The area of reservoir is the area stated by primary function to protect the eternality of
environment. One of the reservoirs area of which gives protection towards its subordinate area is
reservoir area outside the forest area. The reservoir outside forest area is mostly functioned as
agricultural land of tobacco. Tobacco agriculture of Temanggung Regency is the reliance of
economy towards the society of Temanggung Regency, and as the income source towards the
Regional Development. The existed problem is how to control environmental destruction and the
barriers faced in the execution of controlling. In this research, it used empirical legal research,
i.e. a research focused on the behavior of legal society. The methods of data collection were
interview, questionnaire, literary study and observation. Meanwhile the result gained from this
research is the existence of environmental destruction in reservoir area of Gunung Sumbing
slope of which is caused by the existence of tobacco agriculture that does not consider on the
policy direction of Regional Government. The conclusion of this research is the controlling has
not included entirely, by reason of the barriers of unfulfilled fund on the controlling activity. The
suggestion can be conveyed by the author is in order the execution of destruction controlling is
keep executed appropriately to the Regional Mid-Term Development Plan of Temanggung
Regency.