Lake Naivasha - The Vetiver Network International

Flood-plain erosion control• In the wet season water from the Malewa and Gilgil rivers floodthe “delta” area in the north eastern part Lake Naivasha. This isflat land. The Malewa has a defined river course, but the Gilgilis less well defined.• One solution would be to establish Vetiver hedgerows acrossthe delta area at about 100 m intervals. If the the hedgerowlines were first established with a bulldozer to flatten the line andthen planted (possible by machine) with Vetiver, very effectivebarriers could be established. Wildlife could move through thehedge rows but would not destroy them. Considerable siltdeposits could be expected behind the hedgerows.• This is demonstrated through the following slides of Vetiverhedges on the black soils of the Queensland’s Darling Downsthat can be subjected to major flooding