DOCSLIB.ORG

Terwillegar Park Footbridge Edmonton, Alberta CHRISTINA RIVER BRIDGE Wilmington, Delaware

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Terwillegar Park Footbridge Edmonton, Alberta CHRISTINA RIVER BRIDGE Wilmington, Delaware THE CONCRETE BRIDGE MAGAZINE WINTER 2020 www.aspirebridge.org Terwillegar Park Footbridge Edmonton, Alberta CHRISTINA RIVER BRIDGE Wilmington, Delaware MOORES MILL BRIDGE Auburn, Alabama MAIN STREET AND GRAND BOULEVARD BRIDGES Kansas City, Missouri Permit No. 567 No. Permit Lebanon Junction, KY Junction, Lebanon Postage Paid Postage Presorted Standard Presorted FOCUS Full-Service Engineering Stantec’s bridge division serves clients’ bridge needs from conceptual design through inspection, maintenance, and rehabilitation, using whatever techniques are required. by Craig A. Shutt Stantec is recognized around the world for providing a wide range of architectural and engineering solutions. Its North American bridge division enhances that reputation by providing a full complement of bridge engineering services, from concept to rehabilitation. “In the bridge sector, we pride ourselves on being a full-service company in all aspects of bridges,” says Tony Hunley, vice president in Stantec’s bridge sector. “We’re not just known as new-bridge designers. We do it all.” Reed Ellis, vice president and bridge sector leader adds, “One thing that sets us apart is the complete range of bridge engineering services we provide our clients through all stages of a bridge’s life cycle. That includes inception, planning, conceptual design, design, and construction. It continues through regular and rope-access inspections, maintenance, repair, rehabilitation, load rating, and strengthening. We also implement bridge management systems, help bridge owners manage and prioritize repairs, and decommission structures.” Given this range of services, Stantec establishes strong ties with departments of transportation (DOTs) and other owners that last after a specific project ends. “We form long-standing relationships, becoming a partner and consultant over the long term on that structure,” says Ellis. Expanding Inspection Services Bridge inspections have been a recent area of growth for Stantec. “In the past 10 years, we’ve seen a considerable Using rope access, Stantec performed the first routine inspection on the 1896-ft-long increase globally in owners wanting Mike O’Callaghan–Pat Tillman Memorial Bridge in 2013. The bridge is 870 ft above to inspect their bridges to improve the Colorado River. All Photos: Stantec. their asset management,” says Ellis. 6 | ASPIRE Winter 2020 The Terwillegar Park Footbridge consists of 86 precast concrete deck panels supported by bearing cables cast into the deck with 7.3-ksi high-performance cast- in-place concrete. The Terwillegar Park Footbridge over the North Saskatchewan River is Canada’s Frequently, inspections require a variety longest stress-ribbon bridge, spanning 859 ft 6 in. The structure is the first of its kind of approaches, including rope access. in Edmonton, Alberta, and the northernmost bridge of this type in the world. “In the past 10 the Society of Professional Rope Access Hunley currently is leading Stantec’s years, we’ve seen a Technicians, Ellis notes. “It was a work on a major bridge rehabilitation considerable increase complex, hands-on inspection.” and replacement initiative for the Kentucky Transportation Cabinet. To globally in owners The company is evaluating new reduce the number of substandard wanting to inspect their inspection tools, including drones. bridges, which reached more than 1000 “We’re looking internally to see how in 2018, Kentucky launched Bridging bridges to improve their we can best utilize them to provide the Kentucky, an ambitious six-year, $700 asset management.” appropriate level of inspection for each million program designed to restore bridge,” says Ellis. “They definitely show state and locally owned bridges. “Our philosophy for inspections is to promise, but we have to determine use the most effective accessibility what value is there and if we can use Stantec is serving as the prime techniques necessary to ensure we them effectively.” consultant, along with QK4 Inc. and see everything. We often combine AECOM as lead partners. The project mechanical access equipment, such as Rehabilitation Work team also includes 22 engineering, underbridge and snooper trucks, with The growth in inspections has in turn environmental, and specialty firms. rope-access techniques, especially on led to an increase in