| 词条 | Spanish Dikes |
| 释义 |
| name = Spanish Dikes | nrhp_type = | image = | caption = | location=Northeast of Agana Springs, Hagåtña | nearest_city= Agana, Guam | coordinates = {{coord|13|27|48|N|144|45|57|E|display=inline,title}} | locmapin = Guam | architect OR builder = | architecture = | added = November 19, 1974 | area = {{convert|3|acre}} | governing_body = Private | refnum = 74002303[1] }} The Spanish Dikes, located northeast of Agana Springs, Hagåtña, Guam, are historic 19th-century water control structures that were listed on the National Register of Historic Places in 1974.[1] There are two sections of dikes in a swampy region outside Hagåtña. Both sections are constructed of mortared limestone, with buttresses for support, and openings at the top that act as sluiceways where water flow could be controlled. One section is about {{convert|70|m|ft}} long, varying in thickness from {{convert|0.3|to|1|m|ft}}, while the other is {{convert|22.5|m|ft}} long. The construction dates of these dikes is unknown, but similar structures were likely to exist in the area in the 1830s, and in the 1870s the area was being used for cultivation of rice by Filipino penal labor in an effort to solve the island's long-standing issues with insufficient food production.[2] See also
References1. ^1 {{NRISref|version=2010a}} {{National Register of Historic Places}}{{Guam-NRHP-stub}}2. ^{{cite web|url={{NRHP url|id=74002303}} |title=National Register of Historic Places Inventory/Nomination: Spanish Dikes |author=Guam Inventory Team, Bernice P. Bishop Museum |date=August 1974 |publisher=National Park Service}} and {{NRHP url|id=74002303|title=accompanying two photos from 1974|photos=y}} 3 : Buildings and structures on the National Register of Historic Places in Guam|Dikes in the United States|1800s establishments in the Spanish East Indies |
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