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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: APRIL 27 , 1999 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    19.4    12.1   161     28.9    24.9   117 
 COTTONWOOD CREEK         7600    25.0    20.9   120     31.2    27.9   112 
 GRANITE CREEK            6770    19.4    14.2   136     24.4    26.5    93 
 GRASSY LAKE              7265    43.0    34.9   124     44.8    41.4   108 
 GROS VENTRE SUMMIT       8775    16.9    14.5   117     17.4    17.9    97 
 LEWIS LAKE DIVIDE        7860    40.8    35.0   117     42.8    42.2   102 
 PHILLIPS BENCH           8200    35.8    29.9   120     34.3    33.3   103 
 SALT RIVER SUMMIT        7600    16.2    11.6   139     20.5    19.0   108 
 SNAKE RIVER STATION      6920    18.4    17.0   109     27.9    29.2    96 
 SPRING CREEK DIVIDE      9000    34.4    29.7   117     31.9    30.5   105 
 THUMB DIVIDE             7980    22.5    15.7   144     24.7    23.4   106 
 TOGWOTEE PASS            9580      -M    28.0      *    31.7    31.7   101 
 TWO OCEAN PLATEAU        9360    40.7    27.4   149     34.3    34.3   100 
 WILLOW CREEK             8450    33.8    31.9   106     41.9    35.8   118 
                                                -----                  -----
                Basin wide percent of average    125                    105 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    26.9    25.9   104     26.2    20.9   125 
 BLACK BEAR               7950      -M    39.9      *    49.2    45.9   107 
 CANYON                   7940    16.9    11.6   145     20.7    16.2   129 
 FISHER CREEK             9100    37.2    38.7    97     39.8    41.7    96 
 MADISON PLATEAU          7750      -M    24.4      *    34.4    29.5   117 
 NORTHEAST ENTRANCE       7350     8.5     6.8   126     15.2    13.7   111 
 PARKER PEAK              9400    27.4    23.7   117       -M    17.9      *
 SYLVAN LAKE              8420    27.5    23.9   116     30.7    22.0   140 
 THUMB DIVIDE             7980    22.5    15.7   144     24.7    23.4   106 
 TWO OCEAN PLATEAU        9360    40.7    27.4   149     34.3    34.3   100 
 WHISKEY CREEK            6800    21.7    16.0   136     26.2    24.7   107 
 WHITE MILL               8700    29.7    26.2   114     26.9    32.2    84 
 WOLVERINE                7650    11.0     9.1   120     14.1    15.0    95 
                                                -----                  -----
                Basin wide percent of average    120                    108 


WIND RIVER

 BURROUGHS CREEK          8750    18.2    13.6   134     19.9    19.2   105 
 COLD SPRINGS             9630    14.7     7.3   202     18.2    12.9   143 
 DEER PARK                9700    25.2      -M      *      -M      -M      *
 HOBBS PARK              10100    27.4    17.7   155     24.7    16.9   147 
 LITTLE WARM              9620    17.5    11.2   157     19.9    16.0   125 
 SOUTH PASS               9040    24.9    18.0   139     26.4    20.2   131 
 ST. LAWRENCE ALT         8620    13.7     6.0   233       -M    12.2      *
 TOGWOTEE PASS            9580      -M    28.0      *    31.7    31.7   101 
 TOWNSEND CREEK           8700      -M     9.9      *      -M    15.2      *
                                                -----                  -----
                Basin wide percent of average    158                    121 


