Alps rivers such as the Danube have major tributaries flowing into them that originate in the Alps. The Rhône is second to the Nile as a freshwater source to the Mediterranean Sea; the river begins as glacial meltwater, flows into Lake Geneva, and from there to France where one of its uses is to cool nuclear power plants. The Rhine originates in a 30 square kilometre area in Switzerland and represents almost 60 percent of water exported from the country. Tributary valleys, some of which are complicated, channel water to the main valleys which can experience flooding during the snow melt
Geography of Dorset the Channel at Charmouth. The River Brit rises north of Beaminster, flows south through Bridport and enters the Channel at West Bay. Near the village of Burton Bradstock, about 1 mile east of the mouth of the Brit, is the terminus of the small River Bride; this rises at Bridehead in the hills between Dorchester and Bridport, and flows westwards for about seven miles "before sinking into the shingle" of Chesil Beach. Further east along the coast is the River Wey, which flows into Radipole Lake in Weymouth, and enters the Channel through Weymouth Harbour. Dorset has no large freshwater