DOCSLIB.ORG

Ch1 Overview

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Ch1 Overview RESERVATION OF RIGHTS A number of governments and agencies participated in the development of this Flathead Subbasin Plan, Part I (Assessment Volume), Part II (Inventory Volume), and Part III (Management Plan Volume), its appendices, and electronically linked references and information (hereafter Plan). The primary purpose of the Plan is to help direct Northwest Power and Conservation Council funding of projects that respond to impacts from the development and operation of the Columbia River hydropower system. Nothing in this Plan, or the participation in its development, is intended to, and shall not be interpreted to, compromise, influence, or preclude any government or agency from carrying out any past, present, or future duty or responsibility which it bears or may bear under any authority. Nothing in this Plan or the participation in its development constitutes a waiver or release of any rights, including the right to election of other remedies, or is intended to compromise, influence, or preclude any government or agency from developing and prosecuting any damage claim for those natural resource impacts identified in the Plan which are not directly and exclusively resulting from, or related to, the development and operation of the Columbia River hydropower system. Nothing in this Plan or the participation in its development is intended to, and shall not be interpreted to, waive any rights of enforcement of regulatory, adjudicatory, or police powers against potentially responsible parties for compliance with applicable laws and regulations pertaining to natural resource damages throughout the Flathead Subbasin whether or not specifically identified in this Plan. This Plan is the result of a group effort. Nothing in it or the participation in its development should be interpreted as constituting unqualified acceptance or endorsement of the Plan, its appendices, or any electronically linked reference or information by any party. ACKNOWLEDGEMENTS This assessment, much of which is a compilation of existing information, draws heavily on the previous work of many agencies, groups, educational institutions, consulting firms, and individuals. Throughout we have used excerpts or condensed or adapted sections from other reports, studies, and plans. In each case we have acknowledged such use. The Flathead River Subbasin Plan Technical Team expresses its gratitude for the use of these materials. The Technical Team also thanks Chip McConnaha, Drew Parkin, and Betsy Torell for their assistance with QHA, Paul Anders for his work on LQHA, Mike Panian for developing the terrestrial spreadsheet tool (TBA), Bob Jamieson for his revisions of the assessment outline and early organizational work on TBA, and Susan Ball and Volker Mell for their GIS work. We are also grateful to Albert Chirico and Mike Panian other colleagues in the British Columbia ministries for their help and cooperation with this effort. © 2004 Confederated Salish and Kootenai Tribes (CSKT) and Montana Fish, Wildlife & Parks (MFWP) Citation: Confederated Salish and Kootenai Tribes and Montana Fish, Wildlife & Parks. 2004. Flathead Subbasin Plan: Part I: Flathead River Subbasin Assessment. A report prepared for the Northwest Power and Conservation Council. Portland, OR. Lead Agency: CSKT Co-lead Agency: MFWP Subbasin Coordinator: Lynn DuCharme, CSKT Co-coordinator: Brian Marotz, MFWP Technical Team Lynn DuCharme Confederated Salish and Kootenai Tribes Brian Marotz Montana Fish, Wildlife & Parks Larry VanRinsum Flathead County Conservation District Leo Marnell Glacier National Park Albert Chirico BC Ministry of Sustainable Resource Management Mike Panian BC Ministry of Sustainable Resource Management Bob Jamieson Private Consultant Alan Wood Montana Fish, Wildlife & Parks Scott Relyea Flathead Lake Biological Station, University of Montana Seth Makepeace Confederated Salish and Kootenai Tribes Barry Hansen Confederated Salish and Kootenai Tribes Craig Barfoot Confederated Salish and Kootenai Tribes Art Soukkala Confederated Salish and Kootenai Tribes Steve Phillips US Forest Service (USFS), Flathead National Forest Fred Samson USFS, Region One Wade Fredenberg US Fish and Wildlife Service Bill Westover BC Ministry of Land, Water, and Air Protection Jeff Hutten Montana Fish, Wildlife & Parks Tom Weaver Montana Fish, Wildlife & Parks Dean Sirucek US Forest Service (USFS), Flathead National Forest Beth Gardner US Forest Service (USFS), Flathead National Forest Pat Van Eimeren US Forest Service (USFS), Flathead National Forest Herb Tepper BC Ministry of Land, Water, and Air Protection David Rockwell CW Consulting Document Prepared by David Rockwell GIS work by Susan Ball and Volker Mell, CSKT For information on this