canal and dam safety

WATER ACT

WATER (MINISTERIAL) REGULATIONPART 6

DAM AND CANAL SAFETY

GUIDELINES

Prepared by:Dam Safety andWater Projects BranchAlberta Environmental Protection8th Floor, Oxbridge Place9820-106 StreetEdmonton, T5K 2J6(780) 422-1355Branch E-mail address: AEP-Dam [email protected]

Note: These guidelines replace those published in December 1991.

Publication No. T/444ISBN: 0-7785-0587-1

THE WATER ACT

DAM AND CANAL SAFETYGUIDELINES

TABLE OF CONTENTS

INTRODUCTION............................................................................................................................................................1

LICENSING.......................................................................................................................................................................1

DELEGATION OF POWERS........................................................................................................................................2

UNDERSTANDING THE REGULATION................................................................................................................2

APPLYING FOR A LICENCE......................................................................................................................................2

REQUIRED INFORMATION TO BE SUBMITTED WITH AN APPLICATION FOR A LICENCE..........2

- LIST A..............................................................................................................................................................................2

ADDITIONAL INFORMATION..................................................................................................................................4

- LIST B..............................................................................................................................................................................4

EXISTING STRUCTURES ............................................................................................................................................4

APPENDIX I - DEFINITIONS......................................................................................................................................6

APPENDIX II - SPILLWAYS .......................................................................................................................................6

TABLE 1........................................................................................................................................................................8

TABLE 2........................................................................................................................................................................9

APPENDIX III - DESIGN.............................................................................................................................................10

APPENDIX IV - INSTRUMENTATION..................................................................................................................10

APPENDIX V - DIVERSION......................................................................................................................................11

APPENDIX VI - OPERATION AND MAINTENANCE MANUAL..................................................................11

APPENDIX VII - EMERGENCY PREPAREDNESS.............................................................................................11

INUNDATION STUDIES........................................................................................................................................11

EMERGENCY PREPAREDNESS .........................................................................................................................11

GENERAL INFORMATION.......................................................................................................................................13

OTHER PUBLICATIONS BY DAM SAFETY AND WATER PROJECTS BRANCH..................................13

REFERENCES................................................................................................................................................................14

RELATED WEB SITES................................................................................................................................................15

DAM AND CANAL SAFETY GUIDELINES

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THE WATER ACT

DAM AND CANAL SAFETYGUIDELINES

INTRODUCTION

On September l9, l978, Alberta becamethe first province to establish a Dam andCanal Safety Regulation.On January 1, 1999 the Water Act cameinto force. The Dam and Canal SafetyRegulations under Water Resources Actwere incorporated into the Water(Ministerial) Regulation Part 6.

The purpose of the Regulation is topromote the safety of dams and canalsprimarily to prevent loss of life, andsecondly, economic losses due to failureof these structures.

These Guidelines provide information asto how the Regulation is administered bythe Dam Safety and Water ProjectsBranch of Alberta EnvironmentalProtection. The Guidelines wereoriginally published in February 1979and updated in January 1983.

LICENSING

Before any water retaining structure isconstructed the person, agency orcompany undertaking the projectrequires authorization pursuant to Part 4of the Water Act. To obtainauthorization, the applicant must applyto the Director. The application willstate the quantity of water that can bediverted and used and include plans ofthe project (drawings andspecifications).

The Director has certain requirementsbefore an application can be processed.Further details can be obtained from theDepartment Regional office.

The Director will always refer theapplication to the Dam Safety and WaterProjects Branch for review and advice ifthe structure meets or exceeds thefollowing criteria.

In the case of a dam, the structure shouldbe at least 2.5 meters high and have atleast 30,000 cubic meters or more inreservoir capacity.

In the case of a canal, the conveyingcapacity should be 15 cubic meters ormore per second and the embankmentsshould be at least 2.5 high.

Other structures may be referred at thediscretion of the Director.

For the Dam Safety and Water ProjectsBranch to complete a review, certainadditional information is required asdiscussed later in the Guidelines.

