From the Merritt Parkway, exit 37, turn left taking Route 124 north towards New Canaan.  Go about 3/10 mile and turn left between stone pillars into Waveny Park.  Go about 5/10 mile on the park road.  Waveny Varsity Softball Field (the "Orchard Field") is the first field you will see on your right just after the playground/exercise area.    Turn right into the parking lot.

The park also has an entrance from the West off Lapham Road.

From the Merritt Parkway, exit 37, turn left taking Route 124 north towards New Canaan.  Go about 3/10 mile and turn left between stone pillars into Waveny Park.  Go about 3/10 mile on the park road. The entrance to Water Tower field is off the main driveway to the right in what looks like a small dirt access road.  Parking is available adjacent to the field.  When approaching from Rt 124 (South Ave) if you come to the playground/exercise area on the right you have missed the entrance.

The park also has an entrance from the West off Lapham Road.