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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 9:52a, 8/21/18
Temperature 64.1°F
Wind 1.0 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: MARCH 25 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   24.2    14.6    166    37.8    19.4    195 
 Black Bear               8170   41.7    33.9    123    50.0    35.3    142 
 Blind Bull Sum           8650   41.6    21.1    197      -M    18.1       *
 Cottonwood Creek         7670   26.1    20.5    127    35.5    22.7    156 
 East Rim Divide          7930   17.6     9.7    181    20.5    10.9    188 
 Grand Targhee            9260   41.7    33.9    123    38.0    27.7    137 
 Granite Creek            6770   28.3    14.8    191    34.7    18.5    188 
 Grassy Lake              7265   34.3    30.3    113    51.2    33.4    153 
 Gros Ventre Summit       8750     -M    12.0       *     -M    11.8       *
 Gunsight Pass            9820   20.3    12.5    162    22.7    12.5    182 
 Lewis Lake Divide        7850   40.7    28.6    142    52.2    32.9    159 
 Phillips Bench           8200   35.1    23.1    152    44.6    25.9    172 
 Salt River Summit        7760   19.5    12.3    159      -M    15.4       *
 Snake River Station      6920   18.9    15.6    121    33.7    20.9    161 
 Spring Creek Divide      9000   37.9    21.9    173    38.0    22.0    173 
 Thumb Divide             7980   22.7    14.8    153    26.6    16.9    157 
 Togwotee Pass            9580   31.7    21.1    150    36.1    22.3    162 
 Two Ocean Plateau        9240     -M    24.6       *     -M    25.1       *
 Willow Creek             8380   28.8    25.5    113    46.4    30.7    151 
 Younts Peak              8350   25.0    13.7    182    30.1    14.5    208 
                                                -----                  -----
                Basin Index (%)                  146                    163 
 

MADISON-GALLATIN

 Black Bear               8170   41.7    33.9    123    50.0    35.3    142 
 Canyon                   7870   16.8    12.0    140    24.4    14.9    164 
 Madison Plateau          7750   25.0    20.6    121    33.9    24.2    140 
 West Yellowstone         6700    9.4    10.0     94    21.8    12.9    169 
 Whiskey Creek            6800   13.2    14.4     92    25.1    18.6    135 
                                                -----                  -----
                Basin Index (%)                  117                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   30.8    20.1    153    26.3    18.1    145 
 Burnt Mtn                5880    2.0     4.8     42    12.6    11.2    112 
 Canyon                   7870   16.8    12.0    140    24.4    14.9    164 
 Cole Creek               7850    9.6    12.5     77     6.8    11.2     61 
 Evening Star             9200   36.7    23.1    159    43.0    25.0    172 
 Fisher Creek             9100   41.4    28.6    145    44.5    29.3    152 
 Northeast Entrance       7350    9.5     9.5    100    19.3    11.2    172 
 Parker Peak              9400   31.7    18.0    176    32.4    16.1    201 
 Sylvan Lake              8420   22.0    18.6    118    35.3    20.4    173 
 Thumb Divide             7980   22.7    14.8    153    26.6    16.9    157 
 Two Ocean Plateau        9240     -M    24.6       *     -M    25.1       *
 White Mill               8700   33.1    20.8    159    34.0    21.8    156 
 Wolverine                7650    8.8     8.9     99    20.1    11.2    179 
                                                -----                  -----
                Basin Index (%)                  138                    157 
 

WIND RIVER

 Burroughs Creek          8750   23.2      -M       *   26.1      -M       *
 Castle Creek             8400   10.9      -M       *   14.3      -M       *
 Cold Springs             9630   12.6     6.7    188    15.5     8.8    176 
 Deer Park                9700   28.7    14.1    204    33.7    17.6    191 
 Hobbs Park              10100   23.5    12.5    188    22.1    11.5    192 
 Kirwin                   9550   19.5     8.7    224    22.0    10.3    214 
 Little Warm              9370   16.2     9.7    167    22.1    11.5    192 
 Owl Creek                8975    6.7     4.7    143     9.2     5.2    177 
 South Pass               9040   27.0    14.4    188    24.4    15.7    155 
 St. Lawrence Alt         8620    6.0     6.4     94    12.9     7.8    165 
 Togwotee Pass            9580   31.7    21.1    150    36.1    22.3    162 
 Townsend Creek           8700   12.9     8.6    150    17.0    10.4    163 
                                                -----                  -----
                Basin Index (%)                  173                    178 
 