document, contact Lynn DuCharme, Subbasin Coordinator Brian Marotz, Subbasin Co-Coordinator Confederated Salish and Kootenai Tribes Montana Fish, Wildlife & Parks PO Box 278 490 North Meridian Rd Pablo, MT 59855 Kalispell, MT 59901 Phone: 406-675-2700 ext. 7279 Phone: (406) 751-4546 email: [email protected] [email protected] 2 INTRODUCTION This assessment constitutes the technical evaluation of the biological and physical characteristics of the Flathead Subbasin, the first step in the development of a subbasin plan, which will be reviewed and eventually adopted as part of the Northwest Power and Conservation Council’s Columbia River Basin Fish and Wildlife Program. The primary purpose of the plan will be to help direct Bonneville Power Administration funding of projects that protect, mitigate, and enhance fish and wildlife that have been adversely impacted by the development and operation of the Columbia River hydropower system. The primary purpose of the assessment is to bring together and synthesize technical information so that it can be used to develop the biological objectives For the PowerPoint introduction to the Kootenai that form the foundation of the management plan. It begins with an overview of and Flathead Subbasin Plans the subbasin environment. Chapter 2 examines in some detail the major biomes that the Subbasin found in the subbasin—aquatic, riparian/wetland, grassland, coniferous forest. Coordinators gave the Each of these biomes is evaluated in terms of ecological function and process and Independent Scientific Review how human activities have affected those functions and processes. For each biome Panel, go to Appendix 96. we also describe the current condition and several reference conditions. Chapter 3 assesses fish and wildlife communities in the subbasin, Chapter 4 examines the status of individual focal and target species. In Chapter 5, we present the results of a detailed aquatic evaluation of each 6th-code HUC in the subbasin and a terrestrial assessment of various units within each of our targeted biomes. This resulted in a ranking of the restoration potential and protection value of each. Finally, in the last chapter we interpret and synthesize our results, setting the stage for development of specific objectives, which make up the bulk of the management plan. It is our hope that this approach, moving from the broad (biomes and communities) to the more specific (individual species and 6th-code HUCs), is a logical framework for developing objectives and strategies to protect, mitigate, and enhance the fish and wildlife of the Flathead Subbasin. 3 This Page Intentionally Blank 4 TABLE OF CONTENTS Reservation of Rights................................................................................................. 1 Acknowledgements .................................................................................................... 1 Introduction ................................................................................................................ 3 1 Subbasin Overview .................................................................................. 13 1.1 Subbasin Description ........................................................................................ 13 1.1.1 Land Status and Administrative Structure ................................................ 16 1.1.2 Climate ..................................................................................................... 20 1.1.3 Geology and Geomorphology .................................................................. 21 1.1.4 Hydrology ................................................................................................. 29 1.1.5 Soils and Landtypes .................................................................................. 35 1.1.6 Vegetation.................................................................................................. 37 1.2 The Subbasin in the Regional Context ............................................................. 45 1.2.1 Size, Placement, and Unique Qualities.................................................... 45 1.2.2 Relationship of the Subbasin to ESA Planning Units ............................... 47 1.2.3 External Environmental Conditions Impacting the Subbasin .................. 49 1.2.4 Macroclimate trends ................................................................................. 50 1.3 Fish, Wildlife, and Plant Species ...................................................................... 51 1.3.1 Vertebrate Species ..................................................................................... 51 1.3.2 Species at Risk .......................................................................................... 51 1.3.3 Aquatic Focal Species and Terrestrial Target Species ............................
