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Lake Jean is a lake in Luzerne County and Sullivan County, in Pennsylvania, in the United States. It has a surface area of approximately and is situated in Colley Township, Sullivan County and Fairmount Township, Luzerne County. The lake's main inflow is the outlet of Ganoga Lake. Lake Jean is fairly shallow, with an average depth of . It is in the watershed of Fishing Creek. The main rock formations in the lake's watershed include Burgoon Sandstone and the Mauch Chunk Formation. The lake is dammed by the Lake Jean Dam and is owned by the Pennsylvania Department of Conservation and Natural Resources. Lake Jean historically had a low pH due to impairment by atmospheric deposition. The lake has become less acidic, but continues to be impaired by mercury. Its watershed has an area of , including the lake itself. The majority of the watershed is forested, though there are a few other land uses. The lake was named by Colonel R. Bruce Ricketts in 1905 after Jean Holberton Ricketts, his eldest daughter. A new dam was created for it in the 1950s. In 2015, the lake is being partially drained so that repair work can be done on the control tower of the Lake Jean Dam. Lake Jean is stocked with trout and contains various species of warmwater game fish and panfish. The large tracts of forest in the lake's watershed are mainly deciduous, but there is some coniferous forest. The lake is listed on the Luzerne County Natural Areas Inventory. Its main uses are recreation and fishing and it is one of the common destinations of visitors to Ricketts Glen State Park, in which it is located. ==Geography== The main outflow of Lake Jean is an unnamed tributary of Kitchen Creek.〔 Its inflows include unofficially named streams such as "Beaver Tributary" and "Ganoga Tributary", as well as direct drainage.〔 Both the lake's main inflow and its main outflow are around wide and deep.〔 The elevation of the lake is above sea level. The lake has a highly irregular shape. Its maximum length is and its maximum width is .〔 The largest inflow to Lake Jean is the outlet of Ganoga Lake, which is northwest of Lake Jean. Drainage from a tract of wetland also flows into the lake.〔 There are several coves and inlets on the lake, especially on its western side, where there are also some wetlands. The lake also has a few islands.〔 The surrounding land rises to at most above the lake.〔 Lake Jean is relatively shallow, with an average depth of . Some of the deepest parts of the lake are only deep, though it can reach up to in depth.〔 The lake has an area of and a volume of 486 million gallons.〔〔 Lake Jean is entirely within the United States Geological Survey quadrangle of Red Rock.〔 The village of Red Rock is located to the south of the lake. The lake is located within Ricketts Glen State Park. It is in the northernmost part of the watershed of Fishing Creek.〔 The main rock formation in the watershed of Lake Jean is the Burgoon Sandstone, which contains interbedded gray shale, conglomerate, and mudstone. However, a small patch of the Mauch Chunk Formation occurs in the northern part of the watershed. The only soil in the watershed is the Wellsboro-Oquaga-Morris Association. However, the Lackawanna-Arnot-Morris Association occurs near the watershed's southwestern border.〔 Lake Jean is dammed by the earthen Lake Jean Dam, which is high and long.〔〔 As of 1980, the dam and its eastern and western dikes can handle 73 percent of the probable maximum flood without overtopping.〔 The lake is owned by the Pennsylvania Department of Conservation and Natural Resources. Lake Jean has a beach with a length of . It is open from late May to mid September. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lake Jean」の詳細全文を読む スポンサード リンク
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