Laporan Penyelidikan Geologi Teknik dan Finalisasi Desain Waduk Sadawarna, 2011, menyebutkan bahwa di dasar Sungai Cipunagara diendapkan campuran antara Boulder/bongkah,
Report of the geological survey techniques and Design Finalization Reservoir Sadawarna, 2011, mentioned that at the base of the river Cipunagara precipitated a mix between Boulder/bongkah,
The investigation report of Engineering Geology and Reservoir Sadawarna Finalize Design, 2011, states that at the bottom of the river deposited Cipunagara mix between Boulder / boulders