﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  513 
  

  

  mostly 
  deforested, 
  the 
  minimum 
  flows 
  will 
  run 
  as 
  low 
  as 
  from 
  0.05 
  

   to 
  0.1 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  In 
  extreme 
  cases 
  

   they 
  may 
  be 
  even 
  less 
  than 
  this. 
  In 
  the 
  chapter 
  on 
  the 
  classifica- 
  

   tion 
  of 
  streams 
  we 
  have 
  shown 
  that 
  Oroton 
  river 
  properly 
  classi- 
  

   fies 
  with 
  the 
  Genesee. 
  It 
  is 
  also 
  shown 
  that 
  this 
  stream 
  has 
  

   low 
  minimum 
  flows. 
  Spring-fed 
  streams 
  in 
  western 
  New 
  York 
  

   and 
  those 
  with 
  considerable 
  lake 
  surface 
  pondage 
  may 
  be 
  expected 
  

   to 
  have 
  somewhat 
  greater 
  minimum 
  flows 
  than 
  the 
  preceding. 
  

  

  In 
  the 
  central 
  part 
  of 
  the 
  State 
  streams 
  flowing 
  from 
  the 
  south 
  

   side 
  of 
  the 
  Mohawk 
  north 
  into 
  that 
  stream 
  have 
  generally 
  low 
  

   minimum 
  flows 
  ; 
  they 
  do 
  not 
  differ 
  greatly 
  f 
  romi 
  the 
  Genesee 
  river 
  

   and 
  tributaries. 
  To 
  the 
  north 
  of 
  the 
  Mohawk 
  river 
  the 
  conditions 
  

   are 
  different 
  and 
  the 
  flow 
  of 
  the 
  streams 
  is 
  larger. 
  

  

  The 
  Mohawk 
  river 
  and 
  upper 
  Hudson 
  may 
  be 
  placed, 
  while 
  their 
  

   present 
  condition 
  of 
  forestation 
  is 
  maintained, 
  at 
  a 
  minimum 
  of 
  

   about 
  0.2 
  to 
  0.25 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  Reser- 
  

   voirs 
  on 
  the 
  Hoosic 
  river 
  in 
  Massachusetts 
  tend 
  to 
  increase 
  the 
  

   minimum 
  flow 
  of 
  the 
  Hudson 
  at 
  Mechanicville 
  somewhat. 
  

  

  Streams 
  issuing 
  from 
  the 
  Catskill 
  mountains, 
  where 
  conditions 
  

   similar 
  to 
  those 
  on 
  the 
  Genesee 
  river 
  obtain, 
  have 
  minimum 
  flows 
  

   of 
  from 
  0.05 
  to 
  0.1 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  1 
  

  

  The 
  streams 
  of 
  Long 
  Island, 
  issuing 
  from 
  sand 
  plains, 
  will 
  give 
  

   larger 
  yields, 
  the 
  available 
  measurements 
  showing 
  minimum 
  run- 
  

   offs 
  as 
  high 
  as 
  0.5 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile, 
  but 
  

   whether 
  these 
  runoffs 
  would 
  be 
  maintained 
  in 
  a 
  minimum 
  dry 
  

   year 
  is 
  uncertain; 
  at 
  present, 
  it 
  appears 
  somewhat 
  improbable. 
  

   Moreover, 
  it 
  is 
  proper 
  to 
  say 
  that 
  these 
  measurements 
  were 
  made 
  

   about 
  fifty 
  years 
  ago 
  and 
  there 
  is 
  some 
  doubt 
  whether 
  they 
  are 
  

   entirely 
  reliable; 
  probably 
  an 
  extended 
  series 
  would 
  show 
  per- 
  

   haps 
  0.35 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile 
  as 
  the 
  minimum. 
  

  

  The 
  streams 
  of 
  the 
  northern 
  part 
  of 
  the 
  State, 
  issuing 
  from 
  

   denser 
  forests 
  and 
  with 
  large 
  lake 
  storage, 
  may 
  be 
  expected 
  to 
  

   give 
  minimum 
  yields 
  somewhat 
  in 
  excess 
  of 
  0.3 
  cubic 
  foot 
  per 
  

   second 
  per 
  square 
  mile, 
  although 
  until 
  definite 
  measurements 
  are 
  

   made 
  this 
  must 
  be 
  considered 
  an 
  inference 
  merely. 
  

  

  1 
  Streams 
  issuing 
  from 
  the 
  Catskill 
  region 
  have 
  not 
  been 
  gaged 
  long 
  enough 
  

   to 
  entirely 
  settle 
  the 
  question 
  of 
  minimum 
  flows. 
  The 
  difference 
  in 
  forest- 
  

   ation 
  may 
  be 
  taken 
  into 
  account 
  in 
  estimating 
  these 
  flows. 
  

  

  