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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

At 11:08p, 5/20/18
Temperature 46.8°F
Wind 0.0 mph


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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 18 , 2010
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030      .0     5.6     0     15.9    25.8    62
 COTTONWOOD CREEK         7670    13.1    13.0   101     27.6    34.1    81
 GRAND TARGHEE            9260    44.4      -M      *    35.1      -M      *
 GRANITE CREEK            6770      .0     7.1     0     15.7    23.7    66
 GRASSY LAKE              7265    15.4    25.3    61     31.0    43.1    72
 GROS VENTRE SUMMIT       8750     6.2     9.2    67     11.9    16.5    72
 GUNSIGHT PASS            9820    11.1      -M      *    15.1      -M      *
 LEWIS LAKE DIVIDE        7850    16.1    27.9    58     26.3    43.7    60
 PHILLIPS BENCH           8200    14.6    23.1    63     25.0    35.0    71
 SALT RIVER SUMMIT        7760     3.2     3.9    82     15.8    23.0    69
 SNAKE RIVER STATION      6920      .0     4.7     0     19.3    27.1    71
 SPRING CREEK DIVIDE      9000    22.2    23.8    93     23.6    31.8    74
 THUMB DIVIDE             7980     1.4     8.8    16     16.7    23.6    71
 TOGWOTEE PASS            9580    22.7    27.0    84       -M    31.0      *
 TWO OCEAN PLATEAU        9240    25.1    30.3    83     22.3    34.4    65
 WILLOW CREEK             8380    19.4    24.2    80     34.9    40.5    86
                                                -----                  -----
                Basin wide percent of average     68                     71


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    16.5    25.2    65     18.0    25.4    71
 BLACK BEAR               8170    24.2    35.8    68     31.7    48.3    66
 CANYON                   7870     4.3     6.3    68     14.1    19.2    73
 FISHER CREEK             9100    25.1    36.0    70     29.6    44.4    67
 MADISON PLATEAU          7750    14.0    18.6    75     25.1    32.4    77
 NORTHEAST ENTRANCE       7350      .0     2.6     0     11.6    16.2    72
 PARKER PEAK              9400    19.3    23.7    81     16.9    21.5    79
 SYLVAN LAKE              8420    12.0    19.6    61     22.1    26.9    82
 THUMB DIVIDE             7980     1.4     8.8    16     16.7    23.6    71
 TWO OCEAN PLATEAU        9240    25.1    30.3    83     22.3    34.4    65
 WHISKEY CREEK            6800     6.3     8.7    72     16.2    25.8    63
 WHITE MILL               8700    17.7    24.2    73     20.5    33.3    62
 WOLVERINE                7650      .0     2.4     0      9.6    16.9    57
                                                -----                  -----
                Basin wide percent of average     68                     69


WIND RIVER

 BURROUGHS CREEK          8750    10.7     9.9   108     13.2    21.1    63
 COLD SPRINGS             9630     8.4     2.9   290     17.7    15.7   113
 DEER PARK                9700    21.9    16.7   131     27.5    29.1    95
 HOBBS PARK              10100    25.1    16.3   154     26.6    19.2   139
 LITTLE WARM              9370     9.4     7.1   132     14.5    18.6    78
 SOUTH PASS               9040    18.8    13.0   145     25.6    24.7   104
 ST. LAWRENCE ALT         8620     8.5     3.1   274     19.2    13.9   138
 TOGWOTEE PASS            9580    22.7    27.0    84       -M    31.0      *
 TOWNSEND CREEK           8700    15.3     5.2   294     24.1    17.4   139
                                                -----                  -----
                Basin wide percent of average    139                    105


