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The initial setting operation includes fixing the theodolite on a tripod, along with approximate levelling and centering over the station mark.For setting up the instrument, the tripod is placed over the station with its legs widely spread so that the centre of the tripod head lies above the station point and its head approximately level (by eye estimation).
Point State Park (locally known as The Point) is a Pennsylvania state park which is located on 36 acres (150,000 m 2) in Downtown Pittsburgh, Allegheny County, Pennsylvania, US, at the confluence of the Allegheny and Monongahela rivers, forming the Ohio River.
Following is a list of dams and reservoirs in Pennsylvania. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
Ryerson Station State Park is a 1,164-acre (471 ha) Pennsylvania state park in Richhill Township, Greene County, Pennsylvania in the United States. It was previously home to Ronald J. Duke Lake, a 52-acre (21 ha) artificial lake on the North Fork of the Dunkard Fork of Wheeling Creek, that was constructed in 1960, but drained in 2005 due to structural concerns about the dam.
In 1908, a single splash dam in north-central Pennsylvania floated 8,000,000 board feet (18,900 m 3) in one log drive. [2] Nowadays in Ukrainian Carpathians. Log drives lasted four to six days in northern Pennsylvania. A series of arks (boats specially built for the drive) floated down the creek behind the logs. Typically one boat was the ...
The Pennsylvania Department of Environmental Protection (DEP) is the agency in the U.S. state of Pennsylvania responsible for protecting and preserving the land, air, water, and public health through enforcement of the state's environmental laws. [1]
Gov. Tom Wolf announced on Twitter Tuesday three new additions to Pennsylvania’s 121 state parks. ... This National Park Service site in Pennsylvania was the 15th most popular in the US in 2021
Sinnemahoning State Park is a 1,910-acre (773 ha) Pennsylvania state park in Grove Township, Cameron County and Wharton Township, Potter County, Pennsylvania, in the United States. The park is surrounded by Elk State Forest and is mountainous with deep valleys. The park is home to the rarely seen elk and bald eagle.