Load more

Recommended publications
  • 2017 USFWS National Bison Range
    P.O. Box 70 ∙ Polson, MT 59860 Flathead Lakers: (406) 883-1346 Working for clean water, a healthy Fax (406) 883-1357 ecosystem, and lasting quality of life in [email protected] the Flathead Watershed www.flatheadlakers.org National Bison Range Complex Comprehensive Conservation Plans Comments September 27, 2017 Bernardo Garza and Toni Griffin, Planning Team Co-Leaders U. S. Fish and Wildlife Service Branch of Policy and Planning PO Box 25486 Denver, CO 80225-04865 Please accept the following comments submitted by the Flathead Lakers for the U.S. Fish and Wildlife Service (USFWS) Bison Range Complex Comprehensive Conservation Plan (CCP) development. The Flathead Lakers is a nonprofit, grassroots organization. Our organization was founded in 1958 and currently has over 1,500 members. We work to protect water quality in Flathead Lake and its watershed through education, advocacy and stewardship projects. Our beautiful lakes, rivers and streams, and the fish and wildlife that depend on them are part of what makes the Flathead such a special place and are a large part of its identity. The quality of the environment contributes to our quality of life and our economy. In fact, our quality natural environment has become a competitive advantage and a major force driving economic growth in Flathead County. The Flathead Lakers initiated the collaborative Critical Lands Project in 1999 to address concerns that rapid growth and development would damage lands and waters critical to maintaining the quality of Flathead Lake and its tributaries and the area’s quality of life. The Flathead Lakers coordinate the resulting partnership, the Flathead River to Lake Initiative (R2L), which includes representatives from federal, tribal, state, and local resource management agencies, land trusts, conservation groups and landowners.
    [Show full text]
  • Washington Division of Geology and Earth Resources Open File Report
    RECONNAISSANCE SURFICIAL GEOLOGIC MAPPING OF THE LATE CENOZOIC SEDIMENTS OF THE COLUMBIA BASIN, WASHINGTON by James G. Rigby and Kurt Othberg with contributions from Newell Campbell Larry Hanson Eugene Kiver Dale Stradling Gary Webster Open File Report 79-3 September 1979 State of Washington Department of Natural Resources Division of Geology and Earth Resources Olympia, Washington CONTENTS Introduction Objectives Study Area Regional Setting 1 Mapping Procedure 4 Sample Collection 8 Description of Map Units 8 Pre-Miocene Rocks 8 Columbia River Basalt, Yakima Basalt Subgroup 9 Ellensburg Formation 9 Gravels of the Ancestral Columbia River 13 Ringold Formation 15 Thorp Gravel 17 Gravel of Terrace Remnants 19 Tieton Andesite 23 Palouse Formation and Other Loess Deposits 23 Glacial Deposits 25 Catastrophic Flood Deposits 28 Background and previous work 30 Description and interpretation of flood deposits 35 Distinctive geomorphic features 38 Terraces and other features of undetermined origin 40 Post-Pleistocene Deposits 43 Landslide Deposits 44 Alluvium 45 Alluvial Fan Deposits 45 Older Alluvial Fan Deposits 45 Colluvium 46 Sand Dunes 46 Mirna Mounds and Other Periglacial(?) Patterned Ground 47 Structural Geology 48 Southwest Quadrant 48 Toppenish Ridge 49 Ah tanum Ridge 52 Horse Heaven Hills 52 East Selah Fault 53 Northern Saddle Mountains and Smyrna Bench 54 Selah Butte Area 57 Miscellaneous Areas 58 Northwest Quadrant 58 Kittitas Valley 58 Beebe Terrace Disturbance 59 Winesap Lineament 60 Northeast Quadrant 60 Southeast Quadrant 61 Recommendations 62 Stratigraphy 62 Structure 63 Summary 64 References Cited 66 Appendix A - Tephrochronology and identification of collected datable materials 82 Appendix B - Description of field mapping units 88 Northeast Quadrant 89 Northwest Quadrant 90 Southwest Quadrant 91 Southeast Quadrant 92 ii ILLUSTRATIONS Figure 1.
