Holtwood Environmental Preserve is a protected area

Protected area

Protected areas are locations which receive protection because of their recognised natural, ecological and/or cultural values. There are several kinds of protected areas, which vary by level of protection depending on the enabling laws of each country or the regulations of the international...

 owned by PPL

PPL (utility)

PPL, formerly known as PP&L or Pennsylvania Power and Light, is an energy company headquartered in Allentown, Pennsylvania, USA. It currently controls about 19,000 megawatts of electrical generating capacity in the United States, primarily in Pennsylvania and Montana, and delivers electricity to...

 in southeastern Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

. It covers over 5000 acres (2,023.4 ha) near the Holtwood Dam

Holtwood Dam

Holtwood Dam is the oldest of three major dams built across the lower Susquehanna River, and the middle location of the three. It was constructed as the McCalls Ferry Dam between 1905 and 1910 by the Pennsylvania Water & Power Company...

 on the Susquehanna River

Susquehanna River

The Susquehanna River is a river located in the northeastern United States. At long, it is the longest river on the American east coast that drains into the Atlantic Ocean, and with its watershed it is the 16th largest river in the United States, and the longest river in the continental United...

 in Lancaster

Lancaster County, Pennsylvania

Lancaster County, known as the Garden Spot of America or Pennsylvania Dutch Country, is a county located in the southeastern part of the Commonwealth of Pennsylvania, in the United States. As of 2010 the population was 519,445. Lancaster County forms the Lancaster Metropolitan Statistical Area, the...

 and York Counties

York County, Pennsylvania

York County is a county in the U.S. state of Pennsylvania. As of 2010, the population was 434,972. It is in the Susquehanna Valley, a large fertile agricultural region in South Central Pennsylvania....

, and includes 200 acres (80.9 ha) of mesophytic old-growth forest including Eastern Hemlock

Eastern Hemlock

Tsuga canadensis, also known as eastern or Canadian hemlock, and in the French-speaking regions of Canada as pruche du Canada, is a coniferous tree native to eastern North America. It ranges from northeastern Minnesota eastward through southern Quebec to Nova Scotia, and south in the Appalachian...

, Chestnut Oak

Chestnut oak

Quercus prinus , the chestnut oak, is a species of oak in the white oak group, Quercus sect. Quercus. It is native to the eastern United States, where it is one of the most important ridgetop trees from southern Maine southwest to central Mississippi, with an outlying northwestern population in...

, and Umbrella Magnolia

Umbrella magnolia

Magnolia tripetala, commonely called Umbrella magnolia or simply Umbrella-tree, is a deciduous tree native to the southeastern United States in the Appalachian Mountains region. Umbrella magnolias have large shiny leaves 30-50 cm long, spreading from stout stems. In a natural setting the Umbrella...

 along the Otter Creek gorge. Visitor activities include camping, boating, and hiking. It is a nesting site for Bald Eagle

Bald Eagle

The Bald Eagle is a bird of prey found in North America. It is the national bird and symbol of the United States of America. This sea eagle has two known sub-species and forms a species pair with the White-tailed Eagle...

s and Osprey

Osprey

The Osprey , sometimes known as the sea hawk or fish eagle, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching more than in length and across the wings...

s.