The Brushy Creek Water Control and Improvement District and Round Rock City Council have entered an agreement for the construction and upkeep of Dam 101 following a vote taken by the council Sept. 9.

Also included in the agreement is permitting and land acquisition, easement, operation and maintenance. The city and BCWCID previously entered into an interlocal agreement in 2018 for the design and construction of the dam, which would impede the flow of floodwaters in the Lake Creek Basin area, according to the city's meeting packet.

As part of the agreement, the city will be responsible for 10% of the total project cost, no more than $3.4 million. All previous financial commitments by the city for the project, such as engineering and design costs, will be credited in that amount as well as city staff time. The city will also commit to longtime stewardship as required by the U.S. Army Corps of Engineers in order to preserve the stream and wetland mitigation site and provide water for the dam's construction at no cost to the BCWCID. Construction is expected to begin in the third quarter of 2022.

The city will not be responsible for construction costs not listed in this agreement, according to city documents.

The BCWCID website states that Dam 101, along with Dam 102 and 620 Quarry modifications, will "substantially reduce flooding in the largest damage center in Williamson County." The property where the dam will be lies in a 100-year flood plain. It is in Round Rock West, near Sunrise Rd. and E. Old Settlers Blvd.