    [Show full text]
  • South Fork of the Flathead River Originates in the South End of the Bob Marshall Wilderness and Flows Northward to Hungry Horse Reservoir
    The South Fork Acclaimed as one of Montana’s most pristine and remote rivers, the Wild and Scenic South Fork of the Flathead River originates in the south end of the Bob Marshall Wilderness and flows northward to Hungry Horse Reservoir. Boats and supplies are generally packed in on mules or horses over mountain passes to reach the headwa- ters and then packed again from the take-out just above Meadow Creek Gorge, to Meadow Creek Trailhead. There are several commercial outfitters who can provide packing services or full-service floats, but plan ahead as they have limited space available. The floating season is generally from mid-June through late August. The river is Class II-III with standing river waves and shallow rocky shoals. Log jams and other hazards exist, and may change and move seasonally. Always scout from shore prior to floating into any river feature without clear passage. Due to its remoteness, the South Fork requires advanced planning and preparation. Contact the Spotted Bear Ranger Station for updated informa- tion on river and trail conditions, regulations and list of permitted outfitters. Restrictions All sections of the South Fork • Solid human waste containment and the use of fire pans and blankets is recommended. • Store your attractants in a bear resistant manner, in an approved container or vehicle, or hang. Section Specific Restrictions - Confluence with Youngs Creek to Cedar Flats - • Wilderness Section • The party size is limited to 15 people per group and 35 head of stock per party. • Use of weed free stock feed is required. • No wheeled carts or wheelbarrows.
    [Show full text]
  • Montana Official 2018-2019 Visitor Guide
    KALISPELL MONTANA OFFICIAL 2018-2019 VISITOR GUIDE #DISCOVERKALISPELL 888-888-2308 DISCOVERKALISPELL.COM DISCOVER KALISPELL TABLE OF CONTENTS 4 DISCOVER KALISPELL 6 GETTING HERE 7 GLACIER NATIONAL PARK 10 DAY HIKES 11 SCENIC DRIVES 12 WILD & SCENIC 14 QUICK PICKS 23 FAMILY TIME 24 FLATHEAD LAKE 25 EVENTS 26 LODGING 28 EAT & DRINK 32 LOCAL FLAVOR 35 CULTURE 37 SHOPPING 39 PLAN A MEETING 41 COMMUNITY 44 RESOURCES CONNECTING WITH KALISPELL To help with your trip planning or to answer questions during your visit: Kalispell Visitor Information Center Photo: Tom Robertson, Foys To Blacktail Trails Robertson, Foys To Photo: Tom 15 Depot Park, Kalispell, MT 59901 406-758-2811or 888-888-2308 DiscoverKalispellMontana @visit_Kalispell DiscoverKalispellMontana Discover Kalispell View mobile friendly guide or request a mailed copy at: WWW.DISCOVERKALISPELL.COM Cover Photo: Tyrel Johnson, Glacier Park Boat Company’s Morning Eagle on Lake Josephine www.discoverkalispell.com | 888-888-2308 3 DISCOVER KALISPELL WELCOME TO KALISPELL Photos: Tom Robertson, Kalispell Chamber, Mike Chilcoat Robertson, Kalispell Chamber, Photos: Tom here the spirit of Northwest Montana lives. Where the mighty mountains of the Crown of the Continent soar. Where the cold, clear Flathead River snakes from wild lands in Glacier National Park and the Bob WMarshall Wilderness to the largest freshwater lake in the west. Where you can plan ahead for a trip of wonder—or let each new moment lead your adventures. Follow the open road to see what’s at the very end. Lay out the map and chart a course to its furthest corner. Or explore the galleries, museums, and shops in historic downtown Kalispell—and maybe let the bakery tempt you into an unexpected sweet treat.
