Lake/River: The Lake and River courses have had essential drainage work done on some of the fairways and around some of the greens. All trolleys and buggies allowed. Lake/Valley: The Lake and River courses have had essential drainage work done on some of the fairways and around some of the greens. All trolleys and buggies allowed. River/Valley: The Lake and River courses have had essential drainage work done on some of the fairways and around some of the greens. All trolleys and buggies allowed.