DOCSLIB.ORG

Final Report

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Final Report Skagit River Basin Skagit River Flood Risk Management Feasibility Study FINAL REPORT HYDROLOGY TECHNICAL DOCUMENTATION August 2013 HYDROLOGY TECHNICAL DOCUMENTATION TABLE OF CONTENTS Important Note on Elevations and Vertical Datum ............................................................. i 1.0 Background ............................................................................................................. 1 1.1 General ................................................................................................................ 1 1.2 Purpose of Documentation .................................................................................. 1 1.3 Study Area .......................................................................................................... 1 1.4 Study and Technical Review Chronology .......................................................... 2 2.0 General Basin Characteristics ................................................................................. 4 2.1 Topography ......................................................................................................... 4 2.2 Geology ............................................................................................................... 5 2.3 Sediment ............................................................................................................. 5 2.4 Climate ................................................................................................................ 6 2.4.1 Temperature .................................................................................................... 6 2.4.2 Precipitation .................................................................................................... 9 2.4.3 Snowfall .......................................................................................................... 9 2.4.4 Wind ................................................................................................................ 9 2.4.5 Storms ........................................................................................................... 10 2.4.6 Channel Characteristics ................................................................................ 14 2.4.7 Streamflow Characteristics ........................................................................... 15 2.4.8 Streamgage Stations ...................................................................................... 16 2.4.9 Floods ............................................................................................................ 18 3.0 Hydrologic Study of the Skagit River Basin ........................................................ 25 3.1 Upper Skagit River Basin Above Concrete, WA to Ross Dam ........................ 25 3.2 Baker River ....................................................................................................... 25 3.3 Sauk River ......................................................................................................... 28 3.4 Cascade River and Local Flow from Marblemount to Concrete ...................... 28 3.5 Local Flow from Newhalem to Marblemount .................................................. 30 3.6 Thunder Creek and Local Flow from Ross Dam to Newhalem ........................ 30 3.7 Skagit River Above Ross Dam ......................................................................... 31 4.0 Skagit River near Concrete Frequency Analysis .................................................. 33 4.1 Developing a Consistent Record ....................................................................... 33 4.1.1 Methodology Used to Estimate Unregulated Peak Annual Discharge from Regulated Discharges for the Skagit River Near Concrete ....................................... 34 4.1.2 Determining the Relationship between Historical 1-day Flows and Historical Peak Flows ................................................................................................................ 39 4.2 Winter Flood Frequency Curve ........................................................................ 39 4.3 Hypothetical Unregulated Hydrographs for Skagit River near Concrete ......... 40 4.4 Regulated Frequency Curve at Concrete .......................................................... 41 4.4.1 Data Available with Existing Flood Control Operation ............................... 41 4.4.2 Development of Regulated Lower Frequency Events .................................. 41 4.4.3 Confidence Limits for The Regulated Frequency Curve at Concrete .......... 48 Skagit River Basin, WA Final Report Flood Risk Management Study i August 2013 5.0 Lower Skagit River Basin from Concrete, WA to Mouths of the North and South Forks of the Skagit River .................................................................................................. 49 5.1 Local Flow from Concrete to Sedro-Woolley .................................................. 49 5.2 Nookachamps Creek ......................................................................................... 53 5.3 Samish River ..................................................................................................... 54 5.4 Development of Hypothetical Hydrographs for Lower Basin .......................... 55 5.5 Timing of Lower Basin Flows .......................................................................... 55 6.0 Hydrologic Results ............................................................................................... 57 6.1 Comparison with Previous Study Results ......................................................... 59 7.0 Limits of Downstream Flood Protection............................................................... 