rehabilitation work. “We are performing a full-service effort: major bridges,” says Ellis. “Often, DOTs are looking to extend the program management, evaluation, service lives of their existing bridges asset management prioritization, Such inspections can create challenging rather than replacing them completely,” rehabilitation or replacement designs, situations. This was the case during the Ellis says. and construction-phase support,” inspection of the 1896-ft-long Mike Hunley says. The firms are taking a O’Callaghan–Pat Tillman Memorial Bridge decks are usually the first area programmatic approach, bundling Bridge, 870 ft above the Colorado River targeted for replacement, but joints bridges by type and location rather than and downstream from the Hoover Dam. typically receive the most attention. letting contracts bridge by bridge, and Working for the Nevada Department “Joints are the number-one challenge they are using both traditional design- of Transportation, Stantec provided the for existing bridges, because they bid-build and design-build contracts. first routine inspection of the massive can lead to deterioration of the structure while under live traffic in underlying girders and substructure A customized life-cycle cost evaluation 2013, and then inspected it every other piers and caps. The biggest part of was performed for each bridge year through 2019. our rehabilitation work is addressing considered for rehabilitation or deterioration under the joints,” replacement, which determined that In 2019, the inspection crew finished its says Ellis. To aid that work, Stantec about 40% of the structures could work on the concrete, open-spandrel incorporates new patching techniques be rehabilitated. As of August 2019, arch structure in only six days, using and protections, such as galvanic- Kentucky had awarded $113.8 million rope access. The structural engineering anode and other active cathodic in construction contracts for 190 climbing team followed practices of protection systems. bridges, and its costs were more than ASPIRE Winter 2020 | 7 in Edmonton and the northernmost bridge of this type in the world. “This bridge structure was only possible through advancements in concrete products,” says Ellis, who served as project leader. “The City challenged engineering firms to propose a solution that would be innovative, have a low impact on the river valley both environmentally and visually, and then achieve these goals within a tight budget and timelines.” The stress-ribbon bridge achieved the goals by using precast, prestressed concrete. “It allowed for efficient and cost-effective construction, producing a slender and elegant bridge form.” The precast concrete deck panel design combined with the use of high-performance cast-in-place concrete allowed the Terwillegar Park Footbridge to maintain a thin deck The superstructure consists of 86 precast profile that minimized the environmental and visual impact of the bridge on the North concrete deck panels and is supported Saskatchewan River valley. by bearing cables cast into the deck 20% below anticipated budgets. By major new bridge projects, including with 7.3-ksi high-performance cast- mid-2020, contracts for more than 450 projects using alternative project delivery in-place concrete. This design allowed bridges will be let. methods, such as design-build and the panels to be cast only 16.3 in. public-private partnerships. thick. “This option was the most Kentucky’s rehabilitation projects are economical and best met the City’s designed for a minimum design “DOTs have tight budgets, and while vision and sustainability goals. And it service life of 30 years. Concrete they are stretching their resources, was delivered on schedule and within repair methods for these projects will they also have to address their biggest budget.” involve determining the best patching problems, and that often means approach, resolving the source of the their largest or most complex bridges Design-build delivery methods often deterioration, and proactively protecting or major corridor improvements that provide the best approach for large new and existing concrete surfaces from include a large number of bridges,” says projects, Hunley notes, as they allow water and chloride infiltration by sealing Hunley. “What we don’t see as much the design team to leverage their repaired substructure concrete with a right now is the average, routine bridge expertise and collaborate with the high-quality epoxy-coating system. replacement. There are far fewer of contractor to create efficiencies. That those being done individually.” approach worked well for the U.S. Since the launch of Bridging Kentucky, Route 460 Connector project on the more than 150 additional bridges have “What we don’t Virginia-Kentucky border through the been determined to be substandard Appalachian Mountains. The project due to condition or necessary weight see as much right now included the Grassy Creek Twin Bridges, restrictions. “Kentucky was slowly losing is the average, routine two six-span, 1733-ft-long structures ground to deterioration faster than it that feature a four-span cast-in-place could replace bridges,” Hunley says. “By bridge replacement. segmental concrete box-girder unit
