﻿1 
  68 
  GeoIvOGical 
  Survey 
  of 
  Louisiana 
  [Sect. 
  

  

  channel 
  was 
  cut 
  between 
  the 
  two. 
  Shortly 
  after 
  this 
  time 
  the 
  

   river 
  cut 
  across 
  the 
  narrow 
  neck 
  of 
  the 
  great 
  bend, 
  leaving 
  a 
  

   great 
  half 
  -moon 
  shaped 
  connection 
  with 
  the 
  old 
  bayou. 
  

  

  A 
  second 
  stream, 
  occupying 
  a 
  fairly 
  deep 
  cypress-fringed 
  

   channel 
  in 
  the 
  middle 
  of 
  a 
  'level 
  bottom 
  similar 
  to 
  those 
  which 
  

   accompany 
  all 
  streams 
  of 
  even 
  moderate 
  size 
  over 
  all 
  northern 
  

   I^ouisiana,* 
  entered 
  the 
  river 
  bottoms 
  above 
  Irving's 
  bluff. 
  It 
  

   followed 
  somewhat 
  closely 
  the 
  western 
  hills 
  ; 
  passed 
  through 
  the 
  

   eastern 
  part 
  of 
  what 
  is 
  now 
  Clear 
  lake 
  and 
  at 
  the 
  lower 
  end 
  of 
  

   what 
  is 
  now 
  Stumpy 
  bayou 
  emptied 
  into 
  a 
  large 
  bayou 
  coming 
  

   from 
  the 
  west. 
  

  

  This 
  large 
  stream 
  was 
  the 
  ancestor 
  of 
  Cypress 
  and 
  Twelve 
  

   Mile 
  bayous. 
  It 
  was 
  a 
  fairly 
  rapid 
  cypress-fringed 
  stream 
  with 
  

   a 
  slope 
  of 
  possibly 
  a 
  foot 
  to 
  the 
  mile. 
  It 
  meandered 
  through 
  a 
  

   fairly 
  level 
  valley 
  covered 
  with 
  over-cup 
  oak 
  and 
  a 
  few 
  scattering 
  

   pine 
  trees 
  and 
  after 
  its 
  entrance 
  to 
  the 
  river 
  valley, 
  where 
  it 
  

   received 
  the 
  waters 
  of 
  the 
  ancient 
  Black 
  bayou, 
  it 
  meandered 
  

   through 
  the 
  river 
  bottoms, 
  now 
  near, 
  now 
  bending 
  far 
  out 
  from 
  

   the 
  Albany 
  line 
  of 
  hills. 
  Somewhere 
  near 
  Albany 
  it 
  probably 
  

   received 
  the 
  waters 
  of 
  the 
  old 
  Black 
  lake 
  and 
  Red 
  bayou 
  

   drainage 
  system. 
  From 
  there 
  its 
  course 
  to 
  the 
  river 
  was 
  along 
  

   the 
  line 
  of 
  the 
  present 
  Twelve 
  Mile 
  bayou. 
  

  

  At 
  Shreveport 
  another 
  little 
  creek 
  valley 
  with 
  its 
  crooked 
  little 
  

   stream 
  opened 
  into 
  the 
  river 
  valley. 
  

  

  The 
  formation 
  of 
  Cross, 
  Caddo 
  and 
  Ferry 
  lakes. 
  — 
  When 
  the 
  raft 
  

   in 
  its 
  progress 
  up 
  the 
  river 
  approached 
  the 
  mouth 
  of 
  the 
  little 
  

   creek 
  which 
  drained 
  Cross 
  lake 
  valley, 
  the 
  water 
  was 
  backed 
  up 
  

   into 
  the 
  valley. 
  As 
  the 
  distance 
  between 
  the 
  mouth 
  of 
  the 
  

   little 
  stream 
  and 
  the 
  raft 
  diminished 
  the 
  level 
  of 
  the 
  water 
  in 
  the 
  

   valley 
  was 
  raised 
  and 
  when 
  the 
  raft 
  reached 
  the 
  mouth 
  of 
  the 
  

   creek 
  the 
  water 
  in 
  the 
  valley 
  reached 
  a 
  level 
  equal 
  to 
  the 
  banks 
  

   of 
  the 
  river. 
  

  

  When 
  the 
  mouth 
  of 
  Twelve 
  Mile 
  bayou 
  was 
  reached 
  the 
  lower 
  

   part 
  of 
  the 
  Shreveport-Blaukton's 
  bluffs 
  bottom-basin 
  was 
  filled 
  

   with 
  water 
  forming 
  Sodo 
  lake. 
  The 
  water 
  was 
  also 
  backed 
  up 
  

   into 
  the 
  Ferry 
  lake 
  valle}^ 
  

  

  The 
  flooding 
  of 
  Ferry 
  lake 
  valley 
  killed 
  all 
  the 
  trees. 
  After 
  

  

  * 
  For 
  a 
  discussion 
  of 
  similar 
  creek 
  bottoms 
  see 
  article 
  on 
  page 
  68. 
  

  

  