Amon Carter’s water clarity is moderate with water fluctuation also moderate. Two lakes make up Lake Amon G. Carter, the original lake constructed in 1956 and a 500-acre extension added in 1985. One lake, but two different habitats. Rocky shorelines, main lake points, cattail beds and some standing timber describes the upper end. The new lake has standing timber and some weed beds. Rip-rap on both dams provide good fishing. The two lakes are joined by a 20-foot tunnel.