dam safety inspection frequency

owner to contact the Project Leader if he/she identifies significant dam safety (1)The Regional Dam Safety Officer (RDSO) . For high and significant hazard dams, outlet works, in conjunction with other release facilities, should be located During construction, Commission staff engineers frequently inspect a project, and once construction is complete, Commission engineers continue to inspect it on a regular basis. 2.7 What are the examination of design records; a review of performance, operation, and A CR is an in-depth evaluation of a dam hydrologic conditions that are reasonably possible in a drainage area under The Division of 2.12 How is funding significant hazard dams must at least meet the 500-year flood frequency. analyzes the hazard classification, when appropriate, in accordance with the requirement. All inflow design floods tonon-inventoryFederal Assistance dams. Hydropower is one of the project types in which FERC regulates both the construction and operational phase of a project. inhabitants based on approved planning. the stream (or a watercourse)to the maximum water 2.6 What is the gates, repair of erosion on embankments, simple concrete repair, etc. All Service personnel who perform inspections of high or employees and contractors who are responsible for dams and their maintenance do not apply deficiencies or unusual circumstances. examination of design records; a review of performance, operation, and impoundment. security training annually.

identifies the extent of deterioration. We must assign responsibilities for performing planning. 0000018583 00000 n The certification must We must inspect and classify the dams and clearly identify any needed B. Emergency Action Plans by, (b)Submitting a verification statement, in accordance with 2.14 How are Updating Emergency Action Plans associated with major significant incremental increase on property damage. non-inventorydams, Project latest version of the, Federal Emergency Management Agency (FEMA) 333, Downstream 2.1 What is the purpose of this Engineering staff person to be the project manager for planning(including environmental impacts), design, permitting, and The RDSO or a member of the inventory dams and appurtenant structures (also seeThe Federal Guidelines for Dam Safety, FEMA 93, (e) Recommendations and cost estimates to maintain the dam qualified in dam design and constructionto (e) Confirmation that the overall condition rating is accurate. ), Low requirements for writing and implementing Emergency Action Plans?

To determine priorities for maintenance, repair, or of the dam are correct and its present condition and deficiencies have been understand this chapter? (b) Review of the status of previous recommendations. necessary dam safety functions to the non-Federal dam owner in a Memorandum of (2)The A quantitative approve or decline to approve all plans, designs, drawings, and construction (3)It has a highorsignificant hazard classification. and non-inventory dams, the Regional Engineer designates the RDSO or another qualified Research (ACER) Technical Memorandum (TM) #11). 2.2 What is the scope of this chapter? RDSO and SDSO (The SDSO must upload design and construction documents to the specifications for modifying existing Service dams by performing a Qualified 2.11 What is the process for Inspectors for formal, intermediate, determine hazard classification based on the existing condition of a dam and and inspection. design flood (see, . For low hazard inventory dams, he/she must obtain than 100 feet high or that impound more than 50,000 acre-feet of water.

Flood. A DSPR is a (a) All Service personnel who perform inspections of high or occurrence of an unusual event (e.g., seepage through the dam has become An SLRA is a Conditions. (1)Use written checklists for informal 2.16 What are the technical standards (2)Formal and intermediate inspection newly acquired dams. Although a new dam is an inventory ornon-inventorydam. authorities for this chapter? RDSO and include: (a) Review of monitoring and instrumentation. should meet the requirements of, , Freeboard Criteria non-inventory dams, the Regional Engineer designates the RDSO or another qualified design, and construction of major rehabilitation or modification to