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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 THURSDAY: MAY 8 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    22.3     7.8   286     39.1    25.8   152 
 COTTONWOOD CREEK         7600    30.8    17.0   181     39.6    28.9   137 
 GRANITE CREEK            6770    22.6    10.1   224     35.7    27.5   130 
 GRASSY LAKE              7265    46.2    30.6   151     61.3    42.9   143 
 GROS VENTRE SUMMIT       8775    21.7    12.0   181     23.2    18.6   125 
 LEWIS LAKE DIVIDE        7860    53.8    32.0   168     63.7    43.6   146 
 PHILLIPS BENCH           8200    42.9    27.4   157     51.0    34.4   148 
 SALT RIVER SUMMIT        7600    16.6     5.4   307     26.7    19.7   136 
 SNAKE RIVER STATION      6920    18.4    14.0   131     40.9    30.1   136 
 SPRING CREEK DIVIDE      9000    36.7    27.8   132     37.3    31.5   118 
 THUMB DIVIDE             7980    26.3    13.2   199     37.1    24.2   153 
 TOGWOTEE PASS            9580    38.3    27.2   141     39.8    32.7   122 
 TWO OCEAN PLATEAU        9360    48.6    27.0   180       -M    35.5      *
 WILLOW CREEK             8450    43.8    29.9   146     53.4    37.1   144 
                                                -----                  -----
                Basin wide percent of average    167                    138 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275      -M    25.5      *    35.2    22.1   159 
 BLACK BEAR               7950      -M    38.4      *      -M    47.4      *
 CANYON                   7940    19.8     8.7   228     29.6    16.9   175 
 FISHER CREEK             9100    60.5    38.1   159       -M    43.3      *
 MADISON PLATEAU          7750    40.0    21.4   187     46.2    30.7   150 
 NORTHEAST ENTRANCE       7350     6.6     4.3   153     23.4    14.5   161 
 PARKER PEAK              9400    38.4    23.2   166       -M    18.9      *
 SYLVAN LAKE              8420    31.3    22.2   141     37.2    23.2   160 
 THUMB DIVIDE             7980    26.3    13.2   199     37.1    24.2   153 
 TWO OCEAN PLATEAU        9360    48.6    27.0   180       -M    35.5      *
 WHISKEY CREEK            6800    21.0    12.4   169     35.2    25.5   138 
 WHITE MILL               8700    43.2    25.6   169       -M    33.5      *
 WOLVERINE                7650    10.1     5.6   180     19.0    15.9   119 
                                                -----                  -----
                Basin wide percent of average    171                    152 


WIND RIVER

 BURROUGHS CREEK          8750    22.4     9.9   226     28.9    20.1   144 
 CHRISTINA LAKE           9980    21.6    17.6   123     27.9    20.9   133 
 COLD SPRINGS             9630     7.8     4.8   163     16.6    13.8   120 
 HOBBS PARK              10100    21.7    17.5   124     19.6    18.1   108 
 LITTLE WARM              9620    17.6     7.9   223     24.4    17.0   144 
 SOUTH PASS               9040    26.1    17.3   151     30.1    21.4   141 
 ST. LAWRENCE ALT         8620     9.9     3.9   254     16.4    13.0   126 
 TOGWOTEE PASS            9580    38.3    27.2   141     39.8    32.7   122 
 TOWNSEND CREEK           8700    11.4     7.8   146     18.3    16.2   113 
                                                -----                  -----
                Basin wide percent of average    155                    128 


