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Title: LaCueva Arroyo Inlet, Albuquerque, New Mexico
Authors: United States. Army. Corps of Engineers. Albuquerque District.
Tate, Charles H.
Keywords: Flood control
Channel junctions
High-velocity flow
Diversion structures
LaCueva Arroyo Inlet
Albuquerque (N.M.)
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; HL-89-6.
Description: Miscellaneous Paper
Abstract: The LaCueva-Arroyo inlet collects the runoff in the LaCueva Arroyo basin and merges the flow into the North Diversion Structure, which diverts upland runoff around Albuquerque, NM. Built in the late 1960, the LaCueva Arroyo Inlet was designed to pass 5,500 cfs. Recent development in the Albuquerque area has generated a proposal to divert 2,000 cfs from a neighboring basin into the LaCueva Arroyo basin, increasing the peak flow to 7,500 cfs. Also due to this development, it has been proposed to remove the existing converging inlet section from the LaCueva Arroyo Inlet and extend the concrete channel several thousand feet upstream. Either of these proposals would change the flow conditions entering the LaCueva Arroyo Inlet. An existing 1:40-scale model of the North Diversion Structure was extended to include the LaCueva Arroyo Inlet after numerical simulations were unable to reproduce the flow conditions at the inlet. Combinations of the as-built conditions and proposed changes were tested in the physical model to determine the flow conditions for the as-built design at design flows and the changes in the flow conditions due to the proposed changes. In the as-built structure with the design flow in the LaCueva Arroyo Inlet, flow intermittently overtopped the left berm of the North Diversion Structure due to a standing wave that formed in the junction of the LaCueva Arroyo Inlet channel and the North Diversion Structure. A vertical wall 120 ft long and 3 ft high located on top of the left berm was sufficient to keep the flow in the North Diversion Structure. The extension of the LaCueva Arroyo Inlet channel had no noticeable effect on the flow conditions due to the steeper slope in the existing portion of the channel. The addition of 2,000 cfs caused the flow to consistently overtop the left berm of the North Diversion Structure at approximately the same location. However, the same vertical wall was adequate to contain the flow in the North Diversion Structure.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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