How Robinsong applied Rosgen's Natural Channel Design Techniques to help shape a community's future In 2000, the Madison County Executive Airport Authority faced a problem that threatened its growth. The FAA-mandated Runway Safety Area was encumbered by a gravel mine which had operated through most of the last century. The mine’s gravel pits, at the north end of the new runway, could not be filled because the Brier Fork of the Flint River had been diverted to run through the mining area. The airport authority and the civil engineering firm of G. W. Jones & Sons (whose firm provided project management) called upon Robinsong for its wetland and stream restoration experience. In the end, this partnership would create a solution in which Robinsong’s knowledge of Rosgen’s Natural Channel Design Techniques would play a key role.