Simplify the following text for a Grade 4 native English-speaking person.
Original: Buffalo is located on the eastern end of Lake Erie , opposite Fort Erie , Ontario in Canada , and at the beginning of the Niagara River , which flows northward over Niagara Falls and into Lake Ontario .
Simplified: Buffalo is on the eastern side of Lake Erie near the Niagara River . It is close to Niagara Falls , and to Canada .