The approval holder is responsible forthe construction of a new structure, andthe operation and maintenance of anexisting structure in a manner such thatthe structure is, and remains, stable andsafe. The approval holder is alsoresponsible for the cost of any repairwork required to meet the requirementsof the regulation and is expected to keep


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any works in good condition.

DELEGATION OF POWERS

Some of the powers of the Minister inthe Regulation have been delegated tothe Dam Safety and Water ProjectBranch Head. Therefore, a notification,direction, or other order prescribed in theRegulation signed by the Dam Safetyand Water Projects Branch Head has thesame authority as if it had been signedby the Minister.

UNDERSTANDING THEREGULATION

Part 6 (Dam and Canal Safety) of theWater (Ministerial) Regulation must beread in conjunction with the Water Actto obtain a full understanding of thelegislation. Copies of the Act andRegulation are available from theQueen's Printer.

APPLYING FOR A LICENCE

The Director will refer the application tothe Head of the Dam Safety and WaterProjects Branch before granting orrefusing an application for a licence orapproval or for an amendment of anapproval involving the construction,repair, improvement, change, alteration,replacement, suspension, abandonment,or removal of a dam or canal as definedin the Part 6 of the Water (Ministerial)Regulations.

When an application is referred to theDam Safety and Water Projects Branch,the drawings and other documentsrelated to the proposed structure will be

evaluated to ensure that the structure hasbeen fully detailed and sufficient designanalysis has been undertaken by theapplicant and/or the applicant'sengineering representative.

To enable the Dam Safety and WaterProjects Branch to evaluate the proposedstructure, the following list ofinformation (List A) must generally beprovided when filing an application withthe Director. List A is meant to cover alltypes of structures. Variations in thecontent of the information is left to thediscretion of the individual engineersubmitting the information.

While the Dam Safety and WaterProjects Branch does not expect toreceive highly detailed information oneach project, inevitable delay will occurin the processing of an application ifinsufficient information is presented.Applicants should contact the DamSafety and Water Projects Branch priorto submission of an application thatinvolves a dam or canal affected by theAct to ensure that the applicant has agood understanding of what is requiredto meet the regulation and what the DamSafety and Water Projects Branchrequires to review the project.

REQUIRED INFORMATION TO BESUBMITTED WITH ANAPPLICATION FOR A LICENCE- LIST A

l. Key plan showing principaltopographic features of the drainagearea (watershed) and downstreamchannel at an appropriate scale.

2. General plan of dam and adjacentareas at an appropriate contour


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interval showing location of allappurtenant structures and referencebench marks.

3. General plan of dam and reservoir atan appropriate scale showing borrowareas, extent of reservoir, watersurface and reservoir capacitycurves.

4. Centerline profile of dam showingthe following:

a) crest elevationb) FSL (full supply level) and

MWL (maximum water level)c) natural ground surfaced) depth and nature of underlying

strata as shown by test pits orborings

e) probable depth of excavation forfoundation or cut-off

f) location and dimensions ofconduit outlets.

5. Typical cross-section(s) of dam atmaximum section showing:

a) embankment slopes anddimensions

b) position, dimensions and materialof any cut-off

c) position and dimensions of anyzoned material, filter layers, rocktoes, etc.

d) nature and dimensions of anyslope protection

6. Gradation curves of granular filtermaterials and the base material beingprotected.

7. Calculations showing analysis ofembankment stability including theeffect of rapid drawdown of thereservoir.

8. Details of the hydrologic studiescarried out to establish the size of thespillway(s).

9. Detailed plan(s) of spillwayshowing:

a) width and shape of crestb) length of spillway (centerline profile)c) grade and shape of approach and

discharge channelsd) layout of upstream and downstream

erosion protectione) dimensions of floors, wallsf) under-drainage beneath the slab and

location of any cut-offsg) spillway rating curve and design

discharge (flood discharge andfrequency of event)

h) tailwater rating curve.

10. Detailed plan(s) of outlet worksshowing locations and dimensions ofall valves or sluice gates, intakes,trash racks, outlet towers, gatehouses and appurtenant structures.

