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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: MARCH 19 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   25.6    14.7    174    36.8    18.9    195 
 Black Bear               8170   43.0    32.4    133    48.7    34.3    142 
 Blind Bull Sum           8650   40.5    20.4    199      -M    17.6       *
 Cottonwood Creek         7670   26.0    19.7    132    34.4    21.8    158 
 East Rim Divide          7930   18.2     9.5    192    19.8    10.5    189 
 Grand Targhee            9260   40.0    32.9    122    36.8    26.9    137 
 Granite Creek            6770   29.6    15.0    197    34.3    18.1    190 
 Grassy Lake              7265   36.4    29.3    124    49.7    32.5    153 
 Gros Ventre Summit       8750     -M    11.6       *     -M    11.4       *
 Gunsight Pass            9820   19.6    12.0    163    22.1    12.0    184 
 Lewis Lake Divide        7850   38.5    27.6    139    50.3    31.9    158 
 Phillips Bench           8200   35.3    22.3    158    43.9    25.2    174 
 Salt River Summit        7760   20.1    12.0    168    26.8    14.9    180 
 Snake River Station      6920   19.9    15.1    132    32.7    20.3    161 
 Spring Creek Divide      9000   36.7    20.9    176    37.1    21.3    174 
 Thumb Divide             7980   20.9    14.0    149    25.5    16.4    155 
 Togwotee Pass            9580   30.4    20.5    148    35.0    21.7    161 
 Two Ocean Plateau        9240     -M    23.9       *     -M    24.2       *
 Willow Creek             8380   30.0    25.4    118    45.1    29.8    151 
 Younts Peak              8350   27.0    13.4    201    29.2    14.0    209 
                                                -----                  -----
                Basin Index (%)                  151                    164 
 

MADISON-GALLATIN

 Black Bear               8170   43.0    32.4    133    48.7    34.3    142 
 Canyon                   7870   16.7    11.7    143    23.7    14.5    163 
 Madison Plateau          7750   25.6    20.0    128    32.6    23.5    139 
 West Yellowstone         6700   11.0     9.9    111    21.2    12.7    167 
 Whiskey Creek            6800   14.7    14.1    104    24.2    18.0    134 
                                                -----                  -----
                Basin Index (%)                  126                    146 
 

YELLOWSTONE

 Beartooth Lake           9360   29.8    19.1    156    25.4    17.6    144 
 Burnt Mtn                5880    3.6     4.5     80    12.0    10.8    111 
 Canyon                   7870   16.7    11.7    143    23.7    14.5    163 
 Cole Creek               7850    9.3    11.9     78     6.7    10.6     63 
 Evening Star             9200   35.4    22.0    161    41.6    24.3    171 
 Fisher Creek             9100   39.7    28.2    141    42.9    28.4    151 
 Northeast Entrance       7350   10.8     9.0    120    18.6    10.9    171 
 Parker Peak              9400   30.7    17.5    175      -M    15.6       *
 Sylvan Lake              8420     -M    18.0       *   34.0    19.8    172 
 Thumb Divide             7980   20.9    14.0    149    25.5    16.4    155 
 Two Ocean Plateau        9240     -M    23.9       *     -M    24.2       *
 White Mill               8700   31.7    19.7    161    32.6    21.1    155 
 Wolverine                7650   12.5     8.9    140    19.7    10.9    181 
                                                -----                  -----
                Basin Index (%)                  145                    153 
 

WIND RIVER

 Burroughs Creek          8750   24.5      -M       *   25.3      -M       *
 Castle Creek             8400   11.4      -M       *   14.3      -M       *
 Cold Springs             9630   11.8     6.3    187    14.9     8.5    175 
 Deer Park                9700   27.2    13.1    208    32.2    17.0    189 
 Hobbs Park              10100   22.1    11.6    191    20.4    11.0    185 
 Kirwin                   9550   17.8     8.4    212    21.0     9.9    212 
 Little Warm              9370   15.6     9.2    170    21.3    11.1    192 
 Owl Creek                8975    6.7     4.6    146     8.7     4.9    178 
 South Pass               9040     -M    13.6       *   23.8    15.2    157 
 St. Lawrence Alt         8620    6.4     6.1    105    12.0     7.4    162 
 Togwotee Pass            9580   30.4    20.5    148    35.0    21.7    161 
 Townsend Creek           8700   12.1     8.1    149    15.9    10.0    159 
                                                -----                  -----
                Basin Index (%)                  171                    176 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.8    16.4    102    14.7    14.7    100 
 Bear Trap Meadow         8200    4.9     5.0     98     6.2     7.0     89 
 Bone Springs Div         9350   15.3    14.0    109    14.6    13.3    110 
 Grave Springs            8550    5.9     8.1     73     6.1     8.9     69 
 Kirwin                   9550   17.8     8.4    212    21.0     9.9    212 
 Marquette                8760    7.0      -M       *   11.7      -M       *
 Middle Powder            7760    6.2     9.6     65     6.2     9.9     63 
 Owl Creek                8975    6.7     4.6    146     8.7     4.9    178 
 Powder River Pass        9480    6.7     9.0     74    10.4    10.7     97 
 Shell Creek              9580   14.4    12.8    112    11.7    11.8     99 
 Timber Creek             7950    4.9     4.2    117     6.9     6.1    113 
                                                -----                  -----
                Basin Index (%)                  108                    110 
 

