The caches are placed about four miles apart on the Sudbury River and the two can be done together in a morning or afternoon by someone with moderate paddling skills, or they can be located individually - your preference. You should completely read this page and plan out your trip before you head out.
There are a number of choices to be made, depending on whether you own, or have use of, a canoe (or kayak). If you do not own a boat, you can rent either a canoe or kayak by the hour at the South Bridge Boat House in Concord. ( Coordinates: 42 27.502 N, 71 21.979 W). From the SBBH, River Cache #1 is about 1.1 miles downstream (north), and River Cache #2 is about #2.8 miles upstream (south). Call for hours. It appears they open about 10:00 A.M. on Sunday.
If you have your own kayak, you can put in at the Lowell Road landing just a short distance out of Concord center on the road to Carlisle. There is a small dirt road on the left just before the Concord River which leads to a landing where about half a dozen cars can park (Coordinates: 42 27.966 N, 71 21.344 W). Cache #1 is very close upstream from this put-in, so you may want to continue upstream towards Cache #2. This section of the River will take you past the place where the Sudbury and Assabet Rivers merge to form the Concord River. If you continue on the Sudbury River (left at the fork), you will go past several large old Concord homes whose yards go down to the riverfront. If you'd rather, once you find Cache #1, you can turn around and go downstream (north), where you will soon (about ten minutes) pass the famous Old North Bridge, with the Buttrick Mansion on the left.
Another option if you have your own kayak or canoe is to put in at the Route 117 landing in Lincoln, not far from the Lincoln Logic cache. ( Coordinates for the parking lot are: 42 25.144 N, 71 21.659 W ). From the parking lot you will go down a little path to a put-in which will take you out to the Sudbury River. Cache #2 is about a 20 minute paddle north (downstream) from here. This section of the river is wilder and less developed. You are quite likely to see a great blue heron or two and possibly some turtles sunning themselves on a rock.
Ducks and geese can be seen a number of places along the river. There's usually a gaggle around the South Bridge Boat House.
If you'd like to take a look at a topographical map of this section of the river, you can visit our web site at http://home.comcast.net/~jennings.dh/geocaching/gd_geo.htm.
We hope you will have an enjoyable experience on the water. Let us know how you did !!