11. Discharge rating curve for the outletworks.

12. Sub-surface exploration resultsshowing (as necessary):

a) depth to bedrock (whereexploration taken to bedrock)

b) classification of both rock andsoil underneath the dam and itsappurtenant structures

c) illustrated logs of all holes withdepth to water table and dates ofmeasurement recorded

d) results of other tests performede) all unusual surface and sub-

surface geological featuresf) classification and strength


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parameters of constructionmaterials.

13. Miscellaneous plans of constructionfeatures not covered above such aspilings, fish ladders, flash boards,timber details, radial gates ormechanical operating devices, fuseplug spillways, etc.

14. Construction specifications.

15. Proposed construction schedule.

Certain structures may be subjected to anin-depth evaluation by the Directordepending on the consequences offailure, location, or other factors. Inthese cases, the Dam Safety and WaterProjects Branch may ask for additionalinformation regarding the project. ListB includes some of the areas for whichadditional information may be required.

ADDITIONAL INFORMATION - LIST B

l. Spillway and outlet model studies.

2. Plans for handling river diversionduring construction.

3. Flood inundation maps, flood actionplans, and emergency preparednessplans.

4. Instrumentation drawings, reportsand reading schedules.

5. Schedule of first filling of reservoir,operating methodology.

6. Design reports covering.- Hazard Assessment.- Freeboard Selection etc.

7. Additional information required atdiscretion of the Dam Safety andWater Projects Branch.

After receiving the required information,the Dam Safety and Water ProjectsBranch will evaluate the proposedstructure and recommend to the Directorthat the application be approved orrejected. Approval may have certainconditions attached to it. These mayinclude the following items:

a) inspection of the works during andafter construction

b) notification of the Dam Safety andWater Projects Branch prior to startof construction

c) provision of EmergencyPreparedness Plans (EPP's)

d) provision of Operations andMaintenance and Surveillance(OMS) Manuals

e) instrumentation readingsf) visual inspectionsg) first filling schedules, andh) future reporting.

EXISTING STRUCTURES

Part 6 of Water (Ministerial) Regulationsallows inspections of dams and canalsand their associated appurtenantstructures to determine if they are safe.

The administrative process associatedwith operation of Part 6 of Water(Ministerial) Regulations is detailedbelow. Parts and Sections referred to areparts and sections in the Regulation.

1. Interpretation defines various termsused in the Regulation:

In Section (e), "canal" also includes:


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syphons, flumes, ditches, aquaducts,etc. that are capable of conducting 5cubic metres/sec. or more.

In Section (h), "dam" also includesthe foundations and abutments, thereservoir and its outer perimeter andworks related to the barrier such asspillways, penstocks, conduits, outletworks, and other flood or ripariancontrols.

2. The Minister has delegated thepowers under the Water Act forsections 97, 98, 99, 100, 101, 103,104, 105, 107, 115(1)(m), 157(b),160 and 167 to the Head of the DamSafety and Water Projects Branch.

3. Part 6 of the regulation allows theDam Safety and Water ProjectsBranch Head to obtain existinginformation on individual structures,arrange an initial site inspection andproceed to obtain extra information,if required, to determine thecondition of the structure.

4. Section 29 of the Regulation requiresthat within 90 days of receiving arequest from the Head of the DamSafety and Water Projects Branch,the Licensee must supply all existingdata on the dam or canal and arrangea site inspection. The Licensee andany person giving technical advice tothe Licensee may accompany theDam Safety and Water ProjectsBranch staff during this inspection.Formal Dam Safety Inspections willnormally be required every fiveyears for major dams with a DamSafety Report being prepared.

5. Section 33(1) of the Regulationrequires that the Licensee supply

additional information, as requested,to the Dam Safety and WaterProjects Branch Head so that thecondition of the dam or canal may beevaluated. For larger structures,mainly dams, the Dam Safety andWater Projects Branch Head willrequire that the Licensee report onthe condition of the structure. Thereport must identify any deficienciesand make recommendationsregarding repairs, modifications, etc.to ensure the project is safe. Thereport must contain a recommendeddate for future inspections andreports.

The Licensee may notify the DamSafety and Water Projects BranchHead that he is engaging anindependent professional engineer toobtain the information or prepare thereports.

