According Sugandhy (1999) in Anna S., 2001, when linked to spatial planning, the allocation of space in order to maintain and fulfill the presence of water, water catchment area, the security area of surface water sources, springs securing the area, then at least 30% of area should be sought cover their tree stands can be protected forests, production forests or crops, forests and other travel.
Therefore, for the maintenance of the natural balance and the water cycle, the upstream forest vegetation becomes very important. The part of the other, where the upstream areas are very dominantly influenced by the pattern – the pattern of land use (the specific local land uses) which relates to the behavior of society, so that the public interest should also be included as a key factor in the upstream land management policies.
Allocation of resources is very closely related to planning the use of space, so the spatial planning, which either means efficient allocation of land resources to optimize land use interests. In accordance with its position DAS is the liaison between the upstream area of land in the coastal area. The river is an important component of a watershed that has potential benefits (as a source of raw water) at the same time able to cause flooding, sedimentation and other waste carrier.
Because it is flowing from upstream to downstream, the impact of an activity in the upstream will also be felt in the downstream, so it can be concluded that there huluhilir ecological relevance of a watershed. Watershed Management usually depart from one side on how to use and benefit from the watershed, but in this case it must be remembered that if there is a significant profit no loss, therefore the management aspects should be seen in both aspects.
Aspects of the management itself should have three criteria, namely the use, preservation and control. Utilization aspects on how to use and benefit from their water resources without thinking of the loss that would be incurred. While conservation aspects to do in order to be sustainable utilization aspects that need conservation efforts both in terms of quantity and in terms of quality.
Keeping catchment area upstream and downstream areas is one of management activities, so that the difference in the discharge during the dry season and the rainy season is not too big. And the last is the control aspects in which we realize that the benefits of water resources in addition to the carrier also has a physically and chemically damaged. Body of water in this river usually become a dumping ground unused goods as well as a container for the end result of soil erosion that may result in sedimentation as well as result in the occurrence of floods.
Watershed Management must see that there is a third aspect, because if one aspect abolished it will result in lack of sustainability in the use of it can even be bad. If we can not manage Watershed properly and correctly then we will accept the result even for generations to come. Major goals and objectives of the system of watershed management is to maximize socio-economic benefits of all land-use activities in the watershed.