Union Village Dam is a US Army Corps of Engineers facility located on the Ompompanoosuc River in Thetford, VT. Close to the towns of Hanover, New Hampshire, and Norwich, Vermont, Union Village Dam is a popular destination for outdoor recreation in the Upper Valley. Natural Features: Union Village Dam provides a sandy swimming beach and over a mile of trails to explore on the property. Shaded areas and open lawns provide a variety of picnic opportunities along the Ompompanoosuc River. Recreation: Swimming, fishing, and hiking are all popular activities at Union Village Dam. A playground, horseshoe pit, volleyball net, picnic tables and grills are available for all to enjoy. Family gatherings and events are also popular at our picnic pavilion. Facilities: The picnic pavilion at Union Village Dam can accommodate approximately 65 people. Flush toilets are located next to the pavilion, while portable toilets are provided at the beach area and picnic tables and grills are dispersed throughout the park.