B A S I N   S U M M A R Y   OF
                        S N O W    C O U R S E    D A T A

                                    MARCH  1999


      SNOW COURSE         ELEVATION    DATE    SNOW   WATER     LAST   AVERAGE
                                              DEPTH  CONTENT    YEAR   1961-90
-------------------------------------------------------------------------------
   SNAKE RIVER BASIN                                          
      ASTER CREEK            7750    2/24/99   111     33.0     24.1     25.3
      BASE CAMP PILLOW       7030    3/01/99   ---     23.3     14.7     15.7
      BASE CAMP              7030    2/25/99    84     24.3     15.2     17.8
      BLACK BEAR PILLOW      7950    3/01/99   ---     46.5     31.4     31.7
      BLIND BULL PILLOW      8900    3/01/99   ---     26.2     19.4     24.3
      BRYAN FLAT             6420    2/25/99    38     10.4      9.0      8.3
      CCC CAMP               7000    2/24/99    51     13.7     12.4     10.9
      COTTONWOOD CR PILLOW   7700    3/01/99   ---     21.7     17.8     18.5
      DARBY CANYON           8250    2/27/99    70     21.2     19.7     19.8
      EAST RIM DIV PILLOW    7930    3/01/99   ---     12.5      8.6     12.0
      ELBO RANCH             7100    2/28/99    47     12.4     12.6     10.2
      FOUR MILE MEADOWS      7860    2/25/99    46     12.5      9.8     11.1
      GLADE CREEK            7040    2/24/99    90     25.5     18.3     20.3
      GRASSY LAKE PILLOW     7270    3/01/99   ---     38.4     25.7     29.6
      GREYS BOUNDARY         5720    2/24/99    46     12.0     13.2     10.3
      GROS VENTRE PILLOW     8750    3/01/99   ---     14.0     11.5     12.9
      GROVER PARK DIVIDE     7000    2/24/99    40     10.9     10.2     10.5
      HUCKLEBERRY DIVIDE     7300    2/24/99    83     11.8     16.7     18.7
      JACKPINE CREEK         7350    2/27/99    81     24.2     18.0     19.2
      LEWIS LAKE PILLOW      7850    3/01/99   ---     37.7     24.0     29.5
      LEWIS LAKE DIVIDE      7850                                ---     35.3
      MORAN                  6750    2/26/99    56     14.7     12.7     11.8
      PHILLIPS BENCH PILL.   8200    3/01/99   ---     29.6     22.9     24.2
      POISON MEADOWS         8500                                ---     24.5
      SALT RIVER PILLOW      7600    3/01/99   ---     14.3     12.8     12.1
      SNAKE RIVER STATION    6920    2/24/99    78     21.9     15.8     18.2
      SNOW KING MTN          7660    2/25/99    51     14.3     13.0     12.8
      SPRING CRK. PILLOW     9000    3/01/99   ---     25.6     17.5     23.3
      TETON PASS W.S.        7740    2/25/99    92     29.7     22.5     22.4
      THUMB DIVIDE           7980    2/24/99    70     19.5     13.3     17.1
      TOGWOTEE PASS PILLOW   9580    3/01/99   ---     26.1     19.3     20.8
      TURPIN MEADOWS         6900    2/25/99    46     12.5      9.1      9.5
      TWO OCEAN PILLOW       9240    3/01/99   ---     33.1     22.4     22.2
      WILLOW CREEK PILLOW    8450    3/01/99   ---     29.9     22.7     25.8
 
