The Bear's Den Preserve consists of 15.4 acres on the summit and western escarpment of Butternut Hill, located the middle of the Taconic valley on the Berlin-Stephentown line. The principal feature of the parcel is Bear's Den, a rock shelter cave with a main chamber about 15 feet in diameter. The cave was known to early settlers and probably Native Americans as well.

The Black River property consists of 22.6 acres of land in Stephentown, bordering the Black River. Most of the land is covered by hemlock-northern hardwood forest. The ruins of a sawmill foundation and sluiceway can be seen. Access is permitted for fishing, hiking, swimming or nature study, with the permission of the owners and the RLT.

The Broderick property and Broderick-Olsen property contain a total of 86 acres of land in the Town of Grafton, adjoining the Dyken Pond Environmental Education Center on the west. A network of two miles of marked trails connect to trails on the Center property. The public are permitted on this property subject to the rules and regulations of the Dyken Pond Center. In addition, horses and mountain bikes are not permitted.

The Common Farms protected property is a 129.5 acre parcel of forested land bordering the Poestenkill Creek gorge on the western edge of the Rensselaer Plateau.  The Poestenkill Creek borders approximately 2,000 feet of the south side of the property.  The Davitt Pond outlet stream crosses the northeastern corner of the property.  It is forested with generally mature forest with a mix of oak and maple with some hemlocks at the lower elevations.  The property is commonly owned by the landowners of Common Farms and it is not open to the public.   

The Friends of Dyken Pond property is an approximately two-acre parcel of land bordering the Poesten Kill in Brunswick. Located at the end of Kenworth Avenue on the south side of State Route 2, the property preserves valuable open space in a suburban neighborhood, and provides a starting point for protecting the stream corridor. The property, which is forested, slopes steeply toward the Poesten Kill, and includes a small island. Located on a scenic section of the Poesten Kill just upstream from a narrow gorge, it provides impressive views of the creek, both up and down stream. This property will be used a nature preserve, in conjunction with educational purposes. At present, access is restricted and prior permission must be obtained through the Friends of the Dyken Pond Center, Inc. or the RLT.