﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  253 
  

  

  power 
  development 
  upon 
  them, 
  but 
  which 
  are 
  not 
  specifically 
  

   mentioned 
  here. 
  

  

  Below 
  Troy 
  the 
  tributaries 
  of 
  the 
  Hudson 
  river 
  are 
  mostly 
  small 
  

   and 
  generally 
  not 
  of 
  very 
  great 
  importance, 
  although 
  some 
  of 
  them 
  

   have 
  considerable 
  power 
  development. 
  One 
  of 
  them, 
  Oroton 
  river, 
  

   is 
  the 
  principal 
  source 
  of 
  water 
  supply 
  of 
  the 
  City 
  of 
  New 
  York. 
  

   On 
  this 
  part 
  of 
  the 
  river, 
  the 
  catchment 
  basin 
  is 
  rather 
  narrow, 
  

   and 
  many 
  of 
  the 
  streams 
  issuing 
  from 
  the 
  highlands 
  at 
  either 
  side 
  

   have 
  such 
  small 
  •catchment 
  areas 
  as 
  to 
  carry 
  only 
  moderate 
  quan- 
  

   tities 
  of 
  water. 
  

  

  Tides 
  in 
  Hudson 
  river. 
  The 
  following 
  are 
  the 
  elevations 
  of 
  mean 
  

   tide, 
  mean 
  low 
  tide 
  and 
  mean 
  high 
  tide 
  above 
  mean 
  sea 
  level 
  at 
  

   New 
  York, 
  and 
  the 
  mean 
  rise 
  and 
  fall 
  of 
  tides 
  at 
  various 
  points 
  

   along 
  the 
  tidal 
  estuary 
  between 
  New 
  York 
  bay 
  and 
  the 
  Troy 
  dam 
  : 
  

  

  Mean 
  Mean 
  Mean 
  Mean 
  rise 
  

  

  Locality 
  tide 
  low 
  tide 
  high 
  tide 
  and 
  fall 
  

  

  Sandy 
  Hook 
  4.70 
  

  

  Governors 
  Island 
  0.00 
  2.20 
  2.20 
  4.40 
  

  

  Dobbs 
  Ferry 
  0.18 
  1.62 
  1.98 
  3.60 
  

  

  Coxsackie 
  light-house 
  1.68 
  . 
  17 
  3 
  . 
  53 
  3 
  . 
  70 
  

  

  New 
  Baltimore 
  1.73 
  0.02 
  3.44 
  3.42 
  

  

  Ooeymans 
  1.88 
  0.44 
  3.31 
  2.87 
  

  

  Castleton 
  2.09 
  0.82 
  3.35 
  2.53 
  

  

  VanWies 
  2.13 
  0.82 
  3.29 
  2.33 
  

  

  Albany 
  2.43 
  1.27 
  3.59 
  2.32 
  

  

  Nail 
  works 
  2.78 
  1.81 
  3.75 
  1.94 
  

  

  Troy 
  dam 
  3.77 
  3.37 
  4.17 
  0.80 
  

  

  The 
  following 
  gives 
  the 
  hight 
  above 
  tidewater 
  at 
  New 
  York 
  of 
  

   a 
  number 
  of 
  points 
  on 
  the 
  Hudson 
  river 
  : 
  

  

  Feet 
  

  

  New 
  York 
  (at 
  mouth) 
  0.0 
  

  

  Troy 
  3.8 
  

  

  Saratoga 
  dam 
  ( 
  crest) 
  102 
  . 
  

  

  Fort 
  Edward 
  (below 
  dam) 
  118 
  . 
  

  

  Glens 
  Falls 
  (crest 
  of 
  feeder 
  dam) 
  284.0 
  

  

  