Load more

Recommended publications
  • Fisheries Barriers in Native Trout Drainages
    Alberta Conservation Association 2018/19 Project Summary Report Project Name: Fisheries Barriers in Native Trout Drainages Fisheries Program Manager: Peter Aku Project Leader: Scott Seward Primary ACA Staff on Project: Jason Blackburn, David Jackson, and Scott Seward Partnerships Alberta Environment and Parks Environment and Climate Change Canada Key Findings • We compiled existing barrier location information within the Peace River, Athabasca River, North Saskatchewan River, and Red Deer River basins into a centralized database. • We catalogued fish habitat and community data for the Narraway River watershed for use in a population restoration feasibility framework. • We identified 107 potential barrier locations within the Narraway River watershed, using Google Earth ©, which will be refined using valley confinement modeling and validated with ground truthing in 2019. Introduction Invasive species pose one of the greatest threats to Alberta native trout species, through hybridization, competition, and displacement. These threats are partially mediated by the presence of natural headwater fish-passage barriers, namely waterfalls, that impede upstream 1 invasions. In Alberta, several sub-populations of native trout remain genetically pure primarily because of waterfalls. Identification and inventory of waterfalls in the Peace River, Athabasca River, North Saskatchewan River, and Red Deer River basins isolating pure populations and their habitats is critical to inform population recovery and build implementation strategies on a stream by stream basis. For example, historical stocking of non-native trout to the Narraway River watershed may be endangering native bull trout and Arctic grayling. Non-native cutthroat trout, rainbow trout, and brook trout have been stocked in the Torrens River, Stetson Creek, and Two Lakes, all of which have connectivity to the Narraway River.
    [Show full text]
  • Land Use, Climate Change and Ecological Responses in the Upper
    Land use, climate change and ecological responses in the Upper North 1 Saskatchewan and Red Deer River Basins: A scientific assessment Land use, climate change and ecological responses in the Upper North Saskatchewan and Red Deer River Basins: A scientific assessment Dan Farr, Colleen Mortimer, Faye Wyatt, Andrew Braid, Charlie Loewen, Craig Emmerton, Simon Slater Cover photo: Wayne Crocker This publication can be found at: open.alberta.ca/publications/9781460140697. Comments, questions, or suggestions regarding the content of this document may be directed to: Ministry of Environment and Parks, Environmental Monitoring and Science Division 10th Floor, 9888 Jasper Avenue NW, Edmonton, Alberta, T5J 5C6 Tel: 780-229-7200 Toll Free: 1-844-323-6372 Fax: 780-702-0169 Email: [email protected] Media Inquiries: [email protected] Website: environmentalmonitoring.alberta.ca Recommended citation: Farr. D., Mortimer, C., Wyatt, F., Braid, A., Loewen, C., Emmerton, C., and Slater, S. 2018. Land use, climate change and ecological responses in the Upper North Saskatchewan and Red Deer River Basins: A scientific assessment. Government of Alberta, Ministry of Environment and Parks. ISBN 978-1-4601-4069-7. Available at: open.alberta.ca/publications/9781460140697. © Her Majesty the Queen in Right of Alberta, as represented by the Minister of Alberta Environment and Parks, 2018. This publication is issued under the Open Government Licence - Alberta open.alberta.ca/licence. Published September 2018 ISBN 978-1-4601-4069-7 Land use, climate change and ecological responses in the Upper North 2 Saskatchewan and Red Deer River Basins: A scientific assessment Acknowledgements The authors are grateful to the external reviewers for providing their technical reviews and feedback, which have enhanced this work.
