[1] The river valley was once occupied by prehistoric Native American settlements surveyed in the 1980s when the modern dam was drained for maintenance.

[3] The Triadelphia Cotton Factory (Montgomery Manufacturing Company) managed by Allen Bowie Davis operated 196 spindles from its waterwheel and grew to several dozen buildings by 1850 including Mt.

The Ligon family purchased the land, using it for storage and tenants until it went underwater with the construction of the reservoir.

[7] The reservoir holds approximately 6,300,000,000 US gallons (19,000 acre⋅ft) of drinking water source and is managed by the Washington Suburban Sanitary Commission (WSSC).

[9] WSSC provides recreational facilities to the public on portions of the Triadelphia property, including hiking, picnicking, fishing, boating, horseback riding, and hunting.