Complex sentence: The South and East borders adjoin the Klong Kathun reservoir of the Royal Irrigation Department of Thailand (Ang Keb Num Klong Kathun) and the West border with Chawang District and Wiang-Sra District in Suratthani Province.
Split into simpler sentences: The South and East borders adjoin the Klong Kathun reservoir of the Royal Irrigation Department of Thailand (Ang Keb Num Klong Kathun). The West border with Chawang District and Wiang-Sra District in Suratthani Province.