The Local Flood Hazard Flooding in Highland Village mostly comes from Lake Lewisville and several small tributaries, the principal ones being:
The creek that runs east of Highland Forest between Oak Forest and Winding Creek Drive
The creek that follows the eastern side of the City limits and empties into Lake Lewisville and Copperas Branch Park.
Even though flash flood events in North Texas are most common during the months of May and June, the potential for flooding is present throughout the year and can affect nearly every person in Highland Village.
Heavy rains in spring of 2015 caused Lake Lewisville to crest above the 1% annual chance flood stage (100-yr mark). This event caused roads to close, and brought flood waters right up to doorsteps of many homes surrounding the lake. This event illustrated the City’s commitment to flood safety with ordinance 2011-1100. This ordinance states that no development will occur in the FEMA designated Special Flood Hazard Area and that all development near that zone will be raised a minimum of 2 feet above that flood elevation.
In conjunction but sometimes differing in location; with that FEMA flood zone is the Army Corp of Engineer’s flowage easement. All properties that touch the shoreline of Lake Lewisville have a flowage easement that permits the Army Corps of Engineers to allow waters to rise to the elevation of 537 feet above sea level. Please see info sheet concerning the permitted uses in that easement. All changes made in that easement must be permitted and approved by the Army Corp of Engineers permitting department.