WALNUT CREEK -- The city will create and then launch two floating islands in the cement pond in Heather Farm Park on Tuesday.
In an effort to clean up pollutants, create new habitat and encourage fish spawning, two "BioHaven Floating Islands" each 100 square feet will be built for the man-made lake in the park beginning at 10 a.m., Tuesday.
The islands are made of recycled plastic drinking bottles on the bottom, then mulch and native plants are placed on top. The islands will be chained to the bottom of the lake so they won't move around too much.
Within a year's time, the islands, like wetlands, will be established, and the root system -- which can grow 4 feet long -- will suck out pollutants in the
Besides cleaning up the water, which is a major motivation for Vickers, the islands will create shade for fish, which will help fish spawning in the pond surrounded by cement, he said.
"We wanted to figure out how make the lake more inviting for spawning and make it easier for kids to catch fish," Vickers said.
For the first several months, nets will be placed over the islands to discourage geese. Once the netting is removed, the native plants will likely draw wildlife such as birds, insects and frogs.
The cost of the project is $12,000.
The Diablo Valley Fly Fishing Club and Walnut Creek Open Space Foundation will assist with the planting
Contact Elisabeth Nardi at 925-952-2617. Follow her at Twitter.com/enardi10.