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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 6 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    24.2     8.6   281     39.1    25.6   153 
 COTTONWOOD CREEK         7600    32.2    17.9   180     39.6    28.7   138 
 GRANITE CREEK            6770    23.7    10.9   217     35.7    27.3   131 
 GRASSY LAKE              7265    47.4    31.5   150     61.3    42.6   144 
 GROS VENTRE SUMMIT       8775    22.7    12.5   182     23.3    18.4   127 
 LEWIS LAKE DIVIDE        7860    55.5    32.7   170     63.6    43.3   147 
 PHILLIPS BENCH           8200    43.4    28.0   155     50.9    34.2   149 
 SALT RIVER SUMMIT        7600    18.4     6.9   267     26.8    19.6   137 
 SNAKE RIVER STATION      6920    20.0    14.7   136     40.8    29.9   136 
 SPRING CREEK DIVIDE      9000    39.8    28.3   141     37.3    31.3   119 
 THUMB DIVIDE             7980    28.6    13.7   209     37.0    24.0   154 
 TOGWOTEE PASS            9580    38.6    27.5   140     39.8    32.4   123 
 TWO OCEAN PLATEAU        9360      -M    27.1      *      -M    35.3      *
 WILLOW CREEK             8450    45.0    30.4   148     53.4    36.8   145 
                                                -----                  -----
                Basin wide percent of average    167                    139 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275      -M    25.6      *    34.7    21.8   159 
 BLACK BEAR               7950      -M    38.8      *      -M    47.2      *
 CANYON                   7940    20.8     9.3   224       -M    16.7      *
 FISHER CREEK             9100    60.4    38.2   158       -M    43.0      *
 MADISON PLATEAU          7750    41.9    22.1   190     46.0    30.4   151 
 NORTHEAST ENTRANCE       7350     7.6     4.7   162     22.7    14.3   159 
 PARKER PEAK              9400    38.3    23.3   164       -M    18.7      *
 SYLVAN LAKE              8420    32.0    22.7   141     36.9    22.9   161 
 THUMB DIVIDE             7980    28.6    13.7   209     37.0    24.0   154 
 TWO OCEAN PLATEAU        9360      -M    27.1      *      -M    35.3      *
 WHISKEY CREEK            6800    22.1    13.2   167     35.0    25.3   138 
 WHITE MILL               8700    42.4    25.8   164       -M    33.2      *
 WOLVERINE                7650    11.1     6.3   176     18.4    15.7   117 
                                                -----                  -----
                Basin wide percent of average    170                    149 


WIND RIVER

 BURROUGHS CREEK          8750    23.3    10.8   216     28.9    19.9   145 
 CHRISTINA LAKE           9980    21.9    17.7   124     27.8    20.6   135 
 COLD SPRINGS             9630     8.7     5.4   161     16.6    13.6   122 
 HOBBS PARK              10100    21.6    17.6   123     19.6    17.9   109 
 LITTLE WARM              9620    19.0     8.6   221     24.4    16.8   145 
 SOUTH PASS               9040    27.5    17.5   157     30.1    21.1   143 
 ST. LAWRENCE ALT         8620    11.0     4.3   256     16.4    12.9   127 
 TOGWOTEE PASS            9580    38.6    27.5   140     39.8    32.4   123 
 TOWNSEND CREEK           8700    12.5     8.3   151     18.5    16.0   116 
                                                -----                  -----
                Basin wide percent of average    156                    130 


