A GIS dataset delineating Oregon Plan Core Areas as designated in the Original
Draft Oregon Plan dated August 6, 1996.
The purpose of the dataset is to illustrate and quantify the Core Areas.
Field evaluations of existing habitat suitability index (HSI) models
for spawning adults, eggs, and larvae of American shad (Alosa
sapidissima) were conducted in 1990-1992; initial models for juveniles ...