Simplify the following text for a Grade 5 native English-speaking person.
Original: Stockport is a large town in Greater Manchester , England . It lies on elevated ground on the River Mersey at the confluence of the rivers Goyt and Tame , 6.1 m southeast of the city of Manchester .
Simplified: The River Mersey begins in Stockport , at the meeting point of the Rivers Goyt and Tame .