Espada Aqueduct (San Antonio, Texas)

            Historical marker for the Espada Aqueduct in San Antonio, Texas.  The marker reads:

“Mission San Francisco de la Espada Dam, Ditch and Aqueduct - Since water was vital to the permanency of San Francisco De La Espada Mission, the Franciscan missionaries and their Indian followers built a dam, irrigation ditch, and aqueduct. The 270-foot dam, an engineering feat which "curved the wrong way", was built across the San Antonio River. Lime salts in the water gradually cemented the dam's layers of brush, gravel, and rocks. Water transported by Espada ditch crossed Piedras creek by way of the Espada aqueduct. This, the only such structure in the United States, was built from 1740 to 1745. 

The alluvial valley produced crops of maize, beans, melons, calabashes and cotton; however, deterioration had set in at Espada before its secularization in 1794. Even so the dam, ditch, and aqueduct survived a century of Indian attacks, ravaging floods, and controversy before the Espada Ditch Company repaired the dam in 1895.
 
In 1941, to help insure the preservation of this singular colonial aqueduct, the San Antonio Conservation Society purchased the adjacent lands. Further assurance came in 1965, when the United States Department of Interior designated Espada aqueduct as a registered national historic landmark. (1970)”

Some rights reserved

Taken in: United States / Texas / Bergs Mill (show map)

Taken on: December 30, 2020

Tags:

Historic Canal

Historic Aqueduct

Acequias of San Antonio

San Antonio

Bexar County

Texas

Civil Engineering Landmark

ASCE

ASCE Landmark

NHL

National Historic Landmark

NRHP

National Register of Historic Places

HAER

Historic American Engineering Record

NRHP 66er

NRHP 1966 « less

Sets appears in: • Civil Engineering Landmarks • Water Supply more » • Texas • Texas Roads, Bridges, Towers, etc. • HAER • National Historic Landmarks • NRHP 66er • NRHP Listed Roads, Bridges, Tunnels, Towers, etc. « less

Camera: Nikon D7500, f/5.6, 1/250 sec, 38mm (=57mm), ISO 220 (more info) (hide info)

Camera:	Nikon D7500
Aperture:	f/5.6
Exposure Time:	0.004 sec (1/250)
Focal Length:	38mm (35mm equivalent: 57mm)
ISO:	220
Exposure Bias:	0 EV
Flash:	Auto, Did not fire
Exposure Program:	Not Defined
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	sRGB
Software:	Ver.1.10
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