    [Show full text]
  • NW Montana Joint Information Center Fire Update August 27, 2003, 10:00 AM
    NW Montana Joint Information Center Fire Update August 27, 2003, 10:00 AM Center Hours 6 a.m. – 9 p.m. Phone # (406) 755-3910 www.fs.fed.us/nwacfire Middle Fork River from Bear Creek to West Glacier is closed. Stanton Lake area is reopened. Highway 2 is NOT closed. North Fork road from Glacier Rim to Polebridge is open but NO stopping along the road and all roads off the North Fork remain closed. The Red Meadows Road remains closed to the public. The Going-to-the-Sun Highway is open. Road #895 along the west side of Hungry Horse Reservoir is CLOSED to the junction of Road #2826 (Meadow Creek Road). Stage II Restrictions are still in effect. Blackfoot Lake Complex Includes the Beta Lake-Doris Ridge fires, Ball fire, and the Blackfoot lake complex of fires located on Flathead National Forest, south of Hungry Horse; Hungry Horse, MT. Fire Information (406) 755-3910, 892-0946. Size: unknown due to weather yesterday, a recon flight is planned for today Status: Doris Mountain Fire was active yesterday with runs in a northeast direction. Burnout operations were successful on the Beta Lake Fire. Ball Fire was very active and lines did not hold. The other fires within the complex were active but due to weather conditions information is still incoming. Road #895 from Highway 2 along the west side of Hungry Horse Reservoir to junction of Road #2826 is closed. Campgrounds along the Westside of the reservoir are also closed. Emery Campground is closed. Outlook: Burnout operations will continue today on the Beta Lake and Doris Mountain Fires as long as conditions allow.
    [Show full text]
  • Going-To-The-Sun Road Historic District, Glacier National Park
    National Park Service Cultural Landscapes Inventory 2002 Going-to-the-Sun Road Historic District Glacier National Park Table of Contents Inventory Unit Summary & Site Plan Concurrence Status Geographic Information and Location Map Management Information National Register Information Chronology & Physical History Analysis & Evaluation of Integrity Condition Treatment Bibliography & Supplemental Information Going-to-the-Sun Road Historic District Glacier National Park Inventory Unit Summary & Site Plan Inventory Summary The Cultural Landscapes Inventory Overview: CLI General Information: Purpose and Goals of the CLI The Cultural Landscapes Inventory (CLI), a comprehensive inventory of all cultural landscapes in the national park system, is one of the most ambitious initiatives of the National Park Service (NPS) Park Cultural Landscapes Program. The CLI is an evaluated inventory of all landscapes having historical significance that are listed on or eligible for listing on the National Register of Historic Places, or are otherwise managed as cultural resources through a public planning process and in which the NPS has or plans to acquire any legal interest. The CLI identifies and documents each landscape’s location, size, physical development, condition, landscape characteristics, character-defining features, as well as other valuable information useful to park management. Cultural landscapes become approved CLIs when concurrence with the findings is obtained from the park superintendent and all required data fields are entered into a national
    [Show full text]
  • FERC Project No. 2058
    FERC Project No. 2058 Idaho Tributary Habitat Acquisition and Fishery Enhancement Program Appendix A As approved by the Management Committee on 3/14/2017 2017 ANNUAL IMPLEMENTATION PLAN SUMMARY – APPENDIX A Clark Fork Project, FERC No. 2058 Cabinet Gorge and Noxon Rapids Hydroelectric Developments Title Idaho Tributary Habitat Acquisition and Fishery Enhancement Program Implementation Staff Lead Ken Bouwens, Idaho Department of Fish and Game, (208) 770-3766, [email protected] Background The purpose of this program is to offset the impacts of the power peaking operation of the Cabinet Gorge Project to native salmonids through the restoration and enhancement of lower Clark Fork River and Lake Pend Oreille (LPO) tributary watersheds, fishery monitoring and management support, and a public education and enforcement initiative focused on Bull Trout and their associated habitats in Idaho. Outlined below is the 2017 annual implementation plan for Idaho Tributary Habitat Acquisition and Enhancement and Fish Resource Monitoring, Enhancement, and Management portions of this program. The public education and enforcement component of this program is described in Appendix D of the Clark Fork Settlement Agreement (CFSA). In addition, other CFSA appendices also support watershed and native salmonid protection, restoration, and enhancement (e.g., Fish Passage/Native Salmonid Restoration Plan, Watershed Council Program), and thereby augment the efforts to be initiated under this program. 2017 Project Plans Tributary Habitat Acquisition and Enhancement Fund 1. Habitat Restoration Scoping Allocation 2. Idaho Land Conservation Strategy 3. Habitat Restoration Maintenance and Monitoring Allocation 4. Grouse Creek Resurvey 5. Lightning Creek Large Woody Debris and Recruitment Project 6. Twin Creek Restoration Revegetation 7.
