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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 SATURDAY: APRIL 19 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    29.6    14.7   201     36.2    24.2   150 
 COTTONWOOD CREEK         7600    30.8    22.5   137     34.0    27.2   125 
 GRANITE CREEK            6770    27.3    16.6   164     33.5    25.7   130 
 GRASSY LAKE              7265    48.2    36.8   131     56.3    40.4   139 
 GROS VENTRE SUMMIT       8775    22.8    15.5   147     22.0    17.4   126 
 LEWIS LAKE DIVIDE        7860    52.9    36.2   146       -M    41.0      *
 PHILLIPS BENCH           8200      -M    30.6      *    47.2    32.4   146 
 SALT RIVER SUMMIT        7600    21.5    13.1   164     24.7    18.4   134 
 SNAKE RIVER STATION      6920    26.7    18.1   148     37.6    28.3   133 
 SPRING CREEK DIVIDE      9000    38.2    29.4   130     33.8    29.7   114 
 THUMB DIVIDE             7980    32.8    16.8   195     34.1    22.7   150 
 TOGWOTEE PASS            9580    35.2    27.3   129     35.7    30.7   116 
 TWO OCEAN PLATEAU        9360    47.1    26.9   175       -M    33.4      *
 WILLOW CREEK             8450    40.1    31.8   126     45.6    34.9   131 
                                                -----                  -----
                Basin wide percent of average    148                    133 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    37.2    25.6   145     32.0    20.0   160 
 BLACK BEAR               7950      -M    40.1      *      -M    44.4      *
 CANYON                   7940    22.8    12.9   177       -M    15.5      *
 FISHER CREEK             9100    56.9    38.1   149       -M    40.2      *
 MADISON PLATEAU          7750    43.9    25.2   174     43.2    28.6   151 
 NORTHEAST ENTRANCE       7350    11.4     8.2   139     20.0    13.1   153 
 PARKER PEAK              9400    32.7    23.3   140       -M    17.2      *
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    21.1   161 
 THUMB DIVIDE             7980    32.8    16.8   195     34.1    22.7   150 
 TWO OCEAN PLATEAU        9360    47.1    26.9   175       -M    33.4      *
 WHISKEY CREEK            6800    25.9    17.4   149     32.2    23.8   135 
 WHITE MILL               8700    39.6    25.9   153       -M    31.0      *
 WOLVERINE                7650    14.2    10.9   130     16.2    14.2   114 
                                                -----                  -----
                Basin wide percent of average    156                    147 


WIND RIVER

 BURROUGHS CREEK          8750    23.9    14.7   163     27.0    18.3   148 
 CHRISTINA LAKE           9980    20.8    17.0   122     24.2    18.8   129 
 COLD SPRINGS             9630     9.6     8.2   117     13.5    12.1   112 
 HOBBS PARK              10100    18.7    16.9   111     15.5    16.1    96 
 LITTLE WARM              9620    18.4    12.7   145     21.3    15.1   141 
 SOUTH PASS               9040    25.6    17.7   145     26.2    19.2   136 
 ST. LAWRENCE ALT         8620     9.7     6.7   145     12.7    11.6   109 
 TOGWOTEE PASS            9580    35.2    27.3   129     35.7    30.7   116 
 TOWNSEND CREEK           8700    11.0    10.2   108     14.0    14.3    98 
                                                -----                  -----
                Basin wide percent of average    132                    122 


