Transforming Crissy Field
The Presidio's Crissy Field in San Francisco has been converted from a military airfield and industrial storage yard into a magnificent urban waterfront park. Thanks to a...
Turbulence, Bottom Boundary Conditions, and Sediment Transport in a Shallow Water Habitat
Field experiments were designed to explore the effects of vegetation on the hydrodynamics and sediment transport in Franks Tract, a shallow water habitat in the Sacramento-San Joaquin...
Measuring Key Physical Processes in a California Lagoon
A focused data collection program was completed in support of a U.S. Army Corps of Engineers feasibility study of restoration alternatives for protecting and managing the habitat in Bolinas...
Blocking the Tide
The city of Venice is in peril as a result of increased tidal flooding, and a proposed system of movable gates offers the greatest promise of safeguarding the city's future....
Scour Monitoring at Johns Pass and Nassau Sound, Florida
Scour monitoring instruments were installed on two bridges spanning tidal inlets in Florida as part of a research project to develop scour instrumentation. Previous prototype installations...
Applicability of Scour Equations in Tidal Areas
Bridge scour and waterway instability in the coastal region where waterways are subjected to tidal flow can be subjected to mass density stratification, water salinity, sedimentation...
A Corps Chief Looks at Rising Tide
A former head of the U.S. Army corps of Engineers reviews a book about the Great Flood of 1927. The book, entitled, Rising Tide: The Great Mississippi Flood of 1927 and How it Changed...
Hydraulic Studies for a Large Wetland
Coastal wetlands are highly biologically productive and provide spawning and feeding habitats for many aquatic organisms. As has happened to freshwater wetlands, about half of the tidal...
Santa Ana River Salt Marsh Restoration: Orange County, California, U.S.A.
As part of the All-River Plan of the Santa Aria River, the 92 acre Santa Ana River Marsh (Marsh) was constructed at the Pacific Ocean outlet in Orange County, California. This project...
Mobile Bay Scour Analysis for Mobile and Baldwin Counties, Alabama
Scour analyses were prepared for ten bridges and causeways in and around Mobile Bay on the Gulf Coast of Alabama. Interactions between riverine floods on the Mobile River and tidal storm...
Applicability of Scour Equations in Tidal Areas
Bridge scour and waterway instability in the coastal region where waterways are subjected to tidal flow can be subjected to mass density stratification, water salinity, sedimentation (littoral...
Modeling the Impact of Uncertainty in Spatial Variability of Estuarine Boundary Conditions
Multi-dimensional numerical estuarine models that consider baroclinic forcing require the specification of both the water surface and the water density (salinity and temperature) at the...
Suspended-Solids Flux at a Shallow-Water Site in South San Francisco Bay, California
Time series measurements of current velocity and suspended solids-concentration (SSC) made during December 1993 and March 1994 at a shallow-water site in South San Francisco Bay were used...
Accuracy of a 3D Hydrodynamic Model Verification due to the Relative Magnitude of Forcing Functions
An investigation of relative magnitude of forcing functions in a 3D time-varying hydrodynamic model verification has been performed by identifying some extreme forcing events for an estuarine...
Wetland Restoration in Southern North Sea Coastal Areas: The Experience of Britain and The Netherlands
Over the past 500 years, extensive reclamation of tidal wetland areas in the lowlands surrounding the Southern North Sea has taken place. In the Netherlands, reclamation has been an essential...
Observations of Tidal Circulation in Mamala Bay, Hawaii
A comprehensive measurement program, designed to study circulation processes and support hydrodynamic modeling, has been carried out in Mamala Bay on the south coast of the Island of Oahu,...
Sedimentation Dynamics of Tidal Inlets
Tidal inlets are very dynamic systems subject to continuous morphological changes under the action of tides, waves and transported sediments. Although flow and sediment dynamics are interactive,...
Balancing on the Tides
Using a system of pivoting, barge-mounted towers, a Virginia contractor floated bridge segments into position 120 ft above the York River, reducing costs and cutting erection time by nearly...
Comparison of 2D and 3D Models for Computing Shallow Water Tides in a Friction-Dominated Tidal Embayment
The friction related overtide generating mechanisms in 2D and 3D models are compared by investigating shallow water tides in the Bight of Abaco. The 2D and 3D forms of the circulation...
Dredging Impacts on Delaware Estuary Tides
This study summarizes historic dredging activities and historic tidal trends in the Delaware Estuary. Since 1910, large-scale dredging and maintenance projects in the Delaware Estuary...
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