flow, and the Tyne River in northern England, which flows past Newcastle upon Tyne to the North Sea. Thames River, London The Thames River in London is the most important river in England and the main source of Londons water supply. M Bertinetti/Photo Researchers. Inc In Scotland the important rivers are the Clyde and the Forth, which are joined by a canal. The River Clyde flows northwest, past Glasgow, and empties into the Atlantic at the Firth of Clyde.(Firth is the Scottish name for an arm of the sea that serves as the broad estuary of a river. )The River Forth flows eastward into the Firth of Forth, where Edinburgh rises on its south bank. The most important rivers in Northern Ireland are the Lagan, the Bann, and the Foyle Most of the large lakes in the United Kingdom are located in the upland areas of Scotland and northern England. although lough Neagh in northern ireland is the largest lake in the United Kingdom. Loch Lomond, on the southwestern edge of the Highlands of Scotland, is the largest on the island of Great Britain, measuring 37 km(23 mi) long and from 1.6 to 8 km(I to 5 mi) wide. Lake Windermere is the largest of the 15 major lakes in the famous Lake District of northwestern England. It is about 1.6 km(I mi)wide and more than 16 km(10 mi)long Microsoft? Encarta? Encyclopedia 2002. 1993-2001 Microsoft Corporation. All rights reserved The Union Jack(Flag. The Union Jack is a combination(union)of the flags of St George, St Andrew and St Patrick. The flag of St George is white with a red cross. The flag of St Andrew is blue with a white diagonal cross and the flag of St Patrick is white with a red diagonal crossflow; and the Tyne River in northern England, which flows past Newcastle upon Tyne to the North Sea. Thames River, London The Thames River in London is the most important river in England and the main source of London’s water supply.M. Bertinetti/Photo Researchers, Inc. In Scotland the important rivers are the Clyde and the Forth, which are joined by a canal. The River Clyde flows northwest, past Glasgow, and empties into the Atlantic at the Firth of Clyde. (Firth is the Scottish name for an arm of the sea that serves as the broad estuary of a river.) The River Forth flows eastward into the Firth of Forth, where Edinburgh rises on its south bank. The most important rivers in Northern Ireland are the Lagan, the Bann, and the Foyle. Most of the large lakes in the United Kingdom are located in the upland areas of Scotland and northern England, although Lough Neagh in Northern Ireland is the largest lake in the United Kingdom. Loch Lomond, on the southwestern edge of the Highlands of Scotland, is the largest on the island of Great Britain, measuring 37 km (23 mi) long and from 1.6 to 8 km (1 to 5 mi) wide. Lake Windermere is the largest of the 15 major lakes in the famous Lake District of northwestern England. It is about 1.6 km (1 mi) wide and more than 16 km (10 mi) long. Microsoft? Encarta? Encyclopedia 2002. ? 1993-2001 Microsoft Corporation. All rights reserved. The Union Jack (Flag) The Union Jack is a combination (union) of the flags of St George, St Andrew and St Patrick. The flag of St George is white with a red cross. The flag of St Andrew is blue with a white diagonal cross and the flag of St Patrick is white with a red diagonal cross