BIGHORN BASIN

 BALD MTN.                9375    26.5    24.2   110     22.6    21.5   105 
 BEAR TRAP MEADOW         7900     4.6     3.2   144     12.9    11.1   116 
 BLACKWATER               9780    43.3    25.4   170     34.1    21.1   162 
 BONE SPRINGS DIV         9350    21.5    17.8   121     21.4    18.8   114 
 EVENING STAR             9200    45.7    30.6   149     46.0    26.5   174 
 GRAVE SPRINGS            8550    13.2      -M      *    14.8    13.0   114 
 KIRWIN                   9550    17.6    11.1   159     20.2    13.8   146 
 LOST CREEK               8080    21.7    15.0   145     20.4    15.6   131 
 MARQUETTE                8760    15.0     8.2   183     16.3    14.1   116 
 MIDDLE POWDER            7760    18.8    14.5   130     18.8    15.3   123 
 OWL CREEK                8975     6.0     2.5   240      9.7     8.5   114 
 POWDER RIVER PASS        9480      -M     9.0      *    17.5    15.3   114 
 SHELL CREEK              9580    21.9    17.0   129     19.2    16.5   116 
 SYLVAN LAKE              8420    32.0    22.7   141     36.9    22.9   161 
 SYLVAN ROAD              8120    14.7     6.5   226     30.2    19.1   158 
 TIMBER CREEK             7950     6.5     4.8   135     11.6    10.6   109 
 YOUNTS PEAK              8350    24.7    17.4   142       -M    19.8      *
                                                -----                  -----
                Basin wide percent of average    145                    134 


SHOSHONE RIVER

 BLACKWATER               9780    43.3    25.4   170     34.1    21.1   162 
 EVENING STAR             9200    45.7    30.6   149     46.0    26.5   174 
 KIRWIN                   9550    17.6    11.1   159     20.2    13.8   146 
 MARQUETTE                8760    15.0     8.2   183     16.3    14.1   116 
 SYLVAN LAKE              8420    32.0    22.7   141     36.9    22.9   161 
 SYLVAN ROAD              8120    14.7     6.5   226     30.2    19.1   158 
 YOUNTS PEAK              8350    24.7    17.4   142       -M    19.8      *
                                                -----                  -----
                Basin wide percent of average    158                    156 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     4.6     3.2   144     12.9    11.1   116 
 BONE SPRINGS DIV         9350    21.5    17.8   121     21.4    18.8   114 
 BURGESS JUNCTION         7880    17.0    12.6   135     17.9    14.9   120 
 CLOUD PEAK RESERVOIR     9860    22.9    17.1   134     20.8    17.8   117 
 DOME LAKE                8880    17.2    13.3   129     19.7    17.0   116 
 GRAVE SPRINGS            8550    13.2      -M      *    14.8    13.0   114 
 HANSEN SAWMILL           8760     6.2     5.9   105     12.1    10.7   113 
 LOST CREEK               8080    21.7    15.0   145     20.4    15.6   131 
 MIDDLE POWDER            7760    18.8    14.5   130     18.8    15.3   123 
 POWDER RIVER PASS        9480      -M     9.0      *    17.5    15.3   114 
 SUCKER CREEK             8880    20.3    12.6   161     21.6    17.1   126 
 TIE CREEK                6870     7.3      -M      *    17.7    14.3   124 
                                                -----                  -----
                Basin wide percent of average    134                    119 


