What Is A Floodplain?

What Is A Floodplain?
A floodplain or flood prone area is any land that is susceptible to be inundated by water from any source.Floodplains can be associated with rivers, lakes, streams, channels, or even small creeks that are normally dry most of the year.

Base Flood or 100 year flood is a flood that has a 1% chance of being equaled or exceeded in any given year.
Federal Emergency Management Agency
The Federal Emergency Management Agency (FEMA) provides more information on floodplains and floodplain management.

Floodplain Regulations
Floodplain regulations are enforced to protect public safety and health. In addition, they encourage sound engineering practices and efficient floodplain management techniques. Floodplain management regulations means zoning ordinances, subdivision regulations, building codes, health regulations, special purpose ordinances (such as floodplain ordinances, grading/filling ordinances, and erosion control ordinances). This term describes such state or local regulations, in any combination thereof, which provide stand ards for the purpose of flood damage and prevention. 

All construction in the City of Marble Falls must adhere to the adopted Code of Ordinances regarding floodplain construction. The Floodplain Manager is responsible for examining construction for compliance with local and federal floodplain regulations.

Evaluating and Permitting Floodplains
The City of Marble Falls follows the Federal Emergency Management Agency’s guidelines for Floodplain permitting and the city’s adopted Floodplain regulation ordinance.Permitting within the floodplain does typically require more detailed design and construction documents to ensure the proposed structure will conform to the adopted stand ards for the flood zone where the structure is proposed to be built or modified. 

Before a floodplain permit can be issued, construction documents/plans must be submitted to Development Services for review. Floodplain permitting within the City of Marble Falls is conducted through the Development Services Department. For more information in regard to Floodplain permitting, please contact the Development Services Department by calling 830-798-7095.

Floodplain Mapping

Flooding is a potential costly hazard in the City of Marble Falls, consequently, the first step in flood protection is to know your flood risk. Flood risks vary from property to property, even in the same neighborhood and risks can change over time due to erosion, new construction and other factors.

Planners, local officials, engineers and builders can use the maps to determine where and how to build new structures and developments. Residents and businesses can use the maps to learn their risk, and decide the financial steps needed to protect against damage and loss.

Visit our GIS and Mapping division for more information on floodplain mapping.