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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 3 , 2009
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     9.6    11.9    81     22.4    24.5    91
 COTTONWOOD CREEK         7670    27.5    19.4   142     37.0    32.1   115
 GRAND TARGHEE            9260    53.9      -M      *    40.9      -M      *
 GRANITE CREEK            6770    11.5    12.5    92     23.9    22.5   106
 GRASSY LAKE              7265    32.7    33.0    99     40.4    41.0    99
 GROS VENTRE SUMMIT       8750    14.0    13.1   107     18.5    15.3   121
 GUNSIGHT PASS            9820    17.5      -M      *    19.9      -M      *
 LEWIS LAKE DIVIDE        7850    35.5    34.3   103     38.7    41.8    93
 PHILLIPS BENCH           8200    30.6    29.2   105     34.3    33.2   103
 SALT RIVER SUMMIT        7760    13.8    10.3   134     19.8    21.7    91
 SNAKE RIVER STATION      6920    12.7    11.8   108     26.8    25.6   105
 SPRING CREEK DIVIDE      9000    32.5    28.4   114     31.6    30.3   104
 THUMB DIVIDE             7980    20.4    14.6   140     25.4    22.1   115
 TOGWOTEE PASS            9580    31.7    28.0   113     34.7    29.1   119
 TWO OCEAN PLATEAU        9240    44.8    31.8   141     34.7    32.2   108
 WILLOW CREEK             8380    35.7    30.4   117     46.5    37.9   123
                                                -----                  -----
                Basin wide percent of average    114                    106


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    26.6    25.9   103     24.8    23.6   105
 BLACK BEAR               8170    40.7    39.8   102     41.8    46.0    91
 CANYON                   7870    14.6    11.0   133     18.6    17.8   104
 FISHER CREEK             9100    40.0    37.7   106     40.3    42.1    96
 MADISON PLATEAU          7750    25.6    24.0   107     29.6    30.5    97
 NORTHEAST ENTRANCE       7350     5.4     6.7    81     15.9    14.9   107
 PARKER PEAK              9400    32.1    24.5   131     22.6    19.6   115
 SYLVAN LAKE              8420    22.3    23.5    95     27.9    24.8   112
 THUMB DIVIDE             7980    20.4    14.6   140     25.4    22.1   115
 TWO OCEAN PLATEAU        9240    44.8    31.8   141     34.7    32.2   108
 WHISKEY CREEK            6800    18.8    14.9   126     24.4    24.3   100
 WHITE MILL               8700    27.4    26.3   104     27.8    31.3    89
 WOLVERINE                7650     9.3     6.9   135     15.3    15.3   100
                                                -----                  -----
                Basin wide percent of average    114                    101


WIND RIVER

 BURROUGHS CREEK          8750    18.7    13.4   140     20.5    19.4   106
 COLD SPRINGS             9630     9.7     4.8   202     15.1    14.0   108
 DEER PARK                9700    15.5    18.5    84     22.1    27.1    82
 HOBBS PARK              10100    18.4    18.0   102     20.2    17.1   118
 LITTLE WARM              9370    13.6    10.8   126     18.9    16.9   112
 SOUTH PASS               9040    15.7    17.8    88     19.6    22.8    86
 ST. LAWRENCE ALT         8620     8.0     6.0   133     14.5    12.2   119
 TOGWOTEE PASS            9580    31.7    28.0   113     34.7    29.1   119
 TOWNSEND CREEK           8700    11.7     8.8   133     17.2    15.6   110
                                                -----                  -----
                Basin wide percent of average    113                    105