    [Show full text]
  • South Saskatchewan River Basin Adaptation to Climate Variability Project
    South Saskatchewan River Basin Adaptation to Climate Variability Project Climate Variability and Change in the Bow River Basin Final Report June 2013 This study was commissioned for discussion purposes only and does not necessarily reflect the official position of the Climate Change Emissions Management Corporation, which is funding the South Saskatchewan River Basin Adaptation to Climate Variability Project. The report is published jointly by Alberta Innovates – Energy and Environment Solutions and WaterSMART Solutions Ltd. This report is available and may be freely downloaded from the Alberta WaterPortal website at www.albertawater.com. Disclaimer Information in this report is provided solely for the user’s information and, while thought to be accurate, is provided strictly “as is” and without warranty of any kind. The Crown, its agents, employees or contractors will not be liable to you for any damages, direct or indirect, or lost profits arising out of your use of information provided in this report. Alberta Innovates – Energy and Environment Solutions (AI-EES) and Her Majesty the Queen in right of Alberta make no warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information contained in this publication, nor that use thereof infringe on privately owned rights. The views and opinions of the author expressed herein do not necessarily reflect those of AI-EES or Her Majesty the Queen in right of Alberta. The directors, officers, employees, agents and consultants of AI-EES and the Government of Alberta are exempted, excluded and absolved from all liability for damage or injury, howsoever caused, to any person in connection with or arising out of the use by that person for any purpose of this publication or its contents.
    [Show full text]
  • North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015
    North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015 The Alberta Conservation Association is a Delegated Administrative Organization under Alberta’s Wildlife Act. North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015 Mike Rodtka, Chad Judd and Andrew Clough Alberta Conservation Association 101 – 9 Chippewa Road Sherwood Park, Alberta, Canada T8A 6J7 Report Editors PETER AKU KELLEY KISSNER Alberta Conservation Association 50 Tuscany Meadows Cr. NW 101 – 9 Chippewa Rd. Calgary, AB T3L 2T9 Sherwood Park, AB T8A 6J7 Conservation Report Series Type Data ISBN: 978-0-9949118-3-4 Disclaimer: This document is an independent report prepared by Alberta Conservation Association. The authors are solely responsible for the interpretations of data and statements made within this report. Reproduction and Availability: This report and its contents may be reproduced in whole, or in part, provided that this title page is included with such reproduction and/or appropriate acknowledgements are provided to the authors and sponsors of this project. Suggested Citation: Rodtka, M., C. Judd, and A. Clough. 2016. North Saskatchewan River drainage, Fish Sustainability Index data gaps project, 2015. Data Report, D-2016-105, produced by Alberta Conservation Association, Sherwood Park, Alberta, Canada. 17 pp + App. Cover photo credit: David Fairless Digital copies of conservation reports can be obtained from: Alberta Conservation Association 101 – 9 Chippewa Rd. Sherwood Park, AB T8A 6J7 Toll Free: 1-877-969-9091 Tel: (780) 410-1998 Fax: (780) 464-0990 Email: [email protected] Website: www.ab-conservation.com i EXECUTIVE SUMMARY Alberta Environment and Parks Fish Sustainability Index is a standardized process of assessment that provides a landscape-level overview of fish sustainability within the province and enables broad-scale evaluation of management actions and land-use planning.
    [Show full text]
  • Water Quality in the South SK River Basin
    Water Quality in the South SK River Basin I AN INTRODUCTION TO THE SOUTH SASKATCHEWAN RIVER BASIN I.1 The Saskatchewan River Basin The South Saskatchewan River joins the North Saskatchewan River to form one of the largest river systems in western Canada, the Saskatchewan River System, which flows from the headwater regions along the Rocky Mountains of south-west Alberta and across the prairie provinces of Canada (Alberta, Saskatchewan, and Manitoba). The Prairie physiographic region is characterized by rich soils, thick glacial drift and extensive aquifer systems, and a consistent topography of broad rolling hills and low gradients which create isolated surface wetlands. In contrast, the headwater region of the Saskatchewan River (the Western Cordillera physiographic region) is dominated by thin mineral soils and steep topography, with highly connected surface drainage systems and intermittent groundwater contributions to surface water systems. As a result, the Saskatchewan River transforms gradually in its course across the provinces: from its oxygen-rich, fast flowing and highly turbid tributaries in Alberta to a meandering, nutrient-rich and biologically diverse prairie river in Saskatchewan. There are approximately 3 million people who live and work in the Saskatchewan River Basin and countless industries which operate in the basin as well, including pulp and paper mills, forestry, oil and gas extraction, mining (coal, potash, gravel, etc.), and agriculture. As the fourth longest river system in North America, the South Saskatchewan River Basin covers an incredibly large area, draining a surface of approximately 405 860 km² (Partners FOR the Saskatchewan River Basin, 2009). Most of the water that flows in the Saskatchewan River originates in the Rocky Mountains of the Western Cordillera, although some recharge occurs in the prairie regions of Alberta and Saskatchewan through year-round groundwater contributions, spring snow melt in March or April, and summer rainfall in May and early July (J.W.
