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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 FRIDAY: APRIL 23 , 1999 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    21.2    13.5   158     28.9    24.7   118 
 COTTONWOOD CREEK         7600    24.4    21.7   112     30.4    27.7   110 
 GRANITE CREEK            6770    20.4    15.5   132     24.2    26.2    93 
 GRASSY LAKE              7265    42.8    35.9   120     44.7    40.9   110 
 GROS VENTRE SUMMIT       8775      -M    15.0      *      -M    17.7      *
 LEWIS LAKE DIVIDE        7860    41.3    35.8   116     42.7    41.7   103 
 PHILLIPS BENCH           8200    35.2    30.2   117     34.0    32.9   104 
 SALT RIVER SUMMIT        7600    15.4    12.5   124     19.7    18.7   105 
 SNAKE RIVER STATION      6920    19.9    17.5   114     27.9    28.7    97 
 SPRING CREEK DIVIDE      9000    32.9    29.5   112     30.4    30.2   101 
 THUMB DIVIDE             7980    23.7    16.4   145     24.5    23.0   107 
 TOGWOTEE PASS            9580      -M    27.7      *    31.4    31.2   101 
 TWO OCEAN PLATEAU        9360    40.8    27.2   150     34.2    33.9   101 
 WILLOW CREEK             8450    32.8    31.9   103     40.9    35.4   116 
                                                -----                  -----
                Basin wide percent of average    122                    105 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    28.7    25.9   111     25.7    20.5   126 
 BLACK BEAR               7950      -M    40.0      *    48.5    45.3   108 
 CANYON                   7940    17.7    12.4   144     20.7    15.9   131 
 FISHER CREEK             9100    39.2    38.4   102     39.2    40.9    96 
 MADISON PLATEAU          7750      -M    24.9      *    34.3    29.2   118 
 NORTHEAST ENTRANCE       7350    10.5     7.5   141     15.0    13.5   112 
 PARKER PEAK              9400      -M    23.5      *      -M    17.7      *
 SYLVAN LAKE              8420      -M    23.9      *      -M    21.7      *
 THUMB DIVIDE             7980    23.7    16.4   145     24.5    23.0   107 
 TWO OCEAN PLATEAU        9360    40.8    27.2   150     34.2    33.9   101 
 WHISKEY CREEK            6800    21.9    16.7   132     26.2    24.2   108 
 WHITE MILL               8700    29.4    26.2   113     26.4    31.7    84 
 WOLVERINE                7650    12.5    10.0   125     14.0    14.6    96 
                                                -----                  -----
                Basin wide percent of average    125                    106 


WIND RIVER

 BURROUGHS CREEK          8750    17.9    14.2   127     19.7    18.7   105 
 COLD SPRINGS             9630      -M     7.8      *      -M    12.5      *
 DEER PARK                9700    21.0      -M      *      -M      -M      *
 HOBBS PARK              10100      -M    17.4      *      -M    16.5      *
 LITTLE WARM              9620      -M    12.0      *      -M    15.6      *
 SOUTH PASS               9040      -M    17.9      *      -M    19.7      *
 ST. LAWRENCE ALT         8620      -M     6.3      *      -M    12.0      *
 TOGWOTEE PASS            9580      -M    27.7      *    31.4    31.2   101 
 TOWNSEND CREEK           8700      -M    10.0      *      -M    14.9      *
                                                -----                  -----
                Basin wide percent of average    127*                   103*


