![](/hydroplus/minisites.nsf/A844DE25C6BCC6BCC1257C6300510967/$FILE/Black Rock_opt.jpg) |
This 24-m-high embankment dam is officially recognized as an historic monument.
Using a fusegate spillway for low-flood performance and a free-sill auxiliary spillway for extreme flood management has increased the discharge capacity by 1080%, while keeping the environmental impact of the upgrade to a minimum.
This project was awarded the title of "2002 National Rehabilitation Project of the Year” by the U.S. Association of State Dam Safety Officials.