Seneca Reservoir is an covered open-cut "million dollar reservoir" in the Oakland Hills that was first dedicated by EBMUD on September 18, 1950.¹ At least a portion of the reservoir property was formerly part of a quarry operated by Joseph Catucci and later by his widow, Bella Catucci; the remaining portion of the quarry property became the site of Bishop O'Dowd High School.²

The reservoir, which has a capacity of approximately 30 million gallons, is no longer in use, and is scheduled to be demolished in 2018.³ It is not known what EBMUD will do with the property after the reservoir is demolished.

The reservoir is accessed at the end of Seneca Street, which was originally laid out as Hillcrest Avenue as part of Toler Heights.