Columbia River Estuary Data Development Program

CREDDP Studies

Columbia Estuary Data Development Program - Tidal Marsh Plant Production in the Columbia River Estuary

The Emergent Plant Primary Production Work Unit of the Columbia River Estuary Data Development Program (CREDDP) describes the species composition, standing crop, and primary production dynamics of the tidal marsh vegetation found within the estuary. An estuary-wide field reconnaissance conducted in October 1979 confirmed the floristic diversity of Columbia River Es

Columbia Estuary Data Development Program - Marine Mammals of the Columbia River Estuary

The Marine Mammal Investigations team of the Washington Game Department began an extensive research program in 1980 to document marine mammal populations of the region and document their relationship to fisheries of the area. The overall research program has received funding from multiple sources, including: National Marine Fisheries Service, the U.S.

Columbia Estuary Data Development Program - Hydrodynamic Modeling of the Columbia River Estuary

The research reported in the following two volumes was funded primarily by CREDDP in two parts. The first part of the study employed the U. S. Army Corps of Engineers Waterways Experiment Station Implicit Flooding Model (WIFM). Thanks are due to Lee Butler of WES for supplying the original code for WIFM.

Columbia Estuary Data Development Program - Guide to the Use of CREDDP Information For Environmental Assessments

The Columbia River Estuary Data Development Program (CREDDP), a federally-funded research program, began in 1978 and was completed in 1984. The purpose of the program was to provide a foundation of scientific knowledge about the estuary and to provide information useful in managing land and water resources through the public planning and permitting processes.