The linchpin of the long-planned 10-acre Georgetown Waterfront Park, which advocates hope will transform the Potomac shoreline from an industrial mess into a contemporary riverfront playground, is nearing final approval from planning officials.

The park’s estimated $6 million, 2.3-acre second phase, scheduled for final consideration Thursday by the National Capital Planning Commission, is considered the park’s centerpiece. Stretching from Wisconsin Avenue to 31st Street, its design features a large fountain, pergola, stairs to the river and stone benches.