BIGHORN BASIN

 BALD MTN.                9375    23.0    23.7    98     21.4    20.4   105 
 BEAR TRAP MEADOW         7900     2.8     5.0    58     13.0    10.4   127 
 BLACKWATER               9780    34.4    25.5   135     28.0    20.4   138 
 BONE SPRINGS DIV         9350    21.2    18.4   116     21.2    17.9   119 
 EVENING STAR             9200    36.2    30.5   119     37.9    25.5   149 
 GRAVE SPRINGS            8550    11.6    11.5   102     15.5    12.1   128 
 KIRWIN                   9550    15.5    11.6   134     17.7    13.0   137 
 MARQUETTE                8760    15.5     8.7   179     16.5    13.0   127 
 MIDDLE POWDER            7760    18.5    14.6   127     20.9    14.5   145 
 OWL CREEK                8975     9.0     3.8   235      9.7     8.0   123 
 POWDER RIVER PASS        9480    13.5    10.9   125     18.2    14.4   127 
 SHELL CREEK              9580    18.9    16.9   112     17.9    15.6   115 
 SYLVAN LAKE              8420    27.5    23.9   116     30.7    22.0   140 
 SYLVAN ROAD              8120      -M     8.7      *      -M    18.4      *
 TIMBER CREEK             7950     9.5     6.3   152     12.6     9.7   130 
 YOUNTS PEAK              8350    21.7    18.4   118     20.7    19.0   109 
                                                -----                  -----
                Basin wide percent of average    122                    129 


SHOSHONE RIVER

 BLACKWATER               9780    34.4    25.5   135     28.0    20.4   138 
 EVENING STAR             9200    36.2    30.5   119     37.9    25.5   149 
 KIRWIN                   9550    15.5    11.6   134     17.7    13.0   137 
 MARQUETTE                8760    15.5     8.7   179     16.5    13.0   127 
 SYLVAN LAKE              8420    27.5    23.9   116     30.7    22.0   140 
 SYLVAN ROAD              8120      -M     8.7      *      -M    18.4      *
 YOUNTS PEAK              8350    21.7    18.4   118     20.7    19.0   109 
                                                -----                  -----
                Basin wide percent of average    128                    135 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     2.8     5.0    58     13.0    10.4   127 
 BIG GOOSE                7990    11.1      -M      *    16.0      -M      *
 BONE SPRINGS DIV         9350    21.2    18.4   116     21.2    17.9   119 
 BURGESS JUNCTION         7880    12.5    13.5    94     15.4    14.1   109 
 CLOUD PEAK RESERVOIR     9860    22.0    17.5   126     20.9    16.7   126 
 DOME LAKE                8880      -M    15.0      *    15.9    16.0    99 
 GRAVE SPRINGS            8550    11.6    11.5   102     15.5    12.1   128 
 HANSEN SAWMILL           8760     6.8     7.1    96     13.0    10.0   130 
 MIDDLE POWDER            7760    18.5    14.6   127     20.9    14.5   145 
 POWDER RIVER PASS        9480    13.5    10.9   125     18.2    14.4   127 
 SUCKER CREEK             8880    15.1    13.7   111     18.7    16.2   117 
 TIE CREEK                6870      -M      -M      *      -M    13.5      *
                                                -----                  -----
                Basin wide percent of average    111                    122 


BELLE FOURCHE

 BLIND PARK               6890     2.9    10.1    29     17.9    13.4   135 
 NORTH RAPID CREEK        6130     4.1      -M      *    16.2      -M      *
 WARREN PEAK              6520    10.2    10.1   101     13.2    10.0   133 
                                                -----                  -----
                Basin wide percent of average     65                    134 


