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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 MONDAY: MAY 12 , 2008
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    14.1     7.9   178     31.0    25.3   123
 COTTONWOOD CREEK         7670    21.8    15.3   142     29.7    33.5    89
 GRAND TARGHEE            9260    58.0      -M      *    40.9      -M      *
 GRANITE CREEK            6770    13.6     9.0   151     25.5    23.3   109
 GRASSY LAKE              7265      -M    28.3      *    49.4    42.4   117
 GROS VENTRE SUMMIT       8750    12.2    10.8   113     16.7    16.1   104
 GUNSIGHT PASS            9820    12.7      -M      *    17.9      -M      *
 LEWIS LAKE DIVIDE        7850    39.1    30.5   128     42.0    43.1    97
 PHILLIPS BENCH           8200    31.5    25.5   124     39.1    34.4   114
 SALT RIVER SUMMIT        7760    10.1     6.2   163     18.7    22.6    83
 SNAKE RIVER STATION      6920    13.5     7.2   188     31.6    26.6   119
 SPRING CREEK DIVIDE      9000    23.3    25.9    90     27.3    31.3    87
 THUMB DIVIDE             7980    14.7    10.9   135     23.7    23.1   103
 TOGWOTEE PASS            9580    30.9    27.8   111     35.0    30.4   115
 TWO OCEAN PLATEAU        9240      -M    31.1      *      -M    33.7      *
 WILLOW CREEK             8380    30.2    26.8   113     45.9    39.7   116
                                                -----                  -----
                Basin wide percent of average    125                    106


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    29.3    25.7   114     28.4    24.9   114
 BLACK BEAR               8170    48.0    37.5   128     48.8    47.6   103
 CANYON                   7870    16.2     8.0   202     24.2    18.7   129
 FISHER CREEK             9100    47.6    37.3   128     44.6    43.7   102
 MADISON PLATEAU          7750    31.2    20.9   149     37.3    31.7   118
 NORTHEAST ENTRANCE       7350     5.5     4.4   125     16.3    15.8   103
 PARKER PEAK              9400    32.9    24.2   136     29.9    20.9   143
 SYLVAN LAKE              8420    21.7    21.3   102     31.7    26.2   121
 THUMB DIVIDE             7980    14.7    10.9   135     23.7    23.1   103
 TWO OCEAN PLATEAU        9240      -M    31.1      *      -M    33.7      *
 WHISKEY CREEK            6800    18.9    11.3   167     28.7    25.3   113
 WHITE MILL               8700    32.1    25.5   126     32.1    32.7    98
 WOLVERINE                7650     6.0     4.2   143     17.0    16.4   104
                                                -----                  -----
                Basin wide percent of average    132                    111


WIND RIVER

 BURROUGHS CREEK          8750    15.7    11.1   141     21.3    20.5   104
 COLD SPRINGS             9630      .4     4.0    10     12.6    15.2    83
 DEER PARK                9700    15.7    17.0    92     24.1    28.4    85
 HOBBS PARK              10100    16.3    17.3    94     19.1    18.5   103
 LITTLE WARM              9370     8.7     8.5   102     17.6    18.1    97
 SOUTH PASS               9040    13.4    15.1    89     21.0    24.2    87
 ST. LAWRENCE ALT         8620     1.4     4.5    31     10.7    13.4    80
 TOGWOTEE PASS            9580    30.9    27.8   111     35.0    30.4   115
 TOWNSEND CREEK           8700     6.1     6.5    94     15.4    16.9    91
                                                -----                  -----
                Basin wide percent of average     97                     95