62 APPENDICES A. Chronological Listing of Selected Hydrology Reports and Review or Re-Evaluation Documents B. Summary of Stream Gage Information C. Schematics for the Methods Used to Unregulate Peak Flows for the Skagit River near Concrete D. Skagit River Basin Frequency Analyses E. Unregulated and Regulated Hydrographs for Skagit River near Concrete F. Skagit River Basin Regression Analyses G. Impact of Seasonal Variation in Flood Storage on Regulated Peak Flows Skagit River Basin, WA Final Report Flood Risk Management Study ii August 2013 Hydrology Technical Documentation Important Note on Elevations and Vertical Datum Elevations in this document are reported to a variety of vertical datums including NGVD29, NAVD88 and local datums, and are provided for general context or general information purposes only; elevations should be checked before being used for any other purpose. Skagit River Basin, WA Final Report Flood Risk Management Study i August 2013 Hydrology Technical Documentation 1.0 Background 1.1 General Authority for the Skagit River, Washington, flood risk management feasibility study is derived from Section 209 of the Flood Control Act of 1962 (Public Law 87-874). Section 209 authorized a comprehensive study of Puget Sound and Adjacent Waters, including tributaries such as the Skagit River, in the interest of flood risk management, navigation, and other water uses and related land resources. The current feasibility study was initiated in 1997 as an interim study under this statutory authority. Skagit County is the local sponsor of the feasibility study and is providing a combination of cash and in- kind services equaling 50 percent of the total study effort. The purpose of the study is to formulate and recommend a comprehensive flood risk management plan for the Skagit River floodplain that will reduce flood risk in Skagit County with a focus on downstream of Sedro-Woolley. The authorization for the Skagit River Flood Risk Management Feasibility Study necessitated hydrologic and hydraulic analysis of the Skagit River basin. This allows for a basin-wide, systematic evaluation of the Skagit River. These analyses incorporate historical rainfall-runoff, reservoir operations, and flow along the major river systems to effectively evaluate the hydraulic performance of the flood management systems. The models can be used to assess the performance of the current systems or modified systems under a wide range of hydrologic conditions. 1.2 Purpose of Documentation The main goal of the hydrologic analysis is to provide the hydrologic inputs necessary to adequately evaluate potential flood risk management measures. The main product components of this effort include: Description of the hydrologic analysis methodology Development of flows necessary to characterize the 2-, 5-, 10-, 25-, 50-, 75-, 100-, 250-, and 500-year flood events for the Skagit River Basin 1.3 Study Area The study area encompasses the mainstem Skagit River from Skagit Bay to Ross Dam, the Baker River from the confluence with the Skagit to Upper Baker Dam, the Sauk River from the confluence with the Skagit to the Sauk River at Sauk gage, and the Cascade River from the confluence of the Skagit to the old Cascade River at Marblemount gage. The Skagit River basin has a drainage area of 3,115 square miles. Skagit River Basin, WA Final Report Flood Risk Management Study 1 August 2013 Hydrology Technical Documentation 1.4 Study and Technical Review Chronology Draft Hydrology Technical Documentation for the Skagit River Flood Risk Management Feasibility Study was produced by the Seattle District USACE in August 2004, with technical review by the Hydrologic Engineering Center. Hydrologic analyses for the study were subsequently revised and updated by the Seattle District primarily to incorporate additional hydrologic data and to account
Load more

Recommended publications
  • North Cascades Contested Terrain
    North Cascades NP: Contested Terrain: North Cascades National Park Service Complex: An Administrative History NORTH CASCADES Contested Terrain North Cascades National Park Service Complex: An Administrative History CONTESTED TERRAIN: North Cascades National Park Service Complex, Washington An Administrative History By David Louter 1998 National Park Service Seattle, Washington TABLE OF CONTENTS adhi/index.htm Last Updated: 14-Apr-1999 http://www.nps.gov/history/history/online_books/noca/adhi/[11/22/2013 1:57:33 PM] North Cascades NP: Contested Terrain: North Cascades National Park Service Complex: An Administrative History (Table of Contents) NORTH CASCADES Contested Terrain North Cascades National Park Service Complex: An Administrative History TABLE OF CONTENTS Cover Cover: The Southern Pickett Range, 1963. (Courtesy of North Cascades National Park) Introduction Part I A Wilderness Park (1890s to 1968) Chapter 1 Contested Terrain: The Establishment of North Cascades National Park Part II The Making of a New Park (1968 to 1978) Chapter 2 Administration Chapter 3 Visitor Use and Development Chapter 4 Concessions Chapter 5 Wilderness Proposals and Backcountry Management Chapter 6 Research and Resource Management Chapter 7 Dam Dilemma: North Cascades National Park and the High Ross Dam Controversy Chapter 8 Stehekin: Land of Freedom and Want Part III The Wilderness Park Ideal and the Challenge of Traditional Park Management (1978 to 1998) Chapter 9 Administration Chapter 10 http://www.nps.gov/history/history/online_books/noca/adhi/contents.htm[11/22/2013
    [Show full text]
  • Suspended-Sediment Concentration in the Sauk River, Washington, Water Years 2012-13
    Prepared in cooperation with the Sauk-Suiattle Indian Tribe Suspended-Sediment Concentration in the Sauk River, Washington, Water Years 2012-13 By Christopher A. Curran1, Scott Morris2, and James R. Foreman1 1 U.S. Geological Survey, Washington Water Science Center, Tacoma, Washington 2 Department of Natural Resources, Sauk-Suiattle Indian Tribe, Darrington, Washington Photograph of glacier-derived suspended sediment entering the Sauk River immediately downstream of the Suiattle River mouth (August 5, 2014, Chris Curran). iii Introduction The Sauk River is one of the few remaining large, glacier-fed rivers in western Washington that is unconstrained by dams and drains a relatively undisturbed landscape along the western slope of the Cascade Range. The river and its tributaries are important spawning ground and habitat for endangered Chinook salmon (Beamer and others, 2005) and also the primary conveyors of meltwater and sediment from Glacier Peak, an active volcano (fig. 1). As such, the Sauk River is a significant tributary source of both fish and fluvial sediment to the Skagit River, the largest river in western Washington that enters Puget Sound. Because of its location and function, the Sauk River basin presents a unique opportunity in the Puget Sound region for studying the sediment load derived from receding glaciers and the potential impacts to fish spawning and rearing habitat, and downstream river-restoration and flood- control projects. The lower reach of the Sauk River has some of the highest rates of incubation mortality for Chinook salmon in the Skagit River basin, a fact attributed to unusually high deposition of fine-grained sediments (Beamer, 2000b).
