The document discusses methods for analyzing high volume stormwater events using low impact development (LID) techniques compared to traditional detention basins. It describes a case study methodology using a 200 acre site to model pre-development conditions and post-development scenarios with traditional detention and LID controls. The results show LID techniques like flow-through planters and dispersion can control peak flows as well as traditional detention but use less land and provide better water quality benefits. LID is concluded to provide meaningful flood control and quantifiable benefits for development projects.