Catchment planning is an important tool for integrated water resources management (IWRM) and for management of related land and natural resources. Catchment management is based on hydrological boundaries, i.e. water flows, and a catchment is an area of land where precipitation falls, collects and drains off into a single common point, such as a river, lake, or other body of water. A catchment includes all surface water emanating from rainfall-runoff within these boundaries and that runs downhill towards the shared outlet. It also includes those groundwater bodies that are wholly or partly within the same area, especially those that contribute to surface water flow. Catchments also contain people and businesses, such as industry, agriculture, etc., and these are all also affected by and have an impact on water resources within the catchment area. The strong relationships between land, water, people (stakeholders) and the economy within a catchment, call for an integrated management thereof.