{"nrhp_refnum":"87000050","name":"Greenwood Lake Dam","other_names":[],"category":"structure","location":{"address":"5 mi. N of Belleville off PA 305","address_restricted":false,"city":"Belleville","county":"Huntingdon County","state":"PA","lat":40.64877165000007,"lon":-77.75867369799994,"geom_source":"nps_gis"},"listed_date":"1987-05-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Conservation","Politics/Government","Architecture","Social History"],"significance_levels":["national"],"summary":{"what_it_is":"A dam of rustic design built by the Civilian Conservation Corps at Greenwood Furnace State Park near Belleville in Huntingdon County, Pennsylvania. It has a stone-faced concrete core, a spillway at each end, and a rectangular control tower with a gabled roof.","why_significant":"The nomination argues the dam is significant for its association with the Civilian Conservation Corps, a major New Deal relief program, and as an example of the rustic architecture favored by the National Park Service. It is also presented as representative of federal recreation building and of state and federal cooperation on state-owned land. The nomination further links the work to the employment of many jobless young men during the Depression.","narrative":"Built by the Civilian Conservation Corps at Greenwood Furnace State Park near Belleville in Huntingdon County, Pennsylvania, the dam is a concrete structure faced with stone in the rustic manner promoted by the National Park Service. It has a spillway at each end and a rectangular control tower of randomly laid ashlar with a gabled roof and exposed rafters. The park was first developed by the Pennsylvania Department of Forests and Waters as a Class A campground between 1922 and 1925. CCC Camp S-59 was established there in May 1933 and remained active until October 1935, when work on recreational facilities including the dam was carried out. The dam is regarded as an example of federal relief work during the New Deal and of the National Park Service's support for dams in state recreation areas. Its design, which masks modern materials behind natural-looking stone, illustrates the rustic style that shaped many later national and state parks. The nomination is limited to the dam itself, which measures 130 feet on its north and south sides and 25 feet on its east and west ends.","period_of_significance":null,"architect_builder":"Civilian Conservation Corps","architectural_style":"Rustic","criteria":["A","C"],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.074839-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/87000050.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/87000050/b479fed049-800.webp","url_1600":"https://nationalhistoricalregister.com/media/87000050/b479fed049-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Greenwood_Lake_Dam_Huntingdon_Co_PA.jpg\" rel=\"noopener\">Smallbones</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Greenwood_Lake_Dam_Huntingdon_Co_PA.jpg"},"district":{"nrhp_refnum":"89001819","name":"Greenwood Furnace","url":"https://nationalhistoricalregister.com/districts/pennsylvania/greenwood-furnace-89001819/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993067","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q98844751"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/huntingdon-county/greenwood-lake-dam-87000050/"}