National Environmental (Upper Kotmale Hydro-Power Project- Monitoring) Regulation No. 1 of 2003. Gazette Notification Number 1283/19 dated 10th April 2003
Order under Sections 24(C) and 24(D) to declare Maragala Mountain Range as an Environmental Protection Area. Gazette Notification Number 1560/26 dated 1st August 2008.