Diablo East is a concrete double-lane boat ramp (10 feet wide, extending 15 feet deep) at Amistad Reservoir and one of the busiest ramps in the recreation area, popular for fishing tournaments.

The ramp accommodates various boat sizes and is suitable for motorized boats, kayaks, and canoes; an automated fee machine is on-site for lake use passes.

Amenities include parking, picnic tables, and wheelchair accessibility, though availability of facilities may vary with current lake levels.