The Gahanna service department is asking interested parties to attend an open house on Aug. 6 to discuss the creation of a pond in the 400 block of North Hamilton Road and the restoration of a stream there.

The Gahanna service department is asking interested parties to attend an open house on Aug. 6 to discuss the creation of a pond in the 400 block of North Hamilton Road and the restoration of a stream there.

Residents of Gramercy Park will be particularly affected by construction of this park, city director of public service Terry Emery has said. It will help curb or even stop flooding in that neighborhood.

The open house runs from 4 to 7 p.m. at city hall, 200 S. Hamilton Road, and will cover plans to construct this fall the Sycamore Run Park. The property is off the west side of the road at 433 N. Hamilton Road.

The open house format will include exhibits of the project area and detailed engineering plans.

It will be staffed by representatives of the city service, engineering and parks departments as well as representatives of EMH&T Consulting Group.

The pond will be about an acre in size, said Jeff Feltz, Gahanna's water resources engineer.

"Currently, there is a home at the end of a long asphalt driveway, about 50 yards from Hamilton Road," Feltz said. "The house and garage will soon be demolished and that's the approximate location of the pond."

The pond is designed to be 8- to 9-feet deep.

"The drainage area is quite large and it should maintain its normal pool elevations, even during the drier months," Feltz said.

City officials said the pond will act as a storm-water management pond to collect and store water from future development of the adjacent Stonehenge property, as well as the future widening of North Hamilton Road.

It will also help store water from the upper reaches of the Sycamore Run watershed. This will decrease high velocity flows downstream of the basin in the Gahanna Heights subdivision.

A stream running through the southeast corner of the property will be restored as part of the development, Feltz said. It's an unnamed tributary to Sycamore Run.

"Right now, it is a very narrow, deep channel," Feltz said. "The project will create floodplain, riffles and pools and it will be planted with native plants and trees."

The stream is currently in a highly degraded state, city officials said. It will be upgraded at the point it enters the site at Hamilton Road to the southwest corner of the property.

Improvements include construction of floodplain, pools and riffles, along with native plantings. A conservation easement will be dedicated to protect the stream. The city will receive a $45,000 American Recovery and Reinvestment Act grant for this part of the project.