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OPERATION AND MAINTENANCE PLAN[INSERT DAM NAME]National Inventory of Dams (NID) No. [Insert NID No.][INSERT DAM LOCATION][Insert Date]Prepared for:[Insert Name][Insert Address][Insert Address]Prepared by:[Insert Name][Insert Address][Insert Address][Insert Date]

[Insert Dam Name] Operations and Maintenance PlanTABLE OF CONTENTS1.0INTRODUCTION . 41.1Operation and Maintenance Plan Purpose . 41.2Plan Organization . 42.0DAM FACILITY DESCRIPTION . 53.0OPERATIONS. 64.0INSTRUMENTATION AND MONITORING . 75.0INSPECTIONS . 86.0MAINTENANCE . 9TYPICAL LIST OF TABLESTable 1Table 2Table 3Table 4Table 5Table 6Table 7Contact listSummary of pertinent dataOperations and Maintenance ScheduleSummary of routine/informal inspection activitiesSummary of annual inspection activitiesSpecial inspection activitiesSummary of required maintenance activitiesTYPICAL LIST OF ATTACHMENTSAttachment 1Attachment 2Attachment 3Attachment 4Attachment 5Site PlanTypical Cross Section Through EmbankmentExample Operations LogsExample Instrument Monitoring Data FormsDam Safety Inspection Form

[Insert Dam Name] Operations and Maintenance PlanREVISION SHEETOperation and Maintenance ManualFOR[Insert Dam Name]No.Description of Revision MadeClick here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.########BybybybybybybybybyDISTRIBUTION LISTOperation and Maintenance ManualFOR[Insert Dam Name]Copy No.#########LocationClick here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.Click here to enter text.DateDateDateDateDateDateDateDatedate

[Insert Dam Name] Operations and Maintenance Plan1.0INTRODUCTION1.1Operation and Maintenance Plan PurposeAn Operations and Maintenance (O&M) Plan (referred to in this document as the Plan) is themost important reference for management of the [insert dam name] [insert NID No.]. The Planwill describe the components and will outline the operation, inspection and maintenanceactivities necessary to maintain the dependability of the system. This manual is intended tocover normal operating conditions; for recommended actions during emergency conditions,please refer to the Emergency Action Plan.1.2Plan OrganizationThe Plan is intended to be used by O&M personnel as a guide for operating, maintaining andmonitoring the dam. As such, it is presented in sections specific to each system componentand/or necessary activity. The Plan is organized into the following sections:1.0 Introduction – This section outlines the objectives and organization of the Plan.2.0 Dam Facility Description – This section describes the [insert dam name] and itscomponents and includes stakeholder contact information and pertinent dam data (Tables1 and 2).3.0 Operations – This section describes the operations of the general system components ofthe [insert dam name] (Table 3).4.0 Instrumentation and Monitoring – This section describes the instruments andinstruction for monitoring them.5.0 Inspection – This section describes the inspection recommendation for the [insert damname] (Tables 4, 5, and 6).6.0 Maintenance – This section describes the routine maintenance activities and proceduresfor each system component (Table 7).

[Insert Dam Name] Operations and Maintenance Plan2.0DAM FACILITY DESCRIPTIONInsert a description of the following: Dam location and accessDam ownershipMaintenance responsibilitiesPhysical features of the dam - Include embankment, spillway, outlet, inflow,instrumentation, operating mechanisms or components, and any other applicable systemfeatures or relevant information.Include: A table summarizing all pertinent system data - Table 2 is an example of a pertinent datasummary table and can be used as a guide for developing a summary of pertinent data.List of contacts - Table 1 is an example of a contact list and can be used to aid indeveloping a contact list.Site plan (Attachment 1) showing locations of facility componentsTypical cross section through the embankment - Attachment 2 is a typical cross section ofan earth embankment with places to insert elevations of relevant project features and canbe used to develop a site specific cross section.Photographs of each system component, if available.

