Inniscarra Reservoir, also known as Inniscarra Lake or Lough Inniscarra, is a man-made reservoir located along the River Lee in County Cork, Ireland. It was created by the Electricity Supply Board with construction of Inniscarra Dam commencing in 1953, the floodgates first closed in 1956, and the reservoir fully formed by late 1957. The surface area covers approximately 4.9 km² (1.9 sq mi), making it one of the larger waterbodies in the south-west region of Ireland. The reservoir is operated for hydropower generation and provides some flood protection to Cork city, while also serving as the largest source of drinking water in County Cork.

The reservoir supports a range of water-based activities including boating, sailing, kayaking, and swimming. The Inniscarra Sailing and Kayaking Club is based on the water. The National Rowing Centre is also located on its banks, and the reservoir regularly hosts regattas including the Irish National Rowing Championships. Paddlers should be aware that the water is shared with rowing, sailing, and other boating traffic, particularly during events.

Coachford village serves as the primary gateway to the reservoir. A 2.8 km Greenway runs along the water from Coachford, offering secure parking. Vehicle access to the Greenway requires contacting O'Callaghan's Bar in Coachford, where paddlers sign an indemnity and receive a key in exchange for a €50 refundable deposit. Nearby settlements include Farran on the south bank and Dripsey to the north, with Farran Forest Park providing views over the reservoir. Blarney and Cork City are a short drive away.

The reservoir's shoreline has been developed in several locations to enhance access, primarily for anglers, though these access points may also be useful for paddlers launching. Fish species present in the water include rudd, roach, carp, perch, gudgeon, eels, pike, and bream, indicating a healthy freshwater ecosystem. Invasive species recorded in and around the reservoir include Japanese Knotweed, American Mink, and Nuttall's Waterweed, among others, which paddlers should be aware of from a biosecurity standpoint.

Accommodation options including B&Bs and hotels are available in and around Coachford village, making it a practical base for multi-day paddling trips.