﻿HYDROLOGY 
  OP 
  NEW 
  YORK 
  < 
  

  

  information 
  has 
  been 
  gathered. 
  These 
  are 
  still, 
  so 
  far 
  as 
  definite 
  

   information 
  is 
  concerned, 
  practically 
  unknown, 
  although 
  a 
  slight 
  

   beginning 
  has 
  been 
  made 
  by 
  the 
  United 
  States 
  Geological 
  Survey. 
  

   The 
  information 
  given 
  herein 
  is 
  therefore, 
  such 
  as 
  is 
  available, 
  

   either 
  from 
  personal 
  knowledge 
  or 
  the 
  work 
  of 
  others. 
  

  

  The 
  information 
  as 
  to 
  the 
  hydrology 
  of 
  New 
  York 
  has 
  grown 
  

   so 
  rapidly 
  in 
  the 
  last 
  few 
  years 
  that 
  considerable 
  condensation 
  

   was 
  necessary 
  in 
  order 
  to 
  keep 
  within 
  the 
  limits 
  of 
  even 
  as 
  great 
  

   an 
  extension 
  of 
  the 
  original 
  papers 
  as 
  is 
  herewith 
  included. 
  The 
  

   omission 
  of 
  some 
  matters 
  which 
  may 
  seem 
  to 
  the 
  reader 
  important 
  

   is 
  therefore 
  no 
  certain 
  index 
  that 
  they 
  have 
  been 
  overlooked, 
  but 
  

   merely 
  indicates 
  that 
  they 
  have 
  not 
  seemed 
  to 
  the 
  writer 
  import- 
  

   ant 
  enough 
  to 
  mention. 
  The 
  report 
  has 
  been 
  very 
  largely 
  rewrit- 
  

   ten 
  and 
  extended 
  from 
  an 
  original 
  length 
  of 
  200 
  pages 
  to 
  900 
  pages. 
  

   The 
  meteorological 
  tables, 
  as 
  well 
  as 
  the 
  tables 
  of 
  stream 
  flow, 
  

   have 
  never 
  before 
  appeared 
  in 
  their 
  present 
  form. 
  All 
  these 
  

   tables 
  have 
  been 
  specially 
  computed 
  and 
  rearranged 
  for 
  this 
  

   report. 
  The 
  data 
  of 
  rainfall, 
  temperature 
  and 
  stream 
  flow 
  have 
  

   been 
  arranged 
  with 
  reference 
  to 
  a 
  water 
  year 
  beginning 
  with 
  

   December 
  and 
  ending 
  with 
  November. 
  Cubic 
  feet 
  per 
  second, 
  

   inches 
  on 
  the 
  catchment 
  area 
  and 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  

   mile 
  are, 
  except 
  in 
  some 
  of 
  the 
  longer 
  records, 
  given 
  in 
  columns 
  

   side 
  by 
  side, 
  thus 
  showing 
  at 
  a 
  glance 
  the 
  comparative 
  results 
  

   and 
  very 
  greatly 
  extending 
  the 
  value 
  of 
  the 
  tables. 
  The 
  writer's 
  

   thanks 
  are 
  due 
  to 
  his 
  daughter, 
  Myra 
  Willson 
  Rafter, 
  for 
  com- 
  

   puting 
  these 
  tables. 
  

  

  The 
  criticism 
  has 
  been 
  made 
  that 
  the 
  writer's 
  views 
  on 
  some 
  

   of 
  the 
  questions 
  herein 
  discussed 
  are 
  not 
  the 
  same 
  now 
  as 
  for- 
  

   merly. 
  On 
  this 
  point 
  it 
  may 
  be 
  stated 
  that 
  his 
  work 
  on 
  the 
  

   hydrology 
  of 
  New 
  York 
  has, 
  aside 
  from 
  several 
  formal 
  reports, 
  

   as 
  on 
  Genesee 
  river, 
  Hudson 
  river, 
  report 
  to 
  the 
  Board 
  of 
  Engineers 
  

   on 
  Deep 
  Waterways, 
  etc. 
  been 
  largely 
  a 
  matter 
  of 
  opportunity, 
  and 
  

   such 
  writing, 
  while 
  extensive 
  enough, 
  is 
  scattered 
  through 
  a 
  large 
  

   number 
  of 
  miscellaneous 
  papers. 
  Nevertheless 
  the 
  writer 
  has 
  

   casually 
  discussed 
  in 
  these 
  papers 
  a 
  number 
  of 
  the 
  most 
  important 
  

   questions 
  confronting 
  the 
  people 
  of 
  New 
  York. 
  With 
  more 
  study 
  

  

  