[Insert Dam Name] Operations and Maintenance Plan3.0OPERATIONSInsert a description of the following: General reservoir operation, including the regulation of inflow and outlet ditches, themaximum allowable pool levels for different times of the year, maximum or minimumcarry over storage, and maximum or minimum permissible outlet releases as applicable tothe structure.Operation of the outlet to limit or prevent excessive spillway flowMethod for periodic drainage of the reservoir to permit thorough outlet and upstreamslope inspection.Include: Complete, clear, step-by-step instructions for operating each mechanism or componentdescribed in Section 2.0.The correct method of opening and closing gates and valves. Emphasize propersequences.Sketches, drawings, and photographs to identify specific handles, cranks, buttons, etc.A schematic diagram for hydraulic and electric gates, showing each component(including back-up equipment) and its place in the operating sequence.An Operations Schedule - Table 3 can be used as an aid to develop the schedule.An Operations Log that provides information that may be of importance to their specificstructure. An example Operations Log is included as Attachment 3 and may bedeveloped a site-specific Operations Log or the Operations Log may be in the form of anelectronic record or database, as applicable to the structure.

[Insert Dam Name] Operations and Maintenance Plan4.0INSTRUMENTATION AND MONITORINGInsert a description of the following: All instruments used to monitor the dam with locations shown on the site plan(Attachment 1) or other maps, as appropriate.A discussion of the purpose of each instrumentClear step-by-step instructions on how to use each instrument and how to takemeasurements at each monitoring pointInstructions on how to document each measurement.Discussion of results and recommendations for data reduction and subsequentcalculations, and comparison to existing data.Include: Recommended instrument monitoring frequencies on the Operation Schedule. Table 3can be used as an aid to develop the schedule.Information on what is considered a normal or abnormal readingRelevant threshold valuesProcedures to be followed when abnormal readings are recorded or threshold values areexceeded.Instrument Monitoring Data forms applicable to the structure for recording instrumentmonitoring data. Example Instrument Monitoring Data forms are included as Attachment4 and may be used as an aid in developing site-specific forms or electronic data recordingprocedures may be developed, as applicable to the structure.

[Insert Dam Name] Operations and Maintenance Plan5.0INSPECTIONSInsert a description of the following: Inspection requirements, including the types and frequency of recommended inspectionsAn Inspection Schedule. An example Inspection Schedule is included as Table 4 andcan be used to develop the schedule for the structure.Include: Specific inspection proceduresClear, step-by-step set of instructions for conducting routine/informal inspections,annual inspections and special inspections of the dam and its surroundings.A list or table of what to look for during an inspection for each of the physical featuresof the system described in Section 2.0. Tables 4, 5, and 6 are examples of the types ofthings to look for during an inspection, presented by system component. These tablescan be used as an aid in developing specific inspection instructions for the structure.Dam Safety Inspection Forms. Attachment 5 is an example form that can be used todevelop site specific inspection forms.

[Insert Dam Name] Operations and Maintenance Plan6.0MAINTENANCEInsert a description of the following: General maintenance requirements for the damSpecific maintenance requirements for each operational component and all monitoringinstruments described in Section 2.0A schedule for general and specific maintenance activities. An example MaintenanceSchedule is included as Table 5 and can be used to develop the schedule for thestructure.Include: Clear and detailed instructions for performing maintenance so that new personnel canunderstand the tasks required and experienced personnel can verify that they havecompleted the work properly.A list or table of recommended maintenance activities for each of the physical features ofthe system described in Section 2.0. Table 7 is an example summary of the types ofmaintenance activities common for earth embankments and can be used as an aid indeveloping specific maintenance procedures for the structure.

[Insert Dam Name] Operations and Maintenance PlanTable 1. Example Contact List – [Insert dam rgency ContactEmergency ContactState Dam SafetyACounty EmergencyS i C diEmergency ServicesOthers as NeededOrganizationOffice AddressRepresentative and Phone Number

[Insert Dam Name] Operations and Maintenance PlanTable 2. Example Summary of Pertinent Data – [Insert dam name]ItemDescriptionGeneralState/National ID & NameLatitude/LongitudeCounty/Island/Nearest TownSize ClassificationDrainage AreaInflowType/Size/ConfigurationControl device(s)Bypass(s)Reservoir familyOutletType/Size/ConfigurationControl locationConduit typeConduit sizeConduit invertIntake/ControlEmbankmentType of damMinimum crest widthUpstream slopeUpstream slope protectionDownstream slopeDownstream slope protectionHeightLengthSpillwayTypeLengthCrest ElevationNormal Pool ElevationAvailable FreeboardMaximum DischargeReservoirNormal StorageMaximum StorageSurface AreaAccessAccess SurfaceAccess MethodAccess Description