BIGHORN BASIN

 BALD MTN.                9375    22.7    23.4    98     20.9    19.9   106 
 BEAR TRAP MEADOW         7900      -M     5.6      *    12.5    10.0   125 
 BLACKWATER               9780    33.8    25.2   134     27.4    20.0   137 
 BONE SPRINGS DIV         9350    20.9    18.4   114     20.2    17.4   117 
 EVENING STAR             9200    35.5    30.0   119     37.7    25.2   150 
 GRAVE SPRINGS            8550    11.4    11.1   102     14.9    11.7   127 
 KIRWIN                   9550    15.0    11.5   130     16.7    12.7   132 
 MARQUETTE                8760      -M     8.7      *      -M    12.5      *
 MIDDLE POWDER            7760    18.2    14.4   127     20.7    14.1   147 
 OWL CREEK                8975     8.0     4.1   196      9.0     7.6   118 
 POWDER RIVER PASS        9480    13.5    11.1   122     17.7    14.0   128 
 SHELL CREEK              9580      -M    16.7      *      -M    15.2      *
 SYLVAN LAKE              8420      -M    23.9      *      -M    21.7      *
 SYLVAN ROAD              8120      -M     9.5      *      -M    18.0      *
 TIMBER CREEK             7950      -M     6.3      *      -M     9.4      *
 YOUNTS PEAK              8350    22.4    18.4   122     20.7    18.7   111 
                                                -----                  -----
                Basin wide percent of average    121                    128 


SHOSHONE RIVER

 BLACKWATER               9780    33.8    25.2   134     27.4    20.0   137 
 EVENING STAR             9200    35.5    30.0   119     37.7    25.2   150 
 KIRWIN                   9550    15.0    11.5   130     16.7    12.7   132 
 MARQUETTE                8760      -M     8.7      *      -M    12.5      *
 SYLVAN LAKE              8420      -M    23.9      *      -M    21.7      *
 SYLVAN ROAD              8120      -M     9.5      *      -M    18.0      *
 YOUNTS PEAK              8350    22.4    18.4   122     20.7    18.7   111 
                                                -----                  -----
                Basin wide percent of average    126                    134 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900      -M     5.6      *    12.5    10.0   125 
 BIG GOOSE                7990    11.0      -M      *    15.4      -M      *
 BONE SPRINGS DIV         9350    20.9    18.4   114     20.2    17.4   117 
 BURGESS JUNCTION         7880    12.6    13.4    95     14.9    13.7   109 
 CLOUD PEAK RESERVOIR     9860    21.2    17.4   123     19.7    16.2   123 
 DOME LAKE                8880      -M    15.0      *    15.2    15.6    98 
 GRAVE SPRINGS            8550    11.4    11.1   102     14.9    11.7   127 
 HANSEN SAWMILL           8760      -M     7.3      *    12.5     9.7   129 
 MIDDLE POWDER            7760    18.2    14.4   127     20.7    14.1   147 
 POWDER RIVER PASS        9480    13.5    11.1   122     17.7    14.0   128 
 SUCKER CREEK             8880    14.5    13.6   107     17.9    15.6   115 
 TIE CREEK                6870      -M      -M      *      -M    13.1      *
                                                -----                  -----
                Basin wide percent of average    114                    121 


BELLE FOURCHE

 BLIND PARK               6890     3.9    10.6    37     17.7    12.9   139 
 NORTH RAPID CREEK        6130     5.0      -M      *    16.0      -M      *
 WARREN PEAK              6520    11.0    10.6   103     12.7     9.7   131 
                                                -----                  -----
                Basin wide percent of average     70                    136 


