﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  591 
  

  

  As 
  already 
  shown, 
  when 
  interest 
  is 
  taken 
  into 
  account, 
  the 
  

   Mount 
  Morris 
  project 
  becomes 
  commercially 
  impracticable. 
  The 
  

   Portage 
  project, 
  on 
  the 
  other 
  hand, 
  shows 
  an 
  annual 
  income, 
  above 
  

   interest 
  account, 
  sinking 
  fund, 
  maintenance 
  and 
  repairs, 
  of 
  $307,- 
  

   460, 
  which, 
  capitalized 
  at 
  5 
  per 
  cent, 
  represents 
  $6,149,200. 
  If 
  

   we 
  assume 
  4 
  per 
  cent, 
  the 
  capitalization 
  of 
  the 
  annual 
  income 
  may 
  

   be 
  expected 
  ultimately 
  to 
  represent 
  $7,686,500. 
  

  

  Summary 
  of 
  Genesee 
  river 
  storage. 
  The 
  following 
  summation 
  

   of 
  the 
  Genesee 
  river 
  storage 
  projects 
  is 
  presented 
  as 
  embodying 
  

   the 
  main 
  points 
  involved. 
  

  

  1) 
  Of 
  the 
  several 
  available 
  sites 
  for 
  reservoirs 
  on 
  Genesee 
  river 
  

   that 
  at 
  Portage 
  is 
  preferable 
  to 
  others, 
  because 
  it 
  affords 
  the 
  

   largest 
  storage 
  at 
  the 
  smallest 
  cost 
  per 
  unit 
  volume. 
  

  

  2) 
  Serious 
  floods 
  have 
  occurred 
  a 
  number 
  of 
  times 
  in 
  the 
  Gene- 
  

   see 
  river 
  at 
  Kochester, 
  the 
  most 
  serious 
  being 
  that 
  of 
  March 
  1865. 
  

   The 
  floods 
  in 
  April 
  1896 
  and 
  March 
  1902 
  were 
  nearly 
  as 
  severe 
  

   as 
  the 
  flood 
  of 
  March 
  1865, 
  although, 
  as 
  the 
  river 
  channel 
  was 
  

   clear, 
  very 
  little 
  damage 
  ensued. 
  

  

  3) 
  As 
  the 
  result 
  of 
  three 
  years' 
  measurements 
  of 
  Genesee 
  river, 
  

   it 
  is 
  determined 
  that 
  the 
  minimum 
  flow 
  of 
  the 
  stream 
  may 
  for 
  the 
  

   entire 
  year 
  be 
  as 
  low 
  as 
  6.67 
  inches 
  on 
  the 
  catchment 
  area. 
  Since 
  

   1896 
  the 
  record 
  of 
  the 
  flow 
  of 
  the 
  stream 
  has 
  been 
  extended 
  with- 
  

   out 
  altering 
  the 
  conclusions 
  of 
  this 
  paragraph. 
  

  

  4) 
  A 
  study 
  of 
  existing 
  conditions 
  shows 
  that 
  the 
  Genesee 
  

   river 
  catchment 
  area 
  has 
  been 
  nearly 
  denuded 
  of 
  forests, 
  and 
  

   hence 
  that 
  severe 
  spring 
  floods 
  are 
  likely 
  to 
  be 
  frequent. 
  For 
  

   the 
  same 
  reason 
  the 
  summer 
  flow 
  of 
  the 
  stream 
  is 
  less 
  than 
  

   formerly. 
  

  

  5) 
  As 
  a 
  tentative 
  conclusion, 
  based 
  on 
  the 
  data 
  at 
  hand, 
  it 
  may 
  

   be 
  said 
  that 
  the 
  deforestation 
  of 
  a 
  catchment 
  area 
  may 
  tend 
  

   not 
  only 
  to 
  increase 
  floods 
  somewhat, 
  but 
  to 
  decrease 
  materially 
  

   the 
  amount 
  of 
  the 
  annual 
  runoff. 
  

  

  6) 
  A 
  comparison 
  of 
  the 
  conditions 
  existing 
  on 
  the 
  catchment 
  

   area 
  of 
  the 
  Genesee 
  river 
  with 
  those 
  of 
  the 
  upper 
  Hudson, 
  which 
  

   is 
  still 
  largely 
  in 
  forest, 
  shows 
  less 
  runoff 
  under 
  given 
  conditions 
  

   from 
  the 
  Genesee 
  than 
  from 
  the 
  Hudson, 
  thus 
  indicating 
  the 
  

   probable 
  effect 
  of 
  the 
  forest 
  in 
  increasing 
  the 
  runoff. 
  The 
  com- 
  

   parative 
  diagram 
  shown 
  in 
  fig. 
  11 
  is 
  pertinent 
  as 
  illustrating 
  this 
  

   point. 
  

  

  