BIGHORN BASIN

 BALD MTN.                9380    19.9    23.5    85     18.0    21.5    84
 BEAR TRAP MEADOW         8200     5.8     2.3   252     11.7    11.0   106
 BLACKWATER               9780    30.1    28.9   104     27.8    24.8   112
 BONE SPRINGS DIV         9350    17.8    18.3    97     17.1    18.4    93
 EVENING STAR             9200    32.2    33.3    97     35.9    30.0   120
 GRAVE SPRINGS            8550     9.7    11.0    88     12.2    13.2    92
 KIRWIN                   9550    15.9    12.9   123     18.7    14.3   131
 MARQUETTE                8760     9.2    11.2    82     12.6    13.8    91
 MIDDLE POWDER            7760    12.0    14.2    85     12.5    15.9    79
 OWL CREEK                8975     5.2     3.9   133      9.8     8.3   118
 POWDER RIVER PASS        9480    12.6    10.5   120     18.2    15.9   114
 SHELL CREEK              9580    18.1    16.8   108     18.2    16.9   108
 SYLVAN LAKE              8420    22.3    23.5    95     27.9    24.8   112
 SYLVAN ROAD              7120     6.7     7.8    86     22.5    20.6   109
 TIMBER CREEK             7950     5.4     4.8   113     11.9    10.6   112
 YOUNTS PEAK              8350    20.5    18.1   113     19.3    18.9   102
                                                -----                  -----
                Basin wide percent of average    101                    106


SHOSHONE RIVER

 BLACKWATER               9780    30.1    28.9   104     27.8    24.8   112
 EVENING STAR             9200    32.2    33.3    97     35.9    30.0   120
 KIRWIN                   9550    15.9    12.9   123     18.7    14.3   131
 MARQUETTE                8760     9.2    11.2    82     12.6    13.8    91
 SYLVAN LAKE              8420    22.3    23.5    95     27.9    24.8   112
 SYLVAN ROAD              7120     6.7     7.8    86     22.5    20.6   109
 YOUNTS PEAK              8350    20.5    18.1   113     19.3    18.9   102
                                                -----                  -----
                Basin wide percent of average    101                    112


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     5.8     2.3   252     11.7    11.0   106
 BIG GOOSE                7990    10.8    11.5    94     15.7    13.0   121
 BONE SPRINGS DIV         9350    17.8    18.3    97     17.1    18.4    93
 BURGESS JUNCTION         7880    13.4    13.1   102     15.4    15.5    99
 CLOUD PEAK RESERVOIR     9860    19.7    16.2   122     20.7    17.3   120
 DOME LAKE                8880    12.8    13.3    96     18.6    16.9   110
 GRAVE SPRINGS            8550     9.7    11.0    88     12.2    13.2    92
 HANSEN SAWMILL           8360     4.0     4.7    85     12.9    11.1   116
 MIDDLE POWDER            7760    12.0    14.2    85     12.5    15.9    79
 POWDER RIVER PASS        9480    12.6    10.5   120     18.2    15.9   114
 SUCKER CREEK             8880    15.8    12.9   122     20.5    17.6   116
 TIE CREEK                6870     4.1     3.9   105     17.2    13.6   126
                                                -----                  -----
                Basin wide percent of average    105                    107


BELLE FOURCHE

 BLIND PARK               6890      -M     4.0      *    17.1    14.3   120
 COLE CANYON              5910     4.7     4.5   104     14.8     9.6   154
 NORTH RAPID CREEK        6130     1.9     3.4    56     16.8    11.5   146
                                                -----                  -----
                Basin wide percent of average     84                    138


UPPER N. PLATTE RIVER

 COLUMBINE                9160    18.0    20.5    88     32.1    29.3   110
 DIVIDE PEAK              8880    26.9    19.0   142     33.0    24.4   135
 ELK RIVER                8700    12.6    14.5    87     25.5    23.2   110
 JOE WRIGHT              10120    27.2    25.1   108     34.1    30.3   113
 NORTH FRENCH CREEK      10130      -M    34.5      *      -M    29.9      *
 OLD BATTLE              10000    40.5    37.0   109     46.5    40.1   116
 SAGE CREEK BASIN         7850    10.3    11.0    94     19.2    14.2   135
 SOUTH BRUSH CREEK        8440     9.4    10.8    87     22.2    20.3   109
 TOWER                   10500    50.7    52.3    97     49.1    45.3   108
 WEBBER SPRINGS           9250    24.9    24.8   100     35.4    31.3   113
 WILLOW CREEK PASS        9540    13.2    14.1    94     15.3    15.8    97
                                                -----                  -----
                Basin wide percent of average    102                    114


