
The Rio Grande valley north of the county line anchors this survey, showing a highly engineered agricultural landscape where the river's flow is managed by the Percha Dam and diverted into an extensive network of irrigation canals. Small communities like Arrey, Derry, and Garfield are linked by the Arrey Canal and Garfield Canal, with specialized infrastructure such as the Garfield Flume and a Siphon facilitating water movement across the varied terrain. The map records the local social fabric through landmarks like the San Isidro Sch, the Church of God, and a Cem near the riverbank.
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This is the sole edition of this map. No revisions or reprints were ever made.
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