Preventing flooding at the Campus of North China Electric Power University Beijing. This prestigious university of technology houses approximately 20,000 students. The main campus in the Changping District, covers an area of 1600 hectares. In this buffering- and infiltration project Hydrorock is successfully used to prevent flooding of the campus. The rainwater collected in the Hydrorock infiltration blocks is also used to stimulate the growth of plants and lawns in a natural way.