Dam Repairs to Cause Temporary Closure of Park Trail
As construction begins on Lake Accotink Park’s dam, a portion of the 3.8-mile loop trail will be temporarily closed at the fair-weather crossing at trail marker three (right in front of the dam) to thru traffic for several days up to three times between late-August and December.
To lessen the impact on visitors to the park, the trail will remain open on Fridays and weekends. The exact dates of the trail closures will be posted on signs along the trail.
The dam, built in 1943, features a concrete spillway measuring approximately 360 feet long and 22 feet tall. Forty percent of the dam spillway face will be repaired where cracks have formed in the concrete surface. The wooden flashboards along the top of the dam, added to increase the depth of the lake, will also be replaced. Existing riprap (large stones used to prevent erosion) will be replaced and a gravel drainage feature will be installed to help move percolating water away from the earthen embankment’s base.
Dam repairs require that the water level be lowered for an extended period of time which will cause exposure to the deep silt of the lake’s bottom. Patrons are advised to stay out of the silt/mud beds, just as they are advised to stay out of the water. A new water monitoring system will track the amount of water flowing through the dam. Finally, about 200 feet of new concrete trail will be built.
The project is expected to be completed by March 2010.