The following memorandum is intended to provide updates on two elements of work that has been done to estimate the potential for anadromous fish production above the site of Iron Gate Dam (IGD). These elements include:
? Preliminary estimates of the historic potential for chinook production above Upper Klamath Lake (UKL) that were included in a technical memo I submitted to you in April 2004.
? Estimates of historic and recently suitable habitat for anadromous fish in streams within the drainage basin above IGD.