﻿492 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  gradually 
  decreased 
  during 
  the 
  month 
  of 
  August 
  until, 
  on 
  August 
  

   26, 
  it 
  was 
  only 
  216,000 
  gallons 
  per 
  day, 
  or 
  20 
  cubic 
  feet 
  per 
  minute, 
  

   which 
  was 
  the 
  lowest 
  point 
  reached 
  during 
  the 
  summer 
  of 
  1883. 
  

  

  This 
  stream 
  can 
  not 
  be 
  considered 
  a 
  good 
  water 
  yielder. 
  A 
  

   mean 
  discharge 
  of 
  216,000 
  gallons 
  in 
  twenty-four 
  hours 
  from 
  a 
  

   catchment 
  area 
  of 
  4.3 
  square 
  miles 
  represents 
  a 
  yield 
  of 
  0.334 
  cubic 
  

   foot 
  per 
  second, 
  or, 
  what 
  is 
  the 
  same 
  thing, 
  0.078 
  cubic 
  foot 
  per 
  

   second 
  per 
  square 
  mile. 
  It 
  is 
  apparent, 
  therefore, 
  that 
  even 
  a 
  

   spring-fed 
  stream 
  with 
  a 
  deep 
  valley 
  in 
  Chautauqua 
  county 
  may 
  

   at 
  times 
  furnish 
  a 
  very 
  small 
  outflow, 
  though 
  it 
  should 
  not 
  be 
  

   overlooked 
  that 
  the 
  flow 
  of 
  0.078 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  

   mile 
  was 
  the 
  extreme 
  minimum 
  for 
  one 
  day 
  only. 
  The 
  relations 
  

  

  Fig. 
  38 
  Cross-section 
  of 
  dam 
  near 
  Fredonia 
  on 
  west 
  branch 
  of 
  Canada 
  way 
  

   creek. 
  

  

  of 
  this 
  extreme 
  minimum 
  to 
  the 
  daily 
  flows 
  during 
  the 
  period 
  cov- 
  

   ered 
  by 
  the 
  measurements 
  may 
  be 
  easily 
  gathered 
  from 
  an 
  inspec- 
  

   tion 
  of 
  table 
  No. 
  81. 
  The 
  gradual 
  falling 
  in 
  water 
  yield 
  from 
  

   August 
  1 
  to 
  26 
  is 
  the 
  most 
  interesting 
  fact 
  revealed 
  by 
  these 
  

   measurements. 
  

  

  The 
  following 
  was 
  the 
  rainfall 
  at 
  the 
  point 
  of 
  measurement 
  

   during 
  the 
  month 
  of 
  August, 
  1883 
  : 
  

  

  Inches 
  

  

  August 
  3 
  . 
  0.04 
  

  

  August 
  13 
  0.10 
  

  

  August 
  20 
  0.05 
  

  

  August 
  23 
  0.05 
  

  

  August 
  28 
  1.98 
  

  

  