276 



ENGINEERING ON THE FARM 



outlet or main channel by which the water may be carried 

 away must be given early consideration. In some places 

 nature has provided such outlets; in others it is necessary 

 for several landowners to band together and construct a 

 channel of sufficient size and depth to serve as the main 



After University of Minnesota 



Fig. 225. Outlet channel constructed by steam dredge 



outlet of a network of ditches which will give relief during 

 wet years. On the individual farm it is necessary to have 

 a thorough system of collecting the water as it falls and 

 of carrying it to the main outlet. 



Outlet. Drainage organizations often assess costs and 

 give out statistics showing the cost per acre of drainage 

 systems, giving the impression that complete drainage has 

 been installed. In many instances the work actually done 

 has been to furnish outlets only, and often those are inade- 

 quate, owing to the fact tnat tracts of lands are separated 

 from the outlet channels by lands belonging to other owners. 

 Such drainage systems do not furnish the proper relief for 

 farm drainage. The drainage district, properly organized, 

 should furnish, to each tract of land in separate ownership 