    [Show full text]
  • Northern Leopard Frog Recovery Program
    Northern Leopard Frog Recovery Program Year 5 (2003) Kris Kendell In cooperation with: Northern Leopard Frog Recovery Program Year 5 (2003) This publication may be cited as: Kendell, K. 2004. Northern leopard frog recovery program: Year 5 (2003). Unpublished report, Alberta Conservation Association, Edmonton, AB. 14 pp. ii TABLE OF CONTENTS ACKNOWLEDGEMENTS....................................................................................................... iv EXECUTIVE SUMMARY ........................................................................................................ v 1.0 INTRODUCTION .................................................................................................................... 1 2.0 STUDY AREA ......................................................................................................................... 2 2.1 Egg mass collection and frog release sites........................................................................ 2 2.2 Captive rearing site ........................................................................................................... 2 3.0 METHODS ............................................................................................................................... 3 3.1 Captive rearing.................................................................................................................. 3 3.2 Marking............................................................................................................................. 3 3.3 Release (2003) .................................................................................................................
    [Show full text]
  • Water Quality in the North Saskatchewan River (NSR) in the Last 60 Years Has Undergone Some Substantial Changes
    North Saskatchewan River Water Quality By: Steph Neufeld, M.Sc., Watershed Specialist, EPCOR Water Services Biography Steph Neufeld was born and raised on a farm near the McLeod River where she spent many summer days and nights on her banks or navigating through her waters. She completed both her undergraduate and masters degrees at the University of Alberta. Her M.Sc. degree investigated the effects of landuse change on water quality and aquatic insect communities in Alberta streams. After graduation, Steph worked in consulting as an Aquatic Biologist for several years and currently works as a Watershed Specialist for EPCOR Water Services where her focus is on drinking water source water protection and watershed management. She presently sits on the Integrated Watershed Management Plan steering committee for the North Saskatchewan Watershed Alliance, is president of the Alberta Lake Management Society, and a board member for RiverWatch. Abstract Water quality in the North Saskatchewan River (NSR) in the last 60 years has undergone some substantial changes. Water quality monitoring was first initiated in the 1940s in response to pollution problems in the NSR associated with the City of Edmonton. At that time municipal wastewater, which included domestic sewage and industrial wastes, received only primary treatment. Untreated sewage was discharged directly into the river during rainfall events, garbage was disposed along the river bank, and accidental oil spills at industrial sites were not uncommon. With these pressures, it is not surprising that water quality was poor. These conditions persistent until about 1960 when waste management was improved and flow‐ regulation by the newly constructed Brazeau dam increased winter flows and assimilation capacity during this critical time.
