James J. Lenihan Dam is an earthen structure across the Los Gatos Creek creating the Lexington Reservoir in the Santa Cruz Mountains of Santa Clara County, California south of Los Gatos. The name was changed from Lexington Dam in 1996 for the retirement of James J. Lenihan, the Santa Clara Valley Water District's longest-serving director.

• List of dams and reservoirs in California

• Department of Water Resources (2009). "Station Meta Data: James J. Lenihan Dam (LNG)". California Data Exchange Center. State of California. Retrieved 2009-04-01.
• Department of Water Resources (2009). "Dams Within the Jurisdiction of the State of California" (PDF). State of California. Archived from the original (PDF) on 2009-04-11. Retrieved 2009-04-01.

• U.S. Geological Survey Geographic Names Information System: James J. Lenihan Dam
• https://web.archive.org/web/20100423163953/http://www.valleywater.org/Services/LexingtonReservoirAndLenihanDam.aspx
• http://www.metroactive.com/papers/metro/09.25.97/cover/naming1-9739.html