The Dam Safety and Water ProjectsBranch Head may determine that theinformation or report is sufficient todetermine the condition of the damor canal. If no further work isrequired on the dam or the canal, theDam Safety and Water ProjectsBranch Head will inform theLicensee accordingly and mayprescribe a date when a furtherinspection will be required.

6. The Dam Safety and Water ProjectsBranch Head may decide that theinformation or report is inadequateand that further information or workis required. The Dam Safety andWater Projects Branch Head maydirect the Licensee to obtain furtherinformation or do such other andfurther things as necessary.


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7. Section 32(1) of the Regulationallows the Dam Safety and WaterProjects Branch Head to direct theLicensee to make such repairs,improvements, changes to, orreplacements of all or part of thedam or canal as he considersnecessary for the safety of anyperson or property affected or likelyto be affected by the dam or canal.

8. Section 32(3) requires that a personwho has obtained the Directorsauthorization must submit a schedulefor completion of the work to theDirector at least 14 days beforecommencing.

APPENDIX I - DEFINITIONS

Dam:A barrier constructed for the purposeof storing water or water containingany other substance, e.g. oil sandtailings, coal waste. For the purposeof this Guideline, a dam is limited tothose structures at least 2.5m highand is at least 30,000 cubic meters ormore in reservoir capacity.

Freeboard:The vertical distance between theFull Supply Level and the lowestelevation of the crest of the dam.

Incremental Consequences of Failure.Classification of Dams.

This is a measure of the increase inloss of life and economic damageattributable to dam failure caused bya specific natural event (flood) overand above that which would haveoccurred due to the natural event(flood) without dam failure.

Each dam is assessed and placed inone of four categories related to theirincremental consequences of failure:very high, high, low, very low.

Inflow Design Flood: (I.D.F.)The flood hydrograph used to designor assess the discharge capacity ofthe dam.

For each individual project theselected inflow design flood shouldbe developed using recognizedhydrologic methods applicable tolocal conditions used to estimate theshape volume and frequency of theselected inflow design flood.

Probable Maximum Precipitation:(P.M.P.)

The greatest depth of precipitationfor a given duration that is physicallypossible over a given area at aparticular geographic location at themost critical time of the year.

Probable Maximum Flood: (P.M.F.)A hypothetical flood for a selectedlocation on a given stream whosemagnitude is maximized accordingto accepted methods. It is estimatedby combining the most criticalmeteorological and hydrologicalconditions considered reasonablypossible for the particular locationunder consideration.

APPENDIX II - SPILLWAYS

Spillway Capacity:Each dam must be provided with aspillway or spillways sized toaccommodate the passage of floods.The spillway must be capable ofdischarging extreme floods withoutcausing failure of the dam. Limited


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damage may be sustained provided itdoes not affect the integrity of thedam.

When routing the inflow designflood through the reservoir the levelof the reservoir prior to the floodshould be assumed to be full supplylevel or the normal operating levelfor that time of year.

Service Spillways, EmergencySpillways and Outlets:

The sizing of the various outlets isleft to the judgment of the designengineer. In general, the operatingor service spillway should be largeenough so that the emergencyspillway operates infrequently.

In all cases, specific data must besupplied for the reservoir showingdetails of the freeboard calculations.Also rating curves must be suppliedfor the full range of operation ofeach spillway and/or outlet.

Minimum Freeboard Required:Freeboard is the minimum allowabledifference in elevation between thelowest elevation of the crest of thedam and the maximum flood levelattained when routing the InflowDesign Flood through the reservoir.

Some of the factors to be consideredin determining the freeboard requiredare:- Extreme floods- Wave run-up due to wind

generated waves and wind set-up- Settlement of the crest of the

dam.

Selection of the Magnitude of theInflow Design Flood (I.D.F.):

In order to select the appropriate IDFfor a project, it is necessary to assessthe incremental consequences offailure, i.e., loss of life, damage andenvironmental and social impactsdue to dam failure arising from aflood that exceeds the IDF to thoselosses that would occur for the IDFrouted through the reservoir andoutlets without dam failure.

The most important decision to bemade in selection of the IDF iswhether there would be potential forincremental loss of life. Noincremental loss of life is acceptable.

