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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 3:13a, 5/25/18
Temperature 51.4°F
Wind 0.0 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 MONDAY: FEBRUARY 20 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   22.2    13.0    171    30.9    16.3    190 
 Black Bear               8170   32.1    27.8    115    40.5    29.0    140 
 Blind Bull Sum           8650   33.5    16.9    198      -M    15.1       *
 Cottonwood Creek         7670   22.4    15.5    145    29.6    18.4    161 
 East Rim Divide          7930   15.8     7.5    211    17.6     8.9    198 
 Grand Targhee            9260   34.4    27.6    125    31.0    23.7    131 
 Granite Creek            6770   24.5    13.0    188    26.5    15.6    170 
 Grassy Lake              7265   30.2    24.7    122    42.7    27.9    153 
 Gros Ventre Summit       8750     -M     9.2       *     -M     9.5       *
 Gunsight Pass            9820   16.1     9.9    163    19.3    10.2    189 
 Lewis Lake Divide        7850   30.3    24.2    125    41.3    27.3    151 
 Phillips Bench           8200   29.0    18.6    156    38.1    21.3    179 
 Salt River Summit        7760   17.5     9.8    179    23.2    12.6    184 
 Snake River Station      6920   18.1    13.6    133    28.9    17.7    163 
 Spring Creek Divide      9000   29.9    17.0    176    29.6    18.2    163 
 Thumb Divide             7980   18.1    11.1    163    21.4    13.8    155 
 Togwotee Pass            9580   25.4    16.8    151    29.4    18.3    161 
 Two Ocean Plateau        9240     -M    20.2       *     -M    20.4       *
 Willow Creek             8380   27.0    20.5    132    38.0    25.1    151 
 Younts Peak              8350   20.1    11.1    181    23.6    12.0    197 
                                                -----                  -----
                Basin Index (%)                  150                    162 
 

MADISON-GALLATIN

 Black Bear               8170   32.1    27.8    115    40.5    29.0    140 
 Canyon                   7870   13.9     9.8    142    20.4    12.4    165 
 Madison Plateau          7750   20.2    16.5    122    28.6    19.8    144 
 West Yellowstone         6700     -M     8.1       *     -M    11.0       *
 Whiskey Creek            6800   12.5    11.3    111    20.8    15.3    136 
                                                -----                  -----
                Basin Index (%)                  120                    144 
 

YELLOWSTONE

 Beartooth Lake           9360   23.8    15.7    152    19.7    14.9    132 
 Burnt Mtn                5880    4.8     3.8    126    10.1     8.9    113 
 Canyon                   7870   13.9     9.8    142    20.4    12.4    165 
 Cole Creek               7850    7.5     8.9     84     5.7     8.6     66 
 Evening Star             9200   27.7    18.3    151    33.6    20.9    161 
 Fisher Creek             9100   29.6    24.4    121    33.9    24.0    141 
 Northeast Entrance       7350    9.4     7.5    125    15.3     9.4    163 
 Parker Peak              9400   24.2    14.7    165    23.3    13.2    177 
 Sylvan Lake              8420   18.6    14.9    125    29.6    17.0    174 
 Thumb Divide             7980   18.1    11.1    163    21.4    13.8    155 
 Two Ocean Plateau        9240     -M    20.2       *     -M    20.4       *
 White Mill               8700   23.0    17.0    135    25.2    18.0    140 
 Wolverine                7650   13.7     8.2    167    16.9     9.4    180 
                                                -----                  -----
                Basin Index (%)                  139                    150 
 

WIND RIVER

 Burroughs Creek          8750   18.6      -M       *   20.8      -M       *
 Castle Creek             8400   10.0      -M       *   12.1      -M       *
 Cold Springs             9630    9.7     5.3    183    11.9     7.0    170 
 Deer Park                9700   23.2    10.1    230    26.9    14.3    188 
 Hobbs Park              10100   16.8     9.0    187    15.7     8.9    176 
 Kirwin                   9550   14.2     6.4    222    17.2     8.3    207 
 Little Warm              9370   11.5     7.6    151    17.1     9.3    184 
 Owl Creek                8975    5.6     3.5    160     7.2     4.0    180 
 South Pass               9040   21.8    10.6    206    20.2    12.7    159 
 St. Lawrence Alt         8620    5.0     4.8    104     9.5     6.1    156 
 Togwotee Pass            9580   25.4    16.8    151    29.4    18.3    161 
 Townsend Creek           8700    8.7     6.0    145    11.9     8.2    145 
                                                -----                  -----
                Basin Index (%)                  177                    172 
 

