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Its primary purpose is flood control and it is the downstream element of the Santa Ana River's flood control system, which is a natural constriction about 30.5 mi (49.1 km) upstream from the ocean. The area upstream from the dam contains 2,255 sq mi (5,840 km 2) of the watershed's 2,650 sq mi (6,900 km 2). The dam's construction was authorized ...
[2] Beginning in the late 20th century, the river engineering discipline has been more focused on repairing hydromodified degradations and accounting for potential systematic response to planned alterations by considering fluvial geomorphology. Fluvial geomorphology is the study of how rivers change their form over time.
Restrictions on projects include: the size of the watershed must be 250,000 acres (1011 km²) or less; no single structure may provide more than 12,500 acre-feet (15,400,000 m 3) of flood water retention; no single dam may provide more than 25,000 acre-feet (31,000,000 m 3) of total capacity; and projects with costs greater than $5 million or ...
Flood control channels are large and empty basins where surface water can flow through but is not retained (except during flooding), or dry channels that run below the street levels of some larger cities, so that if a flash flood occurs the excess water can drain out along these channels into a river or other bodies of water. Flood channels are ...
The Flood Control Act of 1928 (FCA 1928) (70th United States Congress, Sess. 1. Ch. 569, enacted May 15, 1928) authorized the United States Army Corps of Engineers to design and construct projects for the control of floods on the Mississippi River and its tributaries as well as the Sacramento River in California. [1]
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Flood Control Act of 1917; Flood Control Act of 1928, passed in the wake of the Great Mississippi Flood of 1927. FCA 1928 had three important effects. It increased public awareness of advances in flood control theory and practice. It put flood control on par with other major projects of its time with the largest public works appropriation ever ...
The Water Resources Development Act of 1986 (WRDA 1986) is part of Pub. L. 99–662, a series of acts enacted by Congress of the United States on November 17, 1986. [1]WRDA 1986 established cost sharing formulas for the construction of harbors, inland waterway transportation, and flood control projects and established rules therefor.