peak              9400   42.3    21.5    197    39.4    19.8    199 
 Sylvan Lake              8420   27.0    20.2    134    41.8    24.7    169 
 Thumb Divide             7980   20.4    13.3    153    30.5    20.7    147 
 Two Ocean Plateau        9240     -M    29.6       *     -M    29.8       *
 White Mill               8700   40.4    23.8    170    39.2    26.0    151 
 Wolverine                7650    3.1     3.6     86    23.4    13.6    172 
                                                -----                  -----
                Basin Index (%)                  153                    153 
 

WIND RIVER

 Burroughs Creek          8750   20.5      -M       *   28.8      -M       *
 Castle Creek             8400    8.0      -M       *   17.3      -M       *
 Cold Springs             9630   16.2     1.7    953    21.9    12.1    181 
 Deer Park                9700   37.2    16.2    230    41.9    23.1    181 
 Hobbs Park              10100   34.8    15.9    219    31.6    16.4    193 
 Kirwin                   9550   26.0    10.3    252    28.7    13.5    213 
 Little Warm              9370   19.3     9.0    214    26.7    15.1    177 
 Owl Creek                8975    9.2     1.4    657    15.2     7.7    197 
 South Pass               9040   34.3    15.1    227    33.2    20.1    165 
 St. Lawrence Alt         8620     -M     3.4       *   20.6    11.3    182 
 Togwotee Pass            9580   36.9    24.7    149    42.7    27.0    158 
 Townsend Creek           8700   20.0     8.0    250    27.4    14.7    186 
                                                -----                  -----
                Basin Index (%)                  229                    180 
 

BIGHORN BASIN

 Bald Mtn.                9380   24.0    20.5    117    20.4    19.4    105 
 Bear Trap Meadow         8200    7.2     1.3    554    14.5    10.3    141 
 Bone Springs Div         9350   23.3    16.5    141    20.6    17.9    115 
 Grave Springs            8550   11.2     9.3    120    13.3    12.5    106 
 Kirwin                   9550   26.0    10.3    252    28.7    13.5    213 
 Marquette                8760     -M      -M       *   23.5      -M       *
 Middle Powder            7760   13.1    11.9    110    13.5    13.9     97 
 Owl Creek                8975    9.2     1.4    657    15.2     7.7    197 
 Powder River Pass        9480   11.9     9.7    123    17.7    14.8    120 
 Shell Creek              9580   20.1    16.0    126    17.7    16.0    111 
 Timber Creek             7950    8.4     3.4    247    15.0     9.7    155 
                                                -----                  -----
                Basin Index (%)                  154                    130 
 

SHOSHONE RIVER

 Blackwater               9780   41.9    25.0    168    46.2    23.1    200 
 Evening Star             9200   41.2    24.8    166    48.6    30.1    161 
 Marquette                8760     -M      -M       *   23.5      -M       *
 Sylvan Road              7120     .0     6.7      0    32.5    18.4    177 
 Younts Peak              8350   24.1    15.3    158    33.0    17.4    190 
                                                -----                  -----
                Basin Index (%)                  149                    180 
 

POWDER RIVER

 Bear Trap Meadow         8200    7.2     1.3    554    14.5    10.3    141 
 Cloud Peak Reservoir     9860   21.6    16.5    131    25.6    16.2    158 
 Grave Springs            8550   11.2     9.3    120    13.3    12.5    106 
 Hansen Sawmill           8360   16.0     3.3    485    19.0    10.6    179 
 Middle Powder            7760   13.1    11.9    110    13.5    13.9     97 
 Powder River Pass        9480   11.9     9.7    123    17.7    14.8    120 
 Soldier Park             8720   18.3      -M       *   20.2      -M       *
                                                -----                  -----
                Basin Index (%)                  156                    132 
 

TONGUE RIVER

 Big Goose                7990   15.0     9.2    163    19.2    13.7    140 
 Bone Springs Div         9350   23.3    16.5    141    20.6    17.9    115 
 Burgess Junction         7880   13.1    12.1    108    15.3    14.5    106 
 Dome Lake                8880   19.3    11.6    166    21.3    16.1    132 
 Little Goose             8870   18.9      -M       *   23.6      -M       *
 Sucker Creek             8880   16.2    12.4    131    18.3    17.0    108 
 Tie Creek                6870    4.3     2.8    154    19.2    13.9    138 
                                                -----                  -----
                Basin Index (%)                  141                    122 
 

BELLE FOURCHE

 Cole Canyon              5910    1.7      .3    567*   11.7    11.5    102 
                                                -----                  -----
                Basin Index (%)                  567*                   102 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     1.8      0    10.8    14.0     77 
 North Rapid Creek        6130     .0     1.8      0     9.6    11.9     81 
                                                -----                  -----
                Basin Index (%)                    0                     79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   26.1    22.3    117    29.2    25.9    113 
 Blackhall Mtn            9820   36.7      -M       *   41.6      -M       *
 Columbine                9160   12.7    19.1     66    30.9    28.2    110 
 Divide Peak              8880   12.1    18.0     67    25.6    24.0    107 
 Joe Wright              10120   18.5    23.5     79    32.4    29.5    110 
 Laprele Creek            8375    6.4     6.7     96    14.5    14.8     98 
 Med Bow                 10500   39.4      -M       *   39.9      -M       *
 North French Creek      10130   27.6    33.0     84    32.6    30.4    107 
 Never Summer            10280   24.7    21.6    114    22.3      -M       *
 Old Battle              10000   40.0    34.6    116    42.3    38.8    109 
 Rawah                    9020    5.8     7.0     83    20.0    17.0    118 
 Sage Creek Basin         7850     -M     1.2       *   17.9    16.0    112 
 Sand Lake               10050   32.3    31.3    103    31.1    28.7    108 
 South Brush Creek        8440     .5     9.8      5    14.8    17.6     84 
 Tower                   10500   44.1    49.8     89    49.5    44.3    112 
 Webber Springs           9250   23.0    22.0    105    36.7    29.7    124 
 Willow Creek Pass        9540   19.0    13.9    137    20.3    15.5    131 
 Zirkel                   9340   24.3    21.4    114    46.1    30.7    150 
                                                -----                  -----
                Basin Index (%)                   95                    114 
 

