1970 Map of Frisco

About this map

Dillon Reservoir dominates the landscape of this late-century survey, its expansive waters submerging the former floor of the Blue River valley. The map documents the region's transition into a major recreation hub, featuring numerous campsites and boat ramps alongside the town of Frisco. Evidence of the area's hydraulic history remains visible through the Roberts Tunnel and the Glory Hole, while the Old Dillon Reservoir sits perched above the modern shoreline. Along the western edge, the Tenmile Range rises sharply with peaks like Tenmile Peak, contrasting with the industrial traces found at Braddock Flats. This edition is particularly valuable for locating the Masontown (Site) and tracing the original course of the Blue River before it enters the reservoir arm. The presence of the Dillon Cem and County Schools provides essential points of reference for local family history.