<P> The Addicks Reservoir spillway is located at, 29 ° 47 ′ 26" N 95 ° 37 ′ 24" W ﻿ / ﻿ 29.79056 ° N 95.62333 ° W ﻿ / 29.79056; - 95.62333, and releases the remainder of Bear Creek just north of Buffalo Bayou . </P> <P> Addicks Reservoir and Dam get their name from the former town of Addicks, TX . </P> <P> Addicks Reservoir is formed by a rolled earthen dam 61,666 feet (18,796 m) long and above the streambed . A 12 - foot - wide (3.7 m) gravel road extends along the top of the dam . The top of the dam has a maximum elevation of 121 feet (37 m) above the NAVD 1988 and is almost 50 feet high in points . The maximum storage capacity of the reservoir is 201,000 acre feet (248,000,000 cubic metres; 248 gigalitres), The record high water level for the reservoir prior to Hurricane Harvey was 123,100 acre feet (151,800,000 m; 151.8 GL), set on April 24, 2016 . </P> <P> During Hurricane Harvey, the level peaked at 109.1 feet on August 30, 2017; this is the highest recorded level for Addicks Reservoir . Water retention at this level was 217,500 acre feet . Combined with the adjacent Barker Reservoir to the southwest, the total storage capacity is about 410,000 acre feet (510,000,000 m; 510 GL). </P>

When were the addicks and barker reservoirs built