Author: Galen Joseph
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category : Banks (Oceanography)
Languages : en
Pages : 326

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Author: United States. Army. Corps of Engineers
Publisher:
ISBN:
Category : Harbors
Languages : en
Pages :

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Author: Caroline Macdonald Pomeroy
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 46

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 472

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This report was prepared in response to Section 811 of the Water Resources Development Act of 1986 (WRDA 86) which calls for a study of long-term solutions to the shoaling problems at Santa Cruz Harbor in the interest of navigation. Hazardous navigation conditions at the entrance to Santa Cruz Harbor are the result of: (1) wave activity in the entrance caused by waves breaking over shallow depths adjacent to the entrance channel; and, (2) shoals in the entrance channel which require frequent dredging and also contribute to breaking waves. These conditions are the result of relatively high littoral transport and the harbor's small tidal prism which is insufficient in volume to naturally scour the jettied entrance. The purpose of this study was to evaluate alternatives over and above the without project condition designed to supplement Port District activities. Unfortunately, none of the potential solution studied was found to be economically justified due to the relatively low magnitude of navigation benefits that would be generated.

Author:
Publisher:
ISBN:
Category : Water quality
Languages : en
Pages : 376

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Author: United States. Army. Corps of Engineers. San Francisco District
Publisher:
ISBN:
Category : Banks (Oceanography)
Languages : en
Pages :

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Author: MOFFATT AND NICHOL INC LONG BEACH CA.
Publisher:
ISBN:
Category :
Languages : en
Pages : 291

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This study was made to define the littoral processes and resultant shoaling mechanism of Santa Cruz Harbor entrance channel and to develop and evaluate alternative methods of mitigating the shoaling effects. During the winter months, the Santa Cruz Harbor entrance channel has shoaled almost completely since its construction in 1962. The channel was maintained by annual dredging in the late winter or early spring until 1977 when the dredging procedure was changed. The study involved analysis of shoaling mechanisms and dredging procedures. A new two-year interim dredging procedure was developed for the 1977 through 1979 winter seasons. The concept was to dredge the channel periodically in phases each winter and thereby keep the harbor open to navigation most of the time. A considerable quantity of littoral drift is believed to bypass the harbor offshore by natural processes. This quantity is estimated to range from 175,000 cubic yards per year to 375,000 cubic yards per year, varying with the wave climate and dredging procedures. Sixteen alternative solutions that could mitigate channel shoaling were developed and analyzed. They were classified into bypassing, channel-maintenance and structural categories.

Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 732

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Author: United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher:
ISBN:
Category : Law
Languages : en
Pages : 726

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