﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  503 
  

  

  miles 
  above 
  Ogdensburg 
  September 
  25, 
  1900, 
  the 
  discharge 
  was 
  

   estimated 
  at 
  614 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  1535 
  square 
  

   miles), 
  or 
  at 
  the 
  rate 
  of 
  0.4 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  

   There 
  is 
  not 
  enough 
  information 
  about 
  this 
  river 
  to 
  determine 
  

   whether 
  or 
  not 
  this 
  is 
  the 
  extreme 
  minimum 
  flow, 
  but 
  taking 
  into 
  

   account 
  the 
  rainfall 
  of 
  1900, 
  it 
  is 
  probable 
  that 
  the 
  minimum 
  flow 
  

   is 
  somewhat 
  lower 
  than 
  this. 
  

  

  Minimum 
  floiv 
  of 
  Raquette 
  river. 
  Only 
  two 
  measurements 
  of 
  

   the 
  flow 
  of 
  this 
  stream 
  have 
  been 
  made. 
  The 
  first 
  of 
  these 
  was 
  a 
  

   current 
  meter 
  measurement 
  made 
  at 
  Potsdam, 
  where 
  the 
  catch- 
  

   ment 
  area 
  has 
  not 
  been 
  determined, 
  by 
  W. 
  C. 
  Johnson, 
  on 
  

   August 
  28, 
  1898, 
  on 
  which 
  day 
  the 
  flow 
  of 
  the 
  stream 
  was 
  755 
  

   cubic 
  feet 
  per 
  second. 
  

  

  A 
  current 
  meter 
  measurement 
  was 
  also 
  made 
  near 
  Massena, 
  

   October 
  2-3, 
  1900, 
  showing 
  the 
  low-water 
  flow 
  of 
  Raquette 
  river 
  to- 
  

   be 
  934 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  about 
  1200 
  square 
  miles), 
  

   or 
  at 
  the 
  rate 
  of 
  0.78 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  

  

  There 
  is 
  very 
  large 
  pondage 
  area 
  on 
  the 
  various 
  lakes 
  at 
  the 
  

   headwaters 
  of 
  this 
  stream, 
  but 
  probably 
  the 
  low-water 
  flow 
  will 
  

   go 
  lower 
  than 
  the 
  preceding 
  figures 
  — 
  how 
  much, 
  there 
  is 
  no 
  way 
  

   of 
  stating 
  at 
  the 
  present 
  time. 
  

  

  Minimum 
  floiv 
  of 
  Hudson 
  river. 
  Measurements 
  of 
  the 
  flow 
  of 
  

   the 
  Hudson 
  river 
  have 
  been 
  kept 
  at 
  Mechanicville 
  since 
  October, 
  

   1887, 
  the 
  record 
  of 
  which 
  to 
  November, 
  1902, 
  inclusive, 
  is 
  presented 
  

   in 
  tables 
  Nos. 
  60, 
  61 
  and 
  62. 
  The 
  natural 
  flow 
  of 
  this 
  stream 
  is 
  

   somewhat 
  obscured 
  by 
  a 
  considerable 
  number 
  of 
  lumbermen's 
  

   reservoirs 
  on 
  its 
  headwaters, 
  the 
  total 
  storage 
  of 
  which 
  aggregates 
  

   4,000,000,000 
  cubic 
  feet, 
  as 
  well 
  as 
  by 
  two 
  reservoirs 
  on 
  Hoosic 
  

   river 
  in 
  Massachusetts. 
  In 
  1898-9 
  Indian 
  lake 
  reservoir 
  was 
  

   constructed 
  with 
  a 
  storage 
  capacity 
  of 
  about 
  5,000,000,000 
  cubic 
  

   feet. 
  The 
  water 
  stored 
  in 
  Indian 
  lake 
  is 
  usually 
  let 
  out 
  in 
  the 
  

   months 
  of 
  August, 
  September 
  and 
  October, 
  assisting 
  the 
  low-water 
  

   flow 
  materially, 
  while 
  the 
  water 
  from 
  the 
  lumbermen's 
  dams 
  is 
  let 
  

   out 
  in 
  the 
  spring, 
  and 
  tends 
  to 
  increase 
  floods 
  somewhat. 
  

  

  The 
  month 
  of 
  minimum 
  runoff 
  for 
  the 
  whole 
  period 
  covered 
  by 
  

   the 
  measurements 
  was 
  August, 
  1899, 
  the 
  mean 
  for 
  the 
  month 
  being 
  

   1393 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  4500 
  square 
  miles), 
  or 
  at 
  

   the 
  rate 
  of 
  0.31 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  The 
  flow 
  

   for 
  one 
  day 
  during 
  this 
  month 
  was 
  993 
  cubic 
  feet 
  per 
  second, 
  and 
  

  

  