BIGHORN BASIN

 Bald Mtn.                9380   17.6    16.8    105    15.2    15.3     99 
 Bear Trap Meadow         8200    4.2     5.2     81     6.6     7.4     89 
 Bone Springs Div         9350   16.6    14.3    116    15.6    13.8    113 
 Grave Springs            8550    6.1     8.3     73     6.6     9.3     71 
 Kirwin                   9550   19.5     8.7    224    22.0    10.3    214 
 Marquette                8760    7.7      -M       *   13.0      -M       *
 Middle Powder            7760    6.1    10.4     59     6.2    10.4     60 
 Owl Creek                8975    6.7     4.7    143     9.2     5.2    177 
 Powder River Pass        9480    7.2     9.5     76    10.7    11.3     95 
 Shell Creek              9580   15.1    13.3    114    12.2    12.3     99 
 Timber Creek             7950    4.5     4.2    107     7.6     6.4    119 
                                                -----                  -----
                Basin Index (%)                  109                    110 
 

SHOSHONE RIVER

 Blackwater               9780   36.0    21.1    171    39.8    18.6    214 
 Evening Star             9200   36.7    23.1    159    43.0    25.0    172 
 Marquette                8760    7.7      -M       *   13.0      -M       *
 Sylvan Road              7120   11.5    10.7    107    29.5    15.5    190 
 Younts Peak              8350   25.0    13.7    182    30.1    14.5    208 
                                                -----                  -----
                Basin Index (%)                  159                    193 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.2     5.2     81     6.6     7.4     89 
 Cloud Peak Reservoir     9860   12.4    13.4     93    13.8    11.7    118 
 Grave Springs            8550    6.1     8.3     73     6.6     9.3     71 
 Hansen Sawmill           8360    7.7     6.0    128    10.2     7.5    136 
 Middle Powder            7760    6.1    10.4     59     6.2    10.4     60 
 Powder River Pass        9480    7.2     9.5     76    10.7    11.3     95 
 Soldier Park             8720   11.4      -M       *   10.0      -M       *
                                                -----                  -----
                Basin Index (%)                   83                     94 
 

TONGUE RIVER

 Big Goose                7990    8.8     8.1    109    10.4     9.6    108 
 Bone Springs Div         9350   16.6    14.3    116    15.6    13.8    113 
 Burgess Junction         7880    8.7    10.1     86     9.8    10.8     91 
 Dome Lake                8880   13.0    10.7    121    13.1    12.0    109 
 Little Goose             8870    9.7      -M       *   12.9      -M       *
 Sucker Creek             8880   10.3    11.1     93    10.4    12.7     82 
 Tie Creek                6870    2.7     5.2     52    10.7    10.0    107 
                                                -----                  -----
                Basin Index (%)                  101                    102 
 

BELLE FOURCHE

 Cole Canyon              5910     .5     5.7      9     6.7     8.2     82 
                                                -----                  -----
                Basin Index (%)                    9                     82 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .7     7.0     10     7.9    10.7     74 
 North Rapid Creek        6130    2.3     6.7     34     6.7     8.8     76 
                                                -----                  -----
                Basin Index (%)                   22                     75 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   22.9    18.5    124    23.7    20.3    117 
 Blackhall Mtn            9820   34.1      -M       *   35.3      -M       *
 Columbine                9160   20.2    22.0     92    25.8    23.5    110 
 Divide Peak              8880   15.1    18.3     83    21.0    19.6    107 
 Joe Wright              10120   16.6    19.4     86    25.8    23.5    110 
 Laprele Creek            8375    9.9     9.4    105    10.7    11.2     96 
 Med Bow                 10500   37.2      -M       *   32.6      -M       *
 North French Creek      10130   23.1    26.6     87    25.2    24.5    103 
 Never Summer            10280   21.1    18.5    114    17.4      -M       *
 Old Battle              10000   35.3    27.6    128    36.4    32.2    113 
 Rawah                    9020    9.0     9.8     92    15.2    12.7    120 
 Sage Creek Basin         7850    8.2    11.9     69    15.2    13.2    115 
 Sand Lake               10050   28.5    25.7    111    25.6    22.4    114 
 South Brush Creek        8440    5.9    11.6     51    11.5    13.8     83 
 Tower                   10500   38.9    41.3     94    41.6    36.7    113 
 Webber Springs           9250   26.3    21.8    121    31.6    24.5    129 
 Willow Creek Pass        9540   16.3    11.2    146    17.2    12.0    143 
 Zirkel                   9340   34.1    25.6    133    40.3    26.1    154 
                                                -----                  -----
                Basin Index (%)                  104                    116 
 

SWEETWATER

 Deer Park                9700   28.7    14.1    204    33.7    17.6    191 
 Larsen Creek             9000   16.7    11.6    144    21.9      -M       *
 South Pass               9040   27.0    14.4    188    24.4    15.7    155 
                                                -----                  -----
                Basin Index (%)                  181                    174 
 

