"Effective immediately, all Hydro Tasmania lakes and boat ramps are closed to help prevent the spread of COVID-19, along with our campgrounds," Hydro said on its Facebook page on Monday.

"It's a difficult but simple message; if you were planning on fishing, water skiing, camping, hunting or otherwise visiting Hydro Tasmania lakes or land for the Easter break or beyond, you must stay home.

"Even if you're travelling alone, there are always risks.

"Please help us by following the government's advice to stay home and stay safe, so we can all throw a line in when life returns to normal."

The reaction was mixed on Facebook, including support, opposition and resignation.

"Are you serious!!!" a Georgie Dewing wrote.

"What a crock.

"You are a hundred times more likely to catch corona from a supermarket than going fishing or camping in these areas.

"I totally understand isolating and slowing the curve, but I do not get the logic of this at all."

Hydro replied that it was completely serious.

"I'm sure you've seen just how crowded some of these areas can be, especially at Easter time," it said.

"But it's also about eliminating the risks of unnecessary travel to and from these locations.

"Parks and Wildlife and various councils are taking the same steps in these difficult times, and we urge you to please listen to the advice of the experts and stay home."

Shooters, Fishers and Farmers Tasmania spokesperson Rebecca Byfield was supportive of Hydro's move, but concerned about the Tasmanians whose diets relied significantly on catching fish.

She said that would be more of an issue with many Tasmanians having lost their jobs because of the virus response.

Ms Byfield was not surprised by Hydro's move and saw it as consistent with decisions by the state government and agencies shutting access to areas because of the virus.

She said she understood people's concerns about the move, but "I completely support what the government is doing and we all need to do our part."

" ... we stay home, we do our part, we don't go out."