It all depends on the river or lake.
That will depend entirely on what is upstream of the point you are sampling the river water.
yes a river can carry water from a lake to a ocean.
A lake has a limited quantity and the lake is fed from the spring underneath. Its unlikely that a lake can feed a river.
# Beaver Lake # Lake Fort Smith # Arkansas River
It usually goes along a river which it made itself and flows or into a lake or into the sea. The biggest river which stays ''pure'' is the river Amazon, which keeps flowing for 300 km.
River water is the most impure water source among river water, sea water, and Lake water.
Since ganga river is one of the river generating from Himalayas ,is can flow for everytime.so that compare to the other river is pure
River: Missouri River Lake: Lake Oahe
Tombigbee River, Alabama River, Tennessee River, Chattahoochee River, Guntersville Lake, Wilson Lake, Martin Lake, West Point Lake, Lewis Smith Lake and the gulf of mexico
A lake
Mouth of a River
Lake Michigan, Wabash River and the Mississippi River.