{"nrhp_refnum":"90001095","name":"Calf Pasture Pumping Station Complex","other_names":[],"category":"building","location":{"address":"435 Mount Vernon St.","address_restricted":false,"city":"Boston","county":"Suffolk County","state":"MA","lat":42.31338716300007,"lon":-71.03312704699994,"geom_source":"nps_gis"},"listed_date":"1990-08-02","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Community Planning and Development","Engineering","Architecture","Invention"],"significance_levels":["local"],"summary":{"what_it_is":"A sewage pumping station complex on Columbia Point in the Dorchester neighborhood of Boston, built in 1883 with an addition in 1905. It consists of a granite engine house and boiler ell, a gatehouse and filth hoist, and a brick west shaft entrance.","why_significant":"It was Boston's first sewage pumping station and the keystone of the city's first major comprehensive public sewage system. It is also a good example of Richardsonian Romanesque design with Queen Anne influences, by City Architect George Clough, and it is the only remaining 19th-century building on Columbia Point.","narrative":"Overlooking Dorchester Bay from Columbia Point, this granite pumping station was built in 1883 as the heart of Boston's new main drainage system. Designed by City Architect George A. Clough, it housed huge steam-driven Leavitt pumping engines that lifted sewage so it could flow to Moon Island and be released with the outgoing tide. The L-shaped building has rough-cut, rock-faced granite walls, a 26-foot round-arch window, and castellated turrets that vented steam. Its heavy proportions and castle-like profile reflect Richardson's Romanesque influence along with medieval-inspired Queen Anne elements. A wing was added in 1905. A gatehouse with filth hoist and a brick west shaft entrance complete the complex. It was the city's first sewage pumping station and the only 19th-century building left on Columbia Point. Windows were bricked in during 1968, and the roof and ironwork have deteriorated, but the original granite is largely intact.","period_of_significance":"1883-1905","architect_builder":"Clough, George Albert","architectural_style":"Romanesque Revival; Queen Anne (Richardsonian Romanesque)","criteria":["A","C"],"status_note":"Most windows were bricked in during 1968 and the rear coal room has collapsed and been removed. The structure is poorly maintained, with a leaking roof, rusting ironwork and dirty walls, though the original granite is largely intact. It remains in public works use.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:13:03.771307-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/63/7968/63796863/content/electronic-records/rg-079/NPS_MA/90001095.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/90001095/95c428356d-800.webp","url_1600":"https://nationalhistoricalregister.com/media/90001095/95c428356d-1600.webp","licence":"CC BY-SA 4.0","author":"User:Magicpiano","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:BostonMA_CalfPasturePumpingStationComplex.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:BostonMA_CalfPasturePumpingStationComplex.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63796863","wikipedia":"https://en.wikipedia.org/wiki/Calf_Pasture_Pumping_Station_Complex","wikidata":"https://www.wikidata.org/wiki/Q5019572"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/suffolk-county/calf-pasture-pumping-station-complex-90001095/"}