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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: APRIL 17 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    30.5    15.3   199     36.1    24.1   150 
 COTTONWOOD CREEK         7600    32.4    22.9   141     34.0    27.0   126 
 GRANITE CREEK            6770    28.0    17.2   163     33.5    25.5   131 
 GRASSY LAKE              7265    49.1    37.3   132     56.3    40.1   140 
 GROS VENTRE SUMMIT       8775    22.7    15.7   145     21.9    17.3   127 
 LEWIS LAKE DIVIDE        7860    53.2    36.5   146       -M    40.8      *
 PHILLIPS BENCH           8200    45.4    30.7   148     47.2    32.2   147 
 SALT RIVER SUMMIT        7600    21.9    13.4   163     24.6    18.3   134 
 SNAKE RIVER STATION      6920    27.7    18.3   151     37.6    28.1   134 
 SPRING CREEK DIVIDE      9000    38.3    29.4   130     33.7    29.5   114 
 THUMB DIVIDE             7980    33.6    17.1   196     34.0    22.5   151 
 TOGWOTEE PASS            9580    35.7    27.2   131     35.3    30.5   116 
 TWO OCEAN PLATEAU        9360    47.2    26.7   177       -M    33.2      *
 WILLOW CREEK             8450    41.0    31.7   129     45.6    34.7   131 
                                                -----                  -----
                Basin wide percent of average    149                    133 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    37.1    25.6   145     31.9    19.8   161 
 BLACK BEAR               7950      -M    40.2      *      -M    44.1      *
 CANYON                   7940    23.2    13.2   176       -M    15.4      *
 FISHER CREEK             9100    56.8    38.0   149       -M    39.8      *
 MADISON PLATEAU          7750    43.5    25.4   171     43.1    28.4   152 
 NORTHEAST ENTRANCE       7350    12.4     8.6   144     19.8    13.0   152 
 PARKER PEAK              9400    32.6    23.3   140       -M    17.0      *
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    20.9   162 
 THUMB DIVIDE             7980    33.6    17.1   196     34.0    22.5   151 
 TWO OCEAN PLATEAU        9360    47.2    26.7   177       -M    33.2      *
 WHISKEY CREEK            6800    25.2    17.8   142     32.1    23.6   136 
 WHITE MILL               8700    39.5    25.9   153       -M    30.8      *
 WOLVERINE                7650    13.5    11.3   119     16.1    14.1   114 
                                                -----                  -----
                Basin wide percent of average    155                    148 


WIND RIVER

 BURROUGHS CREEK          8750    24.1    15.0   161     26.9    18.1   149 
 CHRISTINA LAKE           9980    20.8    16.9   123     24.2    18.6   130 
 COLD SPRINGS             9630    10.1     8.5   119     13.5    11.9   113 
 HOBBS PARK              10100    19.1    16.7   114     15.5    15.9    97 
 LITTLE WARM              9620    18.7    13.1   143     21.3    14.9   143 
 SOUTH PASS               9040    25.8    17.7   146     26.2    19.0   138 
 ST. LAWRENCE ALT         8620     9.5     6.9   138     12.8    11.4   112 
 TOGWOTEE PASS            9580    35.7    27.2   131     35.3    30.5   116 
 TOWNSEND CREEK           8700    11.0    10.3   107     14.0    14.1    99 
                                                -----                  -----
                Basin wide percent of average    132                    123 


