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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 WEDNESDAY: APRIL 28 , 1999 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    18.4    11.7   158     28.9    25.0   116 
 COTTONWOOD CREEK         7600    24.9    20.7   121     31.4    28.0   113 
 GRANITE CREEK            6770    18.7    14.0   135     24.5    26.7    93 
 GRASSY LAKE              7265    42.8    34.8   124     44.8    41.7   108 
 GROS VENTRE SUMMIT       8775    16.9    14.4   119     17.4    18.0    97 
 LEWIS LAKE DIVIDE        7860    40.7    34.9   117     42.8    42.3   102 
 PHILLIPS BENCH           8200    36.4    29.9   123     34.3    33.4   103 
 SALT RIVER SUMMIT        7600    16.0    11.5   141     20.7    19.2   108 
 SNAKE RIVER STATION      6920    17.4    16.9   103     27.9    29.2    96 
 SPRING CREEK DIVIDE      9000    34.5    29.7   117     32.2    30.7   105 
 THUMB DIVIDE             7980      -M    15.6      *      -M    23.4      *
 TOGWOTEE PASS            9580      -M    28.2      *    31.7    31.7   100 
 TWO OCEAN PLATEAU        9360    38.8    27.5   142     34.4    34.4   100 
 WILLOW CREEK             8450    34.2    31.9   107     42.3    35.9   118 
                                                -----                  -----
                Basin wide percent of average    123                    105 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    25.7    26.0    99     26.2    21.0   125 
 BLACK BEAR               7950      -M    39.9      *    49.2    46.0   107 
 CANYON                   7940    16.7    11.5   147     20.7    16.2   128 
 FISHER CREEK             9100    38.4    38.7   100     40.3    41.8    97 
 MADISON PLATEAU          7750      -M    24.2      *    34.5    29.7   117 
 NORTHEAST ENTRANCE       7350     8.0     6.5   122     15.5    13.9   113 
 PARKER PEAK              9400    27.2    23.7   115       -M    18.0      *
 SYLVAN LAKE              8420    27.2    23.9   114     30.7    22.2   139 
 THUMB DIVIDE             7980      -M    15.6      *      -M    23.4      *
 TWO OCEAN PLATEAU        9360    38.8    27.5   142     34.4    34.4   100 
 WHISKEY CREEK            6800    21.4    15.9   136     26.4    24.7   107 
 WHITE MILL               8700    30.0    26.4   115     27.4    32.3    85 
 WOLVERINE                7650    10.0     8.9   114     14.1    15.0    95 
                                                -----                  -----
                Basin wide percent of average    117                    108 


WIND RIVER

 BURROUGHS CREEK          8750    18.2    13.5   136     19.9    19.2   104 
 COLD SPRINGS             9630    14.6     7.3   203     18.2    13.0   142 
 DEER PARK                9700    25.2      -M      *    30.5      -M      *
 HOBBS PARK              10100    27.4    17.9   154     24.7    17.0   146 
 LITTLE WARM              9620    17.7    11.0   161     19.9    16.2   124 
 SOUTH PASS               9040    24.9    18.2   138       -M    20.4      *
 ST. LAWRENCE ALT         8620    13.6     5.8   235       -M    12.4      *
 TOGWOTEE PASS            9580      -M    28.2      *    31.7    31.7   100 
 TOWNSEND CREEK           8700      -M     9.7      *      -M    15.4      *
                                                -----                  -----
                Basin wide percent of average    159                    119 


