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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
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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 TUESDAY: MAY 7 , 2013
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     7.1     6.1   116     22.2    23.4    95
 BLACK BEAR               8170    37.4    37.0   101     37.4    42.6    88
 BLIND BULL SUM           8650    20.8    22.6    92     16.4    21.9    75
 COTTONWOOD CREEK         7670    13.9    13.5   103     26.1    28.3    92
 EAST RIM DIVIDE          7930      .1     6.9     1     10.5    13.3    79
 GRAND TARGHEE            9260    40.2    46.4    87     31.3    35.7    88
 GRANITE CREEK            6770     4.3     6.7    64     16.8    21.9    77
 GRASSY LAKE              7265    19.3    27.0    71     34.0    40.1    85
 GROS VENTRE SUMMIT       8750     8.6    10.2    84     13.2    15.1    87
 GUNSIGHT PASS            9820    11.9    11.7   102     13.9    16.5    84
 LEWIS LAKE DIVIDE        7850    23.5    29.4    80     34.1    39.3    87
 PHILLIPS BENCH           8200    22.7    23.6    96     27.7    31.4    88
 SALT RIVER SUMMIT        7760     4.5     6.2    73     16.0    18.8    85
 SNAKE RIVER STATION      6920     1.8     4.0    45     22.7    25.3    90
 SPRING CREEK DIVIDE      9000    24.2    24.1   100     25.3    26.8    94
 THUMB DIVIDE             7980     7.9     9.7    81     18.9    21.5    88
 TOGWOTEE PASS            9580    23.1    25.0    92     25.2    28.1    90
 TWO OCEAN PLATEAU        9240    30.2    29.8   101     28.0    30.8    91
 WILLOW CREEK             8380    21.7    21.7   100     34.8    38.6    90
 YOUNTS PEAK              8350    14.0    15.6    90     13.9    18.3    76
                                                -----                  -----
                Basin wide percent                89                     87


MADISON-GALLATIN

 BLACK BEAR               8170    37.4    37.0   101     37.4    42.6    88
 CANYON                   7870     8.6     8.2   105     14.2    18.5    77
 MADISON PLATEAU          7750    17.0    20.7    82     25.9    29.6    88
 WEST YELLOWSTONE         6700      .0      .0      *    14.2    16.4    87
 WHISKEY CREEK            6800     7.8    11.9    66     19.1    22.8    84
                                                -----                  -----
                Basin wide percent                91                     85


YELLOWSTONE

 BEARTOOTH LAKE           9360    19.7    22.9    86     20.6    22.7    91
 BURNT MTN                5880      .0      .0      *    12.9    16.6    78
 CANYON                   7870     8.6     8.2   105     14.2    18.5    77
 COLE CREEK               7850    15.0    16.9    89     12.1    17.2    70
 EVENING STAR             9200    24.2    25.1    96     31.4    31.3   100
 FISHER CREEK             9100    31.3    33.4    94     33.8    36.1    94
 NORTHEAST ENTRANCE       7350      .0     1.0     0     12.5    14.3    87
 PARKER PEAK              9400    22.0    21.6   102     23.6    20.7   114
 SYLVAN LAKE              8420    14.7    18.4    80     25.5    25.9    98
 THUMB DIVIDE             7980     7.9     9.7    81     18.9    21.5    88
 TWO OCEAN PLATEAU        9240    30.2    29.8   101     28.0    30.8    91
 WHITE MILL               8700    24.2    24.3   100     24.4    27.0    90
 WOLVERINE                7650      .7      .5   140*    12.2    14.2    86
                                                -----                  -----
                Basin wide percent                94                     91


WIND RIVER

 BURROUGHS CREEK          8750    12.3    12.0   102     12.9    18.5    70
 CASTLE CREEK             8400      .0      -M      *     9.7      -M      *
 COLD SPRINGS             9630     1.2     1.6    75     10.3    13.1    79
 DEER PARK                9700    12.7    14.7    86     16.6    24.2    69
 HOBBS PARK              10100    14.0    15.9    88     14.5    17.4    83
 KIRWIN                   9550    11.9    10.8   110     14.1    14.5    97
 LITTLE WARM              9370     7.8     7.1   110     13.1    15.9    82
 OWL CREEK                8975     4.3      .5   860*     8.4     8.4   100
 SOUTH PASS               9040    10.7    13.1    82     12.1    21.0    58
 ST. LAWRENCE ALT         8620      .4     1.5    27     10.6    12.1    88
 TOGWOTEE PASS            9580    23.1    25.0    92     25.2    28.1    90
 TOWNSEND CREEK           8700     7.2     5.2   138     12.3    15.5    79
                                                -----                  -----
                Basin wide percent                98                     80