If a dam is designed to pass a largeflood (for example, the 1 in 5000year event), then the spillwaydischarge during this event maycause considerable downstreamdamages and potential loss of life, infact, all of the habitation may beflooded in which case no furtherpotential loss of life is possible dueto dam failure as a result of a largerflood. In this case, increasing thespillway capacity would not berequired to satisfy the “noincremental loss of liferequirements”. It would then requirean economic risk analysis todetermine if the economic losses,including loss of the dam, could betolerated if a larger flood occurredand caused the failure of the dam.

The incremental consequences offailure for the dam can be selectedusing Table 1. From this categorythe recommended spillway I.D.F.can be obtained from Table 2.


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Both new and existing spillways aretreated equally and the same analysiscan be applied to both. In general,where a potential for incrementalloss of life exists, the PMF should beused as the IDF. Where noincremental loss of life due to damfailure could occur, then the IDFshould be selected based on

economic or risk analysis with aminimum of the 1 in 100 year event.A number of organizations haveattempted to address the question ofspillway adequacy and especially theadequacy of existing spillways usingrisk-based analysis. References 5, 6,7 & 8 provide some insight into thissubject.

TABLE 1CLASSIFICATION OF DAMS IN TERMS OF CONSEQUENCES OF FAILURE

POTENTIAL INCREMENTALCONSEQUENCES OF FAILURE [a]

CONSEQUENCECATEGORY

LIFE SAFETY[b] SOCIO-ECONOMICFINANCIALENVIRONMENTAL[b] [c]

VERY HIGH Large number of fatalities Extreme damages

HIGH Some fatalities Large damages

LOW No fatalities anticipated Moderate damages

VERY LOW No fatalities Minor damages beyondowner’s property

[a] Incremental to the impacts which would occur under the same natural conditions(flood, earthquake or other event) but without failure of the dam. The consequence(i.e. loss of life, or economic losses) with the higher rating determines which categoryis assigned to the structure. In the case of tailings dams, consequence categoriesshould be assigned for each stage in the life cycle of the dam.

[b] The criteria which define the Consequence Categories should be established betweenthe Owner and regulatory authorities, consistent with societal expectations. Whereregulatory authorities do not exist, or do not provide guidance, the criteria should beset by the Owner to be consistent with societal expectations. The criteria may bebased on levels of risk which are acceptable or tolerable to society.

[c] The Owner may wish to establish separate corporate financial criteria which reflecttheir ability to absorb or otherwise manage the direct financial loss to their businessand their liability for damage to others.


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TABLE 2USUAL MINIMUM CRITERIA FOR INFLOW DESIGN FLOODS

CONSEQUENCE CATEGORY INFLOW DESIGN FLOOD (IDF)

Very High Probable Maximum Flood (PMF)[a]

High Annual Exceedance Probability (AEP)between 1/1000 and the PMF[b]

Low AEP between 1/100 and 1/1000[b] [c]

[a] An appropriate level of conservatism shall be applied to loads from this event, toreduce the risks of dam failure to tolerable values. Thus, the probability of damfailure could be much lower than the probability of extreme event loading.

[b] Within the High Consequence category, the IDF is based on the consequences offailure. For example, if one incremental fatality would result from failure, an AEP of1/1000 could be acceptable, but for consequences approaching those of a Very HighConsequence dam, design floods approaching the PMF would be required.

[c] If a Low Consequence structure cannot withstand the minimum criteria, the level ofupgrading may be determined by economic risk analysis, with consideration ofenvironmental and social impacts.

McLennan Girouxville Canal Drop Inlet Structure Figure 8 Lake


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APPENDIX III - DESIGN

Stability:Designs presented for new dams orcalculations provided during theassessment of existing dams andstructures should include stabilityanalysis. This analysis should be insufficient detail to enable thecalculations to be verified. Detailsof cross-sections analysed,parameters used including strengthof individual materials andfoundation and piezometricassumptions must be provided.

