1991 Map of Rockport

Further inland, the map captures the transition from the floodplains of Pleasant Vale to the dissected uplands of Derry. The presence of specialized engineering, such as the Brewster Settling Basin and Stillhouse, highlights the intensive management of sediment and runoff from the hills into the lowland drainage of The Sny. For genealogists, the map preserves the locations of several family-named burial grounds, including Hornback Cem, Taylor Cem, and Morey Cem, which remain tucked into the bluffs above the river valley.