BIGHORN BASIN

 BALD MTN.                9375    23.9    22.8   105     20.2    19.4   104 
 BEAR TRAP MEADOW         7900     7.2     6.2   116     10.8     9.6   113 
 BLACKWATER               9780    40.4    24.9   162     31.3    19.6   160 
 BONE SPRINGS DIV         9350    19.6    18.2   108     19.4    16.9   115 
 EVENING STAR             9200    42.5    29.6   144     41.7    24.6   170 
 GRAVE SPRINGS            8550    13.2      -M      *    12.7    11.3   112 
 KIRWIN                   9550    15.8    11.2   141     17.2    12.3   140 
 LOST CREEK               8080    18.6    15.3   122     17.6    13.7   128 
 MARQUETTE                8760    12.8     8.7   147     13.7    11.9   115 
 MIDDLE POWDER            7760    18.7    13.9   135     16.4    13.6   121 
 OWL CREEK                8975     8.0     4.4   182      7.5     7.3   103 
 POWDER RIVER PASS        9480      -M    11.3      *    15.2    13.4   113 
 SHELL CREEK              9580    19.4    16.4   118     16.6    14.8   112 
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    21.1   161 
 SYLVAN ROAD              8120    19.7    10.1   195     27.7    17.6   157 
 TIMBER CREEK             7950     7.9     6.5   122      9.1     8.8   103 
 YOUNTS PEAK              8350    25.0    18.3   137       -M    18.3      *
                                                -----                  -----
                Basin wide percent of average    135                    132 


SHOSHONE RIVER

 BLACKWATER               9780    40.4    24.9   162     31.3    19.6   160 
 EVENING STAR             9200    42.5    29.6   144     41.7    24.6   170 
 KIRWIN                   9550    15.8    11.2   141     17.2    12.3   140 
 MARQUETTE                8760    12.8     8.7   147     13.7    11.9   115 
 SYLVAN LAKE              8420    32.4    23.9   136     33.9    21.1   161 
 SYLVAN ROAD              8120    19.7    10.1   195     27.7    17.6   157 
 YOUNTS PEAK              8350    25.0    18.3   137       -M    18.3      *
                                                -----                  -----
                Basin wide percent of average    149                    155 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     7.2     6.2   116     10.8     9.6   113 
 BONE SPRINGS DIV         9350    19.6    18.2   108     19.4    16.9   115 
 BURGESS JUNCTION         7880    16.1    13.1   123     15.9    13.2   120 
 CLOUD PEAK RESERVOIR     9860    18.8    17.0   111     17.3    15.6   111 
 DOME LAKE                8880    15.5    14.9   104     16.6    15.1   110 
 GRAVE SPRINGS            8550    13.2      -M      *    12.7    11.3   112 
 HANSEN SAWMILL           8760     6.7     7.4    91      9.7     9.3   104 
 LOST CREEK               8080    18.6    15.3   122     17.6    13.7   128 
 MIDDLE POWDER            7760    18.7    13.9   135     16.4    13.6   121 
 POWDER RIVER PASS        9480      -M    11.3      *    15.2    13.4   113 
 SUCKER CREEK             8880    17.4    13.4   130     18.3    15.1   121 
 TIE CREEK                6870     7.6      -M      *    14.7    12.7   116 
                                                -----                  -----
                Basin wide percent of average    116                    116 


