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

At 4:48p, 10/18/18
Temperature 55.5°F
Wind 2.0 mph


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 SATURDAY: APRIL 1 , 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    14.8    161    38.6    20.2    191 
 Black Bear               8170   44.9    36.3    124    51.9    36.6    142 
 Blind Bull Sum           8650   41.9    22.4    187      -M    18.8       *
 Cottonwood Creek         7670   26.5    21.2    125    36.5    23.7    154 
 East Rim Divide          7930   16.9    10.0    169    20.7    11.3    183 
 Grand Targhee            9260   43.3    36.5    119    38.9    29.4    132 
 Granite Creek            6770   26.7    14.9    179    35.4    19.1    185 
 Grassy Lake              7265   35.3    31.6    112    52.6    34.6    152 
 Gros Ventre Summit       8750   19.4    12.9    150    23.4    12.4    189 
 Gunsight Pass            9820   21.5    13.4    160    23.7    13.2    180 
 Lewis Lake Divide        7850   43.9    29.5    149    54.1    34.1    159 
 Phillips Bench           8200   36.4    24.2    150    45.4    27.1    168 
 Salt River Summit        7760   19.5    12.9    151      -M    16.0       *
 Snake River Station      6920   18.7    15.5    121    34.5    21.6    160 
 Spring Creek Divide      9000   39.7    22.5    176    39.4    22.9    172 
 Thumb Divide             7980   22.7    14.9    152    27.1    17.8    152 
 Togwotee Pass            9580   32.3    21.6    150    37.0    23.3    159 
 Two Ocean Plateau        9240     -M    25.6       *     -M    26.2       *
 Willow Creek             8380   28.2    27.8    101    47.2    32.2    147 
 Younts Peak              8350   25.2    14.1    179    30.2    15.2    199 
                                                -----                  -----
                Basin Index (%)                  143                    161 
 

MADISON-GALLATIN

 Black Bear               8170   44.9    36.3    124    51.9    36.6    142 
 Canyon                   7870   17.2    12.3    140    24.9    15.5    161 
 Madison Plateau          7750   26.3    21.3    123    35.0    25.2    139 
 West Yellowstone         6700    8.0    10.2     78    22.4    13.5    166 
 Whiskey Creek            6800   13.4    15.0     89    26.0    19.4    134 
                                                -----                  -----
                Basin Index (%)                  115                    145 
 

YELLOWSTONE

 Beartooth Lake           9360   31.5    21.0    150    26.8    18.9    142 
 Burnt Mtn                5880    1.2     4.4     27      -M    12.1       *
 Canyon                   7870   17.2    12.3    140    24.9    15.5    161 
 Cole Creek               7850   11.3    13.5     84     8.1    12.0     68 
 Evening Star             9200   37.3    23.9    156    43.7    26.1    167 
 Fisher Creek             9100   42.7    30.1    142    46.1    30.4    152 
 Northeast Entrance       7350    9.3     9.6     97    19.9    11.7    170 
 Parker Peak              9400   33.0    18.8    176    33.0    16.9    195 
 Sylvan Lake              8420   23.0    19.2    120    36.0    21.3    169 
 Thumb Divide             7980   22.7    14.9    152    27.1    17.8    152 
 Two Ocean Plateau        9240     -M    25.6       *     -M    26.2       *
 White Mill               8700   34.9    21.6    162    35.2    22.7    155 
 Wolverine                7650    7.1     9.1     78    20.4    11.7    174 
                                                -----                  -----
                Basin Index (%)                  137                    157 
 

WIND RIVER

 Burroughs Creek          8750   23.5      -M       *   26.9      -M       *
 Castle Creek             8400   10.7      -M       *   14.9      -M       *
 Cold Springs             9630     -M     7.1       *     -M     9.5       *
 Deer Park                9700     -M    14.7       *   36.9    18.6    198 
 Hobbs Park              10100   29.0    13.4    216      -M    12.5       *
 Kirwin                   9550   22.2     9.4    236    24.2    11.0    220 
 Little Warm              9370   18.1    10.2    177    23.8    12.3    193 
 Owl Creek                8975    9.2     5.5    167    11.6     5.7    204 
 South Pass               9040   30.8    14.9    207    27.9    16.6    168 
 St. Lawrence Alt         8620     -M     6.8       *     -M     8.5       *
 Togwotee Pass            9580   32.3    21.6    150    37.0    23.3    159 
 Townsend Creek           8700   18.4     9.0    204    22.0    11.3    195 
                                                -----                  -----
                Basin Index (%)                  190                    186 
 

