﻿108 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  mum 
  rainfall 
  of 
  47.79 
  inches, 
  with 
  a 
  runoff 
  of 
  19.38 
  inches, 
  

   occurred 
  in 
  1894. 
  1 
  The 
  minimum 
  rainfall 
  of 
  31 
  inches, 
  with 
  a 
  

   minimum 
  runoff 
  of 
  6.67 
  inches, 
  occurred 
  in 
  1895. 
  These 
  figures 
  

   of 
  rainfall 
  indicate 
  that 
  either 
  the 
  extreme 
  maximum 
  or 
  the 
  

   extreme 
  minimum 
  rainfall 
  has 
  not 
  yet 
  occurred 
  on 
  the 
  catchment 
  

   area 
  of 
  this 
  stream. 
  

  

  On 
  the 
  Muskingum 
  river 
  the 
  maximum 
  rainfall 
  thus 
  far 
  observed 
  

   is 
  56.97 
  inches, 
  with 
  a 
  maximum 
  runoff 
  of 
  26.84 
  inches, 
  which 
  

   occurred 
  in 
  1890. 
  The 
  observed 
  minimum 
  rainfall 
  of 
  29.84 
  inches, 
  

   with 
  the 
  corresponding 
  minimum 
  runoff 
  of 
  4.9 
  inches, 
  occurred 
  in 
  

   1895. 
  It 
  is 
  also 
  doubtful 
  if 
  either 
  the 
  extreme 
  maximum 
  or 
  the 
  

   extreme 
  minimum 
  rainfall 
  has 
  been 
  yet 
  observed 
  on 
  the 
  catchment 
  

   area 
  of 
  this 
  stream. 
  As 
  to 
  whether 
  the 
  rainfall 
  will 
  go 
  lower 
  

   there 
  is 
  no 
  certain 
  way 
  of 
  determining. 
  Moreover, 
  4.9 
  inches 
  

   seems 
  a 
  very 
  low 
  runoff 
  — 
  and 
  the 
  runoff 
  is 
  not 
  likely 
  to 
  be 
  less 
  

   than 
  this 
  figure. 
  However, 
  the 
  runoff 
  in 
  any 
  year 
  depends 
  very 
  

   largely 
  on 
  the 
  rainfall 
  of 
  the 
  months 
  from 
  December 
  to 
  May, 
  

   inclusive. 
  There 
  may 
  possibly 
  be, 
  therefore, 
  a 
  lower 
  annual 
  

   runoff 
  than 
  4.9 
  inches, 
  even 
  though 
  the 
  total 
  rainfall 
  should 
  exceed 
  

   29.84 
  inches. 
  The 
  rainfall 
  for 
  December 
  to 
  May, 
  inclusive, 
  was 
  

   13.04 
  inches. 
  The 
  runoff 
  for 
  that 
  period 
  was 
  4.04 
  inches. 
  

  

  Division 
  of 
  streams 
  into 
  classes. 
  The 
  foregoing 
  statements 
  indi- 
  

   cate 
  that, 
  as 
  regards 
  runoff, 
  streams 
  of 
  the 
  eastern 
  part 
  of 
  the 
  

   United 
  States 
  may 
  be 
  divided 
  into 
  classes. 
  In 
  the 
  first 
  class 
  will 
  

   fall 
  streams 
  where 
  the 
  maximum 
  rainfall 
  is 
  from 
  50 
  to 
  60 
  inches, 
  

   with 
  corresponding 
  runoff 
  somewhat 
  more 
  than 
  one 
  half 
  of 
  the 
  

   rainfall. 
  The 
  minimum 
  runoff 
  will 
  be 
  about 
  one 
  half 
  the 
  rainfall, 
  

   or 
  a 
  little 
  less. 
  These 
  statements, 
  it 
  may 
  be 
  again 
  repeated, 
  are 
  

   general 
  ones, 
  to 
  which 
  there 
  are 
  exceptions. 
  

  

  Another 
  class 
  of 
  streams, 
  of 
  which 
  the 
  Genesee 
  and 
  Muskingum 
  

   rivers 
  are 
  typical, 
  are 
  those 
  with 
  maximum 
  rainfall 
  on 
  their 
  

  

  l 
  In 
  the 
  combined 
  Genesee 
  river 
  and 
  Oatka 
  creek 
  record 
  the 
  maximum 
  

   runoff 
  of 
  21.22 
  inches 
  occurred 
  in 
  1890, 
  when 
  the 
  rainfall 
  is 
  placed 
  at 
  47.54 
  

   inches. 
  This, 
  however, 
  is 
  less 
  reliable 
  than 
  the 
  rainfall 
  and 
  runoff 
  of 
  

   1894, 
  which 
  latter 
  is 
  accordingly 
  given 
  the 
  preference. 
  

  

  