BIGHORN BASIN

 Bald Mtn.                9380   14.1    13.7    103    12.4    12.2    102 
 Bear Trap Meadow         8200    3.8     3.9     97     5.1     5.8     88 
 Bone Springs Div         9350   12.0    11.2    107    11.8    11.0    107 
 Grave Springs            8550    4.5     5.9     76     4.9     7.4     66 
 Kirwin                   9550   14.2     6.4    222    17.2     8.3    207 
 Marquette                8760    6.1      -M       *    9.7      -M       *
 Middle Powder            7760    5.0     7.4     68     5.6     8.2     68 
 Owl Creek                8975    5.6     3.5    160     7.2     4.0    180 
 Powder River Pass        9480    5.2     7.4     70     8.0     9.0     89 
 Shell Creek              9580   12.0    10.5    114     9.3     9.9     94 
 Timber Creek             7950    4.5     3.1    145     5.8     4.9    118 
                                                -----                  -----
                Basin Index (%)                  111                    108 
 

SHOSHONE RIVER

 Blackwater               9780   27.9    16.2    172    31.0    15.2    204 
 Evening Star             9200   27.7    18.3    151    33.6    20.9    161 
 Marquette                8760    6.1      -M       *    9.7      -M       *
 Sylvan Road              7120   13.1     8.8    149    24.4    13.3    183 
 Younts Peak              8350   20.1    11.1    181    23.6    12.0    197 
                                                -----                  -----
                Basin Index (%)                  163                    183 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.8     3.9     97     5.1     5.8     88 
 Cloud Peak Reservoir     9860    8.9     9.9     90    10.6     9.0    118 
 Grave Springs            8550    4.5     5.9     76     4.9     7.4     66 
 Hansen Sawmill           8360    6.1     4.4    139     8.0     5.7    140 
 Middle Powder            7760    5.0     7.4     68     5.6     8.2     68 
 Powder River Pass        9480    5.2     7.4     70     8.0     9.0     89 
 Soldier Park             8720    9.2      -M       *    7.7      -M       *
                                                -----                  -----
                Basin Index (%)                   86                     94 
 

TONGUE RIVER

 Big Goose                7990    6.6     5.9    112     7.4     7.5     99 
 Bone Springs Div         9350   12.0    11.2    107    11.8    11.0    107 
 Burgess Junction         7880    7.0     7.6     92     8.1     8.5     95 
 Dome Lake                8880    8.3     8.0    104     9.6     9.4    102 
 Little Goose             8870    7.0      -M       *    9.3      -M       *
 Sucker Creek             8880    7.9     8.2     96     8.0     9.9     81 
 Tie Creek                6870    4.1     4.1    100     7.9     7.9    100 
                                                -----                  -----
                Basin Index (%)                  102                     97 
 

BELLE FOURCHE

 Cole Canyon              5910    3.0     4.7     64     4.7     6.8     69 
                                                -----                  -----
                Basin Index (%)                   64                     69 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    4.4     5.8     76     5.9     8.9     66 
 North Rapid Creek        6130    4.4     5.6     79     5.2     7.2     72 
                                                -----                  -----
                Basin Index (%)                   77                     69 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   21.5    15.3    141    22.0    16.6    133 
 Blackhall Mtn            9820   30.1      -M       *   29.9      -M       *
 Columbine                9160   21.6    18.2    119    23.6    19.1    124 
 Divide Peak              8880   15.9    14.6    109    18.0    16.0    112 
 Joe Wright              10120   16.4    15.3    107    23.4    18.6    126 
 Laprele Creek            8375    9.2     7.0    131     8.6     8.8     98 
 Med Bow                 10500   30.6      -M       *   27.8      -M       *
 North French Creek      10130   19.8    19.6    101    21.1    19.8    107 
 Never Summer            10280   18.9    14.7    129    15.7      -M       *
 Old Battle              10000   30.5    22.8    134    31.3    26.4    119 
 Rawah                    9020   10.9     7.7    142    13.8    10.1    137 
 Sage Creek Basin         7850   12.8    10.2    125    13.1    11.3    116 
 Sand Lake               10050   22.8    19.4    118    21.3    17.8    120 
 South Brush Creek        8440    8.7     9.1     96     9.6    10.9     88 
 Tower                   10500   35.8    34.0    105    37.3    29.9    125 
 Webber Springs           9250   24.4    17.4    140    27.9    19.9    140 
 Willow Creek Pass        9540   15.1     8.9    170    16.1     9.7    166 
 Zirkel                   9340   34.9    21.7    161    36.2    22.2    163 
                                                -----                  -----
                Basin Index (%)                  125                    126 
 

SWEETWATER

 Deer Park                9700   23.2    10.1    230    26.9    14.3    188 
 Larsen Creek             9000   16.6     8.8    189    19.0      -M       *
 South Pass               9040   21.8    10.6    206    20.2    12.7    159 
                                                -----                  -----
                Basin Index (%)                  209                    174 
 

