Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ...of Algodones, where the water is first used for irrigation. Its total length is 4.8 miles, only the lower 1.8 miles of ditch being available for irrigation. At the tail this ditch passes under the Santa Ana ditch through an ordinary box culvert and discharges its surplus waters into the Bernalillo ditch. The Algodones ditch, as gaged 600 feet below the head, carries 9.9 cubic feet per second. Its sectional area is 7.8 square feet; mean depth, 0.82 foot; mean velocity, 1.27 feet; maximum sectional velocity, 1.44 feet; and its surface width, 9.5 feet at full capacity. The mean velocity is such that it does not prevent the growth of weeds or the deposition of silt, the latter being about 12 inches in depth annually. The Santa Ana ditch is controlled wholly by the Indians of that pueblo, and is used to irrigate their lands, which extend opposite and for some distance below the town of Algodones. This ditch has no head-works of any description, a cut being made in the bank of the river and the water drawn off. At a point 300 feet below the head it has a surface width of 8 feet; sectional area, 7.8 square feet; mean depth, 0.98 foot; mean velocity, 2.69 feet; maximum sectional velocity, 2.90 feet, and a discharge of 21 cubic feet per second. Although this section was in light sand, there was no scour nor was there any deposit of silt. At a distance of 3 miles below the head and immediately above the point from which water is first drawn for irrigation the ditch was found to have a width of 7 feet; sectional area, 8 square feet; mean depth, 1.14 feet; mean velocity, 1.64 feet; maximum sectional velocity, 1.93 feet, and a discharge of 13.1 cubic feet per second. At this point there was found a deposit of silt where the sectional velocity fell below 1.80 feet per se...
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