BIGHORN BASIN

 BALD MTN.                9375    26.4    24.3   109     22.9    21.8   105 
 BEAR TRAP MEADOW         7900     2.7     2.8    96     12.9    11.3   114 
 BLACKWATER               9780    43.1    25.3   170     34.1    21.4   159 
 BONE SPRINGS DIV         9350    21.7    17.5   124     21.4    19.0   113 
 EVENING STAR             9200    45.3    30.6   148     46.5    26.8   174 
 GRAVE SPRINGS            8550    12.0      -M      *    14.7    13.3   111 
 KIRWIN                   9550    16.9    10.9   155     20.2    14.0   144 
 LOST CREEK               8080    21.3    14.7   145     20.4    15.9   128 
 MARQUETTE                8760    14.1     8.1   174     16.2    14.4   112 
 MIDDLE POWDER            7760    17.6    14.4   122     18.8    15.6   121 
 OWL CREEK                8975     3.9     2.2   177      9.5     8.7   109 
 POWDER RIVER PASS        9480      -M     8.4      *    17.9    15.5   115 
 SHELL CREEK              9580    20.3    17.0   119     19.3    16.8   115 
 SYLVAN LAKE              8420    31.3    22.2   141     37.2    23.2   160 
 SYLVAN ROAD              8120    13.3     6.0   222     30.4    19.3   158 
 TIMBER CREEK             7950     5.2     4.2   124     11.6    10.9   106 
 YOUNTS PEAK              8350    24.1    17.1   141       -M    20.0      *
                                                -----                  -----
                Basin wide percent of average    141                    132 


SHOSHONE RIVER

 BLACKWATER               9780    43.1    25.3   170     34.1    21.4   159 
 EVENING STAR             9200    45.3    30.6   148     46.5    26.8   174 
 KIRWIN                   9550    16.9    10.9   155     20.2    14.0   144 
 MARQUETTE                8760    14.1     8.1   174     16.2    14.4   112 
 SYLVAN LAKE              8420    31.3    22.2   141     37.2    23.2   160 
 SYLVAN ROAD              8120    13.3     6.0   222     30.4    19.3   158 
 YOUNTS PEAK              8350    24.1    17.1   141       -M    20.0      *
                                                -----                  -----
                Basin wide percent of average    156                    155 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     2.7     2.8    96     12.9    11.3   114 
 BONE SPRINGS DIV         9350    21.7    17.5   124     21.4    19.0   113 
 BURGESS JUNCTION         7880    16.2    12.3   132     17.8    15.1   118 
 CLOUD PEAK RESERVOIR     9860    22.8    16.9   135     20.9    18.0   116 
 DOME LAKE                8880    16.3    12.7   128     19.8    17.3   114 
 GRAVE SPRINGS            8550    12.0      -M      *    14.7    13.3   111 
 HANSEN SAWMILL           8760     4.7     5.5    85     12.1    10.9   111 
 LOST CREEK               8080    21.3    14.7   145     20.4    15.9   128 
 MIDDLE POWDER            7760    17.6    14.4   122     18.8    15.6   121 
 POWDER RIVER PASS        9480      -M     8.4      *    17.9    15.5   115 
 SUCKER CREEK             8880    19.8    12.2   162     21.6    17.4   124 
 TIE CREEK                6870     6.3      -M      *    17.9    14.5   123 
                                                -----                  -----
                Basin wide percent of average    131                    118 