UPPER N. PLATTE RIVER

 COLUMBINE                9400    18.0    23.4    78     25.7    27.2    95 
 DIVIDE PEAK              8800    21.9    20.7   107     28.2    26.2   108 
 ELK RIVER                8700    15.9    18.4    86     25.4    21.4   119 
 JOE WRIGHT              10120    22.9    24.5    94     29.4    28.9   102 
 NORTH FRENCH CREEK      10100    35.8    28.9   124     34.3    26.9   128 
 OLD BATTLE              10000    34.5    37.0    94     40.8    34.3   119 
 SOUTH BRUSH CREEK        8400    10.2    12.0    86     21.7    19.5   111 
 TOWER                   10500    51.7    50.2   103     43.8    41.4   106 
 WEBBER SPRINGS           9200    21.5    27.4    79     30.0    29.2   103 
 WILLOW CREEK PASS        9540    14.2    13.5   106     13.9    14.7    94 
                                                -----                  -----
                Basin wide percent of average     97                    109 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240      -M    29.0      *    27.4    22.7   121 
 CASPER MTN.              7900    15.4    18.5    83     20.7    17.7   118 
 DEADMAN HILL            10220    19.7    18.5   106     20.7    20.0   104 
 DEER PARK                9700    21.0      -M      *      -M      -M      *
 LAPRELE CREEK            8320      -M     8.2      *    18.2    14.0   130 
 RENO HILL                8400    17.7    14.5   123     23.2    21.7   107 
 ROACH                    9700    18.9    18.2   104     23.9    24.7    98 
 SAND LAKE               10080    42.7    36.5   117     33.8    23.7   143 
 SOUTH PASS               9040      -M    17.9      *      -M    19.7      *
 WINDY PEAK               7840     7.8     8.7    89     15.5    11.5   135 
                                                -----                  -----
                Basin wide percent of average    106                    118 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     8.1     8.0   103     20.0    17.7   113 
 DIVIDE PEAK              8800    21.9    20.7   107     28.2    26.2   108 
 OLD BATTLE              10000    34.5    37.0    94     40.8    34.3   119 
 SANDSTONE RS             8150    11.2    12.6    89     23.0    21.9   106 
 WHISKEY PARK             8950    29.7    30.2    99     33.2    32.5   102 
                                                -----                  -----
                Basin wide percent of average     98                    110 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    16.4    14.7   111     16.7    18.0    93 
 BLIND BULL SUM           8650    30.2    26.9   112     23.7    26.4    91 
 EAST RIM DIVIDE          7930    14.5    15.0    97     15.1    16.9    90 
 ELKHART PARK G.S.        9400    14.7    14.5   102     16.2    17.7    91 
 GROS VENTRE SUMMIT       8775      -M    15.0      *      -M    17.7      *
 KENDALL R.S.             7740    14.4    12.0   121     17.7    17.2   103 
 LOOMIS PARK              8240      -M    16.0      *    21.5    20.9   103 
 NEW FORK LAKE            8340    12.5    10.0   125     13.0    16.0    82 
 SNIDER BASIN             8250    18.4    14.4   128     19.2    16.9   115 
 SPRING CREEK DIVIDE      9000    32.9    29.5   112     30.4    30.2   101 
 TRIPLE PEAK              8500    29.0    26.0   112     32.4    34.3    95 
                                                -----                  -----
                Basin wide percent of average    113                     97 


LOWER GREEN RIVER

 HAMS FORK                7840    12.0     5.8   207     13.6    15.0    92 
 HEWINTA                  9500    11.0     7.3   152     16.2    15.5   104 
 HICKERSON PARK           9150     5.3     4.8   109     11.6    11.6   100 
 HOLE-IN-ROCK             9150     7.8     4.3   182     12.0    11.6   104 
 INDIAN CREEK             9425    33.3    29.7   112     28.2    28.7    99 
 KELLEY R.S.              8180    16.7    16.4   102     20.9    20.9   100 
 STEEL CREEK PARK        10100    16.9    18.4    92     18.9    15.4   123 
                                                -----                  -----
                Basin wide percent of average    119                    103 


UPPER BEAR RIVER

 BUG LAKE                 7950    23.0    18.0   128     23.2    21.9   106 
 HAYDEN FORK              9400    12.0     8.9   137     22.4    22.0   102 
 KELLEY R.S.              8180    16.7    16.4   102     20.9    20.9   100 
 LILY LAKE                9050    12.0    11.0   110     19.9    17.2   116 
 MONTE CRISTO             8960    29.2    27.9   105     29.7    29.2   102 
 SALT RIVER SUMMIT        7600    15.4    12.5   124     19.7    18.7   105 
 TRIAL LAKE               9960    20.9    25.0    84     24.2    27.2    89 
                                                -----                  -----
                Basin wide percent of average    108                    102 

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


-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.