    [Show full text]
  • Restoration Plan for Bull Trout in the Clark Fork River Basin and Kootenai River Basin Montana
    RESTORATION PLAN FOR BULL TROUT IN THE CLARK FORK RIVER BASIN AND KOOTENAI RIVER BASIN MONTANA Prepared by: MONTANA BULL TROUT RESTORATION TEAM FOR GOVERNOR MARC RACICOT c/o Montana Department of Fish,Wildlife and Parks 1420 East Sixth Avenue Helena, Montana 59601 JUNE 2000 RESTORATION PLAN FOR BULL TROUT IN THE CLARK FORK RIVER BASIN AND KOOTENAI RIVER BASIN, MONTANA This restoration plan for bull trout in Montana was developed collaboratively by, and is supported by, the Montana Bull Trout Restoration Team, appointed by Governor Marc Racicot. Restoration Team members represented the organizations listed below. All parties to this restoration plan recognize that they each have specific statutory responsibilities that cannot be abdicated, particularly with respect to the management and conservation of fish and wildlife, their habitat, and the management, development and allocation of land and water resources. Nothing in this plan is intended to abrogate any of the parties' respective responsibilities. Each party has final approval authority for any activities undertaken as a result of this agreement on the lands owned or administered by them. The Restoration Plan was developed by the Montana Bull Trout Restoration Team, represented by the following organizations and agencies (arranged in alphabetical order by agency/organization): American Fisheries Society Bonneville Power Administration Confederated Salish and Kootenai Tribes Montana Department of Fish, Wildlife and Parks Montana Department of Natural Resources and Conservation National
    [Show full text]
  • Summits on the Air – ARM for Canada (Alberta – VE6) Summits on the Air
    Summits on the Air – ARM for Canada (Alberta – VE6) Summits on the Air Canada (Alberta – VE6/VA6) Association Reference Manual (ARM) Document Reference S87.1 Issue number 2.2 Date of issue 1st August 2016 Participation start date 1st October 2012 Authorised Association Manager Walker McBryde VA6MCB Summits-on-the-Air an original concept by G3WGV and developed with G3CWI Notice “Summits on the Air” SOTA and the SOTA logo are trademarks of the Programme. This document is copyright of the Programme. All other trademarks and copyrights referenced herein are acknowledged Page 1 of 63 Document S87.1 v2.2 Summits on the Air – ARM for Canada (Alberta – VE6) 1 Change Control ............................................................................................................................. 4 2 Association Reference Data ..................................................................................................... 7 2.1 Programme derivation ..................................................................................................................... 8 2.2 General information .......................................................................................................................... 8 2.3 Rights of way and access issues ..................................................................................................... 9 2.4 Maps and navigation .......................................................................................................................... 9 2.5 Safety considerations ..................................................................................................................
