LAND DRAINAGE BY MEANS OP PUMPS. 



15 



and levee were completed, but these differ from the previous con- 

 struction by being so located as to include a settling reservoir oppo- 

 site the mouth of each stream. These reservoirs receive the sand 

 and sediment brought down from the hills, and thus prevent the 

 ditch from becoming clogged. The reservoirs were planned to be of 



LEGEND 

 Drainage Ditches 

 Tile Drams 

 Lesee 

 Railroad 

 Roads 



BEARD STOWN 



Fig. 1. — Maj) of Coal frock Levee and Drainage District, Illinois. 



such size that they would not become filled with sediment for many 

 years. Two of them arc, respectively, 5 and 20 acres in extent, 

 while two are of 6 acres each, and three arc of 4 acres each. Figure 2 

 of Plate IV is a view looking west-northwest across Hood Basin, 

 the largest of the reservoiis. Across the basin may be seen a part 

 of the embankment of the original diversion ditch which failed. The 



