Home
Interactive Maps
WY Weather
WY Climate
Drought
Data/Products
CoCoRaHS
Library
Articles & Publications
Education & Outreach
Site Map
Cooperative Projects
Water Links
Contact Us

Subscribe to our mailing list

Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785


Share this page
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 THURSDAY: APRIL 27 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   20.8    10.4    200    41.5    22.3    186 
 Black Bear               8170   51.5    37.0    139    59.4    41.1    145 
 Blind Bull Sum           8650   46.6    24.1    193    38.4    20.8    185 
 Cottonwood Creek         7670   28.8    16.7    172    42.4    26.8    158 
 East Rim Divide          7930   10.9     8.8    124    22.4    12.5    179 
 Grand Targhee            9260   54.4    43.6    125    48.6    33.6    145 
 Granite Creek            6770   22.2     9.0    247    37.7    20.8    181 
 Grassy Lake              7265   38.2    30.0    127    59.6    38.5    155 
 Gros Ventre Summit       8750   21.1    12.1    174    25.6    14.2    180 
 Gunsight Pass            9820     -M    13.3       *   27.4    15.5    177 
 Lewis Lake Divide        7850   48.0    30.7    156    58.7    37.8    155 
 Phillips Bench           8200   40.7    25.6    159    49.6    30.0    165 
 Salt River Summit        7760   17.5     8.2    213      -M    18.0       *
 Snake River Station      6920   13.9     9.4    148    38.6    24.2    160 
 Spring Creek Divide      9000   43.6    24.0    182    43.3    25.6    169 
 Thumb Divide             7980   20.1    13.9    145    30.1    20.4    148 
 Togwotee Pass            9580   35.8    24.6    146    41.6    26.6    156 
 Two Ocean Plateau        9240     -M    29.3       *     -M    29.5       *
 Willow Creek             8380   28.9    24.9    116    55.8    36.7    152 
 Younts Peak              8350   24.3    15.1    161    32.9    17.2    191 
                                                -----                  -----
                Basin Index (%)                  154                    162 
 

MADISON-GALLATIN

 Black Bear               8170   51.5    37.0    139    59.4    41.1    145 
 Canyon                   7870   18.7    11.5    163    28.4    17.6    161 
 Madison Plateau          7750   29.7    22.2    134    39.7    28.3    140 
 West Yellowstone         6700     .7     4.2     17    25.8    15.6    165 
 Whiskey Creek            6800   12.8    15.4     83    29.3    21.9    134 
                                                -----                  -----
                Basin Index (%)                  126                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   35.6    23.4    152    30.4    21.4    142 
 Burnt Mtn                5880     .0      .0       *   16.8    15.0    112 
 Canyon                   7870   18.7    11.5    163    28.4    17.6    161 
 Cole Creek               7850   14.2    16.3     87    11.5    15.7     73 
 Evening Star             9200   41.1    24.6    167    48.0    29.7    162 
 Fisher Creek             9100   47.2    33.2    142    51.3    34.4    149 
 Northeast Entrance       7350    3.4     4.6     74    22.6    13.4    169 
 Parker Peak              9400   41.7    21.8    191    38.9    19.6    198 
 Sylvan Lake              8420   26.4    20.3    130    41.2    24.5    168 
 Thumb Divide             7980   20.1    13.9    145    30.1    20.4    148 
 Two Ocean Plateau        9240     -M    29.3       *     -M    29.5       *
 White Mill               8700   40.5    23.7    171    39.0    25.7    152 
 Wolverine                7650    3.1     4.8     65    23.0    13.4    172 
                                                -----                  -----
                Basin Index (%)                  147                    152 
 

WIND RIVER

 Burroughs Creek          8750   20.0      -M       *   28.5      -M       *
 Castle Creek             8400    7.8      -M       *   17.2      -M       *
 Cold Springs             9630   15.4     2.4    642    21.0    11.9    176 
 Deer Park                9700   34.9    16.3    214    41.3    22.9    180 
 Hobbs Park              10100   32.4    15.8    205    31.7    16.2    196 
 Kirwin                   9550   24.5    10.2    240    27.5    13.3    207 
 Little Warm              9370   18.9     9.2    205    26.2    14.7    178 
 Owl Creek                8975    8.2     2.0    410    14.4     7.5    192 
 South Pass               9040   31.9    15.2    210    30.9    19.8    156 
 St. Lawrence Alt         8620    7.6     4.2    181    19.0    11.0    173 
 Togwotee Pass            9580   35.8    24.6    146    41.6    26.6    156 
 Townsend Creek           8700   17.6     8.4    210    25.3    14.5    174 
                                                -----                  -----
                Basin Index (%)                  210                    176 
 