BIGHORN BASIN

 BALD MTN.                9375    24.1    22.5   107     20.2    19.2   105 
 BEAR TRAP MEADOW         7900     7.9     6.6   120     10.8     9.5   114 
 BLACKWATER               9780    40.4    24.8   163     31.2    19.4   161 
 BONE SPRINGS DIV         9350    20.6    18.1   114     18.7    16.7   112 
 EVENING STAR             9200    42.7    29.4   145     41.6    24.4   170 
 GRAVE SPRINGS            8550    13.7      -M      *    12.6    11.1   114 
 KIRWIN                   9550    15.5    11.2   138     17.2    12.1   142 
 LOST CREEK               8080    18.7    15.3   122     17.6    13.5   130 
 MARQUETTE                8760    13.0     8.7   149     13.6    11.6   117 
 MIDDLE POWDER            7760    19.0    13.8   138     16.3    13.4   122 
 OWL CREEK                8975     8.4     4.5   187      7.5     7.2   104 
 POWDER RIVER PASS        9480      -M    11.5      *    15.0    13.2   114 
 SHELL CREEK              9580    19.7    16.3   121     16.5    14.6   113 
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    20.9   162 
 SYLVAN ROAD              8120    20.4    10.4   196     27.7    17.5   158 
 TIMBER CREEK             7950     8.0     6.5   123      9.1     8.6   106 
 YOUNTS PEAK              8350    25.2    18.3   138       -M    18.1      *
                                                -----                  -----
                Basin wide percent of average    137                    133 


SHOSHONE RIVER

 BLACKWATER               9780    40.4    24.8   163     31.2    19.4   161 
 EVENING STAR             9200    42.7    29.4   145     41.6    24.4   170 
 KIRWIN                   9550    15.5    11.2   138     17.2    12.1   142 
 MARQUETTE                8760    13.0     8.7   149     13.6    11.6   117 
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    20.9   162 
 SYLVAN ROAD              8120    20.4    10.4   196     27.7    17.5   158 
 YOUNTS PEAK              8350    25.2    18.3   138       -M    18.1      *
                                                -----                  -----
                Basin wide percent of average    150                    156 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     7.9     6.6   120     10.8     9.5   114 
 BONE SPRINGS DIV         9350    20.6    18.1   114     18.7    16.7   112 
 BURGESS JUNCTION         7880    16.0    13.0   123     15.9    13.0   122 
 CLOUD PEAK RESERVOIR     9860    19.8    16.9   117     17.1    15.3   112 
 DOME LAKE                8880    15.7    14.8   106     16.6    14.9   111 
 GRAVE SPRINGS            8550    13.7      -M      *    12.6    11.1   114 
 HANSEN SAWMILL           8760     6.8     7.5    91      9.7     9.2   105 
 LOST CREEK               8080    18.7    15.3   122     17.6    13.5   130 
 MIDDLE POWDER            7760    19.0    13.8   138     16.3    13.4   122 
 POWDER RIVER PASS        9480      -M    11.5      *    15.0    13.2   114 
 SUCKER CREEK             8880    17.4    13.4   130     18.2    14.9   122 
 TIE CREEK                6870     7.9      -M      *    14.7    12.5   118 
                                                -----                  -----
                Basin wide percent of average    119                    117 