    [Show full text]
  • OFR 2019–1144: Preliminary Assessment of Shallow Groundwater Chemistry Near Goodell Creek, North Cascades National Park, Washi
    Prepared in cooperation with the National Park Service Preliminary Assessment of Shallow Groundwater Chemistry near Goodell Creek, North Cascades National Park, Washington Open-File Report 2019–1144 U.S. Department of the Interior U.S. Geological Survey Preliminary Assessment of Shallow Groundwater Chemistry near Goodell Creek, North Cascades National Park, Washington By Rich W. Sheibley and James R. Foreman Prepared in cooperation with the National Park Service Open-File Report 2019–1144 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior David Bernhardt, Secretary U.S. Geological Survey James F. Reilly II, Director U.S. Geological Survey, Reston, Virginia: 2019 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit https://www.usgs.gov/ or call 1–888–ASK–USGS (1–888–275–8747). For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov/. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Suggested citation: Sheibley, R.W., and Foreman, J.R., 2019, Preliminary assessment of shallow groundwater chemistry near Goodell Creek, North Cascades National Park, Washington: U.S. Geological Survey Open-File Report 2019–1144, 14 p., https://doi.org/10.3133/ofr20191144.
    [Show full text]
  • Skagit River Emergency Bank Stabilization And
    United States Department of the Interior FISH AND WILDLIFE SERVICE Washington Fish and Wildlife Office 510 Desmond Dr. SE, Suite 102 Lacey, Washington 98503 In Reply Refer To: AUG 1 6 2011 13410-2011-F-0141 13410-2010-F-0175 Daniel M. Mathis, Division Adnlinistrator Federal Highway Administration ATIN: Jeff Horton Evergreen Plaza Building 711 Capitol Way South, Suite 501 Olympia, Washington 98501-1284 Michelle Walker, Chief, Regulatory Branch Seattle District, Corps of Engineers ATIN: Rebecca McAndrew P.O. Box 3755 Seattle, Washington 98124-3755 Dear Mr. Mathis and Ms. Walker: This document transmits the U.S. Fish and Wildlife Service's Biological Opinion (Opinion) based on our review of the proposed State Route 20, Skagit River Emergency Bank Stabilization and Chronic Environmental Deficiency Project in Skagit County, Washington, and its effects on the bull trout (Salve linus conjluentus), marbled murrelet (Brachyramphus marmoratus), northern spotted owl (Strix occidentalis caurina), and designated bull trout critical habitat, in accordance with section 7 of the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.) (Act). Your requests for initiation of formal consultation were received on February 3, 2011, and January 19,2010. The Federal Highway Administration (FHWA) and U.S. Army Corps of Engineers - Seattle District (Corps) provided information in support of "may affect, likely to adversely affect" determinations for the bull trout and designated bull trout critical habitat. On April 13 and 14, 2011, the FHWA and Corps gave their consent for addressing potential adverse effects to the bull trout and bull trout critical habitat with a single Opinion.
