﻿308 
  ANNUAL 
  REPORT 
  SMITHSONIAN 
  INSTITUTION, 
  1W22. 
  

  

  The 
  linear 
  measurements 
  of 
  the 
  canal 
  and 
  its 
  contributory 
  works 
  

   as 
  they 
  existed 
  in 
  August, 
  1918, 
  are 
  summarized 
  in 
  the 
  following 
  

   table 
  : 
  

  

  Feet. 
  

  

  Leveed 
  portion 
  of 
  lower 
  canal 
  215 
  

  

  Gross 
  length 
  of 
  lower 
  canal 
  285 
  

  

  Length 
  of 
  flooded 
  slough 
  260 
  

  

  Approximate 
  length 
  of 
  upper 
  canal 
  200 
  

  

  Total 
  length 
  of 
  water 
  course 
  745 
  

  

  Approximate 
  length 
  of 
  former 
  water 
  course 
  and 
  its 
  trail-like 
  continua- 
  

   tion 
  400 
  

  

  Total 
  length 
  of 
  entire 
  system 
  of 
  works 
  from 
  river 
  to 
  head 
  1,145 
  

  

  