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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 4:23p, 10/18/18
Temperature 58.0°F
Wind 3.0 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 18 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   26.2    14.6    179    36.8    18.9    195 
 Black Bear               8170   43.0    32.2    134    48.8    34.2    143 
 Blind Bull Sum           8650   40.4    20.3    199      -M    17.5       *
 Cottonwood Creek         7670   26.0    19.5    133    34.4    21.7    159 
 East Rim Divide          7930   18.4     9.5    194    19.8    10.5    189 
 Grand Targhee            9260   39.9    32.8    122      -M    26.8       *
 Granite Creek            6770   29.6    15.0    197    34.2    18.0    190 
 Grassy Lake              7265   35.9    29.1    123    49.7    32.3    154 
 Gros Ventre Summit       8750     -M    11.4       *     -M    11.3       *
 Gunsight Pass            9820   19.8    11.9    166    22.1    12.0    184 
 Lewis Lake Divide        7850   38.5    27.5    140    50.2    31.8    158 
 Phillips Bench           8200   35.2    22.2    159    43.9    25.1    175 
 Salt River Summit        7760   20.3    11.9    171      -M    14.8       *
 Snake River Station      6920   20.6    15.2    136    32.6    20.2    161 
 Spring Creek Divide      9000   36.6    20.7    177    37.0    21.2    175 
 Thumb Divide             7980   21.5    13.9    155    25.5    16.3    156 
 Togwotee Pass            9580   30.7    20.4    150    35.0    21.5    163 
 Two Ocean Plateau        9240     -M    23.8       *     -M    24.1       *
 Willow Creek             8380   30.0    25.3    119    45.1    29.6    152 
 Younts Peak              8350   27.1    13.2    205    29.1    14.0    208 
                                                -----                  -----
                Basin Index (%)                  152                    166 
 

MADISON-GALLATIN

 Black Bear               8170   43.0    32.2    134    48.8    34.2    143 
 Canyon                   7870   17.3    11.7    148    23.8    14.4    165 
 Madison Plateau          7750   25.3    20.0    126    32.7    23.4    140 
 West Yellowstone         6700   11.3     9.9    114    21.2    12.6    168 
 Whiskey Creek            6800   14.8    13.9    106    24.2    18.0    134 
                                                -----                  -----
                Basin Index (%)                  127                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   29.8    19.0    157    25.4    17.5    145 
 Burnt Mtn                5880    4.4     4.5     98    12.0    10.6    113 
 Canyon                   7870   17.3    11.7    148    23.8    14.4    165 
 Cole Creek               7850    9.4    11.8     80     6.6    10.5     63 
 Evening Star             9200   35.6    21.9    163    41.1    24.2    170 
 Fisher Creek             9100   39.9    28.1    142    42.9    28.3    152 
 Northeast Entrance       7350   11.4     8.9    128    18.6    10.9    171 
 Parker Peak              9400   30.7    17.5    175      -M    15.5       *
 Sylvan Lake              8420   22.5    17.9    126    34.0    19.7    173 
 Thumb Divide             7980   21.5    13.9    155    25.5    16.3    156 
 Two Ocean Plateau        9240     -M    23.8       *     -M    24.1       *
 White Mill               8700   31.7    19.7    161    32.6    21.0    155 
 Wolverine                7650   13.8     8.8    157    19.8    10.8    183 
                                                -----                  -----
                Basin Index (%)                  146                    153 
 

WIND RIVER

 Burroughs Creek          8750   24.6      -M       *   25.3      -M       *
 Castle Creek             8400   11.7      -M       *   14.3      -M       *
 Cold Springs             9630   11.9     6.2    192    14.9     8.4    177 
 Deer Park                9700   27.5    12.8    215    32.1    16.9    190 
 Hobbs Park              10100   22.1    11.5    192    20.4    10.9    187 
 Kirwin                   9550   18.3     8.3    220    21.0     9.8    214 
 Little Warm              9370   15.6     9.1    171    21.3    11.0    194 
 Owl Creek                8975    6.7     4.6    146     8.8     4.9    180 
 South Pass               9040   26.0    13.4    194    23.8    15.1    158 
 St. Lawrence Alt         8620    6.4     6.0    107    12.0     7.4    162 
 Togwotee Pass            9580   30.7    20.4    150    35.0    21.5    163 
 Townsend Creek           8700   12.1     8.0    151    15.9     9.9    161 
                                                -----                  -----
                Basin Index (%)                  177                    177 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.8    16.4    102    14.6    14.6    100 
 Bear Trap Meadow         8200    5.0     4.9    102     6.1     6.9     88 
 Bone Springs Div         9350   15.4    13.9    111    14.7    13.2    111 
 Grave Springs            8550    5.9     8.0     74     6.1     8.8     69 
 Kirwin                   9550   18.3     8.3    220    21.0     9.8    214 
 Marquette                8760    7.2      -M       *   11.8      -M       *
 Middle Powder            7760    6.4     9.5     67     6.2     9.8     63 
 Owl Creek                8975    6.7     4.6    146     8.8     4.9    180 
 Powder River Pass        9480    7.0     9.0     78    10.3    10.6     97 
 Shell Creek              9580   14.3    12.7    113    11.6    11.7     99 
 Timber Creek             7950    5.2     4.2    124     6.9     6.0    115 
                                                -----                  -----
                Basin Index (%)                  110                    110 
 

