Mount St. Helens Recovery Project
Work began immediately after the eruption of Mount St. Helens to restore Columbia River navigation, provide 100 year flood protection for the downstream communities located along the Cowlitz...
Managing Instream Flows for Salmonid Spawning Habitat
Detrimental sediment related effects on aquatic habitat for anadromous fisheries include (1) deposition of excessive amounts of fine sediments in spawning gravels, and (2) mobilization...
The Northern Coast of the State of Rio De Janeiro
This work presents a general characterization of a portion of the coastline of the State of Rio de Janeiro, based on observations made between 1988 and 1992, as part of Littoral Rio project....
Depositional Sediment on Intertidal Marshes Near Terrebonne Bay and Atchafalaya Bay, Louisiana
The net transport of inorganic sediment through tidal bayous and dispersal into adjacent marsh systems are considered important contribution to marsh accretion. Marsh habitats are dependent...
Short-Term Water and Suspended-Sediment Fluctuations in a Louisiana Marsh
To determine the timing of and driving forces for sediment suspension and deposition and the effect of impoundment, three self-recording instrument packages were deployed in a section...
Marsh Submergence vs. Marsh Accretion: Interpreting Accretion Deficit Data in Coastal Louisiana
The apparent imbalance between relative sea-level rise and vertical marsh accretion is frequently cited as a major factor in the problem of wetland loss in Louisiana. Rates of relative...
The National Status and Trends Program: Development and Future Directions
NOAA's National Status and Trends Program was initiated in 1983 to provide information on environmental quality related to levels and effects of toxic contaminants in U.S. coastal and...
Status of Contamination in the Coastal United States as Revealed from NS&T Analyses of Surface Sediments
Sediment samples have been collected from more than 300 sites along the coasts of the U.S. since 1984 as part of NOAA's National Status and Trends (NS&T) Program. These samples...
The NS&T Intensive Bioeffects Surveys: Design Strategies and Preliminary Results
Intensive bioeffects surveys are conducted in selected areas where chemical data from the National Status and Trends (NS&T) Program indicate greatest potential for contaminant-related...
Argentine Deltas Morphology
Only two deltas are located along the Argentine coast, both of them at Buenos Aires state. The northern one is the Parana Delta at the Rio de La Plata estuary (34.99' Lat. Sur) and the...
Production and Decomposition of
Production and decomposition rates were calculated for Spartina patens in a mesohaline coastal marsh in Louisiana. Production was estimated to be 800 g m-2 ur-1 during 1991 and 1,696 g...
Crevasses on the Lower Course of the Mississippi River
Before construction of artificial levees, crevasses were a common event along the Mississippi River. They directed sediment out of the main channel and reduced flood stage down river....
Performance of Three Adjacent but Different Beach Nourishment Projects, Pinellas County, Florida
More than 25 million dollars have been spent on three adjacent nourishment projects extending along 10 miles (16 km) of central Pinellas Country on the Gulf Coat of Florida. The three...
Holocene Sedimentation and Coastal Wetlands Response to Rising Sea Level at the Aucilla River Mouth, a Low Energy Coast in the Big Bend Area of Florida
The shallow dip of the Florida carbonate platform results in low wave energy on Florida Big Bend coasts. Therefore sedimentation is dominated by river-and tidal-hydrodynamics near the...
Recovery of Shoreline Ecosystems Following the
High-pressure, hot-water washing was evaluated as one of several countermeasures for cleaning oiled shorelines. This was the primary treatment method for nearly all treated shorelines...
Predicting Impacts of Management Measures on Fragile Coastal Wetlands Using a Predictive Landscape Model
We present a marsh development model that incorporates the hydrodynamics of erosion and sedimentation and meets all conventions proposed for spatial landscape modeling. Wave parameters...
Managing Beach Erosion in Fortaleza, Brazil
The littoral of the metropolitan region of Fortaleza City, State of Ceara in the Northeastern part of Brazil, has suffered significant morphological changes during this century. There...
The Source of Sediments in the Neuse River Estuary: Water Quality Management Implications
Pedological evidence in alluvial floodplains of the fluvial-estuarine transition zone of the Neuse River, North Carolina, shows that very little sediment from the Piedmont headwaters of...
Heavy Metal Accumulation in Subsurface, Estuarine Sediments and Inferences for Anthropogenic Enrichment: N.W. Florida Coast
In an attempt to quantify the degree of contamination and the thickness of the contaminated subsurface sedimentary wedge, approximately 100 samples were extracted from the cores and subjected...
Sedimentation Patterns of a Restored Tidal Wetland
Coyote Slough Lagoon was flooded as part of a local mitigation project in 1986. The design of the restored marsh included peninsulas to break up the local fetch and resulted in the development...
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