<Table> <Tr> <Td_colspan="2"> River Clyde </Td> </Tr> <Tr> <Td_colspan="2"> River </Td> </Tr> <Tr> <Td_colspan="2"> The River Clyde at Glasgow's Broomielaw </Td> </Tr> <Tr> <Th> Country </Th> <Td> Scotland </Td> </Tr> <Tr> <Th> Counties </Th> <Td> Argyll, Ayrshire, Dunbartonshire, Inverclyde </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> City </Th> <Td> Glasgow </Td> </Tr> <Tr> <Th> Landmarks </Th> <Td> Falls of Clyde (waterfalls), Bothwell Castle, Firth of Clyde </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Source </Th> <Td> Lowther Hills in South Lanarkshire </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 55 ° 24 ′ 23.8" N 3 ° 39 ′ 8.9" W ﻿ / ﻿ 55.406611 ° N 3.652472 ° W ﻿ / 55.406611; - 3.652472 </Td> </Tr> <Tr> <Th> Mouth </Th> <Td> Firth of Clyde </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 55 ° 40 ′ 46.3" N 4 ° 58 ′ 16.7" W ﻿ / ﻿ 55.679528 ° N 4.971306 ° W ﻿ / 55.679528; - 4.971306 Coordinates: 55 ° 40 ′ 46.3" N 4 ° 58 ′ 16.7" W ﻿ / ﻿ 55.679528 ° N 4.971306 ° W ﻿ / 55.679528; - 4.971306 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Length </Th> <Td> 176 km (109 mi) </Td> </Tr> <Tr> <Th> Basin </Th> <Td> 4,000 km (1,544 sq mi) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> River Clyde </Td> </Tr>

What is the source of the river clyde