﻿584 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  at 
  least 
  457 
  cubic 
  feet 
  per 
  second 
  is 
  allowed 
  to 
  flow 
  continually 
  

   at 
  Portage 
  and 
  at 
  least 
  1000 
  cubic 
  feet 
  per 
  second 
  is 
  always 
  flow- 
  

   ing 
  at 
  Rochester 
  in 
  addition 
  to 
  the 
  amount 
  required 
  for 
  canal 
  

   purposes, 
  The 
  figures 
  given 
  in 
  column 
  (2) 
  show 
  the 
  proposed 
  

   minimum 
  flow 
  at 
  Rochester, 
  this 
  being 
  the 
  1000 
  cubic 
  feet 
  per 
  

   second 
  noted 
  above, 
  together 
  with 
  80 
  cubic 
  feet 
  per 
  second 
  for 
  

   the 
  canal 
  for 
  the 
  months 
  from 
  June 
  to 
  November, 
  inclusive, 
  and 
  

   177 
  cubic 
  feet 
  per 
  second 
  for 
  the 
  month 
  of 
  May. 
  Columns 
  (3) 
  

   and 
  (4) 
  give 
  the 
  discharges 
  at 
  Kochester 
  and 
  Portage 
  under 
  

   natural 
  conditions. 
  Column 
  (5) 
  gives 
  the 
  difference 
  between 
  

   these, 
  or 
  the 
  quantity 
  of 
  water 
  entering 
  the 
  river 
  below 
  Portage. 
  

   Column 
  (6) 
  gives 
  the 
  amount 
  which 
  goes 
  to 
  the 
  canal 
  while 
  

   column 
  (7) 
  gives 
  the 
  ratio 
  of 
  amount 
  to 
  canal 
  to 
  actual 
  flow. 
  

   Column 
  (8) 
  gives 
  the 
  minimum 
  amount 
  to 
  be 
  added 
  at 
  Portage 
  in 
  

   order 
  to 
  maintain 
  the 
  proposed 
  minimum 
  flow 
  at 
  Kochester 
  of 
  

   1000 
  cubic 
  feet 
  per 
  second, 
  not 
  including 
  the 
  amount 
  taken 
  by 
  the 
  

   canal. 
  The 
  quantity 
  available 
  at 
  Kochester 
  for 
  power 
  purposes 
  

   is 
  shown 
  in 
  column 
  (9). 
  The 
  actual 
  outflow 
  from 
  the 
  Portage 
  

   reservoir 
  is 
  given 
  in 
  column 
  (10) 
  in 
  cubic 
  feet 
  per 
  second, 
  while 
  

   column 
  (12) 
  gives 
  the 
  same 
  thing 
  in 
  inches 
  on 
  the 
  catchment 
  area. 
  

   Column 
  (11) 
  gives 
  the 
  surplus 
  flowing 
  over 
  the 
  spillway 
  at 
  the 
  

   Portage 
  reservoir. 
  

  

  Table 
  No. 
  85 
  exhibits 
  the 
  condition 
  of 
  the 
  reservoir 
  from 
  month 
  

   to 
  month 
  under 
  the 
  above 
  conditions. 
  The 
  figures 
  are 
  given 
  not 
  

   in 
  cubic 
  content 
  but 
  in 
  equivalent 
  depth 
  in 
  inches 
  on 
  the 
  total 
  

   tributary 
  catchment 
  of 
  1000 
  square 
  miles. 
  The 
  reservoir 
  is 
  as- 
  

   sumed 
  to 
  be 
  full 
  at 
  the 
  beginning 
  of 
  June 
  1894, 
  the 
  total 
  storage 
  

   of 
  the 
  reservoir 
  being 
  equivalent 
  to 
  6.46 
  inches 
  in 
  depth 
  on 
  the 
  

   catchment 
  area. 
  The 
  total 
  waste 
  from 
  June 
  1, 
  1894, 
  to 
  December 
  

   1, 
  1896, 
  equals, 
  under 
  the 
  conditions 
  of 
  this 
  table, 
  2.11 
  inches 
  on 
  

   the 
  catchment. 
  

  

  Similar 
  tables 
  have 
  been 
  computed 
  shoAving 
  the 
  regulation 
  of 
  

   the 
  river 
  as 
  affected 
  by 
  the 
  storage 
  at 
  Portage 
  of 
  7,500,000,000 
  

   cubic 
  feet 
  of 
  water 
  for 
  the 
  same 
  period, 
  with 
  at 
  least 
  300 
  cubic 
  

   feet 
  per 
  second 
  always 
  flowing 
  at 
  Portage, 
  and 
  at 
  least 
  600 
  cubic 
  

   feet 
  per 
  second 
  at 
  Rochester, 
  in 
  addition 
  to 
  the 
  amount 
  required 
  

   for 
  the 
  canal. 
  The 
  chief 
  difference 
  between 
  these 
  two 
  tables 
  is 
  in 
  

   the 
  amount 
  of 
  water 
  utilized. 
  In 
  the 
  case 
  of 
  a 
  reservoir 
  of 
  

   15,000,000,000 
  cubic 
  feet 
  capacity, 
  during 
  only 
  three 
  months 
  of 
  

  

  