SWEETWATER

 Deer Park                9700   37.2    16.2    230    41.9    23.1    181 
 Larsen Creek             9000   13.4     9.4    143    25.9      -M       *
 South Pass               9040   34.3    15.1    227    33.2    20.1    165 
                                                -----                  -----
                Basin Index (%)                  209                    174 
 

LOWER N. PLATTE

 Casper Mtn.              7900   12.7    14.0     91    18.1    17.7    102 
 Laprele Creek            8375    6.4     6.7     96    14.5    14.8     98 
 Reno Hill                8400   13.0    13.1     99    17.8    18.6     96 
 Windy Peak               7900    4.1     4.7     87    13.6    12.8    106 
                                                -----                  -----
                Basin Index (%)                   94                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.7    23.2     89    25.5    24.4    105 
 Cinnabar Park            9574   14.1    19.9     71    25.9    26.8     97 
 Crow Creek               8330     .2      .0       *   11.9    13.3     89 
 Deadman Hill            10220   21.8    18.8    116    23.9    20.4    117 
 Rawah                    9020    5.8     7.0     83    20.0    17.0    118 
 Roach                    9700   16.1    17.3     93    24.5    22.0    111 
                                                -----                  -----
                Basin Index (%)                   91                    106 
 

S. PLATTE

 Black Mountain           8920    8.4      -M       *   15.8      -M       *
 Crow Creek               8330     .2      .0       *   11.9    13.3     89 
 Deadman Hill            10220   21.8    18.8    116    23.9    20.4    117 
                                                -----                  -----
                Basin Index (%)                  117*                   106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.4    17.0    114 
 Divide Peak              8880   12.1    18.0     67    25.6    24.0    107 
 Elk River                8700    6.0    13.8     43    23.2    22.4    104 
 Little Snake River       8915   23.3    22.7    103    42.8    32.4    132 
 Old Battle              10000   40.0    34.6    116    42.3    38.8    109 
 Sage Creek Basin         7850     -M     1.2       *   17.9    16.0    112 
 Sandstone RS             8150     .0     6.7      0    18.3    20.6     89 
 Whiskey Park             8950   24.3    26.1     93    34.7    31.1    112 
                                                -----                  -----
                Basin Index (%)                   87                    111 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   23.0    11.3    204    25.6    15.0    171 
 Blind Bull Sum           8650     -M    23.7       *   38.7    21.1    183 
 East Rim Divide          7930   11.1     8.4    132    22.4    12.7    176 
 Elkhart Park G.S.        9400   20.9    11.6    180    26.2    14.8    177 
 Gros Ventre Summit       8750   21.7    11.8    184    26.4    14.4    183 
 Gunsight Pass            9820     -M    13.0       *   28.1    15.9    177 
 Kendall R.S.             7740   15.5     5.2    298    30.6    15.4    199 
 Loomis Park              8240   24.7    11.3    219    34.2    18.7    183 
 New Fork Lake            8340   13.0     6.8    191    19.3    11.9    162 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   15.8     9.7    163    28.8    15.4    187 
 Spring Creek Divide      9000   44.4    24.3    183    43.8    25.9    169 
 Triple Peak              8500   36.6    18.2    201    44.3    27.6    161 
                                                -----                  -----
                Basin Index (%)                  191                    176 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    5.6      -M       *   18.8      -M       *
 Buck Pasture             9632   16.8      -M       *   27.2      -M       *
 EF Blacks Fork GS        9360   13.2      -M       *   21.3      -M       *
 Hams Fork                7840   10.1     3.7    273    23.7    12.9    184 
 Hewinta                  9500    8.0     5.3    151    20.8    15.9    131 
 Hickerson Park           9122    4.7     4.7    100    14.8    11.8    125 
 Hole-in-Rock             9168    5.3     3.3    161    15.5    11.3    137 
 Indian Creek             9425   43.8    23.5    186    44.7    24.7    181 
 Kelley R.S.              8180   24.5    11.8    208    33.6    19.9    169 
 Spirit Lk               10235   15.3      -M       *   20.5      -M       *
 Steel Creek Park        10158   22.6    16.9    134    25.1    18.8    134 
                                                -----                  -----
                Basin Index (%)                  172                    155 
 

UPPER BEAR RIVER

 Bear River RS            8777    2.0      -M       *   21.4      -M       *
 Bug Lake                 7987   33.6    15.7    214    37.6    21.4    176 
 Burts Miller Ranch       8000     .5      -M       *   11.8      -M       *
 Chalk Creek #1           9171   34.5    24.6    140    40.9    28.1    146 
 Hayden Fork              9130   15.3     9.7    158    33.7    23.5    143 
 Kelley R.S.              8180   24.5    11.8    208    33.6    19.9    169 
 Lily Lake                9133   13.1     9.8    134    23.0    19.3    119 
 Monte Cristo             8932   38.7    27.1    143    44.0    28.9    152 
 Salt River Summit        7760   18.0     8.1    222      -M    18.2       *
                                                -----                  -----
                Basin Index (%)                  166                    151 

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


 -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.