A section of Lake Hopatcong has reopened for watersports and training by the Department of Environmental Protection after a harmful algae bloom.

Indian Harbor has been cleared while all beach areas remain closed.

For the past month, harmful algae blooms have plagued Lake Hopatcong and several other lakes in New Jersey.

At Lake Hopatcong, swimming beaches remain closed and visitors are advised to stay out of the water in all other areas besides Indian Harbor.

DEP officials say you can still go out on a boat in those other areas, but they strongly suggest not to make contact with the water.

The bloom can cause a variety of allergic reactions that can become serious.

They also say to not eat any fish caught in the lake, let your pet drink from water or come in contact with it.

The DEP says it's continuously monitoring lakes across New Jersey.