﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  505 
  

  

  mont 
  and 
  Massachusetts, 
  and 
  frequently 
  there 
  are 
  rainfalls 
  in 
  this 
  

   region 
  when 
  there 
  are 
  none 
  on 
  the 
  Hudson 
  river 
  above 
  Fort 
  

   Edward. 
  This 
  fact 
  renders 
  it 
  impossible 
  to 
  predicate 
  what 
  will 
  

   happen 
  on 
  this 
  part 
  of 
  the 
  stream 
  from 
  the 
  record 
  at 
  Mechanic- 
  

   ville. 
  

  

  A 
  record 
  of 
  the 
  flow 
  of 
  the 
  river 
  has 
  been 
  kept 
  at 
  Fort 
  Edward 
  

   from 
  December, 
  1895, 
  to 
  the 
  present 
  time, 
  which 
  is 
  given 
  to 
  

   November, 
  1902, 
  inclusive, 
  in 
  table 
  No. 
  63. 
  In 
  August, 
  1899, 
  the 
  

   mean 
  flow 
  for 
  the 
  month 
  at 
  Fort 
  Edward 
  was 
  714 
  cubic 
  feet 
  per 
  

   second 
  (catchment, 
  2800 
  square 
  miles), 
  or 
  at 
  the 
  rate 
  of 
  0.26 
  

   cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  For 
  fourteen 
  days 
  in 
  Sep- 
  

   tember, 
  1899, 
  the 
  mean 
  flow 
  was 
  at 
  the 
  rate 
  of 
  661 
  cubic 
  feet 
  per 
  

   second 
  or 
  0.24 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  Probably, 
  

   in 
  some 
  extreme 
  dry 
  time, 
  the 
  flow 
  at 
  Fort 
  Edward 
  will 
  not 
  

   exceed 
  0.2 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile, 
  as 
  the 
  evidence 
  

   is 
  clear 
  that 
  1899, 
  while 
  exceedingly 
  dry, 
  was 
  not 
  the 
  minimum 
  

   dry 
  year. 
  The 
  statements 
  in 
  regard 
  to 
  the 
  reliability 
  of 
  the 
  gag- 
  

   ings, 
  made 
  on 
  a 
  preceding 
  page, 
  may, 
  however, 
  be 
  taken 
  into 
  

   account 
  in 
  considering 
  the 
  minimum 
  flows 
  at 
  this 
  place. 
  

  

  Minimum 
  flow 
  of 
  Croton 
  river. 
  The 
  daily 
  record 
  of 
  this 
  stream 
  

   is 
  not 
  available, 
  the 
  flows 
  being 
  given 
  for 
  an 
  entire 
  month. 
  The 
  

   following 
  are 
  the 
  monthly 
  means 
  for 
  the 
  lowest 
  flows: 
  

  

  In 
  August, 
  1869, 
  the 
  flow 
  for 
  the 
  entire 
  month 
  was 
  90 
  cubic 
  feet 
  

   per 
  second; 
  in 
  September 
  of 
  that 
  year, 
  it 
  was 
  54 
  cubic 
  feet 
  per 
  

   second. 
  The 
  mean 
  flow, 
  therefore, 
  for 
  two 
  months 
  was 
  72 
  cubic 
  

   feet 
  per 
  second 
  (catchment, 
  339 
  square 
  miles), 
  or 
  at 
  the 
  rate 
  of 
  

   €.21 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  

  

  In 
  September, 
  1870, 
  the 
  mean 
  flow 
  was 
  97 
  cubic 
  feet 
  per 
  second 
  

   and 
  in 
  October, 
  111 
  cubic 
  feet 
  per 
  second. 
  

  

  The 
  following 
  are 
  the 
  flows 
  for 
  the 
  growing 
  period 
  of 
  1877 
  : 
  

  

  Cubic 
  feet 
  

   per 
  second 
  

  

  June 
  159 
  

  

  July 
  130 
  

  

  August 
  127 
  

  

  Mean 
  138 
  

  

  The 
  flow 
  for 
  September, 
  1877, 
  was 
  93 
  cubic 
  feet 
  per 
  second. 
  

  

  