LOWER N. PLATTE

 Casper Mtn.              7900    9.1    12.7     72    10.4    13.3     78 
 Laprele Creek            8375    9.9     9.4    105    10.7    11.2     96 
 Reno Hill                8400   10.6    12.4     85    12.0    13.6     88 
 Windy Peak               7900    7.8     7.5    104    10.2     9.4    109 
                                                -----                  -----
                Basin Index (%)                   89                     91 
 

LARAMIE RIVER

 Brooklyn Lake           10240   23.2    18.3    127    21.7    19.1    114 
 Cinnabar Park            9574   17.1    19.2     89    20.8    22.0     95 
 Crow Creek               8330    1.1     6.9     16     8.2     9.6     85 
 Deadman Hill            10220   20.0    14.4    139    18.4    15.5    119 
 Rawah                    9020    9.0     9.8     92    15.2    12.7    120 
 Roach                    9700   15.1    14.4    105    18.8    17.4    108 
                                                -----                  -----
                Basin Index (%)                  103                    107 
 

S. PLATTE

 Black Mountain           8920    9.3      -M       *   10.7      -M       *
 Crow Creek               8330    1.1     6.9     16     8.2     9.6     85 
 Deadman Hill            10220   20.0    14.4    139    18.4    15.5    119 
                                                -----                  -----
                Basin Index (%)                   99                    106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    4.1    11.2     37    15.6    13.9    112 
 Divide Peak              8880   15.1    18.3     83    21.0    19.6    107 
 Elk River                8700   13.9    17.6     79    19.1    18.4    104 
 Little Snake River       8915   25.9    21.6    120    36.8    27.1    136 
 Old Battle              10000   35.3    27.6    128    36.4    32.2    113 
 Sage Creek Basin         7850    8.2    11.9     69    15.2    13.2    115 
 Sandstone RS             8150    8.5    12.9     66    15.2    17.1     89 
 Whiskey Park             8950   24.8    24.6    101    28.4    25.7    111 
                                                -----                  -----
                Basin Index (%)                   93                    112 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.0    11.9    168    22.4    12.1    185 
 Blind Bull Sum           8650   41.6    21.1    197      -M    18.1       *
 East Rim Divide          7930   17.6     9.7    181    20.5    10.9    188 
 Elkhart Park G.S.        9400   18.2    11.2    162    23.0    12.2    189 
 Gros Ventre Summit       8750     -M    12.0       *     -M    11.8       *
 Gunsight Pass            9820   20.3    12.5    162    22.7    12.5    182 
 Kendall R.S.             7740   21.1    11.4    185    28.1    13.2    213 
 Loomis Park              8240   26.4    14.0    189    31.1    16.0    194 
 New Fork Lake            8340   15.9     9.7    164    17.0    10.0    170 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.4    11.3    163    26.0    13.1    198 
 Spring Creek Divide      9000   37.9    21.9    173    38.0    22.0    173 
 Triple Peak              8500   34.9    20.3    172    38.8    23.4    166 
                                                -----                  -----
                Basin Index (%)                  176                    184 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    7.7      -M       *   14.0      -M       *
 Buck Pasture             9632   16.2      -M       *   21.4      -M       *
 EF Blacks Fork GS        9360   13.4      -M       *   14.9      -M       *
 Hams Fork                7840   13.9    10.5    132    19.6    10.5    187 
 Hewinta                  9500    6.5     9.9     66    14.7    12.7    116 
 Hickerson Park           9122    6.2     6.9     90     9.4     9.2    102 
 Hole-in-Rock             9168    4.3     6.9     62     9.9     8.6    115 
 Indian Creek             9425   38.2    22.2    172      -M    20.7       *
 Kelley R.S.              8180   24.3    14.1    172    29.1    16.7    174 
 Spirit Lk               10235   13.8      -M       *   16.2      -M       *
 Steel Creek Park        10158   16.0    13.8    116    18.1    14.7    123 
                                                -----                  -----
                Basin Index (%)                  130                    139 
 

UPPER BEAR RIVER

 Bear River RS            8777    8.1      -M       *   16.1      -M       *
 Bug Lake                 7987   29.8    17.3    172    31.4    17.8    176 
 Burts Miller Ranch       8000    2.2      -M       *    8.6      -M       *
 Chalk Creek #1           9171   30.2    22.1    137    32.7    22.9    143 
 Hayden Fork              9130   17.7    14.5    122    27.5    19.1    144 
 Kelley R.S.              8180   24.3    14.1    172    29.1    16.7    174 
 Lily Lake                9133   11.6    11.6    100    17.5    15.5    113 
 Monte Cristo             8932   33.7    25.1    134    36.4    23.7    154 
 Salt River Summit        7760   19.5    12.3    159      -M    15.4       *
                                                -----                  -----
                Basin Index (%)                  143                    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.