Some say this lake season has been the toughest on area business.
"I've been here about 14 years, and this is probably about one of the hardest years we've had in the 14 years to keep things going... keep the business going like it should be," said Narrows Marina Manager Wayne Shelton.
Businesses began the season battling high water due to rain.
"The beach has been close the last four seasons due to varying lake levels, and we are actually looking at re-purposing that area for next season," said Barren River Lake State Resort Park Manager Lisa Davis.
They're finishing the season with the HAB Caution after the US Army Corps of Engineers discovered some indication of toxins released by a blue green algae bloom.
"What it's doing is, it's running away our tourists, and I've talked to some local businesses here, grocery stores and things, and we seem to be off about 30 percent, and as of today, there's no boats on the lake," said Shelton.
"Our normal occupancy for the campgrounds would be around 60 or 65 percent, and it's dropped to the forty percentile range," said Davis
Shelton says he hasn't had a single complaint of illness yet.
"The locals here are still using the water just like they always have. We have house boaters and pontoon boaters that have boats in the slips here, they're going out every weekend, using it every weekend, and we have not had one person come in and say hey, a doctor has said we've gotten sick over an algae bloom," said Shelton.
Both say while activity at the lake is down, some still test the waters. Davis says Barren River Lake State Resort Park says its campgrounds, which make up a fourth of its business, have seen between a 20 and 30 percent drop in traffic and revenue, while Shelton says his sales are down about thirty percent.