Little Elm, TX Environmental Rules: Erosion Control (2026)

Erosion and sediment control in Little Elm is regulated through the town Stormwater Management Program adopted under Ordinance 1087 and TCEQ Small MS4 general permit requirements. All construction sites disturbing one acre or more of land must file a Notice of Intent (NOI) with TCEQ and develop a Stormwater Pollution Prevention Plan (SWP3) that details specific erosion and sediment control best management practices. Required controls typically include perimeter silt fencing, storm drain inlet protection, stabilized construction entrances to prevent tracking of mud onto public streets, sediment basins or traps for larger sites, and temporary seeding or mulching of disturbed areas not under active construction. The SWP3 must be kept on site and available for inspection. Controls must be inspected and maintained after each rainfall event of 0.5 inches or greater. Upon project completion, permanent stabilization must be achieved through final grading, topsoil, vegetation, or permanent erosion control measures before the Notice of Termination is filed with TCEQ. Residential lot development is also subject to erosion controls during home construction to prevent sediment from reaching streets, drainage channels, and ultimately Lewisville Lake.