Outlets:In general, each dam should beprovided with a riparian outlet. Thisshould be sized to pass any dischargethat is required by the licence.Control valves should be locatedupstream of the dam centre line andshould be accessible either throughan access well or shaft, or as part of adrop inlet spillway arrangement.Surface mounted slide gates haveproved to be inadequate due to iceaction on the gate operating stem andare to be avoided.

Outlet pipes should be suitable forlong term operation and should beprotected from erosion andcorrosion. Lock-seam types ofcorrugated metal pipes (CMP) haveproven to be unsatisfactory. AnnularCMP is acceptable. Cathodicprotection or some other form ofcorrosion protection should beconsidered. Outlet pipes should belarge enough so that regular internalinspection can be made to determinetheir condition. When CMP is used,care should be taken when attaching

flexible CMP to rigid concretestructures. Also, the use of rigidseepage cut-offs with CMP is notrecommended.

Gates:Gates should be designed such thatthey are easily operated. Whenelectrical or mechanical operation isprovided, they should be exercisedregularly and appropriate andadequate back-up systems provided.Where winter operation is required,bubbler or heater systems should beinstalled.

Staged Construction:Where the construction of a dam isstaged over a number of years, fulldetails should be supplied with theapplication for licence. The use oflong term construction for oil sandsdykes, coal waste ponds, etc. isacceptable, provided details areprovided on the final height andslopes of the facility. Designchanges and modifications based onperformance of a staged constructionproject are acceptable but will besubject to special operatingrequirements. These may includeperformance reports at the end ofeach construction season orconstruction lift, as appropriate.

APPENDIX IV -INSTRUMENTATION

Instrumentation is provided in dams tomonitor behavior both during theconstruction and operational life of thestructure. These may consist of slopeindicators, piezometers, settlementgauges, measuring weirs, surface survey


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monuments, etc.

The extent and variety ofinstrumentation should be based on thehazard posed by the dam. The spacingand distribution of instrumentationshould be so designed that the behaviorof the dam can be effectively evaluatedeven when individual instruments fail.

Where instrumentation is proposed,drawings should be submitted with theapplication for licence giving depths,type of instrument and the readingschedule to be followed.

Instrumentation readings and plots willbe required by the Dam Safety andWater Projects Branch duringconstruction, during the first filling andfor the operational life of the project.

APPENDIX V - DIVERSION

Where diversion of a river or stream isrequired, full details are to be providedat the time of application. Details of thecofferdam(s) to be used, the diversionmethod, e.g. tunnels, and the frequencyof flood to be handled, must beprovided.

The risk of cofferdam overtopping andfailure during flooding should be fullyevaluated. An Emergency PreparednessPlan may be required for substantialcofferdams.

APPENDIX VI - OPERATION ANDMAINTENANCE MANUAL

Each major project must have anOperation Maintenance andSurveillance Manual detailing theoperation of the project including gates,

outlets, back-up equipment, emergencygenerators, etc. and the maintenanceschedule required to ensure that eachitem requiring long term maintenance ismaintained.

Copies of this manual may be requiredduring an annual inspection of theproject and one should be available onsite. Operational tests of flood handlingcapabilities including gate operation andstop log removal, should be carried outas required by the engineer reviewingthe safety of the project. These tests alsomay be required during the five yearjoint safety review carried out inconjunction with the Dam Safety andWater Projects Branch.

APPENDIX VII - EMERGENCYPREPAREDNESS

INUNDATION STUDIES

Inundation studies are required todetermine the consequences of damfailure. These studies model theformation of a dambreak and the rapidpassage of the resulting floodwavedownstream.

EMERGENCY PREPAREDNESS

If inundation studies show that theconsequence category is high or veryhigh then the dam owner and otheremergency responders must ensure thatappropriate actions will be taken tomanage an emergency situation andmitigate the effects if the dam were tofail.The dam owner is responsible forensuring that all emergency respondersare able to develop co-ordinated plansfor such emergencies by:- identifying all emergency responders

with the resources to assist during an


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emergency- making them aware of the areas that

would be inundated- making them aware of the amount of

time available to warn local residentsif the dam were to unexpectedlybreach

- assisting stakeholders in clarifyingtheir emergency roles

- assisting emergency responders inpreparing emergencycommunications procedures betweenthemselves

- facilitating agreement between allthe emergency information sourceson how to organize the task ofsupplying information needed duringan emergency

- preparing an emergency notificationfanout procedure satisfactory to all.

