FLO-2D

The FLO-2D model was conceptualized in 1986 to predict mudflow hydraulics.  The US Federal Emergency Management Agency (FEMA) supported the initial model development and first application to Telluride, Colorado in 1988.  Over the past 28 years, FLO-2D has become the most widely used commercially available flood model.  What sets FLO-2D apart from other hydrologic and hydraulic models is its capability to simulate urban flooding in high resolution and unlimited detail including the storm drain system.  Using elements as small as 10 ft (3 m), FLO-2D is a superior model in terms of volume conservation, speed, numerical stability and detail. FLO-2D is simple to setup and even simpler to edit (no mesh regeneration).