none are likely to gain access moving upstream from the Liffey. Limited inputs suggest that the water is often of poor quality, including suffering from some elevated nutrient levels. The Poddle has been described as artificial since medieval times, though this is primarily related to the boosting of the supply with the feed from the Dodder. However, in modern terms the river is considered a "highly-modified urban watercourse", with at least the following features having been artificially made, in addition to the culverting in the uppermost parts of the course: the ponds in both divisions of Tymon Park, including Tymon Lake, the Lakelands weir, and Lakelands Overflow tunnel from Kimmage to Terenure College's lake, the culvert and former mill works between Wainsfort Manor and Fortfield Avenue, the "canalised" course of the river through Ravensdale Park – the course in this area was moved, and once included a mill and the culverted channel at the former Larkfield Mill, the Stone Boat, and all of the City Watercourse and related structures, and the whole course from around Mount Jerome Cemetery entrance to the Liffey, including linked channels, the late 20th-century syphon and overflow structure at the Grand Canal. Oversight The Poddle flows within the jurisdictions of South Dublin County Council and Dublin City Council, and the Office of Public Works provides advice and support on flooding concerns. The river has no fixed flow or depth gauges, and has not been monitored since 2007, including for water quality, by the Environmental Protection Agency. Popular culture A variation of one of the Poddle's names, "The River Saile", is used in the old children's song Weela Weela Walya, famously performed by The Dubliners. The Poddle is also referenced briefly in James Joyce's Ulysses, and makes multiple appearances in his Finnegans Wake, which touches on its role in the city's water supply. See also Rivers of Ireland List of rivers in County Dublin Sources References External links Tymon Park, including map Pictures and short video of one of the last overground stretches of the River Poddle (the Abbey Stream course), in Blackpitts, Dublin, in 2007, now covered over Urban Tales programme on RTE, gives some history of the Poddle and a view of its underground flow Six precisely captioned photos of the Poddle under Dublin Castle / Dame St. / Temple Bar River Liffey (system) Rivers of South Dublin (county) Tallaght Templeogue Rivers of Dublin (city)