Southwest Hills Resource Protection Plan
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SOUTHWEST HILLS RESOURCE PROTECTION PLAN INVENTORY, ANALYSIS AND REGULATIONS for the PROTECTION OF WETLANDS, WATER BODIES, FISH AND WILDLIFE HABITATS, OPEN SPACE AND NATURAL AREAS Adopted by City Council January 23, 1992 Effective January 23, 1992 Ordinance No. 165002 Bureau of Planning Portland, Oregon May 1992 Portland City Council J. E. Bud Clark, Mayor Earl Blumenauer, Commissioner Dick Bogle, Commissioner Gretchen Kafoury, Commissioner Michael Lindberg, Commissioner Portland Planning Commission Martha Peck Andrews, President W. Richard Cooley, Vice President Stan Amy Joan Brown-Kline Estill Deitz Margaret Kirkpatrick Richard Michaelson Chet Orloff Vivian Parker To obtain a large-print version of this document, please call 823-7700 Printed on recycled paper SOUTHWEST HILLS RESOURCE PROTECTION PLAN Adopted by City Council January 23, 1992 Effective January 23, 1992 Ordinance No. 165002 Bureau of Planning Gretchen Kafoury, Commissioner-In-Charge Robert E. Stacey, Jr., Planning Director Robert E. Clay, Chief Planner, Long Range Planning and Urban Design Project Staff Tim Brooks, Project Manager Gail Curtis, City Planner Damian Syrnyk, City Planner Esther Lev, Consulting Biologist Kria Lacher, Planning Assistant Dick Reynolds, Planning Assistant Project Assistance Duncan Brown, Senior Planner Cary Pinard, Senior Planner Chuck Beasley, Volunteer Jim Cronan, Volunteer Betty Woerner, Volunteer Geoff Sauncy, Graphic Illustrator May 1992 Table of Contents Chapter 1 INTRODUCTION ....................................................................................page 1 Purpose................................................................................................................. 3 Relation to Other Natural Resource Projects .................................................. 3 Organization of the Plan.................................................................................... 4 How to Use this Document ............................................................................... 4 Vicinity Map ........................................................................................................ 5 Chapter 2 SUMMARY OF CITY COUNCIL ACTIONS ............................................... 7 Chapter 3 BACKGROUND .............................................................................................. 11 Introduction....................................................................................................... 13 Area History ...................................................................................................... 13 Past Planning Efforts ........................................................................................ 14 Public Facilities and Improvements............................................................... 22 Summary............................................................................................................ 24 Chapter 4 POLICY FRAMEWORK ................................................................................. 25 Introduction....................................................................................................... 27 State..................................................................................................................... 27 Local.................................................................................................................... 29 Regional.............................................................................................................. 33 Federal................................................................................................................ 34 Summary............................................................................................................ 35 Chapter 5 AREAWIDE INVENTORY OF NATURAL RESOURCES....................... 37 Introduction....................................................................................................... 39 Resource Functions and Values...................................................................... 39 Geology .............................................................................................................. 40 Soils..................................................................................................................... 41 Topography and Slopes ................................................................................... 42 Groundwater ..................................................................................................... 43 Vegetation.......................................................................................................... 47 Wildlife............................................................................................................... 50 Mineral and Aggregate Resources ................................................................. 51 Summary............................................................................................................ 51 Chapter 6 GENERAL ANALYSIS OF ESEE CONSEQUENCES............................... 53 Introduction....................................................................................................... 55 Compatible/Conflicting Uses .......................................................................... 56 Economic Consequences.................................................................................. 56 Social Consequences......................................................................................... 62 Environmental Consequences......................................................................... 65 Energy Consequences ...................................................................................... 74 Applicable Statewide Planning Goals............................................................ 76 Summary............................................................................................................ 79 Chapter 7 SITE-SPECIFIC INVENTORY AND ANALYSIS...................................... 81 Introduction....................................................................................................... 83 Site Selection...................................................................................................... 83 Method of Determining Location, Quantity and Quality ........................... 84 Method of Conflicting Use Analysis.............................................................. 85 Site Summary Overview.................................................................................. 85 Resource Site Summaries ................................................................................ 87 Sites Map............................................................................................................ 89 Site No. 110 Johnson Creek ................................................................. 91 Site No. 111 Canyon Headwaters....................................................... 98 Site No. 112 Canyon Road East.........................................................104 Site No. 113 Marquam Hill Ravine...................................................109 Site No. 114 Terwilliger Parkway, Central......................................117 Site No. 115 George Himes Park.......................................................128 Site No. 116 Capitol Hill/Burlingame ..............................................134 Site No. 117 Stephens Creek/River View Cemetery ......................139 Site No. 118 Multnomah ....................................................................145 Site No. 119 Falling Creek .................................................................149 Site No. 120 Marshall Park/Capitol Hill .........................................154 Site No. 121 Arnold Creek Headwaters ..........................................159 Site No. 122 Arnold Creek................................................................. 164 Site No. 123 Tryon Creek State Park ................................................169 Chapter 8 PLAN PROTECTION MEASURES............................................................175 Introduction.....................................................................................................177 General Summary...........................................................................................177 Amendments to Comprehensive Plan Goals and Policies........................178 Southwest Hills Protection Plan Policies and Objectives..........................179 Amendments to Title 33, Planning and Zoning .........................................187 Amendments to the Official Zoning Maps .................................................196 Adoption of a resolution on the concept of establishing a land bank for parks and natural areas acquisition..................................197 Appendix A ADOPTING ORDINANCE...................................................................199 Appendix B GLOSSARY ..............................................................................................213 Appendix C BIBLIOGRAPHY.....................................................................................221 CHAPTER 1 INTRODUCTION PURPOSE • RELATION TO OTHER NATURAL RESOURCE PROJECTS • ORGANIZATION OF THE PLAN • HOW TO USE THIS DOCUMENT • Purpose The Southwest Hills Resource Protection Plan provides the inventory, analysis and recommendations for protection of significant natural resources located in southwest Portland. The project study area covers 7,000 acres south of the Balch Creek basin and downtown