    [Show full text]
  • Water and Energy in the North Saskatchewan River Watershed
    IntegratedIntegrated WatershedWatershed ManagementManagement PlanningPlanning forfor thethe NorthNorth SaskatchewanSaskatchewan RiverRiver BasinBasin Presented to AlbertaAlberta HealthHealth SeptSept 17,17, 20092009 OutlineOutline WaterWater forfor LifeLife (2003)(2003) NSWANSWA functionfunction WatershedWatershed PlanningPlanning InitiativesInitiatives LakeLake ManagementManagement ChallengesChallenges WaterWater forfor LifeLife (2003)(2003) OutcomesOutcomes:: ¾ SafeSafe drinkingdrinking waterwater ¾ HealthyHealthy aquaticaquatic ecosystemsecosystems ¾ ReliableReliable waterwater suppliessupplies KeyKey DirectionsDirections:: ¾ KnowledgeKnowledge andand researchresearch ¾ WaterWater conservationconservation ¾ PartnershipsPartnerships forfor watershedwatershed managementmanagement andand stewardshipstewardship WaterWater forfor LifeLife RenewalRenewal (2008)(2008) Nov.Nov. 16,16, 20082008 MinsterMinster RennerRenner confirmsconfirms originaloriginal WFLWFL outcomesoutcomes andand keykey directionsdirections WPACWPAC rolerole inin watershedwatershed assessmentassessment andand planningplanning rere-- confirmedconfirmed WatershedWatershed PlanningPlanning AdvisoryAdvisory CouncilsCouncils NineNine WPACsWPACs havehave beenbeen Hay River watershed appointedappointed inin AlbertaAlberta • MandateMandate:: Peace River Watershed Athabasca River ¾¾StateState ofof thethe Watershed WatershedWatershed ReportsReports Lesser Slave Lake Watershed Council Beaver River ¾¾IntegratedIntegrated WatershedWatershed Watershed Alliance North Saskatchewan
    [Show full text]
  • Alberta Census Subdivisions and Provincial Electoral Districts
    Alberta Electoral Districts and N O R T H W E S T T E R R II T O R II E S Census Subdivisions Kakisa River Buchan Charles Lake Lake 225 Beatty Lake Charles Lake e o tl l t r i fa Legend L f e u iv Thebathi B R Bistcho 196 Pet Provincial Electoral District boundary (2010) itot Riv er Lake r e iv R lo Wood Buffalo Census Subdivision (2011) a ff National Park u B of Canada !( City !( Town Improvement District No. 24 r e !( iv Wood Buffalo Village R y a H Slave Summer Village River k Indian Reserve Mackenzie County k Indian Settlement Upper Hay r Allison Lake Athabasca River 212 e v i R Bay 219 National Park e c a e Provincial Park Hay Lake Margaret P 74 Lake Zama Peace River Lakes Lake Hay Lake Baril Rivers 209 Lake Lake Claire Alberta Main Roads Child John d'Or Lake Prairie 215 Mamawi 164A Lake Hay River Rainbow Beaver Lake Ranch 163 Fox High r Lake ve Ri h Level Bushe Boyer 162 rc Coordinate System: NAD 1983 10TM AEP Forest Bi Projection: Transverse Mercator River 164 Fort Old 207 Vermilion Fort 217 Datum: North American 1983 173B 0 20 40 80 120 Tall Kilometers Cree 59 Chinc haga River 173A Fort ´ !( McMurray-Wood r Tall Buffalo e v i Cree R a r c 173 e s v Northern i River a a b R kw Mik a a Lights h c t s A County a Namur b a W River 174A Wood !( Buffalo Legend Lake Namur Fort 37 Edmonton-Manning Lake 174B Mackay 48 Notikewin 58 Athabasca-Sturgeon-Redwater Clear Fort ST.
    [Show full text]
  • Trends in Historical Annual Flows for Major Rivers in Alberta
    Trends in Historical Annual Flows for Major Rivers in Alberta FEBRUARY 2004 Environmental Assurance Environmental Monitoring and Evaluation Branch Evaluation and Reporting Section Water Assessment Team Trends in Historical Annual Flows for Major Rivers in Alberta Prepared for: Environmental Assurance Alberta Environment Prepared by: Michael Seneka, M.Eng., P.Eng. Hydrologist Approved by: Sal Figliuzzi, P.Eng. Water Program Manager February 2004 Pub. No: T/749 ISBN: 0-7785-3192-9 (Printed Edition) ISBN: 0-7785-3193-7 (On-Line Edition) Web Site: http://www3.gov.ab.ca/env/info/infocentre/publist.cfm Any comments, questions, or suggestions regarding the content of this document may be directed to: Environmental Monitoring and Evaluation Branch Alberta Environment 10th Floor, Oxbridge Place 9820 – 106th Street Edmonton, Alberta T5K 2J6 Phone: (780) 427-6278 Fax: (780) 422-6712 Additional copies of this document may be obtained by contacting: Information Centre Alberta Environment Main Floor, Oxbridge Place 9820 – 106th Street Edmonton, Alberta T5K 2J6 Phone: (780) 944-0313 Fax: (780) 427-4407 Email: [email protected] EXECUTIVE SUMMARY This report presents an overview of the past and present streamflow volumes of major rivers in Alberta. The status of water resources in the Province has been discussed in various forums given recent drought conditions. As well, questions have been raised about consumption patterns and the future sustainability of Alberta’s water resources under the potential impacts of climate change. This report is not intended to provide future predictions or scenarios, but instead will provide a context for understanding the current state of the resource.
