as you know in dam operation we should prevent from reduce of water volume until a critical value because of water quality and structural problems. my question is that how this critical value is determined?
Chaves, P., Kojiri, T. and Yamashiki, Y. (2003), Optimization of storage reservoir considering water quantity and quality. Hydrol. Process., 17: 2769–2793. doi:10.1002/hyp.1433