[Insert Dam Name] Operations and Maintenance PlanOperationsInstrumentationDam VisitTransmit Log & FormsFlood Operations Reservoir Staff Gauges OccasionalOccurrenceACTIVITYAnnuallyQuarterlyTable 3. Example Operations Schedule – [Insert dam name]RequiredForms (2)Operations Log Reservoir Staff Gauge Monitoring DataForm Survey PointsSurvey Point Monitoring Data ble 4. Example Inspection Schedule – [Insert dam name] RequiredFormsOperations Log Annual InspectionSpecial InspectionUnusual orEmergency Event Emergency Action Dam Safety Inspection FormDam Safety Inspection Form Operations LogMow Grass (1)Maintain, Valves, GatesPer Manufacturer’s& OperatorsRecommendationsMaintenanceControl Vegetation (1)General Maintenance (1)At least twice during growing CTIVITYQuarterlyTable 5. Example Maintenance Schedule – [Insert dam name]RequiredForms (2)

[Insert Dam Name] Operations and Maintenance PlanTable 4. Example summary of routine/informal inspection activities – [Insert dam name]ComponentWhat to Look ForSafety Take safety seriously.Reporting Operations LogAccess Condition of gates and locksCondition of signageEvidence of vandalismObvious problems and/or damage (erosion,cracks or spalling, deterioration, etc.).Obvious problems and/or damage (erosion,cracks or spalling, deterioration, etc.).Obvious problems and/or damage (cracksand spalling, deterioration, blockedtrashracks etc.).Inflow structureInflow control device Outlet LocationDescription LocationDescriptionLocationDescription LocationDescriptionLocation (station and offset)DescriptionLimits (length, width, depth,height)LocationDescriptionLimits (length, width, nLocationDescriptionObvious problems and/or damage (erosion,excessive vegetation, sinkholes, etc.). Obvious problems and/or damage (erosion,damage, riprap displacement, etc.). Staff Gauges Obvious problems and/or damage Survey Monuments Obvious problems and/or damage Obvious problems (debris buildup, upstreamdevelopment, etc.). SpillwayReservoirFile completed Operations Log inproject O&M Plan Embankment (crest,slopes, toes)What to RecordPersonnel on-siteWeather conditionsReservoir water level

[Insert Dam Name] Operations and Maintenance PlanTable 5. Example summary of annual inspection activities – [Insert dam name]ComponentWhat to Look ForSafety Take safety seriously.Reporting Dam Safety Inspection FormAccess Condition of gates and locksCondition of signageEvidence of vandalismCondition of crest roadObstructions or blockage hampering flowStructural integrity of concreteDamage, deterioration or malfunction ofvalveObstructions, blockage, leakage orsignificant structural cracksDeterioration and structural integrity ofconcreteEvidence of any abnormal settlements,heaving, deflections or lateral movements inthe concrete channelErosion or sedimentation in inlet channeland energy dissipaterInflow structure Inflow control device Obstructions or blockage hampering flowStructural integrity of concrete Settlement, depressions, sinkholes,cracking, slides, sloughing, erosion, crestand downstream alignment seepagePiping, boils, low spots on crestUnauthorized activity (construction,excavation, etc.) on or adjacent to the damExcessive vegetationRodent activityErosion or lining damage (loss, disturbance,weathering or abrasion of lining material)Sloughing or cracking on side slopesDisplacement of riprapErosion or scour of upstream ordownstream endsRodent activityExcessive vegetation growth.Staff Gauges Survey Monuments OutletEmbankment Spillway What to Record Personnel on-siteWeather conditionsReservoir water level LocationDescription LocationDescription Location (station and offset)DescriptionLimits (length, width, depth,height)Flow rate in channel (ifapplicable) File completed Dam SafetyInspection Form in project O&MPlan LocationDescription Location (station and offset)DescriptionLimits (length, width, depth,height)Flow rate (if applicable) LocationDescriptionLimits (length, width, depth,height)Damage or deterioration Damage or deterioration LocationDescriptionLocationDescription

[Insert Dam Name] Operations and Maintenance Plan Reservoir Changes to the surface of the drainage basin(changed agriculture practices, railroad orhighway construction or real estatedevelopments)Evidence of any abnormal settlements,heaving, deflections or lateral movements inthe culvert Location (station and offset)DescriptionLimits (length, width, depth,height)Flow rate in culvert (ifapplicable)

