By Bruce L. McCartney

''Inland navigation: Locks, Dams,and Channels (ASCE Manuals and stories on Engineering perform No. 94)'' was once ready by means of a job committee of the Waterways committee, that is a part of the Waterways, Ports, Coastal, and Ocean department. The handbook offers info on making plans, layout, development, and operation of the USA waterways utilized by barge site visitors. many of the info comes from layout standards and greater than a hundred years of expertise of the U.S. military Corps of Engineers. The Corps has equipped greater than 220 lock and dam tasks on US waterways and keeps greater than 25,000 miles of inland navigation channels. This guide additionally comprises a listing of the Corps lock and Dam tasks and six case histories

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Inland navigation : locks, dams, and channels

''Inland navigation: Locks, Dams,and Channels (ASCE Manuals and experiences on Engineering perform No. 94)'' used to be ready through a job committee of the Waterways committee, that's a part of the Waterways, Ports, Coastal, and Ocean department. The handbook offers info on making plans, layout, building, and operation of the united states waterways utilized by barge site visitors.

Additional resources for Inland navigation : locks, dams, and channels

Example text

Lesser project flows are commonly expressed with respect to their duration—the percentage of time that a particular discharge is equaled or exceeded. Discharge-duration curves are determined from the total period of flow data records. These records are also used to determine existing minimum flow conditions. 1 General Hydraulic studies for navigation dam design generally cover two distinct phases. One phase is establishing the stage-discharge relationship over the entire area affected by the proposed project under both existing and postproject conditions.

Common problems associated with high-head dams are aggradation in the upper pool followed by degradation of the downstream channel. Low-head dams generally follow some- 22 INLAND NAVIGATION what different trends, since they are designed to allow open-river conditions during the high-flow periods when the majority of sediment is transported. Special care must be taken to ensure that open-river flows occur frequently enough so that the existing sediment transport regime is not significantly altered.

The National Weather Service has identified the Probable Maximum Storm (PMS) upon which the PMF is based for all regions of the US. The precipitation data for these storms are contained in a series of regionally oriented Hydrometeorological Reports (HMRs). 2 Standard Project Flood (SPF). The SPF is runoff resulting from the Standard Project Storm (SPS)—the rainfall representing the most severe storm that is considered reasonably characteristic of the region in which the drainage basin is located.

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