Does anyone smell rotten eggs?
The U.S. Army Corps of Engineers said conditions at Leesville Lake in Carroll County could result in the presence and possible release of hydrogen sulfide gases.
The conditions were discovered in the outlet works area, the agency said June 16. The problem is normally contained to the area adjacent to the outlet works.
The gases are not known to pose a problem to recreational users of the lakes, and there is no indication that fish taken from the lakes pose a health risk if consumed.
The area immediately adjacent to the discharge at Leesville Lake has been closed for public safety and will remain closed until the problem naturally corrects itself, the Army Corps of Engineers said.
The agency is continuing to monitor the area and will announce additional closures if hydrogen sulfide reaches levels that could pose a health risk to the public.
How does hydrogen sulfide form in the lake?
Hydrogen sulfide forms when the concentrations of sulfates in the watershed are higher than normal.
During the summer months, the sulfates are converted to hydrogen sulfide gas through microbial activity occurring in the bottom layers of the lake.
As the water leaves the lake, the hydrogen sulfide gas is released into the air, creating an unhealthy situation in the tailwater areas.
What are the potential health risks?
Hydrogen sulfide is a colorless gas recognized by its characteristic rotten egg odor.
Symptoms vary depending on the level and duration of exposure. Low concentrations irritate the eyes, nose, throat and respiratory system.
Exposure to moderate concentrations can also cause fatigue, dizziness, nausea and headaches.
High-risk groups include asthmatics and young children.
This article originally appeared on The Repository: Smell rotten eggs? Area at Leesville Lake closed due to hydrogen sulfide gas concerns
Reporting by Grace Springer, Canton Repository / The Repository
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