BIGHORN BASIN

 BALD MTN.                9380    18.0    22.7    79     16.0    23.6    68
 BEAR TRAP MEADOW         8200     3.8      .4   950*    12.4    12.7    98
 BLACKWATER               9780    22.3    28.7    78     21.8    26.9    81
 BONE SPRINGS DIV         9350    14.2    15.7    90     15.4    20.5    75
 EVENING STAR             9200    19.4    32.0    61     26.3    32.3    81
 GRAVE SPRINGS            8550    11.0     6.7   164     16.8    14.8   114
 KIRWIN                   9550    12.3    10.6   116     15.7    16.0    98
 MARQUETTE                8760    13.9     8.4   165     16.8    16.0   105
 MIDDLE POWDER            7760    12.6    10.1   125     13.2    17.7    75
 OWL CREEK                8975     2.1     2.0   105     11.3     9.7   116
 POWDER RIVER PASS        9480     8.3     7.4   112     15.2    17.9    85
 SHELL CREEK              9580    15.0    16.0    94     16.1    18.9    85
 SYLVAN LAKE              8420    12.0    19.6    61     22.1    26.9    82
 SYLVAN ROAD              7120      .0     2.3     0     15.8    22.0    72
 TIMBER CREEK             7950     4.2     2.0   210     13.3    12.6   106
 YOUNTS PEAK              8350    11.1    14.6    76     13.3    20.5    65
                                                -----                  -----
                Basin wide percent of average     90                     85


SHOSHONE RIVER

 BLACKWATER               9780    22.3    28.7    78     21.8    26.9    81
 EVENING STAR             9200    19.4    32.0    61     26.3    32.3    81
 KIRWIN                   9550    12.3    10.6   116     15.7    16.0    98
 MARQUETTE                8760    13.9     8.4   165     16.8    16.0   105
 SYLVAN LAKE              8420    12.0    19.6    61     22.1    26.9    82
 SYLVAN ROAD              7120      .0     2.3     0     15.8    22.0    72
 YOUNTS PEAK              8350    11.1    14.6    76     13.3    20.5    65
                                                -----                  -----
                Basin wide percent of average     78                     82


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     3.8      .4   950*    12.4    12.7    98
 BIG GOOSE                7990    12.6     8.7   145     18.2    15.0   121
 BONE SPRINGS DIV         9350    14.2    15.7    90     15.4    20.5    75
 BURGESS JUNCTION         7880    13.6     9.3   146     16.6    17.2    97
 CLOUD PEAK RESERVOIR     9860    19.0    14.3   133     19.7    19.7   100
 DOME LAKE                8880    13.3     9.6   139     19.2    19.0   101
 GRAVE SPRINGS            8550    11.0     6.7   164     16.8    14.8   114
 HANSEN SAWMILL           8360     4.7     1.8   261     14.0    12.6   111
 MIDDLE POWDER            7760    12.6    10.1   125     13.2    17.7    75
 POWDER RIVER PASS        9480     8.3     7.4   112     15.2    17.9    85
 SUCKER CREEK             8880    17.1     9.4   182     21.5    19.8   109
 TIE CREEK                6870     5.7     1.2   475     18.6    15.6   119
                                                -----                  -----
                Basin wide percent of average    144                     99


BELLE FOURCHE

 BLIND PARK               6890      .0      .0   100*    18.3    16.2   113
 COLE CANYON              5910     2.5      .5   500*    17.1    11.4   150
 NORTH RAPID CREEK        6130      .0      .4     0*    17.0    12.9   132
                                                -----                  -----
                Basin wide percent of average    278*                   129


UPPER N. PLATTE RIVER

 COLUMBINE                9160    16.2    11.7   138     29.6    30.9    96
 DIVIDE PEAK              8880    18.0    11.6   155     29.8    26.1   114
 ELK RIVER                8700    12.4     6.5   191     26.3    24.7   106
 JOE WRIGHT              10120    25.4    23.4   109     30.4    32.8    93
 NORTH FRENCH CREEK      10130      -M    32.6      *      -M    32.3      *
 OLD BATTLE              10000    43.2    34.7   124     46.0    42.4   108
 SAGE CREEK BASIN         7850      .3     6.7     4     16.1    15.1   107
 SOUTH BRUSH CREEK        8440     9.8     5.8   169     25.4    22.1   115
 TOWER                   10500    43.4    51.0    85     43.4    48.0    90
 WEBBER SPRINGS           9250    24.6    16.7   147     36.2    33.2   109
 WILLOW CREEK PASS        9540    14.1    10.4   136     18.0    17.3   104
                                                -----                  -----
                Basin wide percent of average    116                    103


