{"nrhp_refnum":"83004462","name":"Houston Heights Waterworks Reservoir","other_names":[],"category":"building","location":{"address":"W. 20 and Nicolson Sts.","address_restricted":false,"city":"Houston","county":"Harris County","state":"TX","lat":29.804347007000047,"lon":-95.40666149299994,"geom_source":"nps_gis"},"listed_date":"1983-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Community Planning and Development"],"significance_levels":["local"],"summary":{"what_it_is":"A one-story, square, brown-brick reservoir with rounded corners at West 20th and Nicolson Streets in Houston, Harris County, Texas, built 1893-95 for the Houston Heights waterworks.","why_significant":"It is the only remaining original structure from the Heights waterworks. O. M. Carter developed it to provide water service for residents moving into his new town. The form cites community planning as its area of significance at the local level.","narrative":"This one-story reservoir at West 20th and Nicolson Streets in Houston was built between 1893 and 1895 as part of the Houston Heights waterworks. It is a square structure of brown brick with rounded corners, banded by stringcourses of gray concrete at the base and about six feet above ground, and of tan brick near the top. Each side carries two blind windows, and the flat roof is covered with grass and sod. It occupies a one-acre corner lot between railroad tracks and a commercial area. The reservoir is the only original structure remaining from the Heights waterworks. O. M. Carter developed it to supply water to residents moving into his new town, which makes it a physical reminder of the community's planned beginnings. Accounts say the grounds around it were once kept like a park. It is recorded as being in good condition and is still used as a reservoir, and its significance is rated as local in the area of community planning.","period_of_significance":"1800-1899","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Described as in good condition and still used as a reservoir; site is original, with no alterations reported in one record, while an earlier record notes blocked-up openings.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:18.42092-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/67/9694/40969467/content/electronic-records/rg-079/NPS_TX/83004462.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83004462/f4852bd94e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83004462/f4852bd94e-1600.webp","licence":"CC BY 3.0","author":"Ed Uthman, Houston, Texas, USA","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Houston_Heights_Waterworks_Reservoir_(HDR).jpg\" rel=\"noopener\">Ed Uthman, Houston, Texas, USA</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Houston_Heights_Waterworks_Reservoir_(HDR).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40969467","wikipedia":"https://en.wikipedia.org/wiki/Houston_Heights_Waterworks_Reservoir","wikidata":"https://www.wikidata.org/wiki/Q19880350"},"indexable":true,"url":"https://nationalhistoricalregister.com/texas/harris-county/houston-heights-waterworks-reservoir-83004462/"}