﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  287 
  

  

  the 
  elevation 
  of 
  the 
  Susquehanna 
  river 
  at 
  Sidney 
  is 
  somewhat 
  less 
  

   than 
  1000 
  feet. 
  

  

  Charlotte 
  river. 
  This 
  river 
  rises 
  in 
  the 
  western 
  part 
  of 
  Scho- 
  

   harie 
  county 
  and 
  flows 
  west 
  into 
  the 
  main 
  Susquehanna 
  a 
  few 
  

   miles 
  east 
  of 
  Oneonta. 
  

  

  Oak 
  creek. 
  This 
  stream 
  rises 
  in 
  Schuyler 
  lake 
  and 
  flows 
  south, 
  

   joining 
  the 
  main 
  Susquehanna 
  three 
  miles 
  south 
  of 
  Otsego 
  lake. 
  

   Richfield 
  Springs 
  is 
  at 
  the 
  north 
  end 
  of 
  this 
  lake, 
  with 
  an 
  eleva- 
  

   tion 
  above 
  tide 
  of 
  1450 
  feet. 
  

  

  The 
  streams 
  of 
  the 
  Susquehanna 
  catchment 
  area 
  largely 
  issue 
  

   from 
  the 
  region 
  of 
  Chemung 
  sandstones 
  and 
  shales. 
  The 
  country 
  

   is 
  deforested 
  and 
  they 
  are 
  all 
  flashy 
  and 
  uncertain 
  in 
  their 
  flow. 
  

   While 
  there 
  are 
  no 
  measurements 
  verifying 
  the 
  statement, 
  the 
  

   writer 
  considers 
  it 
  probable 
  that 
  all, 
  or 
  nearly 
  all 
  of 
  them, 
  have 
  

   a 
  minimum 
  flow 
  not 
  exceeding 
  0.1 
  of 
  a 
  cubic 
  foot 
  per 
  second 
  per 
  

   square 
  mile, 
  and 
  several 
  of 
  them, 
  in 
  an 
  extremely 
  dry 
  time, 
  sink 
  

   to 
  about 
  0.05 
  of 
  a 
  cubic 
  foot 
  per 
  second 
  per 
  square 
  mile. 
  The 
  

   flood 
  flows, 
  on 
  the 
  contrary, 
  are 
  universally 
  large. 
  The 
  valleys 
  

   at 
  the 
  headwaters, 
  as 
  we 
  have 
  seen, 
  usually 
  lie 
  at 
  elevations 
  of 
  

   from 
  1200 
  to 
  1400 
  feet 
  above 
  tide. 
  

  

  In 
  regard 
  to 
  the 
  following 
  tabulation 
  of 
  the 
  catchment 
  areas 
  of 
  

   the 
  Susquehanna 
  river 
  and 
  its 
  tributaries 
  in 
  New 
  York, 
  it 
  must 
  

   l)e 
  stated 
  that 
  they 
  are 
  approximate 
  only. 
  Some 
  of 
  them 
  are 
  

   from 
  the 
  Report 
  on 
  Water 
  Power 
  in 
  the 
  Tenth 
  Census, 
  and 
  were 
  

   taken 
  by 
  planimeter 
  measurements 
  from 
  French's 
  Map 
  of 
  the 
  

   State 
  of 
  New 
  York, 
  published 
  in 
  1860. 
  Undoubtedly 
  when 
  topo- 
  

   graphic 
  maps 
  of 
  the 
  region 
  are 
  prepared, 
  they 
  will 
  be 
  modified 
  

   somewhat, 
  but 
  they 
  are 
  the 
  best 
  available 
  at 
  the 
  present 
  time. 
  

  

  The 
  following 
  are 
  the 
  approximate 
  catchment 
  areas 
  of 
  the 
  

   Susquehanna 
  and 
  its 
  tributaries 
  in 
  the 
  State 
  of 
  New 
  York 
  : 
  

  

  Square 
  miles 
  

  

  Main 
  river 
  below 
  mouth 
  of 
  Chemung 
  river 
  (south 
  of 
  Penn- 
  

   sylvania 
  line) 
  7,463 
  

  

  Total 
  area 
  north 
  of 
  Pennsylvania 
  line 
  6,267 
  

  

  Above 
  mouth 
  of 
  Chemung 
  river 
  4,945 
  

  

  Below 
  mouth 
  of 
  Chenango 
  river 
  3,982 
  

  

  