The Waltham section has a dam at Moody St. To get to the ramp take rt20 toward Boston- a right onto Prospect st - Right on Crescent st - right onto Woerd av - ramp is on the right. The Basin is down town Boston. Storrow Dr runs along the basin. The ramp is in Brighton. Take rt128 to rt16 exit - follow for a couple miles you come to a rotary, stay on rt16. You will see the river on your left, go straight through set of light that is Nonantum St follow that about 1mi. you will see the MDC skate rink on the left - ramp is just past it on the left