---

Austin Expands Erosion Protections Along the Colorado River

For decades, erosion has threatened infrastructure and landscapes along the Colorado River in East Austin, but a new ordinance aims to change that. On March 27, the Austin City Council voted to expand erosion protections, doubling the required erosion hazard zone analysis area from 100 to 200 feet along the shoreline downstream of Longhorn Dam.

The move is a proactive step toward preventing destructive erosion issues in an area known for its sandy, highly erosive soil. With extreme weather events increasing due to climate change, officials say these safeguards will help mitigate future damage.

Under the revised ordinance, certain development and infrastructure projects within the newly expanded erosion hazard zone must conduct an analysis to assess risks before building. Depending on the results, protective measures may be required to reinforce the landscape. However, the requirement does not apply to single-family home permits, ensuring individual homeowners are not burdened by additional regulations.

Officials highlight the costly challenges of managing erosion in dynamic riverine systems like the Colorado River. Over the years, Austin has invested in repairing and replacing erosion-damaged infrastructure, including:

• The pedestrian bridge in Roy G. Guerrero Metropolitan River Park
• Fallwell Lane
• Storm drain outfalls at Tillery and Canterbury Streets

“This ordinance furthers the City of Austin’s goals to become more resilient in the face of ever-worsening climate disasters,” said Jorge Morales, Director of the Watershed Protection Department. “Prevention is always preferable to rebuilding after a disaster.”

Alongside the expanded erosion protections, the new ordinance also clarifies regulations for erosion hazard zones across the city. It states that analyses are not required for non-habitable structures such as sheds or fences, and erosion hazard zones will not extend beyond public roadways running parallel to a waterway.

The expansion is part of Austin’s larger effort to safeguard its waterways and infrastructure, while balancing responsible development. Officials encourage residents and developers to review the interactive map outlining the new erosion hazard zone at AustinTexas.gov/RiverProtections.

With stronger regulations in place, Austin aims to preserve its riverfront and ensure its natural landscapes remain intact for generations to come.