M ODESTO I RRIGATION D ISTRICT | T URLOCK I RRIGATION D ISTRICT FERC PROJECT N O Don Pedro Project Relicensing

Instream Flow Studies: Current Procedural Background  July 16, 2009 FERC Order – IFIM and Water Temperature Modeling Study Plan  Draft IFIM Study Plan provided to Agencies September 3, 2009  Agency comments addressed  October 14, 2009 – Districts filed Final Study Plan with FERC  Agency Follow-Up Comments  May 2, 2010 FERC Order – Study Plan Implementation  Included staff conclusions regarding methodology and test flows  July 21, 2010 FERC Order – Revised Implementation Schedule  December 11, 2010 and July 31, 2011 Progress Reports  April 28, 2012 Final Report Deadline April 20, 2011 Don Pedro Project Relicensing, FERC Project No

Instream Flow Studies: Historical 1981 CDFG IFIM Study  19 transects over primary spawning Reach RM  Flow simulation range of cfs  Site-specific HSC for spawning Chinook salmon 1991 TID/MID Re-Analysis of CDFG Data  Chinook spawning HSC revised, fry and juvenile HSC from literature  O. mykiss fry and juvenile HSC from literature 1995 USFWS IFIM Study  25 transects over RM (23 used)  Flow simulation range of 25-1,200 cfs  Site-specific HSC for Chinook spawning (1991) and fry (1988), with Stanislaus data used for juveniles (1989)  O. mykiss fry and juvenile HSC from literature April 20, 2011 Don Pedro Project Relicensing, FERC Project No

Instream Flow Studies 2011 IFIM Study  40 transects over RM  Flow simulation range of 150-1,200 cfs  Use site-specific HSC for spawning Chinook salmon  Existing literature-based HSC for fry/juvenile Chinook salmon and O. mykiss, with site-specific verification  Effective WUA predictions based on suitable temperatures 2011 High Flow Study  3 sites selected (RM 48.5, RM 48.0, RM 45) for detailed survey  Flow simulation range of 1,000-5,000 cfs  2D modeling of velocity and depth on floodplain  Literature based HSC for juvenile salmon and predators April 20, 2011 Don Pedro Project Relicensing, FERC Project No

Instream Flow Studies April 20, 2011 Don Pedro Project Relicensing, FERC Project No In-Channel IFIM Study Progress Milestones Study Planning and Site SelectionCompleted Aug and Oct 2010 Revised Mesohabitat MappingCompleted September 16, 2010 Cross Section PlacementCompleted November 18, 2010 HSC ConsultationIn progress (essentially complete) Field Data Collection (Hydraulic)July – September 2011* Field Data Collection (Fry and Juvenile HSC)February – June 2012* PHABSIM Modeling/AnalysisSeptember – December 2011 Over-Bank High Flow Study Progress Milestones High Flow Stage Discharge Data CollectionJanuary – June D Hydraulic Modeling/AnalysisJuly 2011 – December 2011 Draft Report for Resource Agency ReviewFebruary 2012 Final Report to CommissionApril 28, 2012