Henry Hagg Lake Resource Management Plan U.S. Department of the Interior Bureau of Reclamation Pacific Northwest Region Lower Columbia Area Office May 2004 Cowlitz ClatsopRegional Context MONTANA WASHINGTON Columbia %&'(I5 Clark IDAHO OREGON WA O S R I205 CALIFORNIA H %&'( NEVADA E I N G G O T N O N Multnomah Vancouver W il la Washington m Columbia e Tillamook t Henry Hagg Lake Study Area OP26 te %&'(I5 R iver Forest %&'(I84 Grove Hillsboro Cornelius Portland %&'(I205 Gresham Aloha uala Powellhurst-Centennial T tin R Beaverton iv er R iv e r Gaston Milwaukie Tigard Lake Oswego Oatfield OP47 Tualatin West Linn %&'(I205 Oregon City Yamhill Clackamas r Wi e v l lam ette Ri %&'(I5 McMinnville Marion Highway County Boundary Regional Location Map Stream State Boundary V Henry Hagg Lake RMP 0510 Miles 1:530,000 Source: ESRI, USBR, USGS, EDAW, 2003 P:\1e41401_Henry_Hagg\GIS\Project\mxd\RMP\Figure_Regional_Location.mxd HENRY HAGG LAKE Resource Management Plan U.S. Department of the Interior Bureau of Reclamation Approved: This Resource Management Plan was prepared by EDAW and JPA under contract for the Department of the Interior, Bureau of Reclamation, Pacific Northwest Region. Point of Contact: Karen Blakney U.S. Bureau of Reclamation Lower Columbia Area Office 825 NE Multnomah Street, Suite 110 Portland, OR 97232-2135 (503) 872-2796 Cowlitz ClatsopRegional Context MONTANA WASHINGTON Columbia '%&(I5 Clark IDAHO OREGON WA O S R I205 CALIFORNIA H &%'( NEVADA E I N G G O T N O N Multnomah Vancouver W il la Washington m Columbia e Tillamook t Henry Hagg Lake Study Area OP26 te '%&(I5 R iver Forest '%&(I84 Grove Hillsboro Cornelius Portland %&'(I205 Gresham Aloha uala Powellhurst-Centennial T tin R Beaverton iv er R iv e r Gaston Milwaukie Tigard Lake Oswego Oatfield OP47 Tualatin West Linn %&'(I205 Oregon City Yamhill Clackamas r Wi e v l lam ette Ri %&('I5 McMinnville Marion Highway County Boundary Regional Location Map Stream State Boundary V Henry Hagg Lake RMP 0 5 10 Miles 1:530,000 Source: ESRI, USBR, USGS, EDAW, 2003 P:\1e41401_Henry_Hagg\GIS\Project\mxd\RMP\Figure_Regional_Location.mxd HENRY HAGG LAKE RESOURCE MANAGEMENT PLAN Table of Contents CONTENTS Chapter 1 Introduction .............................................................................................................. 1-1 1.1 RMP Program and Policy................................................................................ 1-1 1.2 Purpose and Scope of the Plan ........................................................................ 1-1 1.3 Relationship to Tualatin Valley Water Supply Feasibility Study ................... 1-2 1.4 Location and Description of the RMP Study Area.......................................... 1-3 1.5 Project Summary ............................................................................................. 1-4 1.6 Overview of Public Involvement, Agency, and Tribal Coordination ............. 1-7 Chapter 2 Existing Conditions .................................................................................................. 2-1 2.1 Natural Resources............................................................................................ 2-1 2.1.1 Climate ................................................................................................ 2-1 2.1.2 Topography ......................................................................................... 2-1 2.1.3 Geology ............................................................................................... 2-2 2.1.4 Soils..................................................................................................... 2-2 2.1.5 Hydrology and Water Quality ............................................................. 2-9 2.1.6 Vegetation ......................................................................................... 2-15 2.1.7 Fish and Wildlife............................................................................... 2-23 2.1.8 Threatened, Endangered, and Sensitive (TES) Species .................... 2-30 2.2 Visual Resources ........................................................................................... 2-36 2.3 Noise.............................................................................................................. 2-38 2.4 Cultural Resources ........................................................................................ 2-39 2.4.1 Historical Overview .......................................................................... 2-39 2.4.2 Archeological Investigations............................................................. 2-40 2.4.3 Traditional Cultural Properties (TCPs) ............................................. 2-42 2.5 Indian Sacred Sites ........................................................................................ 2-43 2.6 Indian Trust Assets........................................................................................ 2-43 2.7 Socioeconomics............................................................................................. 2-44 2.7.1 Demographic Profile ......................................................................... 2-44 2.7.2 Economic Setting .............................................................................. 2-44 2.7.3 Park Funding ..................................................................................... 2-45 May 2004 TABLE OF CONTENTS 1i1 HENRY HAGG LAKE RESOURCE MANAGEMENT PLAN CONTENTS Chapter 3 Existing Land Use and Management........................................................................ 3-1 3.1 Land Status and Management ......................................................................... 3-1 3.1.1 Project Facilities and General Operations ........................................... 3-1 3.1.2 Reservoir Operations........................................................................... 3-1 3.1.3 Land Status and Management ............................................................. 3-2 3.1.4 Contractual Agreements ...................................................................... 3-5 3.1.5 Easements............................................................................................ 3-6 3.1.6 Encroachments on Reclamation Lands ............................................... 3-6 3.1.7 Adjacent Land Use Patterns ................................................................ 3-7 3.2 Public Services and Utilities............................................................................ 3-8 3.2.1 Electrical.............................................................................................. 3-8 3.2.2 Potable and Non-Potable Water .......................................................... 3-8 3.2.3 Wastewater .......................................................................................... 3-9 3.2.4 Solid Waste.......................................................................................... 3-9 3.2.5 Fire Protection and Emergency Services........................................... 3-10 3.2.6 Law Enforcement .............................................................................. 3-11 3.3 Recreation...................................................................................................... 3-12 3.3.1 Recreation Facilities .......................................................................... 3-12 3.3.2 Recreation Activities and Use Levels ............................................... 3-18 3.3.3 Park Security and Safety ................................................................... 3-22 3.3.4 Special Events ................................................................................... 3-23 3.4 Transportation and Access ............................................................................ 3-24 3.4.1 Major Arterials .................................................................................. 3-24 3.4.2 Local Roads....................................................................................... 3-25 3.4.3 Parking............................................................................................... 3-25 3.4.4 Trails.................................................................................................. 3-25 3.4.5 Reservoir/Boat Access ...................................................................... 3-26 3.4.6 Accessibility ...................................................................................... 3-27 Chapter 4 The RMP Planning Process...................................................................................... 4-1 4.1 Overview ......................................................................................................... 4-1 4.2 Public Involvement Program........................................................................... 4-3 4.2.1 Newsbriefs........................................................................................... 4-3 4.2.2 Public Meetings................................................................................... 4-3 4.2.3 Ad Hoc Work Group ........................................................................... 4-3 4.2.4 World Wide Web................................................................................. 4-5 4.3 Tribal Consultation.......................................................................................... 4-5 4.3.1 Overview of Government-to-Government Consultation with Tribes................................................................................................... 4-5 4.3.2 National Historic Preservation Act Requirements