River Lee (Ireland) in the context of "Reservoir (water)"

Shown here are all the major rivers and tributaries of Ireland with their lengths (in kilometres and miles). Starting with the Northern Ireland rivers, and going in a clockwise direction, the rivers (and tributaries) are listed in regard to their entry into the different seas: the Irish Sea, the Celtic Sea and the Atlantic Ocean. Also shown are two tables. Table 1 shows the longest rivers in Ireland with their lengths (in kilometres and miles), the counties they flow through, and their catchment areas (in square kilometres). Table 2 shows the largest rivers in Ireland (by mean flow) in cubic metres per second.

The longest river in Ireland is the River Shannon, at 360.5 kilometres (224.0 mi). The river develops into three lakes along its course, Lough Allen, Lough Ree and Lough Derg. Of these, Lough Derg is the largest. The Shannon enters the Atlantic Ocean at the Shannon Estuary. Other major rivers include the River Liffey, River Lee, River Swilly, River Foyle, River Lagan, River Erne, River Blackwater, River Nore, River Suir, River Barrow (The Three Sisters), River Bann, River Slaney, River Boyne, River Moy and River Corrib.

Cork Harbour (Irish: Cuan Chorcaí) is a natural harbour and river estuary at the mouth of the River Lee in County Cork, Ireland. It is one of several which lay claim to the title of "second largest natural harbour in the world by navigational area" (after Port Jackson, Sydney). Other contenders include Halifax Harbour in Canada, Trincomalee Harbour in Sri Lanka and Poole Harbour in England.

The harbour has been a working port and a strategic defensive hub for centuries, and it has been one of Ireland's major employment hubs since the early 1900s. Traditional heavy industries have waned since the late 20th century, with the likes of the closure of Irish Steel in Haulbowline and shipbuilding at Verolme. It still has strategic significance in energy generation, shipping, refining and pharmaceuticals development.

Cork (Irish: Corcaigh [ˈkɔɾˠkəɟ]; from corcach, meaning 'marsh') is the second-largest city in Ireland, the county town of County Cork, the largest city in the province of Munster and the third largest on the island of Ireland. At the 2022 census, it had a population of 224,004.

The city centre is an island between two channels of the River Lee which meet downstream at its eastern end, where the quays and docks along the river lead outwards towards Lough Mahon and Cork Harbour, one of the largest natural harbours in the world.

The Jack Lynch Tunnel (Irish: Tollán Sheáin Uí Loingsigh) is an immersed tube tunnel and an integral part of the N40 road network in Cork, Ireland. It is named after former Taoiseach, Jack Lynch, a native of Cork.

It takes the road under the River Lee. North of the tunnel, the ring-road joins the M8 motorway to Dublin (north) and N8 road to the city centre (west), with the N25 commencing east to Waterford. The tunnel was completed in May 1999, and carried nearly 40,000 vehicles per day as of 2005. This number rose further as the N40 ring-road's upgrades progressed, with the opening of the Kinsale road roundabout flyover in 2006 and subsequent upgrades to the Sarsfield Road and Bandon Road Roundabouts. Traffic in 2016 was approximately 63,000 vehicles a day up from 59,000 in 2013.