BIGHORN BASIN

 Bald Mtn.                9380   18.8    18.6    101    16.0    16.3     98 
 Bear Trap Meadow         8200    4.6     5.1     90     7.7     8.1     95 
 Bone Springs Div         9350   19.0    15.9    119    17.0    14.8    115 
 Grave Springs            8550    6.7     8.9     75     7.3    10.0     73 
 Kirwin                   9550   22.2     9.4    236    24.2    11.0    220 
 Marquette                8760     -M      -M       *   16.2      -M       *
 Middle Powder            7760    7.0    11.4     61     6.9    11.1     62 
 Owl Creek                8975    9.2     5.5    167    11.6     5.7    204 
 Powder River Pass        9480    8.1    10.0     81    11.9    12.0     99 
 Shell Creek              9580   16.4    14.5    113    13.5    13.2    102 
 Timber Creek             7950    7.2     4.8    150    10.5     7.0    150 
                                                -----                  -----
                Basin Index (%)                  115                    116 
 

SHOSHONE RIVER

 Blackwater               9780   36.9    22.1    167    41.1    19.7    209 
 Evening Star             9200   37.3    23.9    156    43.7    26.1    167 
 Marquette                8760     -M      -M       *   16.2      -M       *
 Sylvan Road              7120    9.3    11.1     84    29.9    16.1    186 
 Younts Peak              8350   25.2    14.1    179    30.2    15.2    199 
                                                -----                  -----
                Basin Index (%)                  153                    188 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.6     5.1     90     7.7     8.1     95 
 Cloud Peak Reservoir     9860   15.4    14.1    109    16.8    12.6    133 
 Grave Springs            8550    6.7     8.9     75     7.3    10.0     73 
 Hansen Sawmill           8360     -M     6.3       *   13.2     8.1    163 
 Middle Powder            7760    7.0    11.4     61     6.9    11.1     62 
 Powder River Pass        9480    8.1    10.0     81    11.9    12.0     99 
 Soldier Park             8720   14.6      -M       *   13.3      -M       *
                                                -----                  -----
                Basin Index (%)                   84                    103 
 

TONGUE RIVER

 Big Goose                7990   11.4     8.9    128    13.0    10.6    123 
 Bone Springs Div         9350   19.0    15.9    119    17.0    14.8    115 
 Burgess Junction         7880   10.3    11.3     91    11.3    11.7     97 
 Dome Lake                8880   15.7    11.5    137    15.6    12.9    121 
 Little Goose             8870   12.9      -M       *   16.0      -M       *
 Sucker Creek             8880   12.8    11.4    112    12.7    13.6     93 
 Tie Creek                6870     -M     5.4       *     -M    10.9       *
                                                -----                  -----
                Basin Index (%)                  117                    109 
 

BELLE FOURCHE

 Cole Canyon              5910     .0     5.8      0     6.9     8.8     78 
                                                -----                  -----
                Basin Index (%)                    0                     78 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     7.2      0     8.3    11.3     73 
 North Rapid Creek        6130     .5     6.7      7     6.9     9.3     74 
                                                -----                  -----
                Basin Index (%)                    4                     74 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.3    19.8    123    25.0    21.3    117 
 Blackhall Mtn            9820   35.1      -M       *   36.5      -M       *
 Columbine                9160   18.8    22.8     82    26.4    24.5    108 
 Divide Peak              8880   15.5    19.5     79    21.6    20.5    105 
 Joe Wright              10120   17.5    20.2     87    27.1    24.6    110 
 Laprele Creek            8375   10.5     9.5    111    11.8    11.8    100 
 Med Bow                 10500   36.9      -M       *   33.8      -M       *
 North French Creek      10130   23.6    28.0     84    26.3    25.7    102 
 Never Summer            10280   21.0    19.6    107    18.2      -M       *
 Old Battle              10000   35.6    29.6    120    37.2    33.6    111 
 Rawah                    9020    9.4    10.3     91    16.1    13.5    119 
 Sage Creek Basin         7850    7.1    12.7     56    15.9    13.9    114 
 Sand Lake               10050   29.7    27.5    108    26.6    23.6    113 
 South Brush Creek        8440    5.2    12.2     43    11.9    14.6     82 
 Tower                   10500   38.9    44.0     88    42.2    38.1    111 
 Webber Springs           9250   25.4    23.0    110    32.5    25.6    127 
 Willow Creek Pass        9540   16.9    11.8    143    17.8    12.8    139 
 Zirkel                   9340   32.5    26.4    123    40.9    27.2    150 
                                                -----                  -----
                Basin Index (%)                   99                    114 
 

SWEETWATER

 Deer Park                9700     -M    14.7       *   36.9    18.6    198 
 Larsen Creek             9000   17.3    12.2    142    23.0      -M       *
 South Pass               9040   30.8    14.9    207    27.9    16.6    168 
                                                -----                  -----
                Basin Index (%)                  177                    184 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.6    13.4     79    12.0    14.0     86 
 Laprele Creek            8375   10.5     9.5    111    11.8    11.8    100 
 Reno Hill                8400   12.1    13.2     92    13.4    14.5     92 
 Windy Peak               7900    8.3     7.8    106    11.1    10.0    111 
                                                -----                  -----
                Basin Index (%)                   95                     96 
 