   UPPER YELLOWSTONE & MADISON RIVER BASINS                   
      BLACK BEAR PILLOW      7950    3/01/99   ---     46.5     31.4     31.7
      CANYON PILLOW          8090    3/01/99   ---     16.6     10.7     10.7
      FISHER CREEK PILLOW    9100    3/01/99   ---     37.0     25.6     30.3
      FISHER CREEK           9100                                ---     32.2
      LAKE CAMP              7780    2/24/99    45     11.5      7.2      8.2
      LUPINE CREEK           7380    2/26/99    43     11.1      7.8      8.9
      MADISON PLT PILLOW     7750    3/01/99   ---     32.4     17.0     20.6
      MADISON PLATEAU        7750                                ---     19.4
      NORRIS BASIN           7500    2/27/99    40     11.4      8.9      9.9
      N.E. ENTRANCE PILLOW   7350    3/01/99   ---     11.3      6.2      8.1
      NORTHEAST ENTRANCE     7350                                6.4      8.1
      OLD FAITHFUL           7400    3/01/99    64     20.0     10.7     13.7
      PARKERS PEAK PILLOW    9400    3/01/99   ---     21.0     14.9     18.0
      SYLVAN LAKE PILLOW     8420    3/01/99   ---     23.4     13.6     18.5
      THUMB DIVIDE           7980    2/24/99    70     19.5     13.3     17.1
      TWENTY-ONE MILE        7150    2/28/99    69     21.2     11.7     14.9
      TWO OCEAN PILLOW       9240    3/01/99   ---     33.1     22.4     22.2
      WEST YELL'ST PILLOW    6700    3/01/99   ---     14.1      6.0     10.1
      WEST YELLOWSTONE       6700    2/28/99    48     13.7      8.7     10.3
 
   WIND RIVER BASIN                                           
      BLUE RIDGE             9620    2/23/99    34      7.7     13.1     10.3
      BURROUGHS CRK PILLOW   8750    3/01/99   ---     15.7     12.0     13.1
      BURROUGHS CREEK        8750                                ---     12.4
      CASTLE CREEK           8400    2/23/99    28      6.2      3.8      4.0
      COLD SPRINGS PILLOW    9630    3/01/99   ---      8.7      8.0      7.0
      DU NOIR                8760    2/23/99    32      7.2      6.5      7.0
      GEYSER CREEK           8500    2/23/99    27      6.6      6.7      6.2
      GRANNIER MEADOWS       8860    2/24/99    43     10.0      8.6     12.3
      HOBBS PARK PILLOW     10100    3/01/99   ---     15.5     10.8     12.1
      LITTLE WARM PILLOW     9370    3/01/99   ---     12.5      8.2      9.2
      MIDDLE FORK            7420    2/24/99    15      3.6      6.1      4.8
      SOUTH PASS PILLOW      9040    3/01/99   ---     16.0     11.3     14.0
      ST LAWRENCE ALT PILL   8620    3/01/99   ---      6.3      7.5      6.2
      T CROSS RANCH          7900    2/23/99    32      7.9      8.9      6.7
      TOGWOTEE PASS PILLOW   9580    3/01/99   ---     26.1     19.3     20.8
      TOWNSEND CRK PILLOW    8700    3/01/99   ---      8.7      8.3      8.0
      YOUNTS PEAK PILLOW     8350    3/01/99   ---     19.5     12.5     14.8
 
   BIG HORN RIVER BASIN                                       
      BALD MOUNTAIN PILLOW   9380    3/01/99   ---     17.6     16.3     17.0
      BONE SPGS. PILLOW      9350    3/01/99   ---     13.9     13.4     13.4
      KIRWIN PILLOW          9550    3/01/99   ---     11.2     10.2      8.1
      MEDICINE LODGE LAKES   9340    2/26/99    47     11.4      7.4      9.6
      MIDDLE POWDER PILLOW   7760    3/01/99   ---      7.5      7.9      9.7
      MIDDLE POWDER          7760                                ---      8.9
      ONION GULCH            8780    2/28/99    31      5.2      6.4      7.3
      OWL CREEK PILLOW       8980    3/01/99   ---      5.6      5.0      3.7
      POWDER RVR.PASS PILL   9480    3/01/99   ---     11.1      8.7      8.8
      RANGER CREEK           8120    2/26/99    39      9.2      5.6      7.7
      SHELL CREEK PILLOW     9580    3/01/99   ---     14.7     11.7     12.6
      TIMBER CREEK PILLOW    7950    3/01/99   ---      4.6      6.7      4.9
      TYRELL RANGER STA.     8300    2/28/99    32      6.4      5.2      7.0
 
