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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 4 , 2009
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     9.2    11.5    80     22.7    24.5    93
 COTTONWOOD CREEK         7670    27.6    19.0   145     37.5    32.2   116
 GRAND TARGHEE            9260    54.9      -M      *    41.6      -M      *
 GRANITE CREEK            6770    11.4    12.2    93     24.4    22.6   108
 GRASSY LAKE              7265    32.7    32.6   100     41.1    41.2   100
 GROS VENTRE SUMMIT       8750    14.0    12.9   109     18.6    15.4   121
 GUNSIGHT PASS            9820    17.8      -M      *    20.1      -M      *
 LEWIS LAKE DIVIDE        7850    36.7    34.0   108     39.8    41.9    95
 PHILLIPS BENCH           8200    30.6    28.9   106     34.6    33.4   104
 SALT RIVER SUMMIT        7760    13.7     9.9   138     20.0    21.8    92
 SNAKE RIVER STATION      6920    12.8    11.4   112     27.5    25.7   107
 SPRING CREEK DIVIDE      9000    32.8    28.3   116     31.9    30.4   105
 THUMB DIVIDE             7980    20.8    14.3   145     25.9    22.2   117
 TOGWOTEE PASS            9580    31.9    28.0   114     35.0    29.2   120
 TWO OCEAN PLATEAU        9240    45.8    31.8   144     35.4    32.4   109
 WILLOW CREEK             8380    36.2    30.1   120     47.1    38.0   124
                                                -----                  -----
                Basin wide percent of average    117                    107


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    26.8    26.0   103     24.9    23.8   105
 BLACK BEAR               8170    41.6    39.5   105     42.5    46.2    92
 CANYON                   7870    14.8    10.7   138     18.9    17.9   106
 FISHER CREEK             9100    40.9    37.7   108     40.6    42.2    96
 MADISON PLATEAU          7750    25.7    23.7   108     30.2    30.6    99
 NORTHEAST ENTRANCE       7350     5.2     6.3    83     16.3    15.0   109
 PARKER PEAK              9400    32.5    24.6   132     22.8    19.7   116
 SYLVAN LAKE              8420    22.8    23.4    97     28.5    25.0   114
 THUMB DIVIDE             7980    20.8    14.3   145     25.9    22.2   117
 TWO OCEAN PLATEAU        9240    45.8    31.8   144     35.4    32.4   109
 WHISKEY CREEK            6800    19.0    14.5   131     25.1    24.4   103
 WHITE MILL               8700    28.1    26.3   107     28.4    31.5    90
 WOLVERINE                7650     9.0     6.6   136     15.3    15.4    99
                                                -----                  -----
                Basin wide percent of average    117                    102


WIND RIVER

 BURROUGHS CREEK          8750    18.8    13.2   142     20.9    19.5   107
 COLD SPRINGS             9630     9.6     4.7   204     15.1    14.1   107
 DEER PARK                9700    15.6    18.1    86     22.3    27.2    82
 HOBBS PARK              10100    18.4    18.0   102     20.2    17.2   117
 LITTLE WARM              9370    13.4    10.5   128     19.0    17.0   112
 SOUTH PASS               9040    15.7    17.7    89     19.8    23.0    86
 ST. LAWRENCE ALT         8620     7.7     5.8   133     14.5    12.3   118
 TOGWOTEE PASS            9580    31.9    28.0   114     35.0    29.2   120
 TOWNSEND CREEK           8700    11.5     8.6   134     17.3    15.8   109
                                                -----                  -----
                Basin wide percent of average    114                    105


