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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 SUNDAY: MAY 15 , 2005
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030      .0     6.5     0     17.6    25.6    69
 COTTONWOOD CREEK         7600     9.4    13.9    68     28.6    33.7    85
 GRANITE CREEK            6770      .1     7.8     1     19.1    23.5    81
 GRASSY LAKE              7265    11.9    26.5    45     29.4    42.8    69
 GROS VENTRE SUMMIT       8750     8.6     9.9    87     14.0    16.4    85
 LEWIS LAKE DIVIDE        7850    13.0    29.0    45     25.9    43.3    60
 PHILLIPS BENCH           8200    20.3    24.1    84     28.2    34.7    81
 SALT RIVER SUMMIT        7600     5.1     4.9   104     21.1    22.7    93
 SNAKE RIVER STATION      6920      .2     5.7     4     16.2    26.8    60
 SPRING CREEK DIVIDE      9000    25.3    24.7   102     27.3    31.5    87
 THUMB DIVIDE             7980     2.9     9.7    30     15.8    23.3    68
 TOGWOTEE PASS            9580    19.4    27.4    71     21.7    30.7    71
 TWO OCEAN PLATEAU        9240    26.5    30.7    86     22.8    34.0    67
 WILLOW CREEK             8450    19.8    25.3    78     38.2    39.9    96
                                                -----                  -----
                Basin wide percent of average     66                     76


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    18.4    25.5    72     17.9    25.1    71
 BLACK BEAR               8170    31.7    36.5    87     36.1    47.8    76
 CANYON                   8090     2.4     7.1    34     12.8    19.0    67
 FISHER CREEK             9100    24.8    36.6    68     29.4    44.1    67
 MADISON PLATEAU          7750    16.0    19.5    82     24.8    32.2    77
 NORTHEAST ENTRANCE       7350      .0     3.3     0      9.9    16.1    61
 PARKER PEAK              9400    18.2    24.0    76     17.0    21.2    80
 SYLVAN LAKE              8420     8.9    20.3    44     20.6    26.6    77
 THUMB DIVIDE             7980     2.9     9.7    30     15.8    23.3    68
 TWO OCEAN PLATEAU        9240    26.5    30.7    86     22.8    34.0    67
 WHISKEY CREEK            6800     6.9     9.8    70     19.5    25.6    76
 WHITE MILL               8700    18.1    24.7    73     19.2    33.0    58
 WOLVERINE                7650      .1     3.2     3     10.9    16.6    66
                                                -----                  -----
                Basin wide percent of average     70                     70


WIND RIVER

 BURROUGHS CREEK          8750    11.3    10.4   109     15.0    20.8    72
 COLD SPRINGS             9630     4.3     3.3   130     14.5    15.3    95
 DEER PARK                9700    27.1    17.2   158     31.5    28.8   109
 HOBBS PARK              10100    20.3    16.7   122     20.8    18.8   111
 LITTLE WARM              9370     8.4     7.8   108     15.2    18.2    84
 SOUTH PASS               9040    19.3    14.1   137     26.5    24.2   110
 ST. LAWRENCE ALT         8620     4.8     3.7   130     14.9    13.5   110
 TOGWOTEE PASS            9580    19.4    27.4    71     21.7    30.7    71
 TOWNSEND CREEK           8700     7.9     5.7   139     19.6    17.0   115
                                                -----                  -----
                Basin wide percent of average    116                     96


