Background

In FY99, Project 99-003 was initiated by the WDFW, Oregon Fish and Wildlife Department (ODFW), and the U.S. Fish and Wildlife Service (USFWS).  The Pacific Northwest National Laboratory (PNNL) was asked to participate in the study during FY00.  During 2000-07, PNNL has focused their efforts on 1) investigating the interactions between ground water and surface water near fall chinook and chum salmon spawning areas, 2) providing in season hyporheic temperature data and assisting state agencies with emergence timing estimates, 3) locating and mapping deep-water fall chinook salmon spawning areas, and 4) providing support to WDFW for analysis of stranding data.  

PNNL completed two objectives in FY 2007:

1.  Locate and map chum and fall chinook salmon deepwater spawning areas in the vicinity of Pierce and Ives islands,
2.  Monitor hyporheic upwelling, temperature and water surface elevations in fall Chinook and chum spawning areas near Ives and Pierce islands (and provide real-time water temperature and water surface elevation data from these areas to the fish passage center).  Additonally, hypoheic temperatures were evaluated (using non real-time sensors) in chum spawning areas at Multnomah Falls and I-205.

During FY 2008 PNNL will complete two objectives.

1.  Write a report summarizing results obtained while completing our FY 2007 objectives.
2.  Continue to maintain the real-time temperature and water surface elevation data collection system in the Ives Island area and provide the data hourly to the fish passage center.