UPPER N. PLATTE RIVER

 COLUMBINE                9400    18.5    22.7    82     26.9    27.7    98 
 DIVIDE PEAK              8800    22.5    20.0   113     29.4    26.9   110 
 ELK RIVER                8700    16.4    17.4    95     26.2    21.9   121 
 JOE WRIGHT              10120    23.7    24.7    96     30.5    29.7   104 
 NORTH FRENCH CREEK      10100    38.2    29.2   131     36.5    27.5   133 
 OLD BATTLE              10000    36.5    37.8    97     42.8    35.0   123 
 SOUTH BRUSH CREEK        8400    10.2    11.4    91     22.9    20.2   114 
 TOWER                   10500    54.3    50.7   108     45.3    42.3   108 
 WEBBER SPRINGS           9200    22.2    26.7    84     31.0    29.9   104 
 WILLOW CREEK PASS        9540    15.0    13.5   112     14.2    15.1    95 
                                                -----                  -----
                Basin wide percent of average    102                    111 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    23.5    29.0    82     28.9    23.4   125 
 CASPER MTN.              7900    15.5    18.2    86     21.0    18.2   116 
 DEADMAN HILL            10220    20.4    18.9   108     21.5    20.7   105 
 DEER PARK                9700    25.2      -M      *      -M      -M      *
 LAPRELE CREEK            8320      .0     7.3     0     19.0    14.5   132 
 RENO HILL                8400    18.2    14.0   130     24.2    22.0   110 
 ROACH                    9700    19.2    18.2   105     24.7    25.2    99 
 SAND LAKE               10080    44.9    36.9   122     36.2    24.4   149 
 SOUTH PASS               9040    24.9    18.0   139     26.4    20.2   131 
 WINDY PEAK               7840     8.6     8.4   104     16.5    12.0   139 
                                                -----                  -----
                Basin wide percent of average    104                    122 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     7.8     6.5   122     21.4    18.2   119 
 DIVIDE PEAK              8800    22.5    20.0   113     29.4    26.9   110 
 OLD BATTLE              10000    36.5    37.8    97     42.8    35.0   123 
 SANDSTONE RS             8150    10.7    11.2    96     24.4    22.5   109 
 WHISKEY PARK             8950    30.9    29.9   104     34.8    33.3   105 
                                                -----                  -----
                Basin wide percent of average    104                    113 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    17.0    14.4   119     17.7    18.4    97 
 BLIND BULL SUM           8650    30.7    24.9   124     24.2    26.7    91 
 EAST RIM DIVIDE          7930    14.7    15.0    99     15.6    17.2    92 
 ELKHART PARK G.S.        9400    15.5    14.4   108     17.0    18.0    95 
 GROS VENTRE SUMMIT       8775    16.9    14.5   117     17.4    17.9    97 
 KENDALL R.S.             7740    14.1    11.4   125     18.2    17.4   105 
 LOOMIS PARK              8240      -M    15.6      *    22.2    21.2   105 
 NEW FORK LAKE            8340    12.9     9.5   135     14.0    16.2    86 
 SNIDER BASIN             8250    19.9    13.7   146     20.0    17.0   118 
 SPRING CREEK DIVIDE      9000    34.4    29.7   117     31.9    30.5   105 
 TRIPLE PEAK              8500    30.4    25.5   120     33.3    34.7    96 
                                                -----                  -----
                Basin wide percent of average    120                     99 


LOWER GREEN RIVER

 HAMS FORK                7840    12.7     5.8   219     15.2    15.0   102 
 HEWINTA                  9500    12.4     6.3   196     17.0    16.0   107 
 HICKERSON PARK           9150     6.0     3.9   152     13.0    12.0   109 
 HOLE-IN-ROCK             9150     9.2     3.3   279     13.5    12.0   113 
 INDIAN CREEK             9425    35.7    29.4   122     30.2    28.9   105 
 KELLEY R.S.              8180    17.5    15.7   112     21.7    21.2   103 
 STEEL CREEK PARK        10100    18.4    18.7    98     20.2    15.7   129 
                                                -----                  -----
                Basin wide percent of average    135                    109 


UPPER BEAR RIVER

 BUG LAKE                 7950    24.0    17.0   142     24.5    22.4   110 
 HAYDEN FORK              9400    12.7     7.8   165     23.4    22.5   105 
 KELLEY R.S.              8180    17.5    15.7   112     21.7    21.2   103 
 LILY LAKE                9050    12.5     9.9   127     20.9    17.7   119 
 MONTE CRISTO             8960    33.8    27.0   126     31.7    29.7   107 
 SALT RIVER SUMMIT        7600    16.2    11.6   139     20.5    19.0   108 
 TRIAL LAKE               9960    22.4    24.5    92     25.4    27.9    92 
                                                -----                  -----
                Basin wide percent of average    123                    106 

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


-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.