A detailed site plan will follow the preliminary plans soon, according to the city planning director.
Trails in the College Park, Hyattsville, Riverdale Park and Bladensburg areas will be closed until further notice.
Sept. 10's flood caused damage to some residents' cars and houses.
Construction is set to begin in the fall.
John Lea-Cox and Andrew Ristvey are working with Up Top Acres to farm rooftop produce.