   SHOSHONE & CLARKS FORK RIVER BASINS                        
      BEARTOOTH LK. PILLOW   9280    3/01/99   ---     24.1     16.2     19.9
      BLACKWATER PILLOW      9780    3/01/99   ---     27.7     17.1     18.0
      CARTER MOUNTAIN        7950    2/26/99     9      1.4      4.5      3.7
      FISHER CREEK PILLOW    9100    3/01/99   ---     37.0     25.6     30.3
      FISHER CREEK           9100                                ---     32.2
      EVENING STAR PILLOW    9200    3/01/99   ---     30.9     18.8     22.5
      MARQUETTE PILLOW       8760    3/01/99   ---      7.1     10.0      6.5
      PARKERS PEAK PILLOW    9400    3/01/99   ---     21.0     14.9     18.0
      N.E. ENTRANCE PILLOW   7350    3/01/99   ---     11.3      6.2      8.1
      NORTHEAST ENTRANCE     7350                                6.4      8.1
      PARKERS PEAK PILLOW    9400    3/01/99   ---     21.0     14.9     18.0
      SYLVAN ROAD PILLOW     7120    3/01/99   ---     15.8      8.4     11.2
      WHITE MILL PILLOW      8700    3/01/99   ---     25.4     19.1     21.2
      WHITE MILL             8700                                ---     23.4
      WOLVERINE PILLOW       7650    3/01/99   ---     13.0      8.3     10.1
      YOUNTS PEAK PILLOW     8350    3/01/99   ---     19.5     12.5     14.8
 
   POWDER & TONGUE RIVER BASINS                               
      BEAR TRAP PILLOW       8200    3/01/99   ---      5.9      4.8      5.9
      BIG GOOSE              7760    2/26/99    13      2.8      5.9      5.6
      BONE SPGS. PILLOW      9350    3/01/99   ---     13.9     13.4     13.4
      BURGESS JCT. PILLOW    7880    3/01/99   ---      7.1      8.8      9.7
      CLOUD PEAK PILLOW      9850    3/01/99   ---     12.5     11.6     11.1
      DOME LAKE PILLOW       8880    3/01/99   ---      6.9     10.2     11.3
      HANSEN S.M. PILLOW     8360    3/01/99   ---      4.7      6.5      5.7
      MIDDLE POWDER PILLOW   7760    3/01/99   ---      7.5      7.9      9.7
      MIDDLE POWDER          7760                                ---      8.9
      NORTH TONGUE           8450    2/26/99    36      8.8     11.1     10.7
      ONION GULCH            8780    2/28/99    31      5.2      6.4      7.3
      POWDER RVR.PASS PILL   9480    3/01/99   ---     11.1      8.7      8.8
      SAWMILL DIVIDE         9260    2/26/99    39      9.2     11.9     10.9
      SOLDIER PARK           8780    2/28/99    15      1.4      4.5      4.6
      SOUR DOUGH             8460    2/28/99    23      3.6      5.4      5.5
      SUCKER CREEK PILLOW    8880    3/01/99   ---      8.6     10.3      9.7
      SUCKER CREEK           8880                                ---     10.1
      WOOD ROCK G.S.         8440    2/26/99    29      6.5      8.6      8.3
 
   BELLE FOURCHE & CHEYENNE RIVER BASINS                      
      BEARLODGE DIVIDE       4680    2/25/99     0       .0       .7      2.2
      BLIND PARK PILLOW      6870    3/01/99   ---      7.0      8.7      9.1
      DITCH CREEK            6870                                3.7      ---
      NORTH RAPID CK PILL.   6130    3/01/99   ---      5.0      9.1      ---
      MALLO                  6420                                8.9      7.4
      MOUNT TOM              5560                                3.5      4.9
      REUTER CANYON          6280    2/26/99    25      7.1      5.7      8.3
      UPPER SPEARFISH        6500    2/24/99    20      4.6      7.6      6.0
      WARREN PEAK PILLOW     6520    3/01/99   ---      9.2     11.3      9.1
      LITTLE BEAR RUN        6240                                5.0      ---
 
