﻿HYDROLOGY 
  OP 
  NEW 
  YORK 
  O 
  

  

  The 
  data 
  herein 
  embodied 
  have 
  been 
  gathered 
  from 
  many 
  

   sources 
  — 
  the 
  reports 
  of 
  the 
  State 
  Engineer 
  and 
  Surveyor, 
  the 
  

   Superintendent 
  of 
  Public 
  Works, 
  the 
  Forest 
  Commission, 
  the 
  State 
  

   Board 
  of 
  Health, 
  the 
  State 
  Weather 
  Service, 
  and 
  other 
  public 
  docu- 
  

   ments. 
  The 
  data 
  in 
  the 
  reports 
  on 
  the 
  water 
  power 
  of 
  the 
  United 
  

   States, 
  Tenth 
  Census, 
  have 
  been 
  used 
  in 
  some 
  cases 
  where 
  later 
  

   data 
  are 
  not 
  available. 
  During 
  the 
  years 
  1896 
  and 
  1897, 
  the 
  

   writer, 
  in 
  addition 
  to 
  his 
  regular 
  duties 
  in 
  the 
  State 
  Engineer's 
  

   Department, 
  gathered 
  a 
  large 
  amount 
  of 
  information 
  bearing 
  on 
  

   the 
  hydrology 
  of 
  the 
  State 
  and 
  not 
  published 
  in 
  the 
  reports 
  of 
  the 
  

   State 
  Engineer. 
  Much 
  of 
  this 
  was 
  in 
  the 
  way 
  of 
  piecing 
  out 
  

   earlier 
  information 
  and 
  bringing 
  the 
  subject 
  up 
  to 
  date. 
  

  

  Some 
  of 
  the 
  figures 
  as 
  to 
  the 
  catchment 
  areas 
  have 
  been 
  obtained 
  

   by 
  checking 
  those 
  given 
  in 
  the 
  reports 
  on 
  the 
  water 
  power 
  of 
  the 
  

   United 
  States, 
  Tenth 
  Census, 
  so 
  far 
  as 
  they 
  are 
  available, 
  and 
  

   by 
  planimeter 
  measurement 
  on 
  the 
  topographic 
  quadrangles' 
  of 
  

   the 
  State 
  made 
  by 
  the 
  United 
  States 
  Geological 
  Survey. 
  Bien's 
  

   atlas 
  of 
  the 
  State 
  of 
  New 
  York 
  has 
  also 
  been 
  used 
  as 
  a 
  check, 
  and 
  

   a 
  number 
  of 
  areas 
  have 
  been 
  taken 
  from 
  the 
  report 
  of 
  the 
  Deep 
  

   Waterways 
  Commission, 
  while 
  a 
  large 
  number 
  of 
  catchment 
  areas 
  

   have 
  been 
  taken 
  from 
  the 
  report 
  of 
  the 
  United 
  States 
  Board 
  of 
  

   Engineers 
  on 
  Deep 
  Waterways. 
  

  

  After 
  completing 
  the 
  original 
  report 
  to 
  the 
  United 
  States 
  Geo- 
  

   logical 
  Survey, 
  the 
  writer 
  continued 
  the 
  collection 
  of 
  data, 
  and 
  

   specially 
  in 
  1898 
  and 
  1899, 
  when 
  he 
  undertook 
  for 
  the 
  Board 
  of 
  

   Engineers 
  on 
  Deep 
  Waterways 
  the 
  investigation 
  of 
  a 
  water 
  supply 
  

   for 
  enlarged 
  canals 
  through 
  the 
  State 
  of 
  New 
  York. 
  The 
  report 
  

   to 
  this 
  Board 
  includes 
  a 
  detailed 
  study 
  of 
  the 
  hydrology 
  of 
  cen- 
  

   tral 
  New 
  York, 
  covering 
  three 
  hundred 
  and 
  eighty 
  octavo 
  pages. 
  

   This 
  report 
  was 
  published 
  as 
  an 
  executive 
  document 
  of 
  Congress, 
  

   but 
  only 
  a 
  few 
  hundred 
  copies 
  were 
  issued. 
  Tt 
  results, 
  then, 
  that 
  

   most 
  people 
  have 
  not 
  seen 
  this 
  report, 
  and 
  accordingly 
  consider- 
  

   able 
  use 
  has 
  been 
  made 
  of 
  the 
  matter 
  contained 
  therein. 
  The 
  

   report 
  is, 
  however, 
  in 
  most 
  of 
  the 
  leading 
  libraries 
  and 
  may 
  be 
  

   consulted 
  by 
  any 
  one 
  interested. 
  

  

  