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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 TUESDAY: MAY 4 , 1999 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    15.4     9.5   162     29.7    25.5   117 
 COTTONWOOD CREEK         7600    22.5    18.9   120     33.3    28.5   117 
 GRANITE CREEK            6770    16.4    11.9   139     26.9    27.2    99 
 GRASSY LAKE              7265    39.2    32.5   121     47.2    42.4   112 
 GROS VENTRE SUMMIT       8775    16.4    13.1   126     18.7    18.4   102 
 LEWIS LAKE DIVIDE        7860    39.3    33.4   118     44.0    43.2   103 
 PHILLIPS BENCH           8200    35.3    28.7   123     36.2    34.0   107 
 SALT RIVER SUMMIT        7600    13.6     8.5   161     21.4    19.5   110 
 SNAKE RIVER STATION      6920    13.5    15.5    88     28.9    29.7    97 
 SPRING CREEK DIVIDE      9000    36.8    28.9   128     34.3    31.2   110 
 THUMB DIVIDE             7980    19.2    14.4   134     25.5    23.9   107 
 TOGWOTEE PASS            9580      -M    27.9      *    33.0    32.3   103 
 TWO OCEAN PLATEAU        9360    40.3    27.4   147     35.3    35.2   101 
 WILLOW CREEK             8450    31.2    31.2   101     45.3    36.7   124 
                                                -----                  -----
                Basin wide percent of average    124                    108 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    28.2    25.9   109     27.4    21.7   127 
 BLACK BEAR               7950      -M    39.3      *    51.3    46.9   110 
 CANYON                   7940    14.6    10.0   146     21.2    16.7   128 
 FISHER CREEK             9100      -M    38.5      *    41.8    42.8    98 
 MADISON PLATEAU          7750      -M    22.9      *    36.3    30.4   120 
 NORTHEAST ENTRANCE       7350     4.8     5.3    91     16.4    14.2   115 
 PARKER PEAK              9400    26.7    23.5   114       -M    18.7      *
 SYLVAN LAKE              8420    24.5    23.2   106     31.7    22.7   140 
 THUMB DIVIDE             7980    19.2    14.4   134     25.5    23.9   107 
 TWO OCEAN PLATEAU        9360    40.3    27.4   147     35.3    35.2   101 
 WHISKEY CREEK            6800    19.7    14.0   141     27.9    25.2   111 
 WHITE MILL               8700    30.4    26.2   117     28.5    33.0    87 
 WOLVERINE                7650     6.5     7.1    91     15.0    15.5    97 
                                                -----                  -----
                Basin wide percent of average    122                    110 


WIND RIVER

 BURROUGHS CREEK          8750    18.7    11.7   159     21.5    19.7   110 
 COLD SPRINGS             9630    19.4     6.0   324       -M    13.5      *
 DEER PARK                9700    25.9      -M      *    31.9      -M      *
 HOBBS PARK              10100    29.2    17.9   165       -M    17.7      *
 LITTLE WARM              9620      -M     9.5      *    23.0    16.7   139 
 SOUTH PASS               9040    24.9    17.9   140     29.4    21.0   141 
 ST. LAWRENCE ALT         8620    14.1     4.8   294     20.7    12.9   161 
 TOGWOTEE PASS            9580      -M    27.9      *    33.0    32.3   103 
 TOWNSEND CREEK           8700    19.5     8.9   222     25.2    16.0   158 
                                                -----                  -----
                Basin wide percent of average    188                    129 