   UPPER NORTH PLATTE BASIN                                   
      DIVIDE PEAK PILLOW     8860    3/01/99   ---     16.4     14.6     16.8
      JOE WRIGHT SNOTEL     10000    3/01/99   ---     17.4     16.4     17.4
      MOSS LAKE              9800    2/23/99    60     16.2     18.5     20.7
      NORTH BARRETT CREEK    9400    2/23/99    76     21.5     16.0     17.4
      NORTH FRENCH PILLOW   10130    3/01/99   ---     25.4     23.4     20.4
      OLD BATTLE PILLOW      9920    3/01/99   ---     24.2     24.4     26.2
      PURGATORY GULCH        8970    2/23/99    42     12.3      8.8      8.9
      ROACH SNOTEL           9400    3/01/99   ---     14.5     11.7     14.0
      RYAN PARK              8400    2/23/99    43     11.6      7.9      9.7
      SAND LAKE PILLOW      10050    3/01/99   ---     29.0     19.9     26.8
      SOUTH BRUSH PILLOW     8440    3/01/99   ---     11.5      9.1      9.4
      WEBBER SPRING PILLOW   9250    3/01/99   ---     16.5     16.3     22.3
      WILLOW CK PS SNOTEL    9500    3/01/99   ---     10.0      5.5      9.2
 
   LOWER NORTH PLATTE, SWEETWATER & LARAMIE RIVER BASINS      
      ALBANY                 9400    2/24/99    43     11.3     11.1     12.9
      BOXELDER               7280    2/27/99    20      4.3      6.4      5.9
      BROOKLYN LK. PILLOW   10220    3/01/99   ---     18.3     14.9     19.9
      BUCK CREEK             7960    2/27/99    28      6.6      8.6      7.8
      CASPER MTN. PILLOW     7850    3/01/99   ---      9.6      6.9     12.3
      DEADMAN HILL SNOTEL   10200    3/01/99   ---     14.8     11.2     13.5
      DEADMAN HILL          10200                                ---      ---
      FOXPARK                9060    2/24/99    23      5.6      8.2      6.5
      GRANNIER MEADOWS       8860    2/24/99    43     10.0      8.6     12.3
      HAIRPIN TURN           9480    2/24/99    49     13.4     11.8     14.5
      JOE WRIGHT SNOTEL     10000    3/01/99   ---     17.4     16.4     17.4
      LA BONTE               8450    2/28/99    18      3.8      3.6      5.3
      LA PRELE PILLOW        8380    3/01/99   ---      6.9      8.0      8.4
      LARSEN CREEK           9020    2/22/99    48     12.5      6.5     11.2
      LIBBY LODGE            8750    2/24/99    36      9.0      8.6      9.9
      POLE MOUNTAIN          8700    2/24/99    28      7.0      7.2      6.3
      RENO HILL PILLOW       8500    3/01/99   ---     11.4     10.5     10.8
      ROACH SNOTEL           9400    3/01/99   ---     14.5     11.7     14.0
      SOUTH PASS PILLOW      9040    3/01/99   ---     16.0     11.3     14.0
      WINDY PEAK PILLOW      7900    3/01/99   ---      5.5      5.9      6.2
 
   LITTLE SNAKE RIVER BASIN                                   
      BATTLE MTN. PILLOW     7440    3/01/99   ---     12.1     10.8      9.9
      BUTTER HILL            7880    2/25/99    43     12.0     10.0     12.7
      DIVIDE PEAK PILLOW     8860    3/01/99   ---     16.4     14.6     16.8
      ELK RIVER SNOTEL       8600    3/01/99   ---     16.2     13.7     16.7
      HASKINS CREEK          8980    2/25/99    85     26.2     27.2     25.6
      OLD BATTLE PILLOW      9920    3/01/99   ---     24.2     24.4     26.2
      SANDSTONE PILLOW       8150    3/01/99   ---     11.5     12.6     12.2
      WHISKEY PARK PILLOW    8950    3/01/99   ---     23.2     22.7     23.6
 