BIGHORN BASIN

 BALD MTN.                9380    17.6    20.4    86     13.1    20.4    64
 BEAR TRAP MEADOW         8200     5.7      .2  2850*    11.7    11.3   104
 BONE SPRINGS DIV         9350    17.4    16.4   106     14.3    19.0    75
 GRAVE SPRINGS            8550     7.4     8.5    87     10.2    13.6    75
 KIRWIN                   9550    11.9    10.8   110     14.1    14.5    97
 MARQUETTE                8760    10.9      -M      *    12.8      -M      *
 MIDDLE POWDER            7760    12.3    11.2   110     15.9    14.8   107
 OWL CREEK                8975     4.3      .5   860*     8.4     8.4   100
 POWDER RIVER PASS        9480    13.9     9.0   154     17.8    15.8   113
 SHELL CREEK              9580    18.2    16.4   111     17.1    17.0   101
 TIMBER CREEK             7950     3.9     1.9   205     11.5    10.6   108
                                                -----                  -----
                Basin wide percent               118                     92


SHOSHONE RIVER

 BLACKWATER               9780    27.0    25.5   106     26.6    24.2   110
 EVENING STAR             9200    24.2    25.1    96     31.4    31.3   100
 MARQUETTE                8760    10.9      -M      *    12.8      -M      *
 SYLVAN ROAD              7120      .0     2.9     0     16.8    19.0    88
 YOUNTS PEAK              8350    14.0    15.6    90     13.9    18.3    76
                                                -----                  -----
                Basin wide percent                94                     96


POWDER RIVER

 BEAR TRAP MEADOW         8200     5.7      .2  2850*    11.7    11.3   104
 CLOUD PEAK RESERVOIR     9860    16.1    16.5    98     15.7    17.5    90
 GRAVE SPRINGS            8550     7.4     8.5    87     10.2    13.6    75
 HANSEN SAWMILL           8360     6.6     1.5   440     11.3    11.4    99
 MIDDLE POWDER            7760    12.3    11.2   110     15.9    14.8   107
 POWDER RIVER PASS        9480    13.9     9.0   154     17.8    15.8   113
 SOLDIER PARK             8720     5.7      -M      *    10.9      -M      *
                                                -----                  -----
                Basin wide percent               132                     98


TONGUE RIVER

 BIG GOOSE                7990     8.7    10.1    86     11.8    15.1    78
 BONE SPRINGS DIV         9350    17.4    16.4   106     14.3    19.0    75
 BURGESS JUNCTION         7880    12.1    11.4   106     11.8    15.5    76
 DOME LAKE                8880    11.6    11.2   104     13.0    17.2    76
 LITTLE GOOSE             8870    10.5      -M      *    15.4      -M      *
 SUCKER CREEK             8880    13.7    12.1   113     15.8    18.3    86
 TIE CREEK                6870     3.3     2.1   157     13.6    15.1    90
                                                -----                  -----
                Basin wide percent               106                     80


BELLE FOURCHE

 COLE CANYON              5910     2.1      .0      *    10.5    12.9    81
                                                -----                  -----
                Basin wide percent                  *                    81


CHEYENNE RIVER BASIN

 BLIND PARK               6890      .5      .0      *    14.0    14.9    94
 NORTH RAPID CREEK        6130     1.8      .0      *    11.8    12.9    91
                                                -----                  -----
                Basin wide percent                  *                    93


UPPER N. PLATTE

 ARAPAHO RIDGE           10960    21.6    22.3    97     24.6    26.9    91
 BLACKHALL MTN            9820    29.0      -M      *    31.5      -M      *
 COLUMBINE                9160    14.3    15.1    95     27.4    29.3    94
 DIVIDE PEAK              8880    11.7    16.3    72     21.8    25.0    87
 JOE WRIGHT              10120    22.8    22.9   100     31.9    30.8   104
 LAPRELE CREEK            8375     2.4     4.6    52     11.0    15.6    71
 MED BOW                 10500      -M      -M      *    33.5      -M      *
 NORTH FRENCH CREEK      10130    24.9    32.8    76     27.2    31.6    86
 NEVER SUMMER            10280    21.8    22.0    99     17.5      -M      *
 OLD BATTLE              10000    30.1    35.8    84     33.0    40.2    82
 RAWAH                    9020     9.8     3.8   258     18.7    17.8   105
 SAGE CREEK BASIN         7850      -M      .2      *    11.5    16.6    69
 SAND LAKE               10050    26.1    31.8    82     26.9    29.9    90
 SOUTH BRUSH CREEK        8440     4.6     6.7    69     15.2    18.5    82
 TOWER                   10500    38.3    51.3    75       -M    45.9      *
 WEBBER SPRINGS           9250    19.5    20.5    95     26.3    30.6    86
 WILLOW CREEK PASS        9540    18.8    14.3   131     19.6    16.2   121
 ZIRKEL                   9340    22.4    20.2   111     32.7    31.8   103
                                                -----                  -----
                Basin wide percent                90                     91


SWEETWATER

 DEER PARK                9700    12.7    14.7    86     16.6    24.2    69
 LARSEN CREEK             9000      .0      -M      *    11.6      -M      *
 SOUTH PASS               9040    10.7    13.1    82     12.1    21.0    58
                                                -----                  -----
                Basin wide percent                84                     63