LOWER N. PLATTE

 Casper Mtn.              7900    7.7     9.4     82     7.5    10.4     72 
 Laprele Creek            8375    9.2     7.0    131     8.6     8.8     98 
 Reno Hill                8400    8.6     9.2     93     9.2    10.5     88 
 Windy Peak               7900    7.3     5.4    135     7.8     7.4    105 
                                                -----                  -----
                Basin Index (%)                  106                     89 
 

LARAMIE RIVER

 Brooklyn Lake           10240   19.4    14.3    136    17.6    15.0    117 
 Cinnabar Park            9574   15.0    16.2     93    17.8    18.9     94 
 Crow Creek               8330    3.6     6.6     55     6.2     7.4     84 
 Deadman Hill            10220   16.4    11.8    139    15.9    11.9    134 
 Rawah                    9020   10.9     7.7    142    13.8    10.1    137 
 Roach                    9700   14.0    11.9    118    16.7    13.8    121 
                                                -----                  -----
                Basin Index (%)                  116                    114 
 

S. PLATTE

 Black Mountain           8920    7.6      -M       *    8.8      -M       *
 Crow Creek               8330    3.6     6.6     55     6.2     7.4     84 
 Deadman Hill            10220   16.4    11.8    139    15.9    11.9    134 
                                                -----                  -----
                Basin Index (%)                  109                    115 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    8.9     8.9    100    13.0    11.4    114 
 Divide Peak              8880   15.9    14.6    109    18.0    16.0    112 
 Elk River                8700   16.9    14.1    120    16.9    15.1    112 
 Little Snake River       8915   27.0    18.8    144    32.4    24.1    134 
 Old Battle              10000   30.5    22.8    134    31.3    26.4    119 
 Sage Creek Basin         7850   12.8    10.2    125    13.1    11.3    116 
 Sandstone RS             8150   10.9    10.2    107    13.0    14.2     92 
 Whiskey Park             8950   22.7    19.8    115    24.4    21.1    116 
                                                -----                  -----
                Basin Index (%)                  122                    116 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   17.7     9.3    190    19.8     9.8    202 
 Blind Bull Sum           8650   33.5    16.9    198      -M    15.1       *
 East Rim Divide          7930   15.8     7.5    211    17.6     8.9    198 
 Elkhart Park G.S.        9400   15.0     8.8    170    19.7     9.8    201 
 Gros Ventre Summit       8750     -M     9.2       *     -M     9.5       *
 Gunsight Pass            9820   16.1     9.9    163    19.3    10.2    189 
 Kendall R.S.             7740   18.9     9.2    205      -M    10.9       *
 Loomis Park              8240   22.3    10.9    205    26.4    13.2    200 
 New Fork Lake            8340   14.2     7.6    187    14.3     8.2    174 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   16.6     9.1    182    21.9    10.8    203 
 Spring Creek Divide      9000   29.9    17.0    176    29.6    18.2    163 
 Triple Peak              8500   30.4    15.8    192    31.8    18.8    169 
                                                -----                  -----
                Basin Index (%)                  189                    186 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    8.9      -M       *   11.6      -M       *
 Buck Pasture             9632   15.5      -M       *   18.0      -M       *
 EF Blacks Fork GS        9360   12.4      -M       *   10.0      -M       *
 Hams Fork                7840   14.5     8.6    169    16.3     8.6    190 
 Hewinta                  9519    9.7     7.2    135    11.9    10.1    118 
 Hickerson Park           9145    6.7     5.3    126     6.8     7.1     96 
 Hole-in-Rock             9150    5.5     5.0    110     7.5     6.7    112 
 Indian Creek             9425   30.2    17.2    176      -M    16.7       *
 Kelley R.S.              8180   21.4    11.0    195    25.2    13.7    184 
 Spirit Lk               10235   11.8      -M       *   12.9      -M       *
 Steel Creek Park        10200   12.9    10.6    122    14.7    11.6    127 
                                                -----                  -----
                Basin Index (%)                  155                    143 
 

UPPER BEAR RIVER

 Bear River RS            8777   10.8      -M       *   13.1      -M       *
 Bug Lake                 7950   25.9    13.7    189    25.6    14.6    175 
 Burts Miller Ranch       8000    6.2      -M       *    6.8      -M       *
 Chalk Creek #1           8993   26.7    16.8    159    27.3    18.4    148 
 Hayden Fork              9212   18.4    11.3    163      -M    15.4       *
 Kelley R.S.              8180   21.4    11.0    195    25.2    13.7    184 
 Lily Lake                9156   12.6     9.4    134    14.7    12.5    118 
 Monte Cristo             8960   27.9    19.4    144    26.1    19.3    135 
 Salt River Summit        7760   17.5     9.8    179    23.2    12.6    184 
                                                -----                  -----
                Basin Index (%)                  165                    156 

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


 -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.