Page - 403 - in Book of Full Papers - Symposium Hydro Engineering

Unit : 2 Surgetank type : Surgetank Dimension (ᶲ x L) : 20x28 (m) Penstock : Steel Unit : 1 Lenght : 300 Dimension (ᶲ) : 6.2 Head : 55.6 Effective head : 50 Tailrace : Open Channel Figure 2. Regulating Dam HEPP Poso-I Lay out Figure 3. Dam Cross sections and spillway long section 3.4. Reservoir Operation Rule a) Poso Lake Water Level Poso lake water level elevation Data varies from 509.3 m to 512.6 m. Higher elevation is assumed to be very high (flood / flood) and low (dry). To set up the lake, the water will be collected when the water level below the elevation of 511.70 m. When the water level above the elevation of 511.70 m it will be spill out through the gates of the natural capacity of the lake outlet, the highest elevation lakes will follow natural behavior. Because of this, the water level in the lake will not be lower than the existing high data so won’t cause environmental impacts. While Minimum Operation Level (MOL) on the dam is setted at elevation of 507 m. 403