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    26.1    28.1    93     27.1    27.1   100
 CASPER MTN.              7900    14.1    16.9    83     17.5    19.7    89
 DEADMAN HILL            10220    22.6    19.7   115     23.6    21.1   112
 DEER PARK                9700    15.5    18.5    84     22.1    27.1    82
 LAPRELE CREEK            8375     8.8     6.9   128     16.6    16.6   100
 RENO HILL                8400    15.6    14.5   108     21.1    20.4   103
 ROACH                    9700    18.2    18.3    99     24.0    22.6   106
 SAND LAKE               10050    36.8    37.0    99     36.0    29.5   122
 SOUTH PASS               9040    15.7    17.8    88     19.6    22.8    86
 WINDY PEAK               7900     9.4     4.7   200     14.8    13.6   109
                                                -----                  -----
                Basin wide percent of average    100                    101


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     2.2     4.3    51     22.7    18.7   121
 DIVIDE PEAK              8880    26.9    19.0   142     33.0    24.4   135
 OLD BATTLE              10000    40.5    37.0   109     46.5    40.1   116
 SANDSTONE RS             8150    12.9     9.1   142     25.0    22.0   114
 WHISKEY PARK             8950    32.4    30.4   107     40.2    34.0   118
                                                -----                  -----
                Basin wide percent of average    115                    120


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    13.3    13.2   101     16.1    16.0   101
 BLIND BULL SUM           8650    30.7    27.7   111     23.9    25.3    94
 EAST RIM DIVIDE          7930     4.6    13.0    35     14.2    14.0   101
 ELKHART PARK G.S.        9400    14.8    12.6   117     18.2    16.1   113
 GROS VENTRE SUMMIT       8750    14.0    13.1   107     18.5    15.3   121
 GUNSIGHT PASS            9820    17.5      -M      *    19.9      -M      *
 KENDALL R.S.             7740     5.6     9.6    58     16.5    16.6    99
 LOOMIS PARK              8240    12.8    14.0    91     21.5    20.0   108
 NEW FORK LAKE            8340     8.8     8.2   107     13.5    13.5   100
 SNIDER BASIN             8060    13.0    12.4   105     17.5    18.6    94
 SPRING CREEK DIVIDE      9000    32.5    28.4   114     31.6    30.3   104
 TRIPLE PEAK              8500    23.5    23.4   100     31.3    28.8   109
                                                -----                  -----
                Basin wide percent of average     99                    104


LOWER GREEN RIVER

 HAMS FORK                7840     6.2     5.6   111     15.1    14.8   102
 HEWINTA                  9519     4.8     9.0    53     17.1    17.9    96
 HICKERSON PARK           9145     3.5     5.4    65     13.3    10.3   129
 HOLE-IN-ROCK             9150     3.7     4.5    82     12.7     9.8   130
 INDIAN CREEK             9425      -M    28.1      *    26.4    29.6    89
 KELLEY R.S.              8180    14.9    13.8   108     21.5    23.7    91
 STEEL CREEK PARK        10200    17.3    18.7    93     20.8    20.3   102
                                                -----                  -----
                Basin wide percent of average     88                    100


UPPER BEAR RIVER

 BUG LAKE                 7950    17.2    17.6    98     21.4    22.5    95
 HAYDEN FORK              9212    10.0    12.6    79     27.0    25.3   107
 KELLEY R.S.              8180    14.9    13.8   108     21.5    23.7    91
 LILY LAKE                9156    11.7    10.8   108     21.4    21.2   101
 MONTE CRISTO             8960    26.9    28.0    96     31.7    30.4   104
 SALT RIVER SUMMIT        7760    13.8    10.3   134     19.8    21.7    91
 TRIAL LAKE               9992    26.1    26.4    99     29.2    29.6    99
                                                -----                  -----
                Basin wide percent of average    101                     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.