BIGHORN BASIN

 BALD MTN.                9375    21.9    24.2    91     21.9    21.4   103 
 BEAR TRAP MEADOW         7900     1.2     3.8    30     14.5    11.0   132 
 BLACKWATER               9780    35.0    25.7   137     28.9    21.0   138 
 BONE SPRINGS DIV         9350    19.9    18.2   110     21.4    18.5   116 
 EVENING STAR             9200    36.8    30.7   120     39.5    26.4   151 
 GRAVE SPRINGS            8550    10.7    11.5    94     16.9    12.9   132 
 KIRWIN                   9550    16.5    11.5   145     19.4    13.6   142 
 MARQUETTE                8760    17.0     8.5   203     18.9    14.0   136 
 MIDDLE POWDER            7760    15.7    14.7   107     22.2    15.2   146 
 OWL CREEK                8975    10.1     2.9   349     12.2     8.5   146 
 POWDER RIVER PASS        9480    11.9     9.6   123     19.5    15.1   130 
 SHELL CREEK              9580    17.7    17.0   104     18.4    16.4   113 
 SYLVAN LAKE              8420    24.5    23.2   106     31.7    22.7   140 
 SYLVAN ROAD              8120    10.1     7.1   143     21.7    19.0   114 
 TIMBER CREEK             7950    10.1     5.3   191     15.5    10.5   150 
 YOUNTS PEAK              8350    21.4    17.9   121     21.4    19.7   109 
                                                -----                  -----
                Basin wide percent of average    122                    130 


SHOSHONE RIVER

 BLACKWATER               9780    35.0    25.7   137     28.9    21.0   138 
 EVENING STAR             9200    36.8    30.7   120     39.5    26.4   151 
 KIRWIN                   9550    16.5    11.5   145     19.4    13.6   142 
 MARQUETTE                8760    17.0     8.5   203     18.9    14.0   136 
 SYLVAN LAKE              8420    24.5    23.2   106     31.7    22.7   140 
 SYLVAN ROAD              8120    10.1     7.1   143     21.7    19.0   114 
 YOUNTS PEAK              8350    21.4    17.9   121     21.4    19.7   109 
                                                -----                  -----
                Basin wide percent of average    130                    133 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     1.2     3.8    30     14.5    11.0   132 
 BIG GOOSE                7990     9.7      -M      *    16.9      -M      *
 BONE SPRINGS DIV         9350    19.9    18.2   110     21.4    18.5   116 
 BURGESS JUNCTION         7880    10.2    13.0    79     15.6    14.9   106 
 CLOUD PEAK RESERVOIR     9860    23.9    17.4   137     23.4    17.7   133 
 DOME LAKE                8880      -M    14.0      *    16.5    16.9    99 
 GRAVE SPRINGS            8550    10.7    11.5    94     16.9    12.9   132 
 HANSEN SAWMILL           8760     5.5     6.3    88     15.4    10.6   145 
 MIDDLE POWDER            7760    15.7    14.7   107     22.2    15.2   146 
 POWDER RIVER PASS        9480    11.9     9.6   123     19.5    15.1   130 
 SUCKER CREEK             8880    13.6    13.1   104     19.2    16.9   114 
 TIE CREEK                6870      -M      -M      *      -M    14.2      *
                                                -----                  -----
                Basin wide percent of average    105                    124 


BELLE FOURCHE

 BLIND PARK               6890      .0     8.6     0     18.0    14.4   126 
 NORTH RAPID CREEK        6130      .5      -M      *    16.5      -M      *
 WARREN PEAK              6520     3.8     8.6    45     13.2    10.6   125 
                                                -----                  -----
                Basin wide percent of average     23                    126 


