<Table> <Tr> <Th_colspan="2"> Frio River </Th> </Tr> <Tr> <Td_colspan="2"> Location of the Frio River, Texas </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th_colspan="2"> Physical characteristics </Th> </Tr> <Tr> <Th> Main source </Th> <Td> Real County, Texas 2,300 ft (700 m) </Td> </Tr> <Tr> <Th> River mouth </Th> <Td> Nueces River, Live Oak County, Texas </Td> </Tr> <Tr> <Th> Length </Th> <Td> 200 mi (320 km) </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> <Ul> <Li> Average rate: 26 cu ft / s (0.74 m / s) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Basin features </Th> </Tr> <Tr> <Th> Basin size </Th> <Td> 7,310 sq mi (18,900 km) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Frio River </Th> </Tr>

Where does the frio river start and end
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