BELLE FOURCHE

 BLIND PARK               6890     7.1     7.8    91     19.6    14.5   135 
 NORTH RAPID CREEK        6130    10.2      -M      *    18.6      -M      *
 WARREN PEAK              6520    20.2     7.8   259       -M    10.8      *
                                                -----                  -----
                Basin wide percent of average    175                    135*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    28.4    19.2   148     38.4    28.6   134 
 DIVIDE PEAK              8800    27.4    16.9   162     30.2    27.9   108 
 ELK RIVER                8700    25.0    13.5   185     31.0    22.5   138 
 JOE WRIGHT              10120    36.0    24.3   148     37.5    31.0   121 
 NORTH FRENCH CREEK      10100    40.3    28.4   142     36.3    28.7   126 
 OLD BATTLE              10000    49.5    37.7   131     46.5    36.3   128 
 SOUTH BRUSH CREEK        8400     9.7     8.9   109     21.8    21.0   104 
 TOWER                   10500    31.6    51.0    62     59.6    44.2   135 
 WEBBER SPRINGS           9200    32.9    24.0   137     42.6    31.1   137 
 WILLOW CREEK PASS        9540      -M    12.5      *    20.3    15.9   128 
                                                -----                  -----
                Basin wide percent of average    125                    127 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    42.0    27.5   153     34.8    24.3   143 
 CASPER MTN.              7900    26.1    15.4   169     27.4    19.5   141 
 CHRISTINA LAKE           9980    21.9    17.7   124     27.8    20.6   135 
 DEADMAN HILL            10220    23.0    18.9   122     24.6    21.7   113 
 LAPRELE CREEK            8320    11.4     5.3   215     18.3    15.2   120 
 RENO HILL                8400    24.6    11.7   210     26.9    22.7   119 
 ROACH                    9700    26.1    17.4   150     27.8    26.5   105 
 SAND LAKE               10080    45.2    36.6   123     35.1    25.4   138 
 SOUTH PASS               9040    27.5    17.5   157     30.1    21.1   143 
 WINDY PEAK               7840     5.0     6.3    79     14.7    12.8   115 
                                                -----                  -----
                Basin wide percent of average    145                    128 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     2.7     3.1    87     33.0    18.9   175 
 DIVIDE PEAK              8800    27.4    16.9   162     30.2    27.9   108 
 OLD BATTLE              10000    49.5    37.7   131     46.5    36.3   128 
 SANDSTONE RS             8150    11.4     7.1   161     26.2    23.5   111 
 WHISKEY PARK             8950    45.5    28.1   162     41.0    34.7   118 
                                                -----                  -----
                Basin wide percent of average    147                    125 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    17.3    12.4   140     19.7    18.8   105 
 BLIND BULL SUM           8650    44.2    22.6   196     37.0    27.3   136 
 EAST RIM DIVIDE          7930    15.6    14.1   111     18.8    17.6   107 
 ELKHART PARK G.S.        9400    18.5    12.5   148     21.0    18.5   114 
 GROS VENTRE SUMMIT       8775    22.7    12.5   182     23.3    18.4   127 
 KENDALL R.S.             7740    16.9     6.8   249     25.0    17.9   140 
 LOOMIS PARK              8240      -M    13.7      *    29.8    21.8   137 
 NEW FORK LAKE            8340    10.7     8.1   132     15.2    16.7    91 
 SNIDER BASIN             8250    18.9    11.4   166     21.9    17.5   125 
 SPRING CREEK DIVIDE      9000    39.8    28.3   141     37.3    31.3   119 
 TRIPLE PEAK              8500    34.5    23.6   146     43.9    35.6   123 
                                                -----                  -----
                Basin wide percent of average    157                    121 


LOWER GREEN RIVER

 HAMS FORK                7840    10.7     3.7   289     19.0    15.5   123 
 HEWINTA                  9500     6.4     3.4   188     17.2    16.7   103 
 HICKERSON PARK           9150     7.0     2.1   333     12.6    12.8    98 
 HOLE-IN-ROCK             9150     5.5     1.7   324     12.8    12.8   100 
 INDIAN CREEK             9425    44.3    27.5   161     37.0    29.7   125 
 KELLEY R.S.              8180    21.6    13.2   164     35.3    21.7   163 
 STEEL CREEK PARK        10100    20.9    18.1   115     20.0    16.7   120 
                                                -----                  -----
                Basin wide percent of average    167                    122 


UPPER BEAR RIVER

 BUG LAKE                 7950    32.4    13.9   233     34.5    23.0   150 
 HAYDEN FORK              9400    13.8     4.5   307     29.9    23.5   127 
 KELLEY R.S.              8180    21.6    13.2   164     35.3    21.7   163 
 LILY LAKE                9050    14.0     7.6   184     23.6    18.5   128 
 MONTE CRISTO             8960    40.3    24.7   163     39.4    30.8   128 
 SALT RIVER SUMMIT        7600    18.4     6.9   267     26.8    19.6   137 
 TRIAL LAKE               9960    36.9    22.9   161     37.1    28.8   129 
                                                -----                  -----
                Basin wide percent of average    189                    137 

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


-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.