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    25.3    21.9   116     29.8    29.4   101
 CASPER MTN.              7900    15.2    10.7   142     20.1    22.1    91
 DEADMAN HILL            10220      -M    17.5      *      -M    23.1      *
 DEER PARK                9700    21.9    16.7   131     27.5    29.1    95
 LAPRELE CREEK            8375     5.5     3.1   177     18.7    18.5   101
 RENO HILL                8400    17.7     8.8   201     25.9    22.8   114
 ROACH                    9700    22.3    12.5   178     29.0    24.6   118
 SAND LAKE               10050    40.7    34.9   117     40.5    32.2   126
 SOUTH PASS               9040    18.8    13.0   145     25.6    24.7   104
 WINDY PEAK               7900     5.9     1.4   421     18.1    15.4   118
                                                -----                  -----
                Basin wide percent of average    141                    107


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0      .0   100*    19.0    19.9    95
 DIVIDE PEAK              8880    18.0    11.6   155     29.8    26.1   114
 OLD BATTLE              10000    43.2    34.7   124     46.0    42.4   108
 SANDSTONE RS             8150     1.4     3.1    45     22.0    23.6    93
 WHISKEY PARK             8950    27.2    25.4   107     39.5    36.2   109
                                                -----                  -----
                Basin wide percent of average    120                    105


UPPER GREEN RIVER

 BIG SANDY OPENING        9080      -M     8.2      *    12.5    17.4    72
 BLIND BULL SUM           8650    19.0    24.3    78     16.8    26.8    63
 EAST RIM DIVIDE          7930      .2     8.4     2      9.2    15.0    61
 ELKHART PARK G.S.        9400     6.5     8.8    74     11.6    17.6    66
 GROS VENTRE SUMMIT       8750     6.2     9.2    67     11.9    16.5    72
 GUNSIGHT PASS            9820    11.1      -M      *    15.1      -M      *
 KENDALL R.S.             7740      .1     2.7     4     10.8    17.7    61
 LOOMIS PARK              8240     1.5     8.9    17     13.1    21.3    62
 NEW FORK LAKE            8340      .1     3.1     3      9.5    14.7    65
 POCKET CREEK             9360     8.7      -M      *    14.5      -M      *
 SNIDER BASIN             8060     6.1     6.8    90     15.7    19.6    80
 SPRING CREEK DIVIDE      9000    22.2    23.8    93     23.6    31.8    74
 TRIPLE PEAK              8500    16.2    15.8   103     27.2    30.5    89
                                                -----                  -----
                Basin wide percent of average     70                     71


LOWER GREEN RIVER

 HAMS FORK                7840      .3      .4    75*    13.9    16.0    87
 HEWINTA                  9519     7.1     3.8   187     17.7    19.2    92
 HICKERSON PARK           9145     1.0     1.6    63     15.3    11.5   133
 HOLE-IN-ROCK             9150     1.1     1.4    79     15.1    11.1   136
 INDIAN CREEK             9425    20.0    22.9    87     22.4    31.2    72
 KELLEY R.S.              8180     6.4     8.2    78     17.6    25.0    70
 STEEL CREEK PARK        10200    21.0    17.6   119     22.0    21.8   101
                                                -----                  -----
                Basin wide percent of average    102                     91


UPPER BEAR RIVER

 BUG LAKE                 7950     9.8     9.7   101     19.2    23.9    80
 HAYDEN FORK              9212     4.6     6.5    71     23.8    27.0    88
 KELLEY R.S.              8180     6.4     8.2    78     17.6    25.0    70
 LILY LAKE                9156    10.1     5.6   180     20.0    22.8    88
 MONTE CRISTO             8960    17.0    21.6    79     24.5    32.5    75
 SALT RIVER SUMMIT        7760     3.2     3.9    82     15.8    23.0    69
 TRIAL LAKE               9992    19.6    22.4    88     21.5    31.6    68
                                                -----                  -----
                Basin wide percent of average     91                     77

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


 -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.