AGRICULTURE
- Removal of invasive plant species
- Increase holding capacity
- Prevent flooding by reducing runoff
- Reduce erosion
- Reuse removed sediment
OVERVIEW
The body of the water had not been cleaned since it first went into service. The collection of silt and sediment, added to the, decreased the water depth from (4.6 m) to as little as (1.5 m) in some areas.
There are many instances where dams, lagoon can no longer maintain the level of capacity required. According to regulations, the flat-floored basin must be capable of retaining all of the runoff during the heaviest rainstorms recorded over a given period of time.
Once a dam/lagoon is 20 percent filled with solids, that this capacity no longer exists. Most dams/ponds/lagoons are past this level in Southern Africa.