Today now there is mountains here was sea and there was sea here was mountains so mountains are main sources of unused water.
Most rivers begin in the Appalachian mountains or rivers flow into the Gulf of Mexico.
mountains
Tennessee and cumberland rivers
Most rivers begin in the Appalachian mountains or rivers flow into the Gulf of Mexico.
Rivers' sources are the mountains, more from the glaciers that are still on the mountains than from the mountains themselves.
they begin usually in the mountains from snow melt, but sometimes their origins are in underground springs. All rivers go to the ocean but never come from the ocean. As for lakes, how do you think the water got there? probably snow melt from a nearby mountain.
Ganges
Most of the rivers in the eastern United States begin in the Appalachian Mountains. This mountainous region serves as a significant watershed, where precipitation collects and flows downwards, creating numerous streams and rivers. The rivers generally flow eastward toward the Atlantic Ocean, with some rivers also flowing into the Gulf of Mexico. In contrast, many rivers in the West originate in the Rocky Mountains.
The Tigris and Euphrates rivers begin in Turkey. They originate in the eastern part of the country, specifically in the Taurus Mountains. The rivers then flow through Syria and Iraq, where they eventually converge and empty into the Persian Gulf.
Mountains, because the area is rich in rain, snow melt, or springs.
ganga and yamuna. The Ganges and Yamuna or Jumna.
The Tigris and Euphrates rivers begin in the Taurus Mountains in eastern Turkey. These mountains are part of the larger Alpine-Himalayan mountain belt that spans from the Mediterranean Sea to the Himalayas.