﻿404 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  opposite 
  sides 
  of 
  an 
  island. 
  The 
  left 
  wing 
  has 
  a 
  crest 
  length 
  of 
  

   380 
  feet, 
  while 
  the 
  right 
  wing 
  has 
  a 
  crest 
  280 
  feet 
  long. 
  The 
  dis- 
  

   charge 
  over 
  the 
  main 
  dam 
  has 
  been 
  calculated 
  by 
  means 
  of 
  a 
  

   coefficient 
  determined 
  in 
  Cornell 
  University 
  experiment 
  No. 
  18, 
  

   representing 
  a 
  cross-section 
  nearly 
  identical 
  with 
  that 
  of 
  the 
  

   West 
  Troy 
  Water 
  Company's 
  dam. 
  With 
  a 
  rise 
  of 
  5 
  feet 
  on 
  the 
  

   gage, 
  the 
  water 
  begins 
  to 
  flow 
  over 
  a 
  masonry 
  racewall. 
  The 
  dis- 
  

   charge 
  over 
  this 
  portion 
  has 
  been 
  computed 
  from 
  Cornell 
  Univer- 
  

   sity 
  experiment 
  No. 
  12, 
  as 
  detailed 
  in 
  the 
  paper 
  On 
  the 
  Flow 
  of 
  

   Water 
  Over 
  Dams. 
  Plate 
  9 
  shows 
  the 
  dam 
  on 
  the 
  Mohawk 
  river 
  

   at 
  Dunsbach 
  Ferry. 
  

  

  Discharge 
  measurements 
  of 
  Mohawk 
  river 
  at 
  Rexford 
  Flats. 
  

   This 
  station 
  is 
  located 
  at 
  the 
  canal 
  feeder 
  dam 
  four 
  miles 
  below 
  

   Schenectady, 
  where 
  there 
  is 
  a 
  masonry 
  dam 
  with 
  a 
  timber 
  apron. 
  

   Experiments 
  on 
  the 
  Rexford 
  Flats 
  cross-section 
  were 
  made 
  at 
  Cor- 
  

   nell 
  University. 
  The 
  following 
  cut 
  shows 
  the 
  dam 
  on 
  Mohawk 
  

   river 
  at 
  Rexford 
  Flats 
  : 
  

  

  Fig. 
  28 
  Dam 
  on 
  Mohawk 
  river 
  at 
  Rexford 
  Flats. 
  

  

  Discharge 
  measurements 
  of 
  Mohawk 
  river 
  at 
  Little 
  Falls. 
  This 
  

   gaging 
  station 
  is 
  located 
  at 
  the 
  lower 
  or 
  Gilbert's 
  dam 
  at 
  Little 
  

   Falls. 
  It 
  is 
  a 
  circular 
  dam 
  of 
  masonry, 
  furnishing 
  power 
  for 
  the 
  

   Astoronga 
  Knitting 
  Mill 
  and 
  the 
  Little 
  Falls 
  Paper 
  Company's 
  

   Mills. 
  There 
  are 
  six 
  water 
  wheels 
  in 
  these 
  two 
  mills, 
  of 
  which 
  

   the 
  records 
  are 
  kept. 
  The 
  following 
  cut 
  shows 
  a 
  section 
  of 
  this 
  

   dam: 
  

  

  