16 BULLETIN" 198, U. S. DEPARTMENT OF AGRICULTURE. 
All improvements were planned from the data collected by the 
preliminary survey, as the ditches have not been located in the field. 
The location survey may show that some slight changes would be 
advisable, but such changes will not materially affect the amount of 
excavation. The lateral ditches in most cases follow section lines to 
avoid cutting up the land into irregular tracts, but it was necessary 
to locate some of them without regard to land lines. The main 
ditches are briefly discussed in following paragraphs: 
Ditch No. 13. — It is proposed to construct an earth dam, at an 
estimated cost of $5,000, across Walnut Lake near the center of sec. 
11, T. 10 S., R. 4 W., and to divert the water from the Wells Bayou 
watershed to Bayou Macon through ditch No. 13. The probable 
high water in Walnut Lake will be .155.7, which is approximately the 
same as that under existing conditions. The low-water elevation will 
not be changed to any appreciable extent. A small earth dam is to 
be constructed across Caney Bayou in sec. 33, T. 10 S., R. 4 W., at 
an estimated cost of $300, to prevent overflow into the district from 
Eastham Brake. The side slopes of ditch No. 13 are planned to be 
1 to 1 except from station 450 (in sec. 12, T. 11 S., R. 4 W.) to station 
781 (the end), where side slopes of 2 to 1 are necessary on account of 
the sandy soil that will be encountered. 
Ditch No. 19. — A solid waste bank, to prevent overflow, is neces- 
sary at the following points along ditch No. 19 : On the east side where 
the ditch crosses Wells Bayou in sec. 7, T. 10 S., R. 3 W. ; on the west 
side at both crossings of Dry Bayou in sec. 31, T. 10 S., R. 3 W. ; and 
on the west side at Coon Bayou in sec. 6, T. 11 S., R. 3 W. An earth 
dam, estimated to cost $1,000, is planned to be constructed across 
Coon Bayou in the northeast part of sec. 18, T. 11 S., R. 3 W., to 
prevent high water in ditch No. 19 from flowing to the east. This 
dam should be constructed with a small sluice gate in order that Coon 
Bayou may be drained during low water. On account of the sandy 
soil the side slopes are made 2 to 1 from station 765 (in sec. 19, T. 10 
S .,R. 3 W.) to station 895 (in sec, 6, T. 11 S., R. 3 W.), and from sta- 
tion 1003 to station 1014 (in sec. 18, T. 11 S., R. 3 W.). The section 
from station 765 to station 895, where the average depth of cut is 
about 14 feet and the maximum cut is 21.5 feet (on the bank of Amos 
Bayou), is estimated at 9 cents per cubic yard. All other excava- 
tion on this ditch is estimated at 8 cents. From station 949 to sta- 
tion 1003 (in sec. 7, T. 11 S., R. 3 W.) the ditch follows the channel of 
Coon Bayou and no excavation is required. The section from station 
949 to station 976 must be cleared and grubbed. This work is estimated 
at $3,000 per mile. From station 976 to station 1003 the only improve- 
ment needed is clearing at an estimated cost of $2,000 per mile. 
The excavation work in ditch No. 19 ends in Bayou Macon on the 
south line of sec. 28, T. 11 S., R. 3 W. From this point to Macon 
