Are all lakes in Pennsylvania manmade?
No There are 2,500 man made lakes in Pennsylvania and 50 natural lakes.
See the related link for further information.
The Grand Canyon of Pennsylvania is in the northeast. The Appalachian Mountains cut diagonally from northeast Pennsylvania to almost southwest Pennsylvania, with the Allegheny Mountains and Pocono Mountains part of the Appalachian Mountains. PA has beautiful creeks, streams, rivers, lakes, and manmade dams.
No. The waterway is a manmade construction along the course of the St. Lawrence River, through which the Great Lakes empty into the North Atlantic Ocean. The waterway's purpose is to deepen the channel for ocean-going vessels and to provide hydroelectric power. The Great Lakes have no natural link to the Mississippi River.
LakeLocationArea in Square Miles Lake SuperiorMichigan-Minnesota-Wisconsin-Ontario31,700 Lake HuronMichigan-Ontario23,000 Lake MichiganIllinois-Indiana-Michigan-Wisconsin22,300 Lake ErieMichigan-New York-Ohio-Pennsylvania-Ontario9,910 Lake OntarioNew York-Ontario7,340 Lake of the WoodsMinnesota-Manitoba-Ontario1,485 Great Salt LakeUtah2,117 Iliamna LakeAlaska1,014 Lake Oahe (manmade)North Dakota-South Dakota685 Lake OkeechobeeFlorida662 Lake PontchartrainLouisiana631 Lake Sakakawea (manmade)North Dakota520 Lake ChamplainNew York-Vermont-Quebec490 Becharof LakeAlaska453 Lake St. ClairMichigan-Ontario430 Red LakeMinnesota427 Selawik LakeAlaska404 Fort Peck Lake (manmade)Montana393 Salton SeaCalifornia347 Rainy LakeMinnesota-Ontario345
Using the definition of "not sharing any borders with an ocean", there are 27 landlocked US states. Pennsylvania could be considered to have a coast because of the Delaware River estuary (57 miles or 89 km in length). Another 6 states, in addition to New York and Pennsylvania, have shorelines on the Great Lakes. The 27 US states not having an actual ocean coast: Arizona Arkansas Colorado Idaho Illinois (Great Lakes) Indiana (Great Lakes) Iowa…