The Tryweryn is a river in North Wales. It starts from Llyn Tryweryn in the Snowdonia National Park and after 19 km joins the river Dee at Bala. It is one of the main tributories of the Dee and has been dammed to form Llyn Celyn. Water is stored in winter when flows are high, and released over the summer to maintain the flow in the Dee (the Dee is used as the water supply for cities in North West England). The Murray River in Australia. ... For an explanation of often confusing terms such as Great Britain, Britain, United Kingdom and England, see British Isles (terminology). ... See also Snowdonia Snowdonia National Park, or Parc Cenedlaethol Eryri (in Welsh) was established in 1951 as the third national park in England and Wales. ... Old Dee Bridge, River Dee, Chester, England (2002) The River Dee (Welsh: Afon Dyfrdwy) is a 70 mile (110 km) long river, which rises in Snowdonia, Wales and discharges to the sea a few miles west of Liverpool. ... Bala has several meanings: Three places: Bala, Greece, a suburb of Athens, it is also a Modern Greek word for ball. ... Scrivener Dam, in Canberra, Australia, was engineered to withstand a once-in-5000-years flood event A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. ... Llyn Celyn is a large reservoir constructed in 1961 in the valley of the River Tryweryn in North Wales. ... Royal motto (French): Dieu et mon droit (Translated: God and my right) Englands location within the British Isles Official language English de facto Capital London de facto Largest city London Area – Total Ranked 1st UK 130,395 km² Population – Total (mid-2004) – Total (2001 Census) – Density Ranked 1st UK...

The Tryweryn is an important river for whitewater kayaking and rafting. The regular releases from Llyn Celyn in summer mean that kayak events and trips can be planned in advance, and commercial rafting can take place (most whitewater rivers in Wales rely on recent rain to have enough water for kayaking or rafting, and public access to other rivers is rare). The Welsh Canoe Association manage kayaking and rafting on the river, charging paddlers to canoe and running commercial raft trips. There is a cafe and campsite. Whitewater kayaking is the sport of paddling a kayak on a moving body of water, typically a river. ... It has been suggested that this article or section be merged with Whitewater. ...

The natural whitewater rapids have been modified (boulders have been moved) to make them safer and to build playspots (for a description of the most famous playspots, see Playak - Canoe & Canoe News). The river is usually considered to be grade III. Usually between 9 and 12 m³/s are released. Whitewater is formed in a rapid, when a rivers gradient drops enough to form a bubbly, or aerated and unstable current; the frothy water appears white. ... Playboating is a discipline of kayaking or canoeing where the paddler performs various technical moves in one place (a playspot), as opposed to whitewater canoeing or kayaking where the objective is to travel the length of a section of river (although whitewater canoeists will often stop and play en-route). ...