NRCS-MA Tyler Dam Rehabilitation Project Floodwater Retarding Dam

The work consists of rehabilitating the existing dam to be in compliance with current safety and performance standards. Engineering studies identified that the dam has inadequate auxiliary spillway capacity that would result in overtopping and breaching of the embankment during the probable maximum

flood. The major items of work include: excavating the approach channel upstream of the auxiliary spillway drop structure by 2.5 feet to improve flow efficiency; installing a geosynthetic clay liner in the auxiliary spillway approach; rais