BIGHORN BASIN

 BALD MTN.                9380    20.7    23.0    90     22.1    23.1    96
 BEAR TRAP MEADOW         8200     1.2      .7   171     12.8    12.4   103
 BLACKWATER               9780    18.9    28.8    66     19.4    26.6    73
 BONE SPRINGS DIV         9350    18.3    16.2   113     22.2    20.1   110
 EVENING STAR             9200    18.6    32.5    57     25.3    31.9    79
 GRAVE SPRINGS            8550     6.0     7.9    76     12.8    14.5    88
 KIRWIN                   9550    10.9    11.0    99     14.4    15.7    92
 MARQUETTE                8760     9.3     8.9   104     14.9    15.6    96
 MIDDLE POWDER            7760     7.5    11.1    68     11.0    17.3    64
 OWL CREEK                8975     3.9     2.3   170     12.0     9.5   126
 POWDER RIVER PASS        9480     8.5     8.1   105     17.8    17.5   102
 SHELL CREEK              9580    19.6    16.3   120     19.9    18.5   108
 SYLVAN LAKE              8420     8.9    20.3    44     20.6    26.6    77
 SYLVAN ROAD              7120      .1     2.7     4     13.1    21.8    60
 TIMBER CREEK             7950     3.4     2.2   155     12.0    12.3    98
 YOUNTS PEAK              8350     9.7    15.4    63     14.8    20.3    73
                                                -----                  -----
                Basin wide percent of average     80                     87


SHOSHONE RIVER

 BLACKWATER               9780    18.9    28.8    66     19.4    26.6    73
 EVENING STAR             9200    18.6    32.5    57     25.3    31.9    79
 KIRWIN                   9550    10.9    11.0    99     14.4    15.7    92
 MARQUETTE                8760     9.3     8.9   104     14.9    15.6    96
 SYLVAN LAKE              8420     8.9    20.3    44     20.6    26.6    77
 SYLVAN ROAD              7120      .1     2.7     4     13.1    21.8    60
 YOUNTS PEAK              8350     9.7    15.4    63     14.8    20.3    73
                                                -----                  -----
                Basin wide percent of average     64                     77


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     1.2      .7   171     12.8    12.4   103
 BIG GOOSE                7990    10.6     9.1   116     18.4    14.5   127
 BONE SPRINGS DIV         9350    18.3    16.2   113     22.2    20.1   110
 BURGESS JUNCTION         7880    10.9    10.2   107     17.4    16.8   104
 CLOUD PEAK RESERVOIR     9860    20.2    14.8   136     21.7    19.2   113
 DOME LAKE                8880    11.5    10.4   111     20.7    18.5   112
 GRAVE SPRINGS            8550     6.0     7.9    76     12.8    14.5    88
 HANSEN SAWMILL           8360     2.1     2.2    95     15.5    12.4   125
 MIDDLE POWDER            7760     7.5    11.1    68     11.0    17.3    64
 POWDER RIVER PASS        9480     8.5     8.1   105     17.8    17.5   102
 SUCKER CREEK             8880    14.9    10.2   146     22.1    19.3   115
 TIE CREEK                6870     1.3     1.3   100     18.9    15.2   124
                                                -----                  -----
                Basin wide percent of average    111                    107


BELLE FOURCHE

 BLIND PARK               6890      .0      .1     0*    12.9    15.9    81
 COLE CANYON              5910      .0     3.0     0     12.1      -M      *
 NORTH RAPID CREEK        6130      .0      .6     0*    11.0    12.6    87
                                                -----                  -----
                Basin wide percent of average      0*                    84


UPPER N. PLATTE RIVER

 COLUMBINE                9160     7.3    13.1    56       -M    30.6      *
 DIVIDE PEAK              8860    16.1    12.8   126     28.7    25.7   112
 ELK RIVER                8700    10.6     7.6   139     26.0    24.4   107
 JOE WRIGHT              10120    23.7    23.8   100     27.6    32.2    86
 NORTH FRENCH CREEK      10130    31.0    33.2    93     32.4    31.8   102
 OLD BATTLE               9920    41.7    35.5   117     33.4    41.8    80
 SAGE CREEK BASIN         7850      .1     7.4     1     19.2    14.9   129
 SOUTH BRUSH CREEK        8440     5.0     6.5    77     19.6    21.7    90
 TOWER                   10500    43.4    51.5    84     46.9    47.3    99
 WEBBER SPRINGS           9250    19.6    18.1   108     32.7    32.7   100
 WILLOW CREEK PASS        9540    16.2    11.2   145     16.4    17.1    96
                                                -----                  -----
                Basin wide percent of average     97                     98