BIGHORN BASIN

 BALD MTN.                9375    22.9    23.9    97     21.5    20.5   105 
 BEAR TRAP MEADOW         7900     2.7     4.8    55     13.0    10.5   125 
 BLACKWATER               9780    34.5    25.7   135     28.0    20.4   138 
 BONE SPRINGS DIV         9350    21.2    18.4   115     21.2    17.9   119 
 EVENING STAR             9200    36.3    30.7   119     38.0    25.7   149 
 GRAVE SPRINGS            8550    11.5    11.5   100     15.5    12.2   128 
 KIRWIN                   9550    15.5    11.6   133     17.7    13.1   136 
 MARQUETTE                8760    15.5     8.7   179     16.5    13.2   126 
 MIDDLE POWDER            7760    18.2    14.6   124     21.0    14.6   144 
 OWL CREEK                8975     8.9     3.8   238      9.9     8.0   123 
 POWDER RIVER PASS        9480    13.5    10.9   125     18.2    14.5   127 
 SHELL CREEK              9580    18.7    16.9   111     18.0    15.7   115 
 SYLVAN LAKE              8420    27.2    23.9   114     30.7    22.2   139 
 SYLVAN ROAD              8120    14.2     8.5   168     21.2    18.4   116 
 TIMBER CREEK             7950     9.4     6.3   151     12.6     9.9   129 
 YOUNTS PEAK              8350    21.5    18.4   117     20.7    19.2   109 
                                                -----                  -----
                Basin wide percent of average    123                    127 


SHOSHONE RIVER

 BLACKWATER               9780    34.5    25.7   135     28.0    20.4   138 
 EVENING STAR             9200    36.3    30.7   119     38.0    25.7   149 
 KIRWIN                   9550    15.5    11.6   133     17.7    13.1   136 
 MARQUETTE                8760    15.5     8.7   179     16.5    13.2   126 
 SYLVAN LAKE              8420    27.2    23.9   114     30.7    22.2   139 
 SYLVAN ROAD              8120    14.2     8.5   168     21.2    18.4   116 
 YOUNTS PEAK              8350    21.5    18.4   117     20.7    19.2   109 
                                                -----                  -----
                Basin wide percent of average    130                    132 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     2.7     4.8    55     13.0    10.5   125 
 BIG GOOSE                7990    11.0      -M      *    16.0      -M      *
 BONE SPRINGS DIV         9350    21.2    18.4   115     21.2    17.9   119 
 BURGESS JUNCTION         7880    12.4    13.5    92     15.5    14.2   109 
 CLOUD PEAK RESERVOIR     9860    22.2    17.7   126     21.0    16.9   125 
 DOME LAKE                8880      -M    15.0      *    15.9    16.2    99 
 GRAVE SPRINGS            8550    11.5    11.5   100     15.5    12.2   128 
 HANSEN SAWMILL           8760     6.6     7.1    93     13.0    10.1   129 
 MIDDLE POWDER            7760    18.2    14.6   124     21.0    14.6   144 
 POWDER RIVER PASS        9480    13.5    10.9   125     18.2    14.5   127 
 SUCKER CREEK             8880    15.0    13.9   108     18.9    16.2   117 
 TIE CREEK                6870      -M      -M      *      -M    13.6      *
                                                -----                  -----
                Basin wide percent of average    110                    121 


BELLE FOURCHE

 BLIND PARK               6890     2.0    10.0    21     17.9    13.5   132 
 NORTH RAPID CREEK        6130     3.4      -M      *    16.4      -M      *
 WARREN PEAK              6520     9.6    10.0    96     13.2    10.1   131 
                                                -----                  -----
                Basin wide percent of average     59                    132 