    [Show full text]
  • (Ca. 1.45 Ga), WESTERN NORTH AMERICA: PSEUDOFOSSILS, FACIES, TIDES and SYNDEPOSITIONAL TECTONIC ACTIVITY in a MESOPROTEROZOIC INTRACRATONIC BASIN
    SEDIMENTARY, MICROBIAL AND DEFORMATION FEATURES IN THE LOWER BELT SUPERGROUP (ca. 1.45 Ga), WESTERN NORTH AMERICA: PSEUDOFOSSILS, FACIES, TIDES AND SYNDEPOSITIONAL TECTONIC ACTIVITY IN A MESOPROTEROZOIC INTRACRATONIC BASIN A Thesis Submitted to the College of Graduate and Postdoctoral Studies In Partial Fulfillment of the Requirements For the Degree of Doctor of Philosophy In the Department of Geological Sciences University of Saskatchewan Saskatoon By Roy Gregory Rule © Copyright Roy Gregory Rule, July, 2020. All rights reserved. PERMISSION TO USE In presenting this thesis in partial fulfilment of the requirements for a Postgraduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor or professors who supervised my thesis work or, in their absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis. Requests for permission to copy or to make other uses of materials in this thesis in whole or part should be addressed to: Head of the Geological Sciences Geology Building University of Saskatchewan Saskatoon, Saskatchewan S7N 5E2, Canada Or Dean College of Graduate and Postdoctoral Studies University of Saskatchewan 116 Thorvaldson Building, 110 Science Place Saskatoon, Saskatchewan S7N 5C9, Canada i ABSTRACT Sedimentary, microbial and deformation features in the lower Belt Supergroup (ca.
    [Show full text]
  • The Missoula Flood
    THE MISSOULA FLOOD Dry Falls in Grand Coulee, Washington, was the largest waterfall in the world during the Missoula Flood. Height of falls is 385 ft [117 m]. Flood waters were actually about 260 ft deep [80 m] above the top of the falls, so a more appropriate name might be Dry Cataract. KEENAN LEE DEPARTMENT OF GEOLOGY AND GEOLOGICAL ENGINEERING COLORADO SCHOOL OF MINES GOLDEN COLORADO 80401 2009 The Missoula Flood 2 CONTENTS Page OVERVIEW 2 THE GLACIAL DAM 3 LAKE MISSOULA 5 THE DAM FAILURE 6 THE MISSOULA FLOOD ABOVE THE ICE DAM 6 Catastrophic Flood Features in Eddy Narrows 6 Catastrophic Flood Features in Perma Narrows 7 Catastrophic Flood Features at Camas Prairie 9 THE MISSOULA FLOOD BELOW THE ICE DAM 13 Rathdrum Prairie and Spokane 13 Cheny – Palouse Scablands 14 Grand Coulee 15 Wallula Gap and Columbia River Gorge 15 Portland to the Pacific Ocean 16 MULTIPLE MISSOULA FLOODS 17 AGE OF MISSOULA FLOODS 18 SOME REFERENCES 19 OVERVIEW About 15 000 years ago in latest Pleistocene time, glaciers from the Cordilleran ice sheet in Canada advanced southward and dammed two rivers, the Columbia River and one of its major tributaries, the Clark Fork River [Fig. 1]. One lobe of the ice sheet dammed the Columbia River, creating Lake Columbia and diverting the Columbia River into the Grand Coulee. Another lobe of the ice sheet advanced southward down the Purcell Trench to the present Lake Pend Oreille in Idaho and dammed the Clark Fork River. This created an enormous Lake Missoula, with a volume of water greater than that of Lake Erie and Lake Ontario combined [530 mi3 or 2200 km3].
    [Show full text]
  • Glacier National Park Geologic Resource Evaluation Report
    National Park Service U.S. Department of the Interior Geologic Resources Division Denver, Colorado Glacier National Park Geologic Resource Evaluation Report Glacier National Park Geologic Resource Evaluation Geologic Resources Division Denver, Colorado U.S. Department of the Interior Washington, DC Table of Contents List of Figures .............................................................................................................. iv Executive Summary ...................................................................................................... 1 Introduction ................................................................................................................... 3 Purpose of the Geologic Resource Evaluation Program ............................................................................................3 Geologic Setting .........................................................................................................................................................3 Glacial Setting ............................................................................................................................................................4 Geologic Issues............................................................................................................. 9 Economic Resources..................................................................................................................................................9 Mining Issues..............................................................................................................................................................9
    [Show full text]