LARAMIE RIVER

 Brooklyn Lake           10240   22.4    20.0    112    22.3    20.1    111 
 Cinnabar Park            9574   17.3    20.0     86    21.7    23.0     94 
 Crow Creek               8330     .3     6.8      4     9.0    10.2     88 
 Deadman Hill            10220   20.1    15.6    129    19.6    16.4    120 
 Rawah                    9020    9.4    10.3     91    16.1    13.5    119 
 Roach                    9700   16.1    15.6    103    20.2    18.3    110 
                                                -----                  -----
                Basin Index (%)                   97                    107 
 

S. PLATTE

 Black Mountain           8920   10.6      -M       *   12.3      -M       *
 Crow Creek               8330     .3     6.8      4     9.0    10.2     88 
 Deadman Hill            10220   20.1    15.6    129    19.6    16.4    120 
                                                -----                  -----
                Basin Index (%)                   91                    108 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     -M    10.6       *   16.3    14.5    112 
 Divide Peak              8880   15.5    19.5     79    21.6    20.5    105 
 Elk River                8700   12.7    18.5     69    19.6    19.3    102 
 Little Snake River       8915   26.6    23.2    115    37.8    28.5    133 
 Old Battle              10000   35.6    29.6    120    37.2    33.6    111 
 Sage Creek Basin         7850    7.1    12.7     56    15.9    13.9    114 
 Sandstone RS             8150    7.5    13.1     57    15.9    17.7     90 
 Whiskey Park             8950   25.0    25.8     97    29.1    26.9    108 
                                                -----                  -----
                Basin Index (%)                   91                    111 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.8    12.3    169    22.9    12.7    180 
 Blind Bull Sum           8650   41.9    22.4    187      -M    18.8       *
 East Rim Divide          7930   16.9    10.0    169    20.7    11.3    183 
 Elkhart Park G.S.        9400   18.7    12.1    155    23.7    12.8    185 
 Gros Ventre Summit       8750   19.4    12.9    150    23.4    12.4    189 
 Gunsight Pass            9820   21.5    13.4    160    23.7    13.2    180 
 Kendall R.S.             7740   20.4    11.4    179    28.5    13.7    208 
 Loomis Park              8240   26.6    14.3    186    31.6    16.7    189 
 New Fork Lake            8340   15.6    10.3    151    17.4    10.4    167 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.9    12.2    155    26.8    13.7    196 
 Spring Creek Divide      9000   39.7    22.5    176    39.4    22.9    172 
 Triple Peak              8500   35.4    21.7    163    39.8    24.4    163 
                                                -----                  -----
                Basin Index (%)                  169                    181 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    9.3      -M       *   15.8      -M       *
 Buck Pasture             9632   17.8      -M       *   23.2      -M       *
 EF Blacks Fork GS        9360   15.5      -M       *   17.0      -M       *
 Hams Fork                7840   14.3    10.8    132    21.2    10.9    194 
 Hewinta                  9500    9.0    10.9     83    17.2    13.4    128 
 Hickerson Park           9122    9.8     7.5    131    13.0     9.7    134 
 Hole-in-Rock             9168    7.8     7.0    111    13.6     9.2    148 
 Indian Creek             9425   40.0    23.9    167      -M    21.7       *
 Kelley R.S.              8180   25.0    14.9    168    29.9    17.4    172 
 Spirit Lk               10235   16.4      -M       *   18.6      -M       *
 Steel Creek Park        10158   18.8    15.3    123    20.7    15.7    132 
                                                -----                  -----
                Basin Index (%)                  138                    152 
 

UPPER BEAR RIVER

 Bear River RS            8777    9.8      -M       *   18.4      -M       *
 Bug Lake                 7987   31.7    18.1    175    33.6    18.7    180 
 Burts Miller Ranch       8000    3.6      -M       *   10.0      -M       *
 Chalk Creek #1           9171   33.5    23.4    143    35.8    24.1    149 
 Hayden Fork              9130   19.9    15.1    132    29.6    20.1    147 
 Kelley R.S.              8180   25.0    14.9    168    29.9    17.4    172 
 Lily Lake                9133   14.0    12.1    116    19.9    16.3    122 
 Monte Cristo             8932   35.6    26.3    135    38.3    24.9    154 
 Salt River Summit        7760   19.5    12.9    151      -M    16.0       *
                                                -----                  -----
                Basin Index (%)                  146                    154 

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


 -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.