{"nrhp_refnum":"87000046","name":"Halfway Lake Dam","other_names":[],"category":"structure","location":{"address":"16 mi. W of Lewisburg on PA 191","address_restricted":false,"city":"Lewisburg","county":"Union County","state":"PA","lat":40.99003443700008,"lon":-77.18943450199998,"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 reinforced concrete dam faced with rusticated stone, forming Halfway Lake in R. B. Winter State Park near Lewisburg, Union County, Pennsylvania. It was built by the Civilian Conservation Corps (CCC Camp S-67) in 1933.","why_significant":"The nomination argues the dam is significant as the first concrete and stone dam built by the CCC, a design precedent for later CCC dams. It is associated with Emergency Conservation Work under the New Deal and reflects the rustic architectural philosophy promoted by the National Park Service. It is also cited for its recreational purpose and for its representation of state-federal cooperation on state-owned land.","narrative":"Built in 1933 by Civilian Conservation Corps Camp S-67, the reinforced concrete dam across Halfway Run impounds Halfway Lake, the centre of recreation in what is now R. B. Winter State Park in Union County. Its face is clad in rusticated stone, a treatment chosen to give the structure the natural, pioneer-inspired appearance promoted by the National Park Service for park buildings. It was one of the first projects undertaken by the camp and was the first concrete and stone dam the CCC constructed, a design that set a precedent for many later CCC dams. The dam illustrates the New Deal's Depression-era relief work, which employed large numbers of young men, and the cooperation between state and federal government on state-owned property. For roughly fifty years it has served as a recreational facility, and it reflects the federal effort to build outdoor recreation sites across the country.","period_of_significance":"1933-1942","architect_builder":"CCC Camp S-67","architectural_style":"Rustic","criteria":["A","C"],"status_note":"Used as a recreational facility for approximately fifty years; the form describes it as the prime focus of the park's recreational facilities.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:34.536454-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/87000046.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/87000046/30acfe9b7c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/87000046/30acfe9b7c-1600.webp","licence":"CC BY-SA 3.0","author":"Ruhrfisch","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:R_B_Winter_State_Park_Dam.jpg\" rel=\"noopener\">Ruhrfisch</a>, <a href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:R_B_Winter_State_Park_Dam.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993899","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q98844075"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/union-county/halfway-lake-dam-87000046/"}