Lake Austin battles hydrilla invasion


Posted: Tue, 16 Sep 2025 04:15 PM - 2 Readers

By: Rudy Koski - Fox 7 News Austin


Lake Austin, a popular recreational spot in Central Texas, is grappling with a growing infestation of hydrilla, an invasive aquatic plant that threatens the lake’s ecosystem and usability. First detected in 1999, hydrilla has spread rapidly in recent years, forming dense mats that choke waterways, harm native plants, and disrupt activities like boating and fishing. The Texas Parks and Wildlife Department (TPWD) has been working with local partners, including the City of Austin, to manage the problem through measures like deploying grass carp to eat the plant and applying herbicides. However, these efforts have not fully contained the spread, prompting concerns from residents and lake users who have noticed a significant increase in hydrilla since 2023.

The battle against hydrilla is complicated by its resilience and ability to thrive in Lake Austin’s clear, nutrient-rich waters. TPWD is exploring long-term solutions, such as adjusting water flow from Lake Travis to disrupt hydrilla growth, but these plans face challenges like drought and limited water availability. Local stakeholders, including the Lower Colorado River Authority, emphasize the importance of community involvement, urging boaters to clean their equipment to prevent further spread. While officials remain optimistic about controlling hydrilla, they acknowledge that eradication is unlikely, and ongoing management will be critical to preserving Lake Austin’s ecological and recreational value.



Read Full Story at: Rudy Koski - Fox 7 News Austin

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