{"nrhp_refnum":"82001994","name":"Wamesit Canal-Whipple Mill Industrial Complex","other_names":["Centennial Island"],"category":"district","location":{"address":"576 Lawrence St.","address_restricted":false,"city":"Lowell","county":"Middlesex County","state":"MA","lat":42.63317261250006,"lon":-71.3009017716657,"geom_source":"nps_gis"},"listed_date":"1982-08-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Commerce","Engineering","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"An industrial complex of about four acres at 576 Lawrence Street in southeastern Lowell, Massachusetts, centered on the Wamesit Canal (1821-22) and an island holding the Whipple Powder Mill (ca. 1821) and the Stirling Woolen Mill buildings (1880-1907).","why_significant":"The nomination argues the complex shows a small-scale, independent alternative to Lowell's large corporate canal system. It is tied to Oliver M. Whipple, to engineer Loammi Baldwin, and to trends in industrial architecture. The Whipple Powder Mill is Lowell's oldest industrial structure, and the canal is described as an early nineteenth-century engineering feat.","narrative":"Along the Concord River in southeastern Lowell, this four-acre complex combines a hand-dug waterpower canal with a cluster of mill buildings on an island. Oliver M. Whipple built the Wamesit Canal in 1821-22, consulting engineer Loammi Baldwin, to power his gunpowder works and other small mills. His rubble stone powder mill, built about 1821, is the city's oldest industrial structure; its powder was exported abroad and supplied to American troops in the Mexican War. The island was created when the canal was extended to River Meadow Brook in 1846. Later the Stirling Woolen Mill rose here, with a brick main building of 1880, enlarged in 1896, a carbonizing house of 1907, a storehouse, a powerhouse, and a wooden truss bridge of about 1880. The complex is notable for contrasting with the heavily financed corporate canal system run by the Merrimack River companies, and for offering a separate, comparable waterpower technology.","period_of_significance":null,"architect_builder":"Loammi Baldwin (consulting engineer for the canal); Oliver M. Whipple supervised canal construction","architectural_style":null,"criteria":["A","B","C"],"status_note":"The Whipple Powder Mill is abandoned and in poor condition, open to the elements. The Stirling Mills ceased operation in the mid-1930s and have since had light manufacturing uses; a early twentieth-century powerhouse is in ruins.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:56.099256-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/62/7955/63795562/content/electronic-records/rg-079/NPS_MA/82001994.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/82001994/e4de0a54bf-800.webp","url_1600":"https://nationalhistoricalregister.com/media/82001994/e4de0a54bf-1600.webp","licence":"CC BY-SA 4.0","author":"User:Magicpiano","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:LowellMA_WhippleMillIndustrialComplex.jpg\" rel=\"noopener\">User:Magicpiano</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:LowellMA_WhippleMillIndustrialComplex.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63795562","wikipedia":"https://en.wikipedia.org/wiki/Wamesit_Canal-Whipple_Mill_Industrial_Complex","wikidata":"https://www.wikidata.org/wiki/Q7966927"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/wamesit-canal-whipple-mill-industrial-complex-82001994/"}