BIGHORN BASIN

 BALD MTN.                9380    20.0    23.5    85     19.6    23.0    85
 BEAR TRAP MEADOW         8200     4.6     1.1   418     12.5    12.1   103
 BLACKWATER               9780    31.0    28.8   108     29.3    26.2   112
 BONE SPRINGS DIV         9350    20.7    16.9   122     22.4    19.9   113
 EVENING STAR             9200    33.0    32.9   100     39.7    31.5   126
 GRAVE SPRINGS            8550    11.5     9.2   125     14.1    14.4    98
 KIRWIN                   9550    12.6    11.9   106     17.3    15.5   112
 MARQUETTE                8760     9.5     9.6    99     14.0    15.3    92
 MIDDLE POWDER            7760    15.4    11.9   129     14.0    17.1    82
 OWL CREEK                8975      .1     2.8     4      8.7     9.2    95
 POWDER RIVER PASS        9480    12.5     8.8   142     18.5    17.3   107
 SHELL CREEK              9580    19.0    16.7   114     20.0    18.3   109
 SYLVAN LAKE              8420    21.7    21.3   102     31.7    26.2   121
 SYLVAN ROAD              7120     4.9     3.7   132     24.3    21.6   112
 TIMBER CREEK             7950     3.0     2.8   107     11.4    12.0    95
 YOUNTS PEAK              8350    17.1    16.5   104     20.1    20.0   101
                                                -----                  -----
                Basin wide percent of average    108                    106


SHOSHONE RIVER

 BLACKWATER               9780    31.0    28.8   108     29.3    26.2   112
 EVENING STAR             9200    33.0    32.9   100     39.7    31.5   126
 KIRWIN                   9550    12.6    11.9   106     17.3    15.5   112
 MARQUETTE                8760     9.5     9.6    99     14.0    15.3    92
 SYLVAN LAKE              8420    21.7    21.3   102     31.7    26.2   121
 SYLVAN ROAD              7120     4.9     3.7   132     24.3    21.6   112
 YOUNTS PEAK              8350    17.1    16.5   104     20.1    20.0   101
                                                -----                  -----
                Basin wide percent of average    104                    113


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     4.6     1.1   418     12.5    12.1   103
 BIG GOOSE                7990    11.3     9.7   116     17.4    14.5   120
 BONE SPRINGS DIV         9350    20.7    16.9   122     22.4    19.9   113
 BURGESS JUNCTION         7880    16.4    11.1   148     19.2    16.7   115
 CLOUD PEAK RESERVOIR     9860    19.5    15.4   127     21.1    18.9   112
 DOME LAKE                8880    12.6    11.2   112     20.4    18.4   111
 GRAVE SPRINGS            8550    11.5     9.2   125     14.1    14.4    98
 HANSEN SAWMILL           8360     2.4     3.0    80     12.3    12.1   102
 MIDDLE POWDER            7760    15.4    11.9   129     14.0    17.1    82
 POWDER RIVER PASS        9480    12.5     8.8   142     18.5    17.3   107
 SUCKER CREEK             8880    17.4    11.0   158     22.8    19.1   119
 TIE CREEK                6870     5.4     2.1   257     16.4    15.0   109
                                                -----                  -----
                Basin wide percent of average    134                    108


BELLE FOURCHE

 BLIND PARK               6890     1.4      .8   175     16.2    15.6   104
 COLE CANYON              5910     4.3     1.2   358     14.2    10.9   130
 NORTH RAPID CREEK        6130     6.6      .9   733     16.2    12.5   130
                                                -----                  -----
                Basin wide percent of average    424                    119


UPPER N. PLATTE RIVER

 COLUMBINE                9160    22.5    15.1   149     34.4    30.4   113
 DIVIDE PEAK              8880    20.5    14.5   141     28.2    25.6   110
 ELK RIVER                8700    17.3     9.2   188     28.2    24.2   117
 JOE WRIGHT              10120    29.2    24.4   120     36.0    32.0   112
 NORTH FRENCH CREEK      10130    34.5    33.8   102     36.6    31.6   116
 OLD BATTLE              10000    39.2    36.4   108     47.0    41.7   113
 SAGE CREEK BASIN         7850     8.0     8.4    95     20.0    14.8   135
 SOUTH BRUSH CREEK        8440     5.7     7.6    75     21.0    21.5    98
 TOWER                   10500    51.0    52.1    98     49.9    47.3   105
 WEBBER SPRINGS           9250    24.9    20.0   124     37.1    32.6   114
 WILLOW CREEK PASS        9540    21.5    12.3   175     21.0    16.8   125
                                                -----                  -----
                Basin wide percent of average    117                    113