   UPPER GREEN RIVER BASIN                                    
      BIG PARK               8620    2/25/99    60     17.7     15.0     16.9
      BIG SANDY PILLOW       9080    3/01/99   ---     14.2      9.0     12.1
      BLIND BULL PILLOW      8900    3/01/99   ---     26.2     19.4     24.3
      EAST RIM DIV PILLOW    7930    3/01/99   ---     12.5      8.6     12.0
      ELKHART PARK PILLOW    9400    3/01/99   ---     12.4      9.6     11.4
      GROS VENTRE PILLOW     8750    3/01/99   ---     14.0     11.5     12.9
      INDIAN CREEK PILLOW    9430    3/01/99   ---     25.7     19.5     22.9
      KELLEY R.S. PILLOW     8180    3/01/99   ---     14.9     12.8     14.2
      KENDALL R.S. PILLOW    7740    3/01/99   ---     14.5     11.5     12.5
      LOOMIS PARK PILLOW     8240    3/01/99   ---     16.9     11.9     14.9
      NEW FORK PILLOW        8340    3/01/99   ---     11.4      8.1      9.9
      POCKET CREEK           9350    2/24/99    46     12.0      7.2     10.7
      POISON MEADOWS         8500                                ---     24.5
      ROWDY CREEK            8300    2/24/99    81     23.8     16.2     19.2
      SNIDER BASIN PILLOW    8060    3/01/99   ---     15.1      9.4     12.8
      TRIPLE PEAK  PILLOW    8500    3/01/99   ---     24.7     17.6     21.7
 
   LOWER GREEN RIVER BASIN                                    
      BIG PARK               8620    2/25/99    60     17.7     15.0     16.9
      BLACK'S FORK JUNCTN    8930    2/25/99    33      8.6      9.3      7.5
      HAMS FORK PILLOW       7840    3/01/99   ---     12.8      9.3     10.5
      HENRY'S FORK          10000    2/25/99    43     10.9     13.3     11.2
      HEWINTA SNOTEL         9500    3/01/99   ---      9.9      9.3      8.5
      HICKERSON PARK SNOTE   9100    3/01/99   ---      5.9      8.8      5.0
      HOLE-IN-ROCK SNOTEL    9150    3/01/99   ---      6.0      6.6      4.5
      INDIAN CREEK PILLOW    9430    3/01/99   ---     25.7     19.5     22.9
      KELLEY R.S. PILLOW     8180    3/01/99   ---     14.9     12.8     14.2
      SPRING CRK. PILLOW     9000    3/01/99   ---     25.6     17.5     23.3
      STEEL CREEK PARK SNO  10100    3/01/99   ---     12.4     12.2     12.6
 
   UPPER BEAR RIVER BASIN                                     
      BIG PARK               8620    2/25/99    60     17.7     15.0     16.9
      BURT'S-MILLER RANCH    7900    2/25/99    22      6.3      4.6      4.6
      HAYDEN FORK SNOTEL     9100    3/01/99   ---     13.5     11.4     13.7
      INDIAN CREEK PILLOW    9430    3/01/99   ---     25.7     19.5     22.9
      KELLEY R.S. PILLOW     8180    3/01/99   ---     14.9     12.8     14.2
      SALT RIVER PILLOW      7600    3/01/99   ---     14.3     12.8     12.1
      STILLWATER CAMP        8550    2/25/99    37      9.7      9.0      8.6
      TRIAL LAKE SNOTEL      9960    3/01/99   ---     17.9     17.9     21.2
      TRIAL LAKE             9960    2/25/99    68     19.6     20.2     20.3
      TRIAL LAKE             9960                                ---     15.4
 (d) Denotes discontinued site.

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