UPPER N. PLATTE RIVER

 COLUMBINE                9400    18.2    22.7    81     26.9    27.9    97 
 DIVIDE PEAK              8800    23.0    19.9   117     29.7    26.9   111 
 ELK RIVER                8700    16.4    17.0    97     26.2    21.9   120 
 JOE WRIGHT              10120    23.7    24.7    96     30.5    29.9   103 
 NORTH FRENCH CREEK      10100    38.3    29.2   131     36.7    27.7   133 
 OLD BATTLE              10000    36.8    37.8    98     42.9    35.3   122 
 SOUTH BRUSH CREEK        8400    10.1    11.1    91     22.9    20.2   114 
 TOWER                   10500    54.4    50.8   108     45.8    42.7   108 
 WEBBER SPRINGS           9200    22.0    26.5    84     31.4    30.2   104 
 WILLOW CREEK PASS        9540    15.0    13.5   112     14.2    15.2    94 
                                                -----                  -----
                Basin wide percent of average    102                    111 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    23.4    29.0    81     29.0    23.4   124 
 CASPER MTN.              7900    15.5    18.2    86     21.2    18.4   116 
 DEADMAN HILL            10220    20.2    18.9   107     21.7    20.7   105 
 DEER PARK                9700    25.2      -M      *    30.5      -M      *
 LAPRELE CREEK            8320      .0     7.0     0     19.2    14.5   132 
 RENO HILL                8400    18.2    13.9   132     24.2    22.2   110 
 ROACH                    9700    19.0    18.2   105     24.9    25.4    98 
 SAND LAKE               10080    45.3    37.0   123     36.3    24.4   149 
 SOUTH PASS               9040    24.9    18.2   138       -M    20.4      *
 WINDY PEAK               7840     8.5     8.2   103     16.7    12.0   139 
                                                -----                  -----
                Basin wide percent of average    104                    120 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     7.3     6.0   122     21.5    18.2   119 
 DIVIDE PEAK              8800    23.0    19.9   117     29.7    26.9   111 
 OLD BATTLE              10000    36.8    37.8    98     42.9    35.3   122 
 SANDSTONE RS             8150    10.5    11.0    96     24.4    22.7   108 
 WHISKEY PARK             8950    31.5    29.9   106     34.8    33.5   104 
                                                -----                  -----
                Basin wide percent of average    105                    113 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    17.2    14.2   121     17.9    18.4    97 
 BLIND BULL SUM           8650    30.9    24.4   128     24.4    26.7    92 
 EAST RIM DIVIDE          7930    14.5    15.0    97     15.7    17.2    92 
 ELKHART PARK G.S.        9400    15.5    14.2   110     17.0    18.2    94 
 GROS VENTRE SUMMIT       8775    16.9    14.4   119     17.4    18.0    97 
 KENDALL R.S.             7740    13.7    11.1   124     18.2    17.5   105 
 LOOMIS PARK              8240      -M    15.5      *    22.2    21.2   105 
 NEW FORK LAKE            8340    12.7     9.5   134     14.0    16.4    86 
 SNIDER BASIN             8250    20.0    13.5   149     20.2    17.2   118 
 SPRING CREEK DIVIDE      9000    34.5    29.7   117     32.2    30.7   105 
 TRIPLE PEAK              8500    30.2    25.4   119     33.3    34.8    96 
                                                -----                  -----
                Basin wide percent of average    121                     99 


LOWER GREEN RIVER

 HAMS FORK                7840    12.5     5.8   214     15.4    15.1   102 
 HEWINTA                  9500    12.7     6.0   212     17.4    16.0   109 
 HICKERSON PARK           9150     6.1     3.7   170     13.4    12.1   110 
 HOLE-IN-ROCK             9150     9.5     3.2   304     13.7    12.1   114 
 INDIAN CREEK             9425    35.9    29.2   123     30.4    29.0   105 
 KELLEY R.S.              8180    17.9    15.5   115     22.2    21.2   105 
 STEEL CREEK PARK        10100    18.9    18.9   100     20.5    15.9   130 
                                                -----                  -----
                Basin wide percent of average    138                    110 


UPPER BEAR RIVER

 BUG LAKE                 7950    24.4    16.9   146     24.9    22.4   112 
 HAYDEN FORK              9400    13.1     7.5   178     23.7    22.7   105 
 KELLEY R.S.              8180    17.9    15.5   115     22.2    21.2   105 
 LILY LAKE                9050    13.0     9.5   137     21.5    17.7   122 
 MONTE CRISTO             8960    34.8    26.9   130     32.7    29.9   110 
 SALT RIVER SUMMIT        7600    16.0    11.5   141     20.7    19.2   108 
 TRIAL LAKE               9960    23.0    24.4    95     25.9    27.9    93 
                                                -----                  -----
                Basin wide percent of average    128                    107 

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


-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.