The type of fish use is shown by the color of the line on the distribution map. Use types are briefly defined in the metadata as: Usetype 1= primarily spawning; Usetype 2 = primarily rearing; and usetype 3 = primarily migration. More detailed definitions provided by ODFW in the metadata are as follows:

Defined as areas where eggs are deposited and fertilized, where gravel emergence occurs, and where at least some juvenile development occurs.

Defined as areas outside primary spawning habitats where juvenile fish take up residence during some stage of juvenile development and utilize the area for feeding, shelter, and growth. Some migration also occurs as juvenile and adult fish move between the ocean and spawning grounds.

Defined as areas where juvenile and/or adult fish pass through as they move between the ocean and spawning and rearing areas. While all migratory corridors provide some rearing opportunities, areas with this designation are distinguished by fish moving through fairly quickly making making contributions to juvenile rearing insignificant. 4 Historic. Areas of suitable habitat that fish no longer access and will not access in the foreseeable future without human intervention.

Please address questions or comments to:

Dr. Ralph Garono
Principal Investigator
Earth Design Consultants, Inc.
rgarono@earthdesign.com

Laura Brophy
Principal Investigator
Green Point Consulting
brophyl@peak.org | homepage