SHOSHONE RIVER

 Blackwater               9780   34.7    20.5    169    38.5    17.9    215 
 Evening Star             9200   35.6    21.9    163    41.1    24.2    170 
 Marquette                8760    7.2      -M       *   11.8      -M       *
 Sylvan Road              7120   14.6    10.3    142    28.4    15.0    189 
 Younts Peak              8350   27.1    13.2    205    29.1    14.0    208 
                                                -----                  -----
                Basin Index (%)                  170                    193 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.0     4.9    102     6.1     6.9     88 
 Cloud Peak Reservoir     9860   11.6    12.6     92    12.9    11.0    117 
 Grave Springs            8550    5.9     8.0     74     6.1     8.8     69 
 Hansen Sawmill           8360    7.2     5.5    131     9.3     7.0    133 
 Middle Powder            7760    6.4     9.5     67     6.2     9.8     63 
 Powder River Pass        9480    7.0     9.0     78    10.3    10.6     97 
 Soldier Park             8720   11.5      -M       *    9.2      -M       *
                                                -----                  -----
                Basin Index (%)                   87                     94 
 

TONGUE RIVER

 Big Goose                7990    8.2     7.6    108     9.4     8.9    106 
 Bone Springs Div         9350   15.4    13.9    111    14.7    13.2    111 
 Burgess Junction         7880    8.2     9.4     87     9.0    10.3     87 
 Dome Lake                8880   12.3    10.0    123    12.0    11.2    107 
 Little Goose             8870    9.0      -M       *   11.6      -M       *
 Sucker Creek             8880    9.9    10.7     93     9.8    12.0     82 
 Tie Creek                6870    4.2     4.9     86     9.7     9.6    101 
                                                -----                  -----
                Basin Index (%)                  103                     99 
 

BELLE FOURCHE

 Cole Canyon              5910    2.5     5.5     45     6.3     7.8     81 
                                                -----                  -----
                Basin Index (%)                   45                     81 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    3.6     7.2     50     7.8    10.4     75 
 North Rapid Creek        6130    4.4     6.4     69     6.4     8.5     75 
                                                -----                  -----
                Basin Index (%)                   59                     75 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.7    18.0    137    23.6    19.4    122 
 Blackhall Mtn            9820   34.5      -M       *   34.9      -M       *
 Columbine                9160   23.5    21.8    108    25.9    22.6    115 
 Divide Peak              8880   17.8    17.4    102    21.0    18.8    112 
 Joe Wright              10120   17.7    18.9     94    25.6    22.5    114 
 Laprele Creek            8375   10.8     9.0    120    10.5    10.6     99 
 Med Bow                 10500   36.7      -M       *   32.4      -M       *
 North French Creek      10130   24.3    24.6     99    25.1    23.4    107 
 Never Summer            10280   21.4    17.6    122    17.2      -M       *
 Old Battle              10000   35.4    26.2    135    36.3    31.0    117 
 Rawah                    9020   11.1     9.2    121    15.1    11.8    128 
 Sage Creek Basin         7850   12.2    11.6    105    15.2    12.9    118 
 Sand Lake               10050   28.1    24.2    116    25.5    21.3    120 
 South Brush Creek        8440    8.8    11.1     79    11.5    13.1     88 
 Tower                   10500   39.3    39.5     99    41.7    35.3    118 
 Webber Springs           9250   27.5    20.9    132    31.5    23.5    134 
 Willow Creek Pass        9540   16.3    10.8    151    17.1    11.6    147 
 Zirkel                   9340   38.9    25.8    151    40.2    25.1    160 
                                                -----                  -----
                Basin Index (%)                  117                    121 
 

SWEETWATER

 Deer Park                9700   27.5    12.8    215    32.1    16.9    190 
 Larsen Creek             9000   17.6    11.0    160    21.0      -M       *
 South Pass               9040   26.0    13.4    194    23.8    15.1    158 
                                                -----                  -----
                Basin Index (%)                  191                    175 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.8    12.0     90    10.4    12.5     83 
 Laprele Creek            8375   10.8     9.0    120    10.5    10.6     99 
 Reno Hill                8400   11.0    11.8     93    11.7    12.7     92 
 Windy Peak               7900    9.4     6.9    136    10.0     8.9    112 
                                                -----                  -----
                Basin Index (%)                  106                     95 
 