BELLE FOURCHE

 BLIND PARK               6890     9.8    11.1    88     17.1    12.3   139 
 NORTH RAPID CREEK        6130    11.9      -M      *    15.3      -M      *
 WARREN PEAK              6520    21.1    11.1   190       -M     9.4      *
                                                -----                  -----
                Basin wide percent of average    139                    139*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    29.8    23.8   125     34.0    26.7   127 
 DIVIDE PEAK              8800    28.7    21.2   135     27.4    25.5   107 
 ELK RIVER                8700    28.7    19.4   148     27.7    20.9   133 
 JOE WRIGHT              10120    29.2    24.3   120     32.2    28.2   114 
 NORTH FRENCH CREEK      10100    38.1    28.5   134     31.6    26.2   121 
 OLD BATTLE              10000    44.0    36.4   121     41.3    33.5   123 
 SOUTH BRUSH CREEK        8400    13.8    12.4   111     19.2    18.9   102 
 TOWER                   10500    57.7    49.5   117     52.7    40.4   130 
 WEBBER SPRINGS           9200    31.2    28.0   111     38.7    28.4   136 
 WILLOW CREEK PASS        9540    22.2    13.5   164     18.0    14.3   126 
                                                -----                  -----
                Basin wide percent of average    126                    123 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    39.0    29.0   134     30.4    22.0   138 
 CASPER MTN.              7900    25.0    18.7   134     23.0    16.9   136 
 CHRISTINA LAKE           9980    20.8    17.0   122     24.2    18.8   129 
 DEADMAN HILL            10220    17.7    18.1    98     20.8    19.3   108 
 LAPRELE CREEK            8320    15.8     9.1   174     16.3    13.5   121 
 RENO HILL                8400    24.9    15.0   166     23.2    21.1   110 
 ROACH                    9700    24.6    18.1   136     24.3    23.9   102 
 SAND LAKE               10080    41.4    36.1   115     32.4    23.0   141 
 SOUTH PASS               9040    25.6    17.7   145     26.2    19.2   136 
 WINDY PEAK               7840    10.4     9.0   116     13.4    11.1   121 
                                                -----                  -----
                Basin wide percent of average    131                    124 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440    13.2     9.4   140     30.1    17.2   175 
 DIVIDE PEAK              8800    28.7    21.2   135     27.4    25.5   107 
 OLD BATTLE              10000    44.0    36.4   121     41.3    33.5   123 
 SANDSTONE RS             8150    17.3    13.9   124     23.4    21.2   110 
 WHISKEY PARK             8950    41.5    30.4   137     36.0    31.7   114 
                                                -----                  -----
                Basin wide percent of average    130                    123 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    19.2    15.0   128     17.9    17.7   101 
 BLIND BULL SUM           8650    44.1    28.9   153     34.0    26.0   131 
 EAST RIM DIVIDE          7930    17.5    15.0   117     17.8    16.6   107 
 ELKHART PARK G.S.        9400    19.3    14.8   130     19.4    17.4   111 
 GROS VENTRE SUMMIT       8775    22.8    15.5   147     22.0    17.4   126 
 KENDALL R.S.             7740    22.1    12.5   177     24.1    16.9   143 
 LOOMIS PARK              8240      -M    16.4      *    28.1    20.6   136 
 NEW FORK LAKE            8340    14.2    10.3   138     13.9    15.8    88 
 SNIDER BASIN             8250    23.6    14.9   158     20.0    16.5   121 
 SPRING CREEK DIVIDE      9000    38.2    29.4   130     33.8    29.7   114 
 TRIPLE PEAK              8500    34.3    26.4   130     39.0    33.7   116 
                                                -----                  -----
                Basin wide percent of average    140                    118 


LOWER GREEN RIVER

 HAMS FORK                7840    14.0     5.7   246     15.5    14.6   106 
 HEWINTA                  9500    10.3     8.1   127     15.2    15.0   101 
 HICKERSON PARK           9150    11.5     5.7   202     11.4    11.2   102 
 HOLE-IN-ROCK             9150    10.9     5.2   210     11.7    11.2   104 
 INDIAN CREEK             9425    42.0    30.0   140     32.8    28.2   116 
 KELLEY R.S.              8180    23.7    17.0   139     27.7    20.5   135 
 STEEL CREEK PARK        10100    17.5    18.1    97     17.2    14.8   116 
                                                -----                  -----
                Basin wide percent of average    145                    114 


UPPER BEAR RIVER

 BUG LAKE                 7950    33.0    19.0   174     30.5    21.4   143 
 HAYDEN FORK              9400    16.0     9.8   163     26.2    21.4   122 
 KELLEY R.S.              8180    23.7    17.0   139     27.7    20.5   135 
 LILY LAKE                9050    16.6    11.9   139     20.5    16.7   123 
 MONTE CRISTO             8960    37.8    28.5   133     34.4    28.5   121 
 SALT RIVER SUMMIT        7600    21.5    13.1   164     24.7    18.4   134 
 TRIAL LAKE               9960    35.0    25.5   137     35.3    26.6   133 
                                                -----                  -----
                Basin wide percent of average    147                    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.