BIGHORN BASIN

 BALD MTN.                9380    20.8    23.5    89     18.6    21.6    86
 BEAR TRAP MEADOW         8200     5.8     2.1   276     12.0    11.1   108
 BLACKWATER               9780    30.6    29.0   106     28.1    25.0   112
 BONE SPRINGS DIV         9350    18.3    18.2   101     17.4    18.6    94
 EVENING STAR             9200    32.6    33.3    98     36.3    30.2   120
 GRAVE SPRINGS            8550     9.8    10.8    91     12.4    13.4    93
 KIRWIN                   9550    15.9    12.9   123     18.7    14.4   130
 MARQUETTE                8760     9.1    11.0    83     12.6    14.0    90
 MIDDLE POWDER            7760    12.1    14.0    86     12.7    16.0    79
 OWL CREEK                8975     5.0     3.8   132      9.9     8.4   118
 POWDER RIVER PASS        9480    12.8    10.2   125     18.5    16.1   115
 SHELL CREEK              9580    18.8    16.7   113     18.6    17.1   109
 SYLVAN LAKE              8420    22.8    23.4    97     28.5    25.0   114
 SYLVAN ROAD              7120     6.6     7.6    87     23.0    20.7   111
 TIMBER CREEK             7950     5.3     4.7   113     11.8    10.8   109
 YOUNTS PEAK              8350    20.8    18.1   115     19.4    19.0   102
                                                -----                  -----
                Basin wide percent of average    103                    106


SHOSHONE RIVER

 BLACKWATER               9780    30.6    29.0   106     28.1    25.0   112
 EVENING STAR             9200    32.6    33.3    98     36.3    30.2   120
 KIRWIN                   9550    15.9    12.9   123     18.7    14.4   130
 MARQUETTE                8760     9.1    11.0    83     12.6    14.0    90
 SYLVAN LAKE              8420    22.8    23.4    97     28.5    25.0   114
 SYLVAN ROAD              7120     6.6     7.6    87     23.0    20.7   111
 YOUNTS PEAK              8350    20.8    18.1   115     19.4    19.0   102
                                                -----                  -----
                Basin wide percent of average    102                    112


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     5.8     2.1   276     12.0    11.1   108
 BIG GOOSE                7990    11.0    11.3    97     15.9    13.2   120
 BONE SPRINGS DIV         9350    18.3    18.2   101     17.4    18.6    94
 BURGESS JUNCTION         7880    13.4    13.0   103     15.6    15.6   100
 CLOUD PEAK RESERVOIR     9860    19.7    16.2   122     21.0    17.4   121
 DOME LAKE                8880    12.7    13.1    97     18.8    17.1   110
 GRAVE SPRINGS            8550     9.8    10.8    91     12.4    13.4    93
 HANSEN SAWMILL           8360     3.9     4.6    85     12.9    11.2   115
 MIDDLE POWDER            7760    12.1    14.0    86     12.7    16.0    79
 POWDER RIVER PASS        9480    12.8    10.2   125     18.5    16.1   115
 SUCKER CREEK             8880    15.9    12.7   125     20.6    17.7   116
 TIE CREEK                6870     4.0     3.8   105     17.4    13.8   126
                                                -----                  -----
                Basin wide percent of average    107                    108


BELLE FOURCHE

 BLIND PARK               6890      .0     3.9     0     17.2    14.4   119
 COLE CANYON              5910     4.4     4.1   107     15.0     9.8   153
 NORTH RAPID CREEK        6130     1.3     3.1    42     16.9    11.6   146
                                                -----                  -----
                Basin wide percent of average     51                    137


UPPER N. PLATTE RIVER

 COLUMBINE                9160    17.5    20.0    88     32.3    29.4   110
 DIVIDE PEAK              8880    26.5    18.6   142     33.3    24.5   136
 ELK RIVER                8700    12.3    14.0    88     25.6    23.3   110
 JOE WRIGHT              10120    27.4    25.1   109     34.4    30.4   113
 NORTH FRENCH CREEK      10130    39.9    34.5   116     38.7    30.0   129
 OLD BATTLE              10000    41.2    37.1   111     46.8    40.2   116
 SAGE CREEK BASIN         7850     9.7    10.8    90     19.4    14.2   137
 SOUTH BRUSH CREEK        8440     9.3    10.5    89     22.5    20.4   110
 TOWER                   10500    51.5    52.4    98     49.5    45.6   109
 WEBBER SPRINGS           9250    24.5    24.5   100     35.5    31.4   113
 WILLOW CREEK PASS        9540    13.3    14.0    95     15.4    15.9    97
                                                -----                  -----
                Basin wide percent of average    104                    116


