﻿284 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  waters 
  is 
  1600 
  to 
  1700 
  feet 
  above 
  tide. 
  The. 
  catchment 
  area 
  is 
  145 
  

   square 
  miles. 
  

  

  Olean 
  creek. 
  The 
  principal 
  tributary 
  of 
  this 
  stream 
  is 
  the 
  

   Isehua 
  creek, 
  which 
  rises 
  in 
  the 
  northern 
  part 
  of 
  Chautauqua 
  

   county 
  and, 
  with 
  the 
  main 
  Olean 
  creek, 
  flows 
  south, 
  entering 
  the 
  

   Allegheny 
  river 
  at 
  Olean. 
  The 
  elevation 
  at 
  its 
  mouth 
  is 
  1433 
  feet, 
  

   while 
  the 
  headwaters 
  lie 
  at 
  an 
  elevation 
  of 
  about 
  1800 
  feet 
  above 
  

   tide. 
  None 
  of 
  these 
  streams 
  is 
  important 
  for 
  water 
  power. 
  

  

  The 
  topography 
  of 
  the 
  catchment 
  areas 
  of 
  all 
  these 
  streams 
  

   tributary 
  to 
  Allegheny 
  river 
  is 
  rugged. 
  With 
  the 
  exception 
  of 
  a 
  

   portion 
  of 
  the 
  Allegheny 
  river 
  itself, 
  and 
  some 
  of 
  its 
  main 
  tribu- 
  

   taries, 
  the 
  slopes 
  are 
  several 
  feet 
  to 
  the 
  mile. 
  The 
  slope 
  of 
  the 
  

   main 
  Allegheny 
  river 
  is 
  slight. 
  

  

  The 
  Tunungnant 
  creek 
  enters 
  the 
  Allegheny 
  river 
  four 
  miles 
  

   south 
  of 
  Carrollton, 
  from 
  Pennsylvania. 
  

  

  Susquehanna 
  River 
  System 
  

  

  Susquehanna 
  river. 
  The 
  headwaters 
  of 
  the 
  north 
  branch 
  of 
  the 
  

   Susquehanna 
  lie 
  chiefly 
  in 
  the 
  State 
  of 
  New 
  York, 
  the 
  catchment 
  

   area 
  in 
  this 
  State 
  being 
  taken 
  at 
  6267 
  square 
  miles. 
  The 
  main 
  

   stream 
  may 
  be 
  considered 
  as 
  rising 
  in 
  Otsego 
  lake, 
  from 
  which 
  it 
  

   flows 
  first 
  southwesterly, 
  then 
  westerly 
  with 
  a 
  short 
  portion 
  of 
  its 
  

   course 
  south 
  of 
  the 
  Pennsylvania 
  line. 
  It 
  finally 
  leaves 
  New 
  York 
  

   State 
  in 
  Tioga 
  county 
  at 
  Waverly. 
  The 
  Susquehanna, 
  while 
  one 
  

   of 
  the 
  large 
  rivers 
  of 
  New 
  York, 
  is 
  not 
  at 
  all 
  important 
  as 
  regards- 
  

   water 
  power. 
  The 
  main 
  river 
  and 
  most 
  of 
  its 
  tributaries 
  in 
  New 
  

   York 
  flow 
  through 
  a 
  rolling 
  country 
  with 
  fairly 
  uniform 
  declivity. 
  

   While 
  utilized 
  for 
  small 
  powers 
  in 
  many 
  places, 
  thus 
  far 
  there 
  

   are 
  no 
  extensive 
  developments 
  on 
  either 
  the 
  main 
  stream 
  or 
  its 
  

   branches, 
  except 
  at 
  Binghamton, 
  where 
  considerable 
  water 
  power 
  

   is 
  utilized. 
  The 
  slope 
  of 
  the 
  stream 
  in 
  and 
  near 
  New 
  York 
  State 
  

   is 
  shown 
  by 
  the 
  following 
  elevations, 
  in 
  feet, 
  above 
  tidewater: 
  

  

  Feet 
  

  

  At 
  Towanda, 
  a 
  few 
  miles 
  south 
  of 
  the 
  State 
  line 
  70O 
  

  

  At 
  Athens, 
  on 
  Chemung 
  river, 
  near 
  the 
  State 
  line 
  744 
  

  

  At 
  Otsego 
  lake 
  1,193 
  

  

  