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10220    20.0    23.1    87     24.2    28.9    84
 CASPER MTN.              7850     5.4    11.7    46     17.1    21.5    80
 DEADMAN HILL            10220    18.3    18.0   102     19.5    22.7    86
 DEER PARK                9700    27.1    17.2   158     31.5    28.8   109
 LAPRELE CREEK            8375      .0     3.6     0     14.4    18.1    80
 RENO HILL                8500     7.5     9.7    77     17.1    22.2    77
 ROACH                    9700    15.0    13.4   112     22.9    24.2    95
 SAND LAKE               10050    28.9    35.5    81     29.8    31.6    94
 SOUTH PASS               9040    19.3    14.1   137     26.5    24.2   110
 WINDY PEAK               7900      .8     1.7    47     12.2    15.1    81
                                                -----                  -----
                Basin wide percent of average     96                     91


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0      .6     0*    19.8    19.6   101
 DIVIDE PEAK              8860    16.1    12.8   126     28.7    25.7   112
 OLD BATTLE               9920    41.7    35.5   117     33.4    41.8    80
 SANDSTONE RS             8150     1.4     3.8    37     24.1    23.2   104
 WHISKEY PARK             8950    26.3    26.5    99     31.8    35.6    89
                                                -----                  -----
                Basin wide percent of average    108                     94


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    13.5     9.0   150     19.0    17.1   111
 BLIND BULL SUM           8900    19.0    24.9    76     20.4    26.5    77
 EAST RIM DIVIDE          7930      .1     9.2     1     13.8    14.9    93
 ELKHART PARK G.S.        9400    13.0     9.4   138     19.4    17.4   111
 GROS VENTRE SUMMIT       8750     8.6     9.9    87     14.0    16.4    85
 KENDALL R.S.             7740      .1     3.7     3     15.8    17.5    90
 LOOMIS PARK              8240     6.5     9.7    67     20.2    21.1    96
 NEW FORK LAKE            8340     5.2     3.8   137     15.2    14.5   105
 SNIDER BASIN             8060     5.3     7.7    69     16.5    19.4    85
 SPRING CREEK DIVIDE      9000    25.3    24.7   102     27.3    31.5    87
 TRIPLE PEAK              8500    10.9    17.1    64     25.2    30.1    84
                                                -----                  -----
                Basin wide percent of average     83                     91


LOWER GREEN RIVER

 HAMS FORK                7840      .1     1.1     9*    18.2    15.7   116
 HEWINTA                  9500     1.5     4.5    33     16.1    18.9    85
 HICKERSON PARK           9100      .0     2.1     0     13.7    11.3   121
 HOLE-IN-ROCK             9150      .0     1.7     0     13.0    10.8   120
 INDIAN CREEK             9425    32.7    23.7   138     30.8    30.9   100
 KELLEY R.S.              8180    11.8     9.1   130     24.4    24.8    98
 STEEL CREEK PARK        10100    20.0    18.1   110     20.7    21.6    96
                                                -----                  -----
                Basin wide percent of average    110                    102


UPPER BEAR RIVER

 BUG LAKE                 7950    17.6    10.9   161     28.5    23.6   121
 HAYDEN FORK              9100     7.5     7.3   103     30.2    26.6   114
 KELLEY R.S.              8180    11.8     9.1   130     24.4    24.8    98
 LILY LAKE                9050     8.7     6.3   138     24.1    22.5   107
 MONTE CRISTO             8960    30.9    22.7   136     37.2    32.0   116
 SALT RIVER SUMMIT        7600     5.1     4.9   104     21.1    22.7    93
 TRIAL LAKE               9960    34.4    23.2   148     37.2    31.2   119
                                                -----                  -----
                Basin wide percent of average    137                    111

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


 -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 1971-2000.

Provisional data, subject to revision.