BELLE FOURCHE

 BLIND PARK               6890    10.8    11.3    96     17.1    12.0   143 
 NORTH RAPID CREEK        6130    12.6      -M      *    15.3      -M      *
 WARREN PEAK              6520    21.5    11.3   190       -M     9.2      *
                                                -----                  -----
                Basin wide percent of average    143                    143*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    30.6    24.1   127     34.0    26.4   129 
 DIVIDE PEAK              8800    29.1    21.5   135     27.4    25.2   109 
 ELK RIVER                8700    29.8    19.9   150     27.7    20.7   134 
 JOE WRIGHT              10120    29.1    24.3   120     32.2    27.8   116 
 NORTH FRENCH CREEK      10100    38.3    28.4   135     31.4    25.9   121 
 OLD BATTLE              10000    44.2    36.1   122     41.1    33.1   124 
 SOUTH BRUSH CREEK        8400    14.0    12.7   110     19.2    18.6   103 
 TOWER                   10500    58.1    49.3   118     48.5    39.9   122 
 WEBBER SPRINGS           9200    32.8    28.3   116     38.7    28.1   138 
 WILLOW CREEK PASS        9540    22.4    13.5   166     17.9    14.1   127 
                                                -----                  -----
                Basin wide percent of average    127                    122 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    38.4    29.0   132     29.7    21.7   137 
 CASPER MTN.              7900    25.2    18.9   133     23.0    16.6   139 
 CHRISTINA LAKE           9980    20.8    16.9   123     24.2    18.6   130 
 DEADMAN HILL            10220    18.8    18.0   104     20.7    19.0   109 
 LAPRELE CREEK            8320    15.7     9.5   165     16.2    13.3   122 
 RENO HILL                8400    25.9    15.2   170     23.2    20.9   111 
 ROACH                    9700    24.5    18.1   135     24.3    23.6   103 
 SAND LAKE               10080    41.8    35.9   116     32.3    22.7   142 
 SOUTH PASS               9040    25.8    17.7   146     26.2    19.0   138 
 WINDY PEAK               7840    11.5     9.1   126     13.6    10.9   125 
                                                -----                  -----
                Basin wide percent of average    132                    125 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440    16.3    10.1   161     29.9    17.0   176 
 DIVIDE PEAK              8800    29.1    21.5   135     27.4    25.2   109 
 OLD BATTLE              10000    44.2    36.1   122     41.1    33.1   124 
 SANDSTONE RS             8150    19.5    14.6   134     23.4    20.9   112 
 WHISKEY PARK             8950    42.1    30.6   138     34.2    31.3   109 
                                                -----                  -----
                Basin wide percent of average    134                    122 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    18.2    15.2   120     17.9    17.6   102 
 BLIND BULL SUM           8650    46.5    30.0   155     34.0    25.8   132 
 EAST RIM DIVIDE          7930    17.5    15.0   117     17.8    16.5   108 
 ELKHART PARK G.S.        9400    19.4    14.9   130     19.4    17.3   112 
 GROS VENTRE SUMMIT       8775    22.7    15.7   145     21.9    17.3   127 
 KENDALL R.S.             7740    23.3    12.8   182     24.1    16.8   143 
 LOOMIS PARK              8240      -M    16.7      *    28.0    20.4   137 
 NEW FORK LAKE            8340    15.4    10.5   147     13.8    15.7    88 
 SNIDER BASIN             8250    24.6    15.2   162     20.0    16.4   122 
 SPRING CREEK DIVIDE      9000    38.3    29.4   130     33.7    29.5   114 
 TRIPLE PEAK              8500    36.7    26.7   137     38.9    33.5   116 
                                                -----                  -----
                Basin wide percent of average    142                    119 


LOWER GREEN RIVER

 HAMS FORK                7840    15.2     5.7   267     15.4    14.5   106 
 HEWINTA                  9500    13.4     8.5   158     15.2    14.8   103 
 HICKERSON PARK           9150    10.7     6.1   175     11.4    11.0   104 
 HOLE-IN-ROCK             9150    11.5     5.7   202     11.7    11.0   106 
 INDIAN CREEK             9425    43.2    30.2   143     32.8    28.0   117 
 KELLEY R.S.              8180    25.1    17.3   145     26.8    20.3   132 
 STEEL CREEK PARK        10100    17.5    18.0    97     17.2    14.6   118 
                                                -----                  -----
                Basin wide percent of average    149                    114 


UPPER BEAR RIVER

 BUG LAKE                 7950    34.9    19.5   179     30.5    21.2   144 
 HAYDEN FORK              9400    18.0    10.3   175     26.2    21.2   124 
 KELLEY R.S.              8180    25.1    17.3   145     26.8    20.3   132 
 LILY LAKE                9050    18.2    12.4   147     20.5    16.5   124 
 MONTE CRISTO             8960    41.0    28.9   142     34.4    28.2   122 
 SALT RIVER SUMMIT        7600    21.9    13.4   163     24.6    18.3   134 
 TRIAL LAKE               9960    36.8    25.8   143     35.3    26.3   134 
                                                -----                  -----
                Basin wide percent of average    154                    130 

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


-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.