    [Show full text]
  • The Mountaineer Annual
    The Mountaineer Annual 1991-1992 The MountaineerAnnual 1991-1992 Volume 79 Published August, 1993 2 TheMountaineer Annual Beargrass on Mt. Rainier Steve Johnson The Mountaineers Purposes To explore and study the mountains, forests and watercourses of the Northwest; To gather into permanent form the history and traditions of this region; To preserve by the encouragement of protective legislation or otherwise the natural beauty of Northwest America; To make expeditionsinto theseregions in fulfillment of the above purposes; To encourage a spirit of good fellowship among all lovers of outdoor life. Ascending Eldorado Royce Conrad 4 The Mountaineer Annual The MountaineerAnnual The continuing spirit of The Mountaineers shines through in this newest edition of The Mountaineer Annual. Thank you to all the creative people who so willingly gave their time and talent in producing this book. EditorialCommittee Judi Maxwell- Editor; Production Manager; Layout Ann Marshall -Assistant Editor Steve Johnson -Computer Editor; Mailing Fran Troje -Advertising Manager Mike Buettner- Editorial Committee George Potratz- Desktop Publishing (Communications Manager) Helen Cherullo and Marge Mueller- Production Consultants (Mountaineers Books) Virginia Felton - Executive Director Katrina Reed-Administrative Assistant Eileen Allen - Accounting Manager Steve Costie -Member Services Manager Cover Design: Judi Maxwell and Helen Cherullo Cover Photographs: Front -Ascent of Eldorado © Photo by John Roper Back- Friends in High Places © Photo by Julie Smith © 1993 by The Mountaineers All Rights Reserved Published by The Mountaineers 300Third Avenue West Seattle, Washington 98119 Printedin the United States of America Printed on recycled paper Contents The Mountaineers Purposes 3 Foreword 8 Don Heck Vision for the Twenty-First Century 11 Dianne Hoff Development of a Wilderness Ethics Policy 14 Edward M.
    [Show full text]
  • Mount Baker, Washington
    WATER-QUALITY EFFECTS ON BAKER LAKE OF RECENT VOLCANIC ACTIVITY AT MOUNT BAKER, WASHINGTON GEOLOGICAL SURVEY PROFESSIONAL PAPER 1022-B Prepared in cooperation with the State of Washington Department of Ecology Water-Quality Effects on Baker Lake of Recent Volcanic Activity at Mount Baker, Washington By G. C. BORTLESON, R. T. WILSON, and B. L. FOXWORTHY VOLCANIC ACTIVITY AT MOUNT BAKER, WASHINGTON GEOLOGICAL SURVEY PROFESSIONAL PAPER 1022-B Prepared in cooperation with the State of Washington Department of Ecology UNITED STATES GOVERNMENT PRINTING OFFICE:1977 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Bortleson, Gilbert Carl, 1940- Water-quality effects on Baker Lake of recent volcanic activity at Mount Baker, Washington. (Volcanic Activity at Mt. Baker) (Geologic Survey Professional Paper 1022-B) Bibliography: p. 30. Supt.ofDocs.no.: I 19.16:1022-6 1. Water quality-Washington (State)--Baker Lake. 2. Volcanism-Washington (State). 3. Baker, Mount, Wash. I. Wilson, Reed T., joint author. II. Foxworthy, Bruce, La Verne, 1925- joint author. III. Washington (State). Dept. of Ecology. IV. Title. V. Series: Volcanic activity at Mount Baker, Washington. VI. Series: United States Geological Survey Professional Paper 1022-B. TD224.W2B67 363.6'1 77-21097 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-03008-0 CONTENTS Conversion factors _________________________. Ill Quality of surface waters draining to Baker Lake ______B16 Abstract__________________________________. Bl Water in Sherman Crater __________________ 16 Introduction ______________________________. 1 Boulder Creek and other streams _____________.