BELLE FOURCHE

 BLIND PARK               6890     5.2     7.1    73     19.6    14.8   132 
 NORTH RAPID CREEK        6130     8.2      -M      *    18.5      -M      *
 WARREN PEAK              6520    18.2     7.1   256       -M    11.0      *
                                                -----                  -----
                Basin wide percent of average    165                    132*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    26.0    18.1   144     38.3    28.7   133 
 DIVIDE PEAK              8800    24.9    15.9   157     29.9    28.1   106 
 ELK RIVER                8700    22.0    12.4   177     31.0    22.6   137 
 JOE WRIGHT              10120    35.5    24.2   147     37.5    31.3   120 
 NORTH FRENCH CREEK      10100    39.3    28.1   140     36.3    29.0   125 
 OLD BATTLE              10000    48.7    37.6   130     46.5    36.6   127 
 SOUTH BRUSH CREEK        8400     7.6     8.3    92     21.7    21.2   102 
 TOWER                   10500    31.3    51.0    61     59.7    44.6   134 
 WEBBER SPRINGS           9200    32.4    23.3   139     42.6    31.3   136 
 WILLOW CREEK PASS        9540      -M    12.1      *    20.2    16.1   125 
                                                -----                  -----
                Basin wide percent of average    122                    126 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    40.5    26.9   151     34.8    24.5   142 
 CASPER MTN.              7900    24.4    14.5   168     27.4    19.7   139 
 CHRISTINA LAKE           9980    21.6    17.6   123     27.9    20.9   133 
 DEADMAN HILL            10220    22.7    18.9   120     24.6    21.9   112 
 LAPRELE CREEK            8320     9.5     4.9   194     18.2    15.5   117 
 RENO HILL                8400    23.1    11.0   210     26.8    22.8   118 
 ROACH                    9700    27.3    17.1   160     27.8    26.8   104 
 SAND LAKE               10080    45.2    36.3   125     35.4    25.6   138 
 SOUTH PASS               9040    26.1    17.3   151     30.1    21.4   141 
 WINDY PEAK               7840     2.9     5.7    51     14.1    13.0   108 
                                                -----                  -----
                Basin wide percent of average    143                    126 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .2     2.4     8     32.9    19.0   173 
 DIVIDE PEAK              8800    24.9    15.9   157     29.9    28.1   106 
 OLD BATTLE              10000    48.7    37.6   130     46.5    36.6   127 
 SANDSTONE RS             8150     8.8     6.1   144     26.2    23.7   111 
 WHISKEY PARK             8950    44.7    27.5   163     41.0    35.0   117 
                                                -----                  -----
                Basin wide percent of average    142                    124 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    15.5    11.9   130     19.6    19.0   103 
 BLIND BULL SUM           8650    44.6    22.6   197     37.0    27.5   135 
 EAST RIM DIVIDE          7930    14.8    13.8   107     18.8    17.7   106 
 ELKHART PARK G.S.        9400    17.4    11.9   146     21.0    18.7   112 
 GROS VENTRE SUMMIT       8775    21.7    12.0   181     23.2    18.6   125 
 KENDALL R.S.             7740    15.6     5.3   294     25.0    18.1   138 
 LOOMIS PARK              8240      -M    13.2      *    29.7    21.9   136 
 NEW FORK LAKE            8340     9.3     7.7   121     15.3    16.8    91 
 SNIDER BASIN             8250    17.5    10.8   162     21.9    17.7   124 
 SPRING CREEK DIVIDE      9000    36.7    27.8   132     37.3    31.5   118 
 TRIPLE PEAK              8500    32.5    23.1   141     43.8    35.9   122 
                                                -----                  -----
                Basin wide percent of average    154                    120 


LOWER GREEN RIVER

 HAMS FORK                7840     9.0     2.9   310     18.9    15.6   121 
 HEWINTA                  9500     4.4     2.6   169     17.2    16.9   102 
 HICKERSON PARK           9150     5.2     1.8   289     12.5    13.0    96 
 HOLE-IN-ROCK             9150     3.0     1.4   214     12.8    13.0    98 
 INDIAN CREEK             9425    42.6    26.9   158     36.9    29.9   123 
 KELLEY R.S.              8180    19.9    12.5   159     35.2    21.9   161 
 STEEL CREEK PARK        10100    20.7    17.8   116     19.9    16.9   118 
                                                -----                  -----
                Basin wide percent of average    159                    121 


UPPER BEAR RIVER

 BUG LAKE                 7950    30.5    13.1   233     34.4    23.1   149 
 HAYDEN FORK              9400    12.2     3.7   330     29.9    23.7   126 
 KELLEY R.S.              8180    19.9    12.5   159     35.2    21.9   161 
 LILY LAKE                9050    12.1     7.2   168     23.7    18.7   127 
 MONTE CRISTO             8960    39.1    24.1   162     39.3    31.1   126 
 SALT RIVER SUMMIT        7600    16.6     5.4   307     26.7    19.7   136 
 TRIAL LAKE               9960    36.2    22.5   161     38.9    29.1   134 
                                                -----                  -----
                Basin wide percent of average    188                    136 

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


-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.