The Austin City Council has voted to enforce stronger erosion protections along the Colorado River in East Austin. The decision, made on March 27, aims to address new and growing erosion concerns in an area known for its vulnerability to such issues.
Under the newly passed ordinance, the requirement for an erosion hazard zone analysis has been broadened. This expansion increases the covered area from 100 to 200 feet along the riverbank downstream of Longhorn Dam. Particular developments and infrastructural projects will now need to conduct such an analysis, potentially prompting the implementation of erosion preventative measures based on outcomes. However, the ordinance exempts building permits for single-family homes from this requirement.
The soils in this region are characterized by their sandy and erosive nature, presenting challenges and high costs for addressing erosion. Among the city's completed projects are infrastructure repairs due to erosion, such as the pedestrian bridge in Roy G. Guerrero Metropolitan River Park, Fallwell Lane, and the storm drain outfalls at Tillery and Canterbury Streets.
According to Jorge Morales, Director of the Watershed Protection Department, “This ordinance furthers City of Austin goals to become more resilient in the face of ever worsening climate disasters. Prevention is always preferable to rebuilding after a disaster.”
Alongside the expansion of the erosion hazard zone in this area, the ordinance provides further clarification for all erosion hazard zones throughout the city. It outlines that an analysis is not necessary for non-habitable structures, such as sheds or fences, and sets limits so that erosion hazard zones do not extend past public roads running parallel to waterways.
For more details and an interactive map of the expanded erosion protection zone, residents and interested parties can visit AustinTexas.gov/RiverProtections.
The Watershed Protection Department in the City of Austin is tasked with safeguarding lives, properties, and the environment by mitigating the effects of flooding, erosion, and water pollution. Further information about their efforts can be accessed at AustinTexas.gov/Watershed.