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Flood Protection Information


Flooding in The City of Lewisville occurs primarily around the creeks that run through the city to the Elm Fork of the Trinity River. The river's water level is controlled by the Army Corps of Engineers through the Lake Lewisville Dam. Unless there is a severe flooding event, the lake and river will remain in their banks. Even if the lake and river are well within their banks, smaller creeks can flood with heavy rains. The main creeks affecting Lewisville are Timber Creek, Prairie Creek and Denton Creek on the west side of the city and Midway Branch and Indian Creek on the east side. In addition, all of these creeks have smaller tributaries subject to flooding. The Timber Creek Acres subdivision, located along Timber Creek, has had many flooding problems over the years. Owners with property near one of these flooding sources whether in the 100-year floodplain or not, should take precautions from flooding. Even if property has not flooded previously or recently it can still be flooded in the future due to changes in weather patterns and stream characteristics or a rain event that exceeds a 100-year storm. A 100-year storm does not mean that it will only occur only once each 100 years, but that there is a 1% chance in any given year that a storm that large will occur.

Flood hazards are mapped by the Federal Emergency Management Agency. The Flood Insurance Rate Maps (FIRM's) for the City of Lewisville along with other publications on flood protection and local flood studies can be found in the Engineering Department, located on the second floor of City Hall, 151 W. Church Street. You can visit the Engineering offices or call 972.219.3490 for information with regard to any questions you have about the flood hazard for your property and if requested, the engineering staff will visit your property to review flood problems and explain what can be done to improve the drainage for your property and neighborhood.

Emergency Preparedness and Emergency Warning
Flood Insurance
Flood Safety
Property Protection - Home Improvements
Drainage System Maintenance and Protection
Natural and Beneficial Functions of Flood Plains