“This is a dead-end concrete road that runs north from Clay Road.
— Bryan Dotson
This concrete trail is the top of the Addicks Dam spillway. Though the most common spillway type is located at the lower outflow of a dam, this spillway is at the end of this rolled-earth dam, to be used if the reservoir fills completely. This (and a similar one on the west end) is the "relief valve" to prevent erosional damage to the dam. The top of the concrete is at 112.5 feet (NAVD 1988) and the abutment (undisturbed ground) at the north end is at 108 feet. During Hurricane Harvey in August 2017, the reservoir level peaked at 109.1 feet.
The entrance to the trail is at the top of the dam at Clay Road. Parking is not allowed at the entrance, and the closed gates prohibit motor vehicle entrance.
The trail currently dead-ends about 1000' from Tanner. Please do not trespass on the private property to reach Tanner Road. There is a project underway by Harris County Parks to connect the north end to Tanner Road. As of October 2017, the land acquisition is complete and the next milestone is the Corps of Engineers' permit. There are a number of "deer paths" that link to this trail from the east.
Wildlife frequently encountered include deer, coyote, and hawks.