UPPER N. PLATTE RIVER

 COLUMBINE                9400    16.7    20.4    82     27.9    28.4    99 
 DIVIDE PEAK              8800    21.5    17.9   121     30.7    27.7   111 
 ELK RIVER                8700    14.1    14.6    97     27.4    22.4   122 
 JOE WRIGHT              10120    23.2    24.5    95     31.4    30.9   102 
 NORTH FRENCH CREEK      10100    39.3    28.9   136     38.0    28.5   134 
 OLD BATTLE              10000    38.8    38.0   103     44.4    36.2   123 
 SOUTH BRUSH CREEK        8400     9.6     9.6   100     23.2    20.9   111 
 TOWER                   10500    56.3    51.2   111     47.2    43.9   108 
 WEBBER SPRINGS           9200    21.9    24.9    88     32.5    31.0   105 
 WILLOW CREEK PASS        9540    15.6    13.0   121     15.0    15.7    95 
                                                -----                  -----
                Basin wide percent of average    106                    112 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    28.2    28.2   101     30.7    24.2   127 
 CASPER MTN.              7900    12.5    16.4    77     21.4    19.2   112 
 DEADMAN HILL            10220    21.7    19.0   115     23.2    21.5   108 
 DEER PARK                9700    25.9      -M      *    31.9      -M      *
 LAPRELE CREEK            8320      .0     5.8     0     19.9    15.1   132 
 RENO HILL                8400    14.9    12.5   120     24.7    22.7   109 
 ROACH                    9700      -M    17.7      *    25.4    26.4    97 
 SAND LAKE               10080    46.3    36.9   126     36.8    25.2   147 
 SOUTH PASS               9040    24.9    17.9   140     29.4    21.0   141 
 WINDY PEAK               7840     5.5     7.0    78     17.9    12.6   142 
                                                -----                  -----
                Basin wide percent of average    108                    123 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     1.7     3.8    43     22.0    18.9   118 
 DIVIDE PEAK              8800    21.5    17.9   121     30.7    27.7   111 
 OLD BATTLE              10000    38.8    38.0   103     44.4    36.2   123 
 SANDSTONE RS             8150     6.1     8.2    75     24.9    23.4   107 
 WHISKEY PARK             8950    31.5    28.7   110     36.4    34.5   106 
                                                -----                  -----
                Basin wide percent of average    104                    113 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    16.0    13.1   123     18.5    18.9    99 
 BLIND BULL SUM           8650    32.3    22.7   143     26.9    27.2    99 
 EAST RIM DIVIDE          7930    14.7    14.5   103     17.4    17.5   100 
 ELKHART PARK G.S.        9400    16.0    13.2   122     18.2    18.4    99 
 GROS VENTRE SUMMIT       8775    16.4    13.1   126     18.7    18.4   102 
 KENDALL R.S.             7740    11.5     8.5   137     19.2    17.9   108 
 LOOMIS PARK              8240      -M    14.4      *    23.9    21.7   111 
 NEW FORK LAKE            8340    12.0     8.5   142     15.1    16.7    91 
 SNIDER BASIN             8250    19.7    12.1   163     22.0    17.4   127 
 SPRING CREEK DIVIDE      9000    36.8    28.9   128     34.3    31.2   110 
 TRIPLE PEAK              8500    31.9    24.2   132     36.9    35.4   105 
                                                -----                  -----
                Basin wide percent of average    131                    105 


LOWER GREEN RIVER

 HAMS FORK                7840    10.0     4.5   221     17.4    15.5   113 
 HEWINTA                  9500    13.0     4.3   310     18.4    16.7   111 
 HICKERSON PARK           9150     6.5     2.5   261     14.2    12.6   113 
 HOLE-IN-ROCK             9150     9.1     2.0   455     14.5    12.6   116 
 INDIAN CREEK             9425    37.5    28.2   134     32.7    29.5   111 
 KELLEY R.S.              8180    16.7    14.0   120     23.4    21.7   108 
 STEEL CREEK PARK        10100    20.9    18.5   113     22.2    16.5   135 
                                                -----                  -----
                Basin wide percent of average    154                    115 


UPPER BEAR RIVER

 BUG LAKE                 7950    25.5    14.9   173     27.9    22.9   122 
 HAYDEN FORK              9400    14.1     5.5   262     25.9    23.4   111 
 KELLEY R.S.              8180    16.7    14.0   120     23.4    21.7   108 
 LILY LAKE                9050    13.9     8.1   171     23.4    18.4   127 
 MONTE CRISTO             8960    37.9    25.4   150     35.7    30.7   116 
 SALT RIVER SUMMIT        7600    13.6     8.5   161     21.4    19.5   110 
 TRIAL LAKE               9960    27.0    23.4   116     29.5    28.7   103 
                                                -----                  -----
                Basin wide percent of average    150                    114 

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


-M = Missing data
 * = Data may not provide a valid measure of conditions.
 
     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.