Chapter 1 Section 2 Water forms of PA

I. Rivers and Tributary Systems  3 major river systems – The Allegheny  Western PA  Actually consists of 3 major rivers  The Allegheny  The Ohio  The Monongahela  Major rivers of commerce – The Susquehanna  Northeastern PA  Starts in NY  Flows south through the entire state of PA  Too shallow for boats to travel on – The Delaware  Eastern PA  Forms a natural border with New Jersey  Philadelphia  Located on the Delaware  Major deep water port

II. Lakes and Wetlands  Lakes – There are more than 2000 small lakes in PA – Most were created by glaciers – Biggest Lakes in PA  Pymatuning Reservoir  Raystown Lake  Lake Wallenpaupack  Wetlands – Lowland areas, such as marshy or swampy places that hold moisture – Excellent habitats for wildlife

III. Reservoirs and Dams  Reservoirs – A natural or artificial pond or lake used for the storage and regulation of water  Dams – Help regulate the flow of water – Also provide Hydro electrics – There are 1564 Dams in PA – Largest  Kinzua Dam  Alleghany National Forest  Statistics  Type of structure: Concrete dam and earth embankment  Height above streambed, feet – 179  Length, feet – 1,877 – Concrete section – feet; earth embankment – 1,098.5 feet  Width at base, feet  1,245  concrete section – 195 feet; earth embankment – 1,050 feet  Volume of earth fill, cubic yards – 3,000,000  Volume of concrete, cubic yards – 500,000