BIGHORN BASIN

 Bald Mtn.                9380   22.6    20.6    110    19.7    19.1    103 
 Bear Trap Meadow         8200    6.5     1.6    406    13.8    10.1    137 
 Bone Springs Div         9350   22.6    16.5    137    20.4    17.6    116 
 Grave Springs            8550   10.1     9.1    111    12.0    12.3     98 
 Kirwin                   9550   24.5    10.2    240    27.5    13.3    207 
 Marquette                8760   16.8      -M       *   20.7      -M       *
 Middle Powder            7760   12.3    12.2    101    13.2    13.7     96 
 Owl Creek                8975    8.2     2.0    410    14.4     7.5    192 
 Powder River Pass        9480   10.7    10.0    107    16.4    14.5    113 
 Shell Creek              9580   19.8    15.9    125    17.3    15.7    110 
 Timber Creek             7950    6.6     3.6    183    13.3     9.3    143 
                                                -----                  -----
                Basin Index (%)                  141                    126 
 

SHOSHONE RIVER

 Blackwater               9780   40.9    24.7    166    45.0    22.8    197 
 Evening Star             9200   41.1    24.6    167    48.0    29.7    162 
 Marquette                8760   16.8      -M       *   20.7      -M       *
 Sylvan Road              7120     .1     7.5      1    32.3    18.1    178 
 Younts Peak              8350   24.3    15.1    161    32.9    17.2    191 
                                                -----                  -----
                Basin Index (%)                  148                    180 
 

POWDER RIVER

 Bear Trap Meadow         8200    6.5     1.6    406    13.8    10.1    137 
 Cloud Peak Reservoir     9860   20.0    16.5    121    24.2    16.0    151 
 Grave Springs            8550   10.1     9.1    111    12.0    12.3     98 
 Hansen Sawmill           8360   14.1     3.8    371    19.0    10.3    184 
 Middle Powder            7760   12.3    12.2    101    13.2    13.7     96 
 Powder River Pass        9480   10.7    10.0    107    16.4    14.5    113 
 Soldier Park             8720   16.6      -M       *   18.5      -M       *
                                                -----                  -----
                Basin Index (%)                  139                    128 
 

TONGUE RIVER

 Big Goose                7990   13.4     9.1    147    17.7    13.5    131 
 Bone Springs Div         9350   22.6    16.5    137    20.4    17.6    116 
 Burgess Junction         7880   12.2    12.3     99    14.3    14.3    100 
 Dome Lake                8880   18.0    11.7    154    20.1    15.9    126 
 Little Goose             8870   16.9      -M       *   21.7      -M       *
 Sucker Creek             8880   14.7    12.5    118    16.9    16.7    101 
 Tie Creek                6870    2.3     3.0     77    17.2    13.7    126 
                                                -----                  -----
                Basin Index (%)                  128                    116 
 

BELLE FOURCHE

 Cole Canyon              5910    1.3      .4    325*   10.9    11.2     97 
                                                -----                  -----
                Basin Index (%)                  325*                    97 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     2.7      0    10.7    13.8     78 
 North Rapid Creek        6130     .0     2.7      0     9.4    11.8     80 
                                                -----                  -----
                Basin Index (%)                    0                     79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.4    22.1    115    28.6    25.7    111 
 Blackhall Mtn            9820   36.2      -M       *   40.8      -M       *
 Columbine                9160   11.6    19.9     58    30.1    27.9    108 
 Divide Peak              8880   11.4    17.9     64    24.8    23.8    104 
 Joe Wright              10120   18.0    23.4     77    31.7    29.2    109 
 Laprele Creek            8375    6.1     7.1     86    14.0    14.6     96 
 Med Bow                 10500   38.1      -M       *   38.8      -M       *
 North French Creek      10130   26.4    32.9     80    31.3    30.0    104 
 Never Summer            10280   24.3    21.4    114    21.8      -M       *
 Old Battle              10000   38.8    34.4    113    41.1    38.4    107 
 Rawah                    9020    5.4     7.8     69    19.7    16.8    117 
 Sage Creek Basin         7850     -M     1.7       *   17.6    15.8    111 
 Sand Lake               10050   31.9    31.2    102    30.5    28.4    107 
 South Brush Creek        8440     .3    10.0      3    14.5    17.4     83 
 Tower                   10500   43.2    49.7     87    48.0    43.8    110 
 Webber Springs           9250   22.4    22.0    102    35.8    29.4    122 
 Willow Creek Pass        9540   18.7    13.8    136    19.9    15.3    130 
 Zirkel                   9340   23.9    21.9    109    45.2    30.5    148 
                                                -----                  -----
                Basin Index (%)                   92                    112 
 

SWEETWATER

 Deer Park                9700   34.9    16.3    214    41.3    22.9    180 
 Larsen Creek             9000   13.2     9.6    138    25.5      -M       *
 South Pass               9040   31.9    15.2    210    30.9    19.8    156 
                                                -----                  -----
                Basin Index (%)                  195                    169 
 