During any emergency, the dam owneris responsible for:- initiating the notification fanout

- providing the information needed tokeep all stakeholders up-to-date onthe situation at the source of theemergency

- providing the information needed tokeep all stakeholders up-to-date onthe progress of the flood wave if thedam does breach.

- supporting the emergency operationsof municipalities

Each emergency responder must have anemergency operations plan. The damowner must have an On-Site plan foraction that would be taken at the dam.In addition and most importantly, theowner must also create, distribute andperiodically test the EmergencyPreparedness Plan for notifying andcoordinating the response ofstakeholders to the emergency situationcreated downstream by problems at thedam.

Dickson Dam Spillway Oldman Dam Spillway


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GENERAL INFORMATION

Licensees or other persons requiring further information on the working of the Regulationor the application of this guideline should contact the Dam Safety and Water ProjectsBranch.

Alberta Environmental ProtectionDam Safety and Water Projects Branch8th Floor, Oxbridge Place9820 - 106 StreetEdmonton, AlbertaT5K 2J6

Phone: (780) 422-1355

The Dam Safety and Water Projects Branch will also give general engineering advice butfor particular problems will refer the Licensee to one of the other agencies listed below:

a) Prairie Farm Rehabilitation Administration (P.F.R.A.)Agriculture Canada632, 220 - 4 Ave S.E.Calgary, AlbertaT2G 4X3Phone: (403) 292-5638

P.F.R.A. will give design and construction advice to farmers and ranchers in theprairie provinces.

b) Consulting Engineers of AlbertaSuite 505, 22 Sir Winston Churchill AveSt. Albert, Alberta T8N 1B4Phone: (780) 458-1852

For names of consulting engineers.

OTHER PUBLICATIONS BY DAM SAFETY AND WATER PROJECTSBRANCH

D.S. 5 Inspection of Small DamsThis is a booklet designed to help the owners of small dams recognizeproblems occurring at their dams.

D.S. 6 A Dam Owners Guidelines for the Preparation of Emergency Preparedness Plans


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Details the required process for preparing Inundation Studies and EmergencyPlans.

These publications are available through the Dam Safety and Water Projects Branch.

REFERENCES

1. "Dam Safety Guidelines” Canadian Dam Safety Association, January 1999.

2. "National Dam Safety Program, A Progress Report",Federal Emergency Management Agency, U.S.A. FEMA 103/April 1986.

3. "Regulations Governing Safety of Water Power Projects and Project Works", FederalEmergency Regulatory Commission, June 1980.

4. "Federal Guidelines for Dam Safety".Prepared by the AD Hoc Interagency Committee on Dam Safety of the Federal Co-ordinating Council for Science Engineering and Technology, Washington, D.C.20500, June 25, 1979.

5. Von Thun, J.L. "Application of Decision Analysis Techniques in Dam SafetyEvaluation and Modification", Proceedings of the International Conference on Safetyof Dams, Coimbra, 23-29, April 1984.

6. "Safety of Dams, Flood and Earthquake Criteria", Committee of Safety Criteria forDams, U.S. National Research Council, 1985.

7. "Interim Guidelines on Design Floods for Dams",Australian National Committee on Large Dams, 1984.


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RELATED WEB SITES

1. Canadian Dam Safety Association http://www.cda.ca/

2. Alberta Queen’s Printer http://www.gov.ab.ca/qp/ascii/regs/98_205.txt

3. Alberta Environmental Protection http://www.gov.ab.ca/env/water/reports.html http://www.gov.ab.ca/env/water/basins.html

4. P.F.R.A. http://www.agr.ca/pfra/pfintroe.htm

http://cda.ca/

http://www.gov.ab.ca/qp/ascii/regs/98_205.txt

http://www.gov.ab.ca/env/water/reports.html

http://www.gov.ab.ca/env/water/basins.html

http://www.agr.ca/pfra/pfintroe.htm

Documents

canal and dam safety