    [Show full text]
  • Upper Skagit
    A GUIDE TO PEOPLE AND PLACES OF THE UPPER SKAGIT BOB MIERENDORF AND GERRY COOK NORTH CASCADES NATIONAL PARK SERVICE COMPLEX NORTH CASCADES INSTITUTE JULY 22–25 2010 1 CLASS FIELD DAYS ITINERARY PEOPLE AND PLACES OF THE UPPER SKAGIT RIVER JULY 22–25, 2010 FRIDAY 9 am Drive from ELC to Ross Dam Trailhead parking lot 9:15–10:00 Hike to Ross Lake (end of haul road) – Brief stop on trail at a Ross Dam overlook – Load ourselves and gear on the Mule 10:30 am Welcome to the Wild Upper Skagit – Rules of the Mule and other safety matters – Instructor and participant introductions Noon Lunch on the Mule near Big Beaver Creek 2:45 pm Second stop near May Creek (no rest rooms here) 6 pm Arrive at Lightning Horse Camp (our base camp for two nights) 7 pm Potluck dinner SATURDAY 7 am Breakfast 8 am–Noon Ethnobotany hike along Eastbank Trail – About a two mile hike, rolling terrain – Gerry will pick us up with the Mule – Lunch on the Mule 1 pm Quick rest room stop at Boundary Bay Campground 3 pm Arrive at International Boundary 3:15 pm Stop at Winnebago Flats – There are toilets here – Get drinking water and fill water jugs 3:45 pm Depart Winnebago Flats on return trip 5 pm Arrive back at our camp 6:30 pm Potluck dinner SUNDAY ABOUT THE COVER 7 am Breakfast U.S. Forest Service, Mt. Baker 8 am Break camp and load Mule Ranger District, 1931 oblique 9 am Depart on Mule aerial facing 182o (south), of pre-impoundment Skagit River 10 am Arrive at Big Beaver Campground flood plain; Skymo Creek canyon – There are rest rooms here in lower right, Devil’s Creek canyon – Hike up Big Beaver to old growth cedar grove emerging from middle left.
    [Show full text]
  • Skagit River History
    SKAGIT RIVER HISTORY By Larry Kunzler December 3, 2005 www.skagitriverhistory.com 1 A Documented History of the Skagit River Table of Contents Table of Contents................................................................................................................ 2 Preface................................................................................................................................. 3 Prelude ................................................................................................................................ 4 Historical Facts About The River ....................................................................................... 4 Log Jams ............................................................................................................................. 7 Skagit Valley Population .................................................................................................... 8 Boats On The River ............................................................................................................ 9 Snag Boats ........................................................................................................................ 11 Commerce......................................................................................................................... 13 Swinomish Slough ............................................................................................................ 15 Sterling Bend ...................................................................................................................
    [Show full text]
  • Schedule of Proposed Action (SOPA)
    Schedule of Proposed Action (SOPA) 01/01/2015 to 03/31/2015 Mt Baker-Snoqualmie National Forest This report contains the best available information at the time of publication. Questions may be directed to the Project Contact. Expected Project Name Project Purpose Planning Status Decision Implementation Project Contact R6 - Pacific Northwest Region, Regionwide (excluding Projects occurring in more than one Region) Aquatic Invasive Species order - Wildlife, Fish, Rare plants In Progress: Expected:04/2015 05/2015 James Capurso to prevent the spread or Scoping Start 05/05/2014 208-557-5780 introduction of aquatic invasive [email protected] species Description: The purpose of this order is to prevent the spread or introduction of aquatic invasive plant or animal species. CE Public involvement is targeted for the Umatilla, Willamette, Mt. Baker-Snoqualmie, Gifford Pinchot, and Colville NFs. Web Link: http://www.fs.fed.us/nepa/nepa_project_exp.php?project=44360 Location: UNIT - R6 - Pacific Northwest Region All Units. STATE - Oregon, Washington. COUNTY - Asotin, Clark, Columbia, Cowlitz, Ferry, Garfield, King, Klickitat, Lewis, Pend Oreille, Pierce, Skagit, Skamania, Snohomish, Stevens, Walla Walla, Whatcom, Baker, Clackamas, Douglas, Grant, Jefferson, Lane, Linn, Marion, Morrow, Umatilla, Union, Wallowa, Wheeler. LEGAL - Not Applicable. Order will apply to all Forests in Region 6, however targeted scoping is with the Umatilla, Gifford Pinchot, Mt. Baker/Snoqualmie, Willamette and Colville NFs tribal and public scoping lists. Mt Baker-Snoqualmie National Forest, Forestwide (excluding Projects occurring in more than one Forest) R6 - Pacific Northwest Region Invasive Plant Management - Vegetation management In Progress: Expected:04/2015 05/2015 Phyllis Reed EIS (other than forest products) NOI in Federal Register 360-436-2332 02/28/2012 [email protected] Est.