LARAMIE RIVER

 Brooklyn Lake           10240   24.2    17.5    138    21.7    18.1    120 
 Cinnabar Park            9574   18.1    17.8    102    20.8    21.1     99 
 Crow Creek               8330    4.5     7.0     64     8.2     8.7     94 
 Deadman Hill            10220   19.6    13.7    143    18.2    14.7    124 
 Rawah                    9020   11.1     9.2    121    15.1    11.8    128 
 Roach                    9700   15.2    13.8    110    18.4    16.6    111 
                                                -----                  -----
                Basin Index (%)                  117                    113 
 

S. PLATTE

 Black Mountain           8920    9.3      -M       *   10.5      -M       *
 Crow Creek               8330    4.5     7.0     64     8.2     8.7     94 
 Deadman Hill            10220   19.6    13.7    143    18.2    14.7    124 
                                                -----                  -----
                Basin Index (%)                  116                    113 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    8.1    11.2     72    15.6    13.4    116 
 Divide Peak              8880   17.8    17.4    102    21.0    18.8    112 
 Elk River                8700   18.0    17.3    104    19.1    17.7    108 
 Little Snake River       8915   29.3    20.8    141    36.7    26.2    140 
 Old Battle              10000   35.4    26.2    135    36.3    31.0    117 
 Sage Creek Basin         7850   12.2    11.6    105    15.2    12.9    118 
 Sandstone RS             8150   11.5    11.8     97    15.3    16.5     93 
 Whiskey Park             8950   26.4    24.1    110    28.3    24.7    115 
                                                -----                  -----
                Basin Index (%)                  113                    116 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   19.9    11.4    175    21.6    11.6    186 
 Blind Bull Sum           8650   40.4    20.3    199      -M    17.5       *
 East Rim Divide          7930   18.4     9.5    194    19.8    10.5    189 
 Elkhart Park G.S.        9400   17.8    10.5    170    22.1    11.7    189 
 Gros Ventre Summit       8750     -M    11.4       *     -M    11.3       *
 Gunsight Pass            9820   19.8    11.9    166    22.1    12.0    184 
 Kendall R.S.             7740   22.5    11.1    203    27.5    12.8    215 
 Loomis Park              8240   26.8    13.2    203    30.5    15.4    198 
 New Fork Lake            8340   16.0     9.2    174    16.6     9.6    173 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.7    10.9    172    25.5    12.7    201 
 Spring Creek Divide      9000   36.6    20.7    177    37.0    21.2    175 
 Triple Peak              8500   35.0    19.2    182    37.6    22.5    167 
                                                -----                  -----
                Basin Index (%)                  184                    186 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    9.4      -M       *   13.6      -M       *
 Buck Pasture             9632   17.6      -M       *   20.7      -M       *
 EF Blacks Fork GS        9360   15.1      -M       *     -M      -M       *
 Hams Fork                7840   15.8    10.2    155    18.4    10.0    184 
 Hewinta                  9500    8.7     9.6     91    14.1    12.2    116 
 Hickerson Park           9122    6.9     6.6    105     8.4     8.7     97 
 Hole-in-Rock             9168    5.7     6.5     88     9.1     8.2    111 
 Indian Creek             9425   37.0    21.0    176      -M    19.8       *
 Kelley R.S.              8180   24.9    13.2    189    28.4    16.0    178 
 Spirit Lk               10235   13.0      -M       *   14.7      -M       *
 Steel Creek Park        10158   15.2    13.3    114    17.1    14.1    121 
                                                -----                  -----
                Basin Index (%)                  142                    138 
 

UPPER BEAR RIVER

 Bear River RS            8777   10.1      -M       *   15.4      -M       *
 Bug Lake                 7987   29.7    16.5    180    30.0    17.2    174 
 Burts Miller Ranch       8000    5.4      -M       *    8.4      -M       *
 Chalk Creek #1           9171   30.9    20.8    149    32.1    21.9    147 
 Hayden Fork              9130   20.6    14.2    145    26.7    18.3    146 
 Kelley R.S.              8180   24.9    13.2    189    28.4    16.0    178 
 Lily Lake                9133   12.9    11.4    113    16.9    14.8    114 
 Monte Cristo             8932   33.6    24.1    139    34.7    22.8    152 
 Salt River Summit        7760   20.3    11.9    171      -M    14.8       *
                                                -----                  -----
                Basin Index (%)                  154                    152 

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


 -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.