Att14_SeepageAnalysis_0005.pdf

This document is Appendix A of a Geotechnical Report prepared by Dowl, containing seepage analysis for Melstone Dam.

The appendix presents two detailed seepage analysis diagrams for the dam using SEEP/W software. The first diagram illustrates steady-state seepage conditions under normal pool elevation of 2,863.4 feet, employing the Steady-State method. The second diagram depicts rapid drawdown seepage conditions under a drawdown pool elevation of 2,967.5 feet, using the Transient method. Both analyses are presented in U.S. Customary Units and dated January 6, 2025. The diagrams display cross-sectional profiles of the dam showing water total head measurements in feet, distance measurements, and elevation changes. Color-coded zones in the diagrams represent different seepage gradients and flow patterns through the dam structure, with equipotential lines and flow paths clearly marked. The analyses appear to evaluate the dam's performance under different water level scenarios to assess potential seepage rates and phreatic surface locations within the embankment.