    [Show full text]
  • 1976 Bicentennial Mckinley South Buttress Expedition
    THE MOUNTAINEER • Cover:Mowich Glacier Art Wolfe The Mountaineer EDITORIAL COMMITTEE Verna Ness, Editor; Herb Belanger, Don Brooks, Garth Ferber. Trudi Ferber, Bill French, Jr., Christa Lewis, Mariann Schmitt, Paul Seeman, Loretta Slater, Roseanne Stukel, Mary Jane Ware. Writing, graphics and photographs should be submitted to the Annual Editor, The Mountaineer, at the address below, before January 15, 1978 for consideration. Photographs should be black and white prints, at least 5 x 7 inches, with caption and photo­ grapher's name on back. Manuscripts should be typed double· spaced, with at least 1 Y:z inch margins, and include writer's name, address and phone number. Graphics should have caption and artist's name on back. Manuscripts cannot be returned. Properly identified photographs and graphics will be returnedabout June. Copyright © 1977, The Mountaineers. Entered as second·class matter April8, 1922, at Post Office, Seattle, Washington, under the act of March 3, 1879. Published monthly, except July, when semi-monthly, by The Mountaineers, 719 Pike Street,Seattle, Washington 98101. Subscription price, monthly bulletin and annual, $6.00 per year. ISBN 0-916890-52-X 2 THE MOUNTAINEERS PURPOSES To explore and study the mountains, forests, and watercourses of the Northwest; To gather into permanentform the history and tra­ ditions of thisregion; To preserve by the encouragement of protective legislation or otherwise the natural beauty of NorthwestAmerica; To make expeditions into these regions in fulfill­ ment of the above purposes; To encourage a spirit of good fellowship among all loversof outdoor life. 0 � . �·' ' :···_I·:_ Red Heather ' J BJ. Packard 3 The Mountaineer At FerryBasin B.
    [Show full text]
  • Stillaguamish Watershed Chinook Salmon Recovery Plan
    Stillaguamish Watershed Chinook Salmon Recovery Plan Prepared by: Stillaguamish Implementation Review Committee (SIRC) June 2005 Recommended Citation: Stillaguamish Implementation Review Committee (SIRC). 2005. Stillaguamish Watershed Chinook Salmon Recovery Plan. Published by Snohomish County Department of Public Works, Surface Water Management Division. Everett, WA. Front Cover Photos (foreground to background): 1. Fish passage project site visit by SIRC (Sean Edwards, Snohomish County SWM) 2. Riparian planting volunteers (Ann Boyce, Stilly-Snohomish Fisheries Enhancement Task Force) 3. Boulder Creek (Ted Parker, Snohomish County SWM) 4. Stillaguamish River Estuary (Washington State Department of Ecology) 5. Background – Higgins Ridge from Hazel Hole on North Fork Stillaguamish River (Snohomish County SWM) Stillaguamish Watershed Chinook Salmon Recovery Plan ii June 2005 Stillaguamish Watershed Chinook Salmon Recovery Plan Table of Contents 1. INTRODUCTION ................................................................................................... 1 Purpose .................................................................................................................................1 SIRC Mission and Objectives ..............................................................................................1 Relationship to Shared Strategy and Central Puget Sound ESU Efforts .............................2 Stillaguamish River Watershed Overview ...........................................................................3 Salmonid
    [Show full text]
  • Preliminary Geologic Map of the Mount Baker 30- by 60-Minute Quadrangle, Washington
    U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Preliminary Geologic Map of the Mount Baker 30- by 60-Minute Quadrangle, Washington by R.W. Tabor1 , R.A. Haugerud2, D.B. Booth3, and E.H. Brown4 Prepared in cooperation with the Washington State Department of Natural Resources, Division of Geology and Earth Resources, Olympia, Washington, 98504 OPEN FILE REPORT 94-403 This report is preliminary and has not been reviewed for conformity with U.S.Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. iu.S.G.S., Menlo Park, California 94025 2U.S.G.S., University of Washington, AJ-20, Seattle, Washington 98195 3SWMD, King County Department of Public Works, Seattle, Washington, 98104 ^Department of Geology, Western Washington University, Bellingham, Washington 98225 INTRODUCTION The Mount Baker 30- by 60-minute quadrangle encompasses rocks and structures that represent the essence of North Cascade geology. The quadrangle is mostly rugged and remote and includes much of the North Cascade National Park and several dedicated Wilderness areas managed by the U.S. Forest Service. Geologic exploration has been slow and difficult. In 1858 George Gibbs (1874) ascended the Skagit River part way to begin the geographic and geologic exploration of the North Cascades. In 1901, Reginald Daly (1912) surveyed the 49th parallel along the Canadian side of the border, and George Smith and Frank Calkins (1904) surveyed the United States' side. Daly's exhaustive report was the first attempt to synthesize what has become an extremely complicated geologic story.
    [Show full text]