TVA Marine Biologists Survey Fish Populations in Douglas Lake Post-Hurricane
Marine biologists from the Tennessee Valley Authority (TVA) have commenced a survey of fish populations in Douglas Lake, Dandridge, Tennessee, marking the first assessment since Hurricane Helene’s debris impacted East Tennessee waterways seven months ago. The research aims to understand how the excessive debris may have affected the sport fish population, with findings set to be compared against data collected over the past 30 years. Indicators such as reduced fish numbers or the presence of deformities and parasites could signal problems as the spawning season approaches.
The biologists utilized a shocking technique to temporarily immobilize fish within a four-foot radius of their research vessel. The fish were then examined for defects, measured, weighed, and promptly released back into the lake. TVA Fisheries and Aquatic Monitoring Manager Lyn Williams expressed optimism about preliminary results, stating that observations seem to indicate fish populations are "within normal range," though comprehensive data analysis is still pending.
The impact of underwater debris on fish habitats is significant, as it provides essential areas for spawning, feeding, and hunting. TVA Fisheries Biologist Kevin Parr noted that habitat disruptions may alter fish congregations, urging that while fish might relocate, they remain in the lake.
Sport fishing is a major economic driver for Jefferson County, accounting for approximately 80% of local tourism revenue, which adds up to hundreds of thousands of dollars annually. However, fishing tournaments initially set for Douglas Lake post-Hurricane Helene had to be rescheduled, affecting last year’s income as cleanup efforts are now about 90% complete. The Tennessee Emergency Management Agency reports that over 3.7 million cubic yards of debris have been cleared from Tennessee waterways, showcasing ongoing recovery efforts in the region.
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