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    26.2    28.0    94     27.5    27.3   101
 CASPER MTN.              7900    14.2    16.6    86     17.6    19.9    88
 DEADMAN HILL            10220    22.9    19.7   116     23.6    21.2   111
 DEER PARK                9700    15.6    18.1    86     22.3    27.2    82
 LAPRELE CREEK            8375     8.9     6.6   135     16.7    16.7   100
 RENO HILL                8400    15.6    14.2   110     21.3    20.6   103
 ROACH                    9700    18.3    18.1   101     24.1    22.7   106
 SAND LAKE               10050    37.1    37.0   100     36.2    29.7   122
 SOUTH PASS               9040    15.7    17.7    89     19.8    23.0    86
 WINDY PEAK               7900     9.2     4.5   204     14.9    13.8   108
                                                -----                  -----
                Basin wide percent of average    102                    101


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     1.3     4.0    32     22.7    18.8   121
 DIVIDE PEAK              8880    26.5    18.6   142     33.3    24.5   136
 OLD BATTLE              10000    41.2    37.1   111     46.8    40.2   116
 SANDSTONE RS             8150    12.1     8.7   139     25.1    22.1   114
 WHISKEY PARK             8950    31.8    30.3   105     40.5    34.2   118
                                                -----                  -----
                Basin wide percent of average    114                    120


UPPER GREEN RIVER

 BIG SANDY OPENING        9080      -M    13.0      *    16.2    16.1   101
 BLIND BULL SUM           8650    31.3    27.6   113     24.3    25.4    96
 EAST RIM DIVIDE          7930     4.5    12.8    35     14.4    14.0   103
 ELKHART PARK G.S.        9400    15.0    12.5   120     18.6    16.2   115
 GROS VENTRE SUMMIT       8750    14.0    12.9   109     18.6    15.4   121
 GUNSIGHT PASS            9820    17.8      -M      *    20.1      -M      *
 KENDALL R.S.             7740     5.4     9.2    59     16.7    16.7   100
 LOOMIS PARK              8240    12.8    13.8    93     21.7    20.1   108
 NEW FORK LAKE            8340     8.9     7.9   113     13.8    13.6   101
 SNIDER BASIN             8060    12.8    12.1   106     17.7    18.7    95
 SPRING CREEK DIVIDE      9000    32.8    28.3   116     31.9    30.4   105
 TRIPLE PEAK              8500    23.6    23.1   102     31.7    28.9   110
                                                -----                  -----
                Basin wide percent of average    101                    105


LOWER GREEN RIVER

 HAMS FORK                7840     5.8     5.3   109     15.3    14.9   103
 HEWINTA                  9519     4.0     8.6    47     17.2    18.0    96
 HICKERSON PARK           9145     3.2     5.2    62     13.4    10.4   129
 HOLE-IN-ROCK             9150     3.2     4.3    74     12.8     9.9   129
 INDIAN CREEK             9425      -M    27.9      *    26.7    29.7    90
 KELLEY R.S.              8180    14.9    13.5   110     21.8    23.8    92
 STEEL CREEK PARK        10200    17.4    18.8    93     21.0    20.5   102
                                                -----                  -----
                Basin wide percent of average     87                    101


UPPER BEAR RIVER

 BUG LAKE                 7950    17.3    17.2   101     21.8    22.6    96
 HAYDEN FORK              9212     9.5    12.3    77     27.3    25.4   107
 KELLEY R.S.              8180    14.9    13.5   110     21.8    23.8    92
 LILY LAKE                9156    10.8    10.5   103     21.6    21.3   101
 MONTE CRISTO             8960    27.0    27.7    97     31.9    30.6   104
 SALT RIVER SUMMIT        7760    13.7     9.9   138     20.0    21.8    92
 TRIAL LAKE               9992    26.6    26.3   101     29.7    29.7   100
                                                -----                  -----
                Basin wide percent of average    102                     99

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


 -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.