﻿354 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Huntingtonville 
  darn. 
  Two 
  or 
  more 
  readings 
  of 
  the 
  gage 
  are 
  

   taken 
  daily 
  and 
  a 
  mean 
  taken. 
  In 
  computing 
  the 
  flow 
  an 
  allow- 
  

   ance 
  of 
  200 
  cubic 
  feet 
  per 
  second 
  has 
  been 
  made 
  for 
  leakage 
  

   through 
  seams 
  and 
  crevices 
  in 
  the 
  rock, 
  underlying 
  the 
  dam. 
  

   This 
  amount 
  is 
  somewhat 
  general, 
  as 
  it 
  has 
  only 
  been 
  arrived 
  

   at 
  from 
  an 
  estimate 
  of 
  the 
  size 
  of 
  the 
  openings 
  from 
  the 
  state- 
  

   ment 
  of 
  eye 
  witnesses 
  when 
  the 
  water 
  was 
  drawn 
  down 
  in 
  the 
  

   summer 
  of 
  1897. 
  The 
  following 
  cut 
  shows 
  a 
  section 
  of 
  the 
  

   Huntingtonville 
  dam 
  on 
  Black 
  river: 
  

  

  Fig. 
  25 
  Section 
  of 
  dam 
  on 
  Black 
  river. 
  

  

  Geologically, 
  Black 
  river 
  lies 
  in 
  the 
  horizon 
  of 
  the 
  Trenton 
  

   limestone, 
  with 
  its 
  tributaries 
  rising 
  into 
  the 
  unclassified 
  

   granites 
  and 
  gneisses 
  of 
  the 
  Adirondack 
  region. 
  

  

  Discharge 
  measurements 
  of 
  Lake 
  Champlain. 
  Lake 
  Champlain 
  

   drains 
  an 
  area 
  of 
  7960 
  square 
  miles, 
  which 
  is 
  subdivided 
  as 
  fol- 
  

   lows: 
  

  

  Square 
  miles. 
  

  

  Area 
  in 
  Quebec 
  740 
  

  

  Area 
  in 
  Vermont 
  4,270 
  

  

  Area 
  in 
  New 
  York 
  2,950 
  

  

  Area 
  of 
  water 
  surface 
  of 
  lake 
  400 
  

  

  Total 
  8,360 
  

  

  