SHOSHONE RIVER

 Blackwater               9780   34.6    20.6    168    38.7    18.0    215 
 Evening Star             9200   35.4    22.0    161    41.6    24.3    171 
 Marquette                8760    7.0      -M       *   11.7      -M       *
 Sylvan Road              7120   14.0    10.4    135    28.4    15.1    188 
 Younts Peak              8350   27.0    13.4    201    29.2    14.0    209 
                                                -----                  -----
                Basin Index (%)                  167                    193 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.9     5.0     98     6.2     7.0     89 
 Cloud Peak Reservoir     9860   11.7    12.8     91    13.0    11.1    117 
 Grave Springs            8550    5.9     8.1     73     6.1     8.9     69 
 Hansen Sawmill           8360    7.2     5.6    129     9.3     7.1    131 
 Middle Powder            7760    6.2     9.6     65     6.2     9.9     63 
 Powder River Pass        9480    6.7     9.0     74    10.4    10.7     97 
 Soldier Park             8720   11.1      -M       *    9.2      -M       *
                                                -----                  -----
                Basin Index (%)                   85                     94 
 

TONGUE RIVER

 Big Goose                7990    8.1     7.7    105     9.3     9.2    101 
 Bone Springs Div         9350   15.3    14.0    109    14.6    13.3    110 
 Burgess Junction         7880    7.9     9.5     83     9.1    10.4     88 
 Dome Lake                8880   12.3    10.1    122    12.0    11.4    105 
 Little Goose             8870    8.8      -M       *   11.6      -M       *
 Sucker Creek             8880    9.5    10.8     88     9.8    12.1     81 
 Tie Creek                6870    3.5     5.0     70     9.7     9.7    100 
                                                -----                  -----
                Basin Index (%)                   99                     98 
 

BELLE FOURCHE

 Cole Canyon              5910    2.2     5.5     40     6.5     7.8     83 
                                                -----                  -----
                Basin Index (%)                   40                     83 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    3.2     7.2     44     7.7    10.5     73 
 North Rapid Creek        6130    4.0     6.5     62     6.5     8.5     76 
                                                -----                  -----
                Basin Index (%)                   53                     75 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.0    18.0    133    23.6    19.6    120 
 Blackhall Mtn            9820   34.5      -M       *   35.3      -M       *
 Columbine                9160   23.0    21.9    105    25.9    22.7    114 
 Divide Peak              8880   17.6    17.5    101    21.0    19.0    111 
 Joe Wright              10120   17.3    19.0     91    25.7    22.7    113 
 Laprele Creek            8375   10.5     9.1    115    10.5    10.8     97 
 Med Bow                 10500   37.0      -M       *   32.5      -M       *
 North French Creek      10130   23.7    24.9     95    25.1    23.5    107 
 Never Summer            10280   21.2    17.7    120    17.2      -M       *
 Old Battle              10000   35.5    26.2    135    36.3    31.2    116 
 Rawah                    9020   10.7     9.3    115    15.1    12.0    126 
 Sage Creek Basin         7850   11.5    11.6     99    15.2    12.9    118 
 Sand Lake               10050   28.2    24.4    116    25.4    21.5    118 
 South Brush Creek        8440    8.4    11.1     76    11.7    13.2     89 
 Tower                   10500   39.4    39.7     99    41.7    35.5    117 
 Webber Springs           9250   27.0    21.0    129    31.5    23.7    133 
 Willow Creek Pass        9540   16.3    10.8    151    17.1    11.6    147 
 Zirkel                   9340   38.6    25.8    150    40.2    25.3    159 
                                                -----                  -----
                Basin Index (%)                  115                    120 
 

SWEETWATER

 Deer Park                9700   27.2    13.1    208    32.2    17.0    189 
 Larsen Creek             9000   17.2    11.1    155    21.0      -M       *
 South Pass               9040     -M    13.6       *   23.8    15.2    157 
                                                -----                  -----
                Basin Index (%)                  183                    174 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.5    12.1     87    10.4    12.6     83 
 Laprele Creek            8375   10.5     9.1    115    10.5    10.8     97 
 Reno Hill                8400   10.8    11.9     91    11.9    12.8     93 
 Windy Peak               7900    9.0     7.0    129    10.0     9.0    111 
                                                -----                  -----
                Basin Index (%)                  102                     95 
 

