 It's 522. River Mill Park in Occoquan has reopened after flooding from a nearby water main break forced it to shut down Thursday night. Mayor Ernie Porta told Inside Nova in an email that town officials closed the park about 8 p.m. after the water main break under the Fairfax Water Access Road to the dam. He said the break caused water to pour from underneath the pavement, down the slopes behind and adjacent to the love sign and through the park.