Bui. 852, U. S. Dept. of Agriculture. 



Plate IX. 



Fig. I. — Rondout Tunnel, Catskill Aqueduct. 



Typical pressure tunnel construction, showing completed excavation and partial and completed 



concrete lining. 



Fig. 2. — Cut-and-Cover Section of Catskill Aqueduct, Peekskill Division. 



Interior of finished conduit on curve of 3,000 feet radius. 