LARAMIE RIVER

 Brooklyn Lake           10240   24.2    17.6    138    21.7    18.3    119 
 Cinnabar Park            9574   17.7    17.9     99    20.8    21.2     98 
 Crow Creek               8330    4.0     7.0     57     8.2     8.8     93 
 Deadman Hill            10220   19.5    13.8    141    18.2    14.9    122 
 Rawah                    9020   10.7     9.3    115    15.1    12.0    126 
 Roach                    9700   15.2    13.9    109    18.4    16.8    110 
                                                -----                  -----
                Basin Index (%)                  115                    111 
 

S. PLATTE

 Black Mountain           8920    9.2      -M       *   10.5      -M       *
 Crow Creek               8330    4.0     7.0     57     8.2     8.8     93 
 Deadman Hill            10220   19.5    13.8    141    18.2    14.9    122 
                                                -----                  -----
                Basin Index (%)                  113                    111 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    7.4    11.3     65    15.7    13.4    117 
 Divide Peak              8880   17.6    17.5    101    21.0    19.0    111 
 Elk River                8700   17.1    17.3     99    19.1    17.9    107 
 Little Snake River       8915   28.7    21.0    137    36.8    26.3    140 
 Old Battle              10000   35.5    26.2    135    36.3    31.2    116 
 Sage Creek Basin         7850   11.5    11.6     99    15.2    12.9    118 
 Sandstone RS             8150   11.3    12.0     94    15.2    16.6     92 
 Whiskey Park             8950   26.1    24.2    108    28.3    24.8    114 
                                                -----                  -----
                Basin Index (%)                  110                    116 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   19.9    11.6    172    21.7    11.7    185 
 Blind Bull Sum           8650   40.5    20.4    199      -M    17.6       *
 East Rim Divide          7930   18.2     9.5    192    19.8    10.5    189 
 Elkhart Park G.S.        9400   17.7    10.6    167    22.1    11.8    187 
 Gros Ventre Summit       8750     -M    11.6       *     -M    11.4       *
 Gunsight Pass            9820   19.6    12.0    163    22.1    12.0    184 
 Kendall R.S.             7740   22.4    11.2    200    27.6    12.9    214 
 Loomis Park              8240   26.4    13.3    198    30.5    15.5    197 
 New Fork Lake            8340   15.8     9.3    170    16.7     9.7    172 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.6    11.0    169    25.5    12.7    201 
 Spring Creek Divide      9000   36.7    20.9    176    37.1    21.3    174 
 Triple Peak              8500   34.9    19.3    181    37.6    22.6    166 
                                                -----                  -----
                Basin Index (%)                  182                    185 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    9.2      -M       *   13.6      -M       *
 Buck Pasture             9632   17.2      -M       *   20.6      -M       *
 EF Blacks Fork GS        9360   14.5      -M       *     -M      -M       *
 Hams Fork                7840   15.2    10.2    149    18.5    10.1    183 
 Hewinta                  9500    7.9     9.8     81    14.1    12.2    116 
 Hickerson Park           9122    6.7     6.6    102     8.5     8.8     97 
 Hole-in-Rock             9168    5.4     6.6     82     9.2     8.2    112 
 Indian Creek             9425   37.0    21.2    175      -M    20.0       *
 Kelley R.S.              8180   24.7    13.3    186    28.4    16.1    176 
 Spirit Lk               10235   12.7      -M       *   14.6      -M       *
 Steel Creek Park        10158   15.4    13.4    115    17.1    14.2    120 
                                                -----                  -----
                Basin Index (%)                  138                    138 
 

UPPER BEAR RIVER

 Bear River RS            8777    9.3      -M       *   15.4      -M       *
 Bug Lake                 7987   29.6    16.6    178    30.0    17.3    173 
 Burts Miller Ranch       8000    4.7      -M       *    8.4      -M       *
 Chalk Creek #1           9171   30.8    21.0    147    32.0    22.0    145 
 Hayden Fork              9130   19.4    14.2    137    26.7    18.4    145 
 Kelley R.S.              8180   24.7    13.3    186    28.4    16.1    176 
 Lily Lake                9133   11.9    11.4    104    16.9    14.9    113 
 Monte Cristo             8932   33.1    24.2    137    34.6    23.0    150 
 Salt River Summit        7760   20.1    12.0    168    26.8    14.9    180 
                                                -----                  -----
                Basin Index (%)                  150                    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.