"... The property was previously farmland (condemned as flood plain) when McNary Dam was constructed in the early 1950s. The 20-acre lagoon was created when the property was excavated for dirt fill used in construction of the adjacent dike. This park contains a wide variety of habitats which provide year-round forage and shelter for many resident and migratory birds. Passerines and raptors are are often found in the thickets along the base of the dike, the small marsh adjacent to the playground, and the many deciduous and evergreen trees. Scan the Columbia River (Lake Wallula) and the park lagoon for loons, grebes, waterfowl and the occasional shorebird. Walk the nature trail along the edge of the extensive marshland in the undeveloped portion of the park for additional sightings. ..." [Lower Columbia Basin Audubon Society Website, 2007]

Two Rivers County Park is located directly across the Columbia from Sacajawea State Park, where Lewis and Clark spent two nights in October, 1805. Also directly across from Two River County Park is the mouth of the Snake River where it merges with the Columbia. Behind Two Rivers County Park rise the Horse Heaven Hills and downstream of the park is located the upstream end of the Wallula Gap.