    [Show full text]
  • Spatial and Temporal Patterns of Suspended-Sediment Yield in the Saskatchewan River Basin" (1988)
    Western University Scholarship@Western Geography Publications Geography Department 9-1988 Spatial and Temporal Patterns of Suspended- Sediment Yield in the Saskatchewan River Basin Peter Ashmore University of Western Ontario T J. Day Sediment Survey Section, Water Survey of Canada Follow this and additional works at: https://ir.lib.uwo.ca/geographypub Part of the Geography Commons Citation of this paper: Ashmore, Peter and Day, T J., "Spatial and Temporal Patterns of Suspended-Sediment Yield in the Saskatchewan River Basin" (1988). Geography Publications. 289. https://ir.lib.uwo.ca/geographypub/289 Spatial and temporal patterns of suspended-sediment yield in the Saskatchewan River basin P. E. ASHMORE' Geography Department, University of Saskatchewan, Saskatoon, Sask., Canada SZN OW0 I AND T. J. DAY Sediment Survey Section, Water Survey of Canada, Water Resources Branch, Inland Waters/Lands, Ottawa, Ont., Canada KIA OE7 Received October 5, 1987 Revision accepted January 6, 1988 Long-term suspended-sediment concentration and load records are available for 23 Water Survey of Canada sediment- monitoring stations in the Saskatchewan River basin, where the drainage areas range from 10 to over 300000 km2. Mean annual sediment yield is greatest in the western Alberta Plains along the Oldman and Red Deer rivers (over 100 t km-' year-') and tends to increase downstream along the North and South Saskatchewan rivers until major reservoirs in Saskatchewan intervene. Average sediment concentration shows a pattern of variation similar to that of yield. Temporal aspects of' suspended-sediment transport vary along the drainage network. The range and skewness of the yield-duration and concentra- tion-duration curves are greater in the intermediate-size basins close to the Rocky Mountains and in two small basins with Prairie sources than they are in the large Prairie streams with mountain sources and the glacier-fed upper North Saskatchewan River.
    [Show full text]
  • North Saskatchewan and Ram Rivers Bull Trout Spawning Stock Assessment, Alberta, 2007 - 2009
    North Saskatchewan and Ram Rivers Bull Trout Spawning Stock Assessment, Alberta, 2007 - 2009 CONSERVATION REPORT SERIES The Alberta Conservation Association is a Delegated Administrative Organization under Alberta’s Wildlife Act. CONSERVATION REPORT SERIES 25% Post Consumer Fibre When separated, both the binding and paper in this document are recyclable North Saskatchewan and Ram Rivers Bull Trout Spawning Stock Assessment, Alberta, 2007 ‐ 2009 Mike Rodtka1, Chad Judd1 and Kevin Fitzsimmons2 1 Alberta Conservation Association #4919, 51 Street Rocky Mountain House, Alberta, Canada T4T 1A3 2 Alberta Conservation Association Box 1420 Cochrane, Alberta, Canada T4C 1B4 Report Editors PETER AKU GLENDA SAMUELSON Alberta Conservation Association 2123 Crocus Road NW #101, 9 Chippewa Rd Calgary AB T2L 0Z7 Sherwood Park AB T8A 6J7 Conservation Report Series Type Technical ISBN printed: 978‐0‐7785‐9051‐4 ISBN online: 978‐0‐7785‐9052‐1 Publication No.: T/229 Disclaimer: This document is an independent report prepared by the Alberta Conservation Association. The authors are solely responsible for the interpretations of data and statements made within this report. Reproduction and Availability: This report and its contents may be reproduced in whole, or in part, provided that this title page is included with such reproduction and/or appropriate acknowledgements are provided to the authors and sponsors of this project. Suggested Citation: Rodtka. M., C. Judd, and K. Fitzsimmons. 2010. North Saskatchewan and Ram Rivers Bull Trout Spawning Stock Assessment,
    [Show full text]