Early Information Development: Fish Connectivity at the Boundary Hydroelectric Project Boundary Hydroelectric Project (FERC No. 2144) Prepared for: Seattle City Light Seattle, Washington Prepared by: R2 Resource Consultants, Inc. Redmond, Washington November 2006 EARLY INFORMATION DEVELOPMENT: FISH CONNECTIVITY TABLE OF CONTENTS 1 Introduction.......................................................................................................................... 1-1 1.1. Project Description............................................................................................. 1-2 2 Potential Habitat Connectivity ........................................................................................... 2-1 2.1. Adfluvial Fish Habitat within Boundary Reservoir............................................ 2-4 2.2. Status of Fish Passage and Adfluvial Fish Habitat at other Pend Oreille River Projects ............................................................................................................... 2-8 2.2.1. Waneta .................................................................................................. 2-8 2.2.2. Seven Mile............................................................................................ 2-8 2.2.3. Box Canyon........................................................................................ 2-10 2.2.4. Albeni Falls......................................................................................... 2-12 2.2.5. Cabinet Gorge and Noxon Rapids ...................................................... 2-13 2.3. Summary of Potential Habitat Connectivity..................................................... 2-14 3 Target Fish Species .............................................................................................................. 3-1 3.1. Seasonal Fish Distribution and Abundance........................................................ 3-1 3.1.1. Bull Trout.............................................................................................. 3-1 3.1.2. Westslope Cutthroat Trout.................................................................... 3-2 3.1.3. Mountain Whitefish .............................................................................. 3-4 3.1.4. Other Species........................................................................................ 3-6 3.2. Biological Factors............................................................................................... 3-7 3.2.1. Fish Size................................................................................................ 3-7 3.2.2. Fish Distribution................................................................................... 3-8 3.2.3. Swimming Capacity.............................................................................. 3-9 4 Entrainment: Physical Risk Factors .................................................................................. 4-1 4.1. Conditions Potentially Damaging to Fish........................................................... 4-1 4.2. Turbines .............................................................................................................. 4-2 4.3. Spillways............................................................................................................. 4-8 4.4. Sluiceways ........................................................................................................ 4-13 Boundary Hydroelectric Project FERC No. 2144 Seattle City Light 1565.02/FishPassageEID_Boundary_11.06 ii November 2006 EARLY INFORMATION DEVELOPMENT: FISH CONNECTIVITY 4.5. Skimmer Gate................................................................................................... 4-15 4.6. Entrainment Summary...................................................................................... 4-15 5 Summary............................................................................................................................... 5-1 6 References Cited................................................................................................................... 6-1 APPENDIX A: Consultation Record Between Relicensing Participants Boundary Hydroelectric Project FERC No. 2144 Seattle City Light 1565.02/FishPassageEID_Boundary_11.06 iii November 2006 EARLY INFORMATION DEVELOPMENT: FISH CONNECTIVITY FIGURES Figure 1-1. Boundary Project vicinity map. .......................................................................... 1-3 Figure 1-2. Aerial overview of Boundary Dam and associated facilities.............................. 1-4 Figure 3-1. Average monthly water temperature in Boundary Reservoir near Metaline Falls (USGS Gage 12398550) from 2000 to 2003. .......................................... 3-11 Figure 4-1. Comparison of mortality estimates for Units 51-54 to Stone & Webster (1992).................................................................................................................. 4-6 Figure 4-2. Spillway 1 and skimmer gate chute on left bank................................................ 4-8 Figure 4-3. Spillway 2 on right bank..................................................................................... 4-9 Figure 4-4. Spill flow looking from above.......................................................................... 4-10 Figure 4-5. Spill flow looking from downstream................................................................ 4-11 Figure 4-6. Downstream face of the dam showing the sluice gates .................................... 4-14 Boundary Hydroelectric Project FERC No. 2144 Seattle City Light 1565.02/FishPassageEID_Boundary_11.06 iv November 2006 EARLY INFORMATION DEVELOPMENT: FISH CONNECTIVITY TABLES Table 3-1. Age, mean length, and sample size of cutthroat trout and mountain whitefish captured in Boundary Reservoir during 2000 (McLellan 2001)......... 3-6 Table 3-2. Back-calculated mean length in mm (sample size) at age for fish capture in Boundary Reservoir during 2000 and Box Canyon Reservoir during 1988 to 1990 (Ashe and Scholz 1992; Ashe et al. 1991; Barber et al. 1990; and Barber et al. 1989). ............................................................................ 3-6 Table 3-3. Approximate cruising, sustained, and burst swimming speeds for salmonids and suckers from Bell (1991). ......................................................... 3-10 Table 4-1. Boundary Project turbine characteristics............................................................ 4-4 Table 4-2. Estimated mortality ranges for existing downstream passage routes. .............. 4-16 Table 5-1. Potential Boundary Project fish connectivity program....................................... 5-3 Boundary Hydroelectric Project FERC No. 2144 Seattle City Light 1565.02/FishPassageEID_Boundary_11.06 v November 2006 EARLY INFORMATION DEVELOPMENT: FISH CONNECTIVITY Early Information Development: Fish Connectivity at the Boundary Hydroelectric Project Boundary Hydroelectric Project (FERC No. 2144) 1 INTRODUCTION The Boundary Hydroelectric Project, (the "Boundary Project"), is owned and operated by Seattle City Light (SCL) under a license administered by the Federal Energy Regulatory Commission. The present license for the Boundary Project (FERC No. 2144) expires in September 2011, and in accordance with FERC regulations, SCL must file its application for a new license no later than September 2009. For the relicensing of the Boundary Project, SCL is using the FERC Integrated Licensing Process (ILP) to provide the framework for its consultation with stakeholders during the period leading up to the filing of its license application. As part of the ILP, SCL is responsible for developing a Proposed Study Plan that describes each study to be conducted in support of relicensing, a study schedule, and considerations of level of effort and cost. SCL identified the subject of fish habitat connectivity and potential fish entrainment as areas where early (i.e., prior to formal study phase) information development (EID) would be beneficial. Boundary Dam is situated in a narrow canyon at River Mile (RM) 17.0 on the Pend Oreille River. The dam is 340 feet high and was built without fish passage facilities. Anadromous fish access to the upper Columbia River basin, including access to the Pend Oreille River, was blocked in 1942 by construction of Grand Coulee Dam 164 miles downstream. While anadromous fish no longer have access to the Pend Oreille River, potential fish connectivity between habitats upstream and downstream of Boundary Dam, and potential injury or mortality of fish that may be entrained in Project facilities have been identified as relicensing study issues. The objective of this EID effort is to compile existing information to support future stakeholder discussions of potential fish connectivity and entrainment effects during FERC relicensing of the Boundary Project. No site-specific field studies of entrainment or upstream and downstream fish connectivity are anticipated prior to development of proposed study plans in 2006. As part of this EID effort, descriptions of existing Boundary Project facilities and operations and background information relevant to fish connectivity and entrainment have been compiled for the Boundary Project. Because the movement and potential connectivity of fish throughout the Pend Oreille River system is pertinent to the issue of fish passage at the Boundary Project; a summary of existing and planned fish connectivity programs has also been compiled for other hydropower projects on the Pend Oreille