These sandstones and siltstones were crushed and compacted to form the dam embankment. The embankment also contains approximately  of processed basalt. This material was incorporated into various filters and drains within the embankment to cope with seepage within the embankment and foundations.
These sandstones and siltstones were crushed and compacted to form the dam embankment. The embankment also includes about of processed basalt. This material was integrated into various filters and drains within the embankment to manage seepage within the embankment and foundations.