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    21.0    24.8    85     27.6    28.7    96
 CASPER MTN.              7900    16.5    13.2   125     20.6    21.3    97
 DEADMAN HILL            10220    21.3    18.7   114     25.0    22.5   111
 DEER PARK                9700    15.7    17.0    92     24.1    28.4    85
 LAPRELE CREEK            8375     4.4     4.3   102     16.1    17.9    90
 RENO HILL                8400    17.7    10.9   162     25.3    22.1   114
 ROACH                    9700    20.0    14.8   135     27.6    24.0   115
 SAND LAKE               10050    34.9    36.2    96     36.9    31.3   118
 SOUTH PASS               9040    13.4    15.1    89     21.0    24.2    87
 WINDY PEAK               7900     3.8     2.3   165     13.8    14.8    93
                                                -----                  -----
                Basin wide percent of average    107                    101


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .1     1.5     7     20.1    19.6   103
 DIVIDE PEAK              8880    20.5    14.5   141     28.2    25.6   110
 OLD BATTLE              10000    39.2    36.4   108     47.0    41.7   113
 SANDSTONE RS             8150    10.1     4.9   206     25.4    23.1   110
 WHISKEY PARK             8950    36.1    27.9   129     42.8    35.6   120
                                                -----                  -----
                Basin wide percent of average    124                    112


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    10.5    10.2   103     16.0    16.9    95
 BLIND BULL SUM           8650    27.7    25.8   107     20.5    26.3    78
 EAST RIM DIVIDE          7930     5.5    10.3    53     12.9    14.7    88
 ELKHART PARK G.S.        9400    10.1    10.3    98     14.0    17.1    82
 GROS VENTRE SUMMIT       8750    12.2    10.8   113     16.7    16.1   104
 GUNSIGHT PASS            9820    12.7      -M      *    17.9      -M      *
 KENDALL R.S.             7740     5.2     5.2   100     15.7    17.3    91
 LOOMIS PARK              8240    10.1    10.8    94     20.5    20.9    98
 NEW FORK LAKE            8340     4.6     4.9    94     11.4    14.3    80
 SNIDER BASIN             8060     8.1     8.9    91     16.1    19.3    83
 SPRING CREEK DIVIDE      9000    23.3    25.9    90     27.3    31.3    87
 TRIPLE PEAK              8500    21.8    18.9   115     33.3    30.0   111
                                                -----                  -----
                Basin wide percent of average     98                     91


LOWER GREEN RIVER

 HAMS FORK                7840     4.2     2.2   191     12.6    15.7    80
 HEWINTA                  9519     6.5     5.5   118     19.8    18.8   105
 HICKERSON PARK           9145      .3     2.8    11     11.3    11.1   102
 HOLE-IN-ROCK             9150      .2     2.3     9     11.9    10.7   111
 INDIAN CREEK             9425      -M    25.0      *      -M    30.7      *
 KELLEY R.S.              8180    12.3    10.3   119     21.0    24.6    85
 STEEL CREEK PARK        10200    19.4    18.6   104     21.9    21.4   102
                                                -----                  -----
                Basin wide percent of average    103                     96


UPPER BEAR RIVER

 BUG LAKE                 7950    14.7    12.5   118     19.7    23.5    84
 HAYDEN FORK              9212     8.3     8.6    97     27.0    26.4   102
 KELLEY R.S.              8180    12.3    10.3   119     21.0    24.6    85
 LILY LAKE                9156     9.0     7.4   122     21.0    22.3    94
 MONTE CRISTO             8960    25.2    24.1   105     30.2    31.9    95
 SALT RIVER SUMMIT        7760    10.1     6.2   163     18.7    22.6    83
 TRIAL LAKE               9992    21.3    24.3    88     28.4    30.9    92
                                                -----                  -----
                Basin wide percent of average    108                     91

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


 -M   = Missing data
  *   = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and

Total Precipitation values

If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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 average conditions is 1961-90.

Provisional data, subject to revision.