LOWER N. PLATTE

 CASPER MTN.              7900    11.2    11.9    94     11.5    18.9    61
 LAPRELE CREEK            8375     2.4     4.6    52     11.0    15.6    71
 RENO HILL                8400    10.7    11.8    91     15.8    19.7    80
 WINDY PEAK               7900     2.0     2.0   100     10.4    13.5    77
                                                -----                  -----
                Basin wide percent                87                     72


LARAMIE RIVER

 BROOKLYN LAKE           10240    19.6    22.2    88     21.9    25.5    86
 CINNABAR PARK            9574    15.3    18.1    85     22.9    27.9    82
 CROW CREEK               8330      .5      .0      *    12.5    14.1    89
 DEADMAN HILL            10220    18.4    18.9    97     19.6    21.3    92
 RAWAH                    9020     9.8     3.8   258     18.7    17.8   105
 ROACH                    9700    16.6    16.6   100     21.0    23.0    91
                                                -----                  -----
                Basin wide percent               101                     90


S. PLATTE

 BLACK MOUNTAIN           8920    10.1      -M      *    16.1      -M      *
 CROW CREEK               8330      .5      .0      *    12.5    14.1    89
 DEADMAN HILL            10220    18.4    18.9    97     19.6    21.3    92
                                                -----                  -----
                Basin wide percent               100*                    91


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .4      .0      *    13.4    17.5    77
 DIVIDE PEAK              8880    11.7    16.3    72     21.8    25.0    87
 ELK RIVER                8700     9.3    10.1    92     20.0    23.4    85
 LITTLE SNAKE RIVER       8915    18.2    21.0    87     29.7    33.7    88
 OLD BATTLE              10000    30.1    35.8    84     33.0    40.2    82
 SAGE CREEK BASIN         7850      -M      .2      *    11.5    16.6    69
 SANDSTONE RS             8150     1.7     3.2    53     14.5    21.3    68
 WHISKEY PARK             8950    23.1    27.1    85     30.3    32.3    94
                                                -----                  -----
                Basin wide percent                83                     83


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     8.5     8.7    98     12.1    15.8    77
 BLIND BULL SUM           8650    20.8    22.6    92     16.4    21.9    75
 EAST RIM DIVIDE          7930      .1     6.9     1     10.5    13.3    79
 ELKHART PARK G.S.        9400     8.8    10.0    88     11.7    15.6    75
 GROS VENTRE SUMMIT       8750     8.6    10.2    84     13.2    15.1    87
 GUNSIGHT PASS            9820    11.9    11.7   102     13.9    16.5    84
 KENDALL R.S.             7740      .0      .7     0*    11.9    15.9    75
 LOOMIS PARK              8240     5.6     8.4    67     15.6    19.5    80
 NEW FORK LAKE            8340      .6     4.0    15      8.2    12.6    65
 POCKET CREEK             9360     8.3      -M      *    11.9      -M      *
 SNIDER BASIN             8060      .0     7.9     0     15.2    16.0    95
 SPRING CREEK DIVIDE      9000    24.2    24.1   100     25.3    26.8    94
 TRIPLE PEAK              8500    16.2    15.4   105     26.3    28.7    92
                                                -----                  -----
                Basin wide percent                81                     83


LOWER GREEN RIVER

 BLACKS FORK JCT          8870     4.7      -M      *    12.8      -M      *
 BUCK PASTURE             9700    11.1      -M      *    18.2      -M      *
 EF BLACKS FORK GS        9308     9.5      -M      *    13.2      -M      *
 HAMS FORK                7840      .0      .5     0*    11.5    13.5    85
 HEWINTA                  9519     7.3     3.4   215     15.4    16.8    92
 HICKERSON PARK           9145     4.4     1.8   244     12.4    12.5    99
 HOLE-IN-ROCK             9150     6.4     1.0   640     13.4    12.0   112
 INDIAN CREEK             9425    20.2    21.3    95     21.4    25.6    84
 KELLEY R.S.              8180     7.0     9.2    76     15.7    20.7    76
 SPIRIT LK               10223    10.7      -M      *    17.7      -M      *
 STEEL CREEK PARK        10200    15.8    17.6    90     18.6    19.8    94
                                                -----                  -----
                Basin wide percent               111                     90


UPPER BEAR RIVER

 BEAR RIVER RS            8500      .1      -M      *    13.4      -M      *
 BUG LAKE                 7950     8.5    12.8    66     18.2    22.3    82
 BURTS MILLER RANCH       8000      .2      -M      *     8.8      -M      *
 CHALK CREEK #1           8993    18.1    22.5    80     24.4    29.3    83
 HAYDEN FORK              9212     5.0     7.1    70     19.8    24.5    81
 KELLEY R.S.              8180     7.0     9.2    76     15.7    20.7    76
 LILY LAKE                9156     9.6     7.8   123     15.3    20.2    76
 MONTE CRISTO             8960    17.5    23.3    75     24.9    30.1    83
 SALT RIVER SUMMIT        7760     4.5     6.2    73     16.0    18.8    85
                                                -----                  -----
                Basin wide percent                79                     81

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


 -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 wide percent 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.

Reference period for comparison of conditions is 1981-2010.

Provisional data, subject to revision.