{"nrhp_refnum":"79000307","name":"Lock No. 31","other_names":["Lonesome Lock"],"category":"structure","location":{"address":"200 ft. E of Cuyahoga River and approx. 0.5 mi. S of Ohio Turnpike","address_restricted":false,"city":"Peninsula","county":"Summit County","state":"OH","lat":41.25184361000004,"lon":-81.54601149899997,"geom_source":"nps_gis"},"listed_date":"1979-12-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Engineering","Transportation","Exploration/Settlement"],"significance_levels":["state"],"summary":{"what_it_is":"Lock No. 31, known as \"Lonesome Lock,\" is a canal lock on the Ohio & Erie Canal in Boston Township near Peninsula, Summit County, Ohio, built 1825-1827, about 100 feet east of the Cuyahoga River.","why_significant":"The lock is a surviving piece of the Ohio & Erie Canal, which reviewers described as important in regional development. It is a standard mitered-gate lock in a secluded stretch of canal between the canal villages of Boston and Peninsula. The form lists it under historic civil engineering landmark surveys.","narrative":"Lock No. 31, nicknamed \"Lonesome Lock,\" is a canal lock on the Ohio & Erie Canal in Boston Township near Peninsula, Summit County, Ohio. Built between 1825 and 1827, it sits about 100 feet east of the Cuyahoga River in a secluded stretch between the former canal villages of Boston and Peninsula. The lock is a standard mitered-gate type with a chamber roughly 15 feet wide, built of cut stone and load-bearing masonry, and partly covered with concrete applied around 1905. Both gates are gone, though water remains in the chamber, and traces of a probable spillway lie close by to the southeast. Visitors can reach it only on foot after a considerable hike, and the main sound is Ohio Turnpike traffic half a mile north. Nearby Stumpy Basin, once a canal boat turnaround, is now used by Kent State University as an outdoor classroom for ecology students. The lock was listed as part of the Ohio & Erie Canal's regional importance.","period_of_significance":"1825-1827","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Both gates are missing and there is water in the lock chamber. Condition is listed as good; the site is state-owned and open to the public, though reachable only on foot.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:12.185261-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/79000307.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79000307/faee358848-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79000307/faee358848-1600.webp","licence":"Public domain","author":"National Park Service","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Lock_31_Lonesome_Lock_NPS.jpg\" rel=\"noopener\">National Park Service</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Lock_31_Lonesome_Lock_NPS.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71986310","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q97994444"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/summit-county/lock-no-31-79000307/"}