[Insert Dam Name] Operations and Maintenance PlanTable 6. Example Special inspections – [Insert dam name]Type of inspectionsHigh waterconditionsPost floodPost earthquakeInspection items Operational dutiesConduct during floods and high water eventsMonitor performance of flood control worksMonitor landside slope and toe for excessive seepageand piping problemsConduct after a flood event Initiate and take correctiveactions, as required. Conduct immediately after an earthquake inaccordance with Hawaii Dam Safety guidelines.Conduct a follow-up inspection after a period ofseveral days to two weeks, depending on site-specificconsiderations. Inspect and assesscondition of flood controlworks.Conduct a rapid overallassessment of theremaining level ofprotectionIdentify immediate dangerof secondary damage 16

[Insert Dam Name] Operations and Maintenance PlanTable 7 – Example summary of required maintenance activities – [Insert dam name]ResponsibilityComponentMaintenance activity Inlet structure Inlet controldeviceOutlet Embankment Spillway Person 1Person 2Promptly repair or replace damaged lining and components.Remove sediment that has accumulated to maintain capacity of thechannel.Vegetation shall be maintained and trees and brush controlled by chemicalor mechanical means. Control noxious weeds.Keep machinery away from steep side slopes. Keep equipment operatorsinformed of all potential hazards.Promptly repair or replace damaged components.Exercise gate valve regularly.Lubricate in accordance with manufacturer’s recommendations.Repair deteriorated concrete as soon as possible.Exercise regularly.Lubricate in accordance with manufacturer’s recommendations.Promptly repair or replace damaged components.Fill rills and gullies that occur on the embankment slopes and in thevegetated spillway and reseed the filled areas.When animal burrows are found, remove the burrowing animals, replaceembankment materials and reseed.Maintain a vigorous sod in the emergency spillway and on embankment byregular mowing and fertilization. Remove excess growth. Do not burn orovergraze.Prevent trees and brush from growing on embankment slopes, crest, or toe.Control tree and bush growth by hand cutting, mowing, or chemicals.Avoid damaging grass with herbicide sprays.Maintain a fencing to keep livestock of embankment, where applicable.Operate mowing and other equipment on slopes in accordance withmachinery operation manual.Fill rills and gullies that occur in the vegetated spillway and reseed thefilled areas.Maintain a vigorous sod in the spillway by regular mowing andfertilization. Remove excess growth. Do not burn or overgraze.Do not graze livestock during establishment of vegetation and when soilconditions are wet.Protect spillway from damage by farm equipment and vehicles. Do notuse spillway as a road and practice care when crossing to prevent tillagemarks or wheel tracks.Prevent trees and brush from growing in the spillway. Control tree andbush growth by hand cutting, mowing, or chemicals. Avoid damaginggrass with herbicide sprays.Reestablish vegetative cover immediately where scour erosion hasremoved established seeding.Where there is rock lining, replace any dislodged rock and fill back tograde if displacement or settlement occurs.Staff gauges Promptly repair or replace damaged componentsSurveyMonuments Promptly repair or replace damaged components17

[Insert Dam Name] Operations and Maintenance PlanATTACHMENT 1SITE PLAN[Insert Site Plan]

[Insert Dam Name] Operations and Maintenance PlanATTACHMENT 2TYPICAL SECTION THROUGH EMBANKMENT[See Example Below]

[Insert Dam Name] Operations and Maintenance PlanATTACHMENT 3EXAMPLE OPERATIONS LOG[See Example on Next Page]

[Insert Dam Name] Operations and Maintenance PlanState of HawaiiInventoryNumber:Date:OPERATIONS LOGPage ofWeather:Reservoir Water Surface Elevation:Spillway Discharge (cfs):Diversion Structure Discharge ns:Other Items:

[Insert Dam Name] Operations and Maintenance PlanATTACHMENT 4EXAMPLE INSTRUMENT MONITORING DATA FORMS[See Examples on Following Pages]

[Insert Dam Name] Operations and Maintenance PlanDRAIN OUTFALL/WEIR MONITORING TABLEDRAIN OUTFALL/WEIR NO.DateTimeReadByHeight of waterabove weir(feet)Discharge(cfs)CommentsTurbidityNotes:Use the follow ing equation to compute flow in gallons per minute (gpm): Q 461.558 (H)5/2Where H height (in feet,

1.1 Operation and Maintenance Plan Purpose An Operations and Maintenance (O&M) Plan (referred to in this document as the Plan) is the most important reference for management of the [insert dam name] [insert NID No.]. The Plan will describe the components and will outline the operation, inspection and maintenance