LOWER N. PLATTE

 Casper Mtn.              7900   11.3    14.1     80    16.7    17.5     95 
 Laprele Creek            8375    6.1     7.1     86    14.0    14.6     96 
 Reno Hill                8400   12.3    13.6     90    17.2    18.3     94 
 Windy Peak               7900    3.8     5.5     69    13.1    12.6    104 
                                                -----                  -----
                Basin Index (%)                   83                     97 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.3    23.0     88    24.9    24.1    103 
 Cinnabar Park            9574   13.1    20.1     65    24.8    26.4     94 
 Crow Creek               8330     .0      .0       *   11.5    13.0     88 
 Deadman Hill            10220   21.0    18.5    114    23.2    20.1    115 
 Rawah                    9020    5.4     7.8     69    19.7    16.8    117 
 Roach                    9700   15.3    17.0     90    23.5    21.7    108 
                                                -----                  -----
                Basin Index (%)                   87                    105 
 

S. PLATTE

 Black Mountain           8920    7.8      -M       *   15.2      -M       *
 Crow Creek               8330     .0      .0       *   11.5    13.0     88 
 Deadman Hill            10220   21.0    18.5    114    23.2    20.1    115 
                                                -----                  -----
                Basin Index (%)                  114*                   105 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0     1.0      0*   19.1    16.8    114 
 Divide Peak              8880   11.4    17.9     64    24.8    23.8    104 
 Elk River                8700    5.5    14.3     38    22.6    22.2    102 
 Little Snake River       8915   22.7    23.1     98    42.2    32.0    132 
 Old Battle              10000   38.8    34.4    113    41.1    38.4    107 
 Sage Creek Basin         7850     -M     1.7       *   17.6    15.8    111 
 Sandstone RS             8150     .0     7.7      0    17.9    20.3     88 
 Whiskey Park             8950   23.9    25.7     93    33.8    30.8    110 
                                                -----                  -----
                Basin Index (%)                   82                    109 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   23.0    11.8    195    25.4    14.8    172 
 Blind Bull Sum           8650   46.6    24.1    193    38.4    20.8    185 
 East Rim Divide          7930   10.9     8.8    124    22.4    12.5    179 
 Elkhart Park G.S.        9400   20.8    11.8    176    26.0    14.6    178 
 Gros Ventre Summit       8750   21.1    12.1    174    25.6    14.2    180 
 Gunsight Pass            9820     -M    13.3       *   27.4    15.5    177 
 Kendall R.S.             7740   15.5     5.9    263    30.5    15.1    202 
 Loomis Park              8240   24.4    11.5    212    33.8    18.5    183 
 New Fork Lake            8340   12.8     7.1    180    19.2    11.7    164 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   16.3    10.0    163    28.6    15.2    188 
 Spring Creek Divide      9000   43.6    24.0    182    43.3    25.6    169 
 Triple Peak              8500   36.0    18.8    191    43.5    27.3    159 
                                                -----                  -----
                Basin Index (%)                  186                    177 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    4.8      -M       *   18.0      -M       *
 Buck Pasture             9632   15.8      -M       *   26.0      -M       *
 EF Blacks Fork GS        9360   11.8      -M       *   20.0      -M       *
 Hams Fork                7840    9.6     4.4    218    23.2    12.7    183 
 Hewinta                  9500    6.6     6.1    108    19.8    15.7    126 
 Hickerson Park           9122    4.3     5.0     86    14.2    11.7    121 
 Hole-in-Rock             9168    4.6     4.2    110    15.0    11.2    134 
 Indian Creek             9425   43.0    23.8    181    43.9    24.4    180 
 Kelley R.S.              8180   24.1    11.8    204    33.0    19.7    168 
 Spirit Lk               10235   15.1      -M       *   20.1      -M       *
 Steel Creek Park        10158   21.4    16.7    128    23.9    18.6    128 
                                                -----                  -----
                Basin Index (%)                  158                    152 
 

UPPER BEAR RIVER

 Bear River RS            8777    1.2      -M       *   20.5      -M       *
 Bug Lake                 7987   32.4    16.1    201    36.5    21.1    173 
 Burts Miller Ranch       8000     .0      -M       *   11.5      -M       *
 Chalk Creek #1           9171   33.3    24.7    135    39.8    27.8    143 
 Hayden Fork              9130   14.7    10.1    146    32.8    23.2    141 
 Kelley R.S.              8180   24.1    11.8    204    33.0    19.7    168 
 Lily Lake                9133   12.0     9.7    124    22.2    19.0    117 
 Monte Cristo             8932   37.5    27.3    137    43.2    28.5    152 
 Salt River Summit        7760   17.5     8.2    213      -M    18.0       *
                                                -----                  -----
                Basin Index (%)                  159                    149 

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


 -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.