The River Dodder is an urban river flowing through south Dublin, running roughly from the Tallaght area through suburbs including Templeogue, Rathfarnham, Milltown, and Ballsbridge before joining the River Liffey at Ringsend. The UCD Canoe Club rates the river at Grade 2-3, indicating moderate to intermediate whitewater character.

The lower tidal section near Ringsend can be accessed by kayak from the River Liffey at high tide, as demonstrated by at least one documented trip in February 2023. This tidal stretch transitions to the main river corridor upstream. High stone flood walls line portions of the river in the lower reaches, which can limit bank access in those areas. Further upstream, much of the river is bordered by linear parks — including Dodder Valley Park — which provide more open access along the banks.

Water levels on the Dodder respond quickly to rainfall. After heavy precipitation, currents can become strong and conditions dangerous, a factor that applies equally to paddlers as to those attempting the river's ford crossings. Paddlers should monitor water levels carefully before committing to a trip.

The river supports a notable variety of wildlife despite its urban setting, including mallards, dippers, cormorants, grey herons, mute swans, and gulls. Terns are present in the Ringsend area during spring. The river also holds a healthy population of brown trout throughout much of its length, with sea trout entering the lower reaches in late summer.

Public transport access is good throughout the corridor, with bus routes serving suburbs along the river including Templeogue, Rathfarnham, and Bushy Park. The Dodder Greenway runs alongside portions of the river and has seen recent infrastructure upgrades, improving access along the corridor.