﻿486 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Floods 
  in 
  Susquehanna 
  river. 
  By 
  common: 
  consent 
  the 
  highest 
  

   Hood 
  experienced 
  in 
  this 
  stream 
  within 
  the 
  historical 
  period 
  was 
  

   in 
  March, 
  1S65, 
  but 
  aside 
  from 
  the 
  fact 
  that 
  considerable 
  damage 
  

   ensued, 
  little 
  is 
  known 
  in 
  regard 
  thereto. 
  The 
  entire 
  region 
  

   drained 
  by 
  the 
  Susquehanna 
  river 
  in 
  New 
  York 
  State, 
  as 
  well 
  as 
  in 
  

   Pennsylvania, 
  is 
  not 
  only 
  mountainous, 
  but 
  largely 
  denuded 
  of 
  

   timber. 
  The 
  flood-flows 
  of 
  the 
  stream 
  are, 
  therefore, 
  large. 
  The 
  

   catchment 
  area 
  above 
  Chenango 
  river 
  is 
  2400 
  square 
  miles. 
  There 
  

   is 
  a 
  State 
  dam, 
  formerly 
  used 
  in 
  connection 
  with 
  Chenango 
  canal, 
  

   across 
  this 
  river 
  at 
  Binghamton, 
  and 
  S. 
  E. 
  Monroe, 
  City 
  Engineer 
  

  

  9 
  

  

  & 
  

  

  C)> 
  

  

  EI.8Z& 
  r 
  

  

  Fig. 
  37 
  Outline 
  section 
  of 
  State 
  dam 
  at 
  Binghamton. 
  

  

  of 
  Binghamton, 
  has 
  compiled 
  a 
  map 
  on 
  which 
  he 
  has 
  placed 
  high- 
  

   water 
  elevations 
  during 
  the 
  flood 
  of 
  March, 
  1902, 
  together 
  with 
  a 
  

   plan 
  elevation 
  and 
  cross-section 
  of 
  dam. 
  The 
  figures 
  show 
  that 
  

   the 
  depth 
  on 
  the 
  crest 
  of 
  this 
  dam 
  was 
  13.1 
  feet, 
  with 
  a 
  difference 
  

   of 
  elevation 
  above 
  and 
  below 
  the 
  dam 
  of 
  two 
  feet. 
  Computing 
  the 
  

   flow 
  over 
  this 
  dam 
  as 
  a 
  submerged 
  weir, 
  and 
  making 
  various 
  cor- 
  

   rections, 
  including 
  one 
  for 
  the 
  water 
  flowing 
  through 
  the 
  lock 
  at 
  

   the 
  south 
  side 
  of 
  the 
  river, 
  it 
  is 
  found 
  that 
  the 
  flood-flow 
  in 
  March, 
  

   1902, 
  was 
  about. 
  70,000 
  to 
  80,000 
  cubic 
  feet 
  per 
  second, 
  or 
  possibly 
  

   at 
  the 
  rate 
  of 
  something 
  over 
  33 
  cubic 
  feet 
  per 
  second 
  per 
  

   square 
  mile. 
  A 
  flow 
  at 
  this 
  rate 
  is 
  less 
  than 
  might 
  reasonably 
  

   be 
  expected; 
  accordingly 
  it 
  may 
  be 
  assumed 
  that 
  the 
  flood 
  of 
  

   March, 
  1902, 
  was 
  not 
  the 
  largest 
  flood 
  likely 
  to 
  occur 
  on 
  the 
  Sus- 
  

   quehanna 
  river. 
  Comparing 
  it 
  with 
  other 
  similar 
  streams, 
  there 
  

   seems 
  reason 
  for 
  supposing 
  that 
  at 
  some 
  time 
  there 
  may 
  be 
  a 
  flood 
  

   here 
  of 
  at 
  least 
  50 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  mile. 
  Such 
  

   extreme 
  floods, 
  however, 
  do 
  not 
  occur 
  more 
  than 
  once 
  or 
  twice 
  in 
  

   a 
  century. 
  The 
  flood 
  of 
  March, 
  1865, 
  which 
  is 
  the 
  largest 
  known 
  f 
  

  

  