﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  467 
  

  

  Floods 
  in 
  Raquette 
  river. 
  The 
  estimated 
  flood 
  discharge 
  of 
  

   Raquette 
  river 
  at 
  Piereefield 
  about 
  May 
  1, 
  1900, 
  was 
  7000 
  cubic 
  

   feet 
  per 
  second 
  (catchment, 
  700 
  square 
  miles), 
  or 
  at 
  the 
  rate 
  of 
  

   about 
  10 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  mile. 
  Owing 
  to 
  a 
  large 
  

   amount 
  of 
  lake 
  storage, 
  probably 
  the 
  flood-flows 
  of 
  Raquette 
  river 
  

   do 
  not 
  often 
  exceed 
  this, 
  although 
  they 
  may 
  occasionally 
  rise 
  

   somewhat 
  higher. 
  

  

  Floods 
  in 
  Hudson 
  river. 
  The 
  maximum 
  flood 
  of 
  this 
  stream 
  

   is 
  stated 
  to 
  have 
  occurred 
  in 
  the 
  spring 
  of 
  1869, 
  and 
  at 
  Mechanic- 
  

   ville 
  amounted 
  to 
  about 
  70,000 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  

   4500 
  square 
  miles) 
  , 
  or 
  was 
  at 
  the 
  rate 
  of 
  15.5 
  cubic 
  feet 
  per 
  second 
  

   per 
  square 
  mile. 
  Gagings 
  have 
  been 
  made 
  at 
  Mechanicville 
  for 
  

   sixteen 
  years, 
  the 
  highest 
  flood 
  during 
  the 
  period 
  having 
  been 
  

   59,400 
  cubic 
  feet, 
  per 
  second 
  on 
  April 
  9, 
  1896. 
  The 
  large 
  pondage 
  

   on 
  natural 
  lakes 
  and 
  ponds 
  on 
  the 
  headwaters 
  of 
  the 
  Hudson 
  

   tends 
  to 
  reduce 
  the 
  severity 
  of 
  the 
  floods. 
  On 
  April 
  18, 
  1896, 
  

   the 
  water 
  stood 
  on 
  the 
  crest 
  of 
  the 
  Fort 
  Edward 
  dam 
  at 
  the 
  hight 
  

   of 
  8.16 
  feet, 
  giving 
  a 
  computed 
  flow 
  of 
  41,675 
  cubic 
  feet 
  per 
  second 
  

   (catchment, 
  2800 
  square 
  miles), 
  or 
  14.7 
  cubic 
  feet 
  per 
  second 
  per 
  

   square 
  mile. 
  

  

  The 
  ordinary 
  floods 
  at 
  Fort 
  Edward, 
  as 
  determined 
  from 
  the 
  

   last 
  seven 
  years' 
  record, 
  may 
  be 
  taken 
  at 
  about 
  25,000 
  cubic 
  feet 
  

   per 
  second, 
  or 
  9.2 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  mile. 
  The 
  fol- 
  

   lowing 
  tabulation 
  shows 
  the 
  flood-flows 
  at 
  Fort 
  Edward 
  since 
  the 
  

   establishment 
  of 
  the 
  station 
  in 
  the 
  fall 
  of 
  1895. 
  As 
  stated 
  on 
  a 
  

   preceding 
  page 
  these 
  flows 
  may 
  be 
  25 
  per 
  cent 
  in 
  error. 
  

  

  Date 
  

  

  April 
  18, 
  1896. 
  

  

  November 
  7, 
  1896 
  

  

  April 
  12, 
  1897 
  

  

  June 
  12, 
  1897 
  

  

  December 
  17, 
  1897 
  

  

  March 
  16, 
  1898 
  

  

  April 
  25, 
  1898 
  

  

  April 
  23, 
  1900 
  

  

  April 
  23, 
  1901 
  

  

  Hudson 
  river 
  has 
  a 
  catchment 
  area 
  of 
  about 
  12,200 
  square 
  miles 
  

   in 
  New 
  York, 
  200 
  square 
  miles 
  in 
  New 
  Jersey, 
  320 
  square 
  miles 
  in 
  

  

  r-MAXiMUM 
  Discharge-^ 
  

   Cubic 
  

   Cubic 
  feet 
  feet 
  per 
  

   per 
  second 
  second 
  per 
  

   square 
  mile 
  

  

  42,620 
  

  

  15.2 
  

  

  24,550 
  

  

  8.7 
  

  

  23,732 
  

  

  8.5 
  

  

  23,242 
  

  

  8.3 
  

  

  27,920 
  

  

  10.0 
  

  

  29,856 
  

  

  10.7 
  

  

  32,159 
  

  

  11.5 
  

  

  43,900 
  

  

  15.7 
  

  

  42,820 
  

  

  15.3 
  

  

  