Salmonid Spawning in Idaho, Geography and Timing

Geography and Timing of Salmonid Spawning in Idaho Idaho Department of Environmental Quality (IDEQ) identified a need to establish when and where spawning occurs for salmonid fishes throughout Idaho. This document provides background information on the development of the geography and timing of salmonids in Idaho. This document expands on the efforts of prior work assembled in Appendix Edition of Watershed Body Assessment Guidance (WBAGII) (Grafe et. al. 2002). The previous literature review produced a series of tables that described general spawning locations along with incubation and emergence periods. In this effort, new information sources were compiled to augment that information and produce a series of GIS maps to describe the location of potential spawning areas in Idaho. A statewide map including associated data tables compatible with ESRI ArcGIS were developed to display the information and facilitate application of water quality standards for salmonid spawning. Geography and Timing of Salmonid Spawning in Idaho (Final Report, 2014) (PDF) Idaho DEQ Water Quality Studies and Reports Idaho DEQ Integrated Report Idaho DEQ Water Quality