They say spring storms wash manure, fertilizers and sewage into waterways, providing the phosphorus that feeds the algae. This year, those storms have been less frequent.

University of Toledo algae researcher Thomas Bridgeman said stream-flow data suggest the algae bloom on Lake Erie this year will be smaller and thinner. He says there’s still likely a “sizable amount” of harmful algae on the bottom of the lake that could be easily stirred up and grow.

Massive algae blooms can be a deadly threat to fish and a turn-off for tourists.

The algae produce a nerve toxin that can sicken humans and kill pets and other animals.

The Lima News reports parts for the new 57-ton craft were unloaded last week at Grand Lake St. Marys State Park. The Ohio Department of Natural Resources says the crew hoped to have the boat ready to launch in a few days, but more work was needed to make the 67-foot-long craft operable.

The 12-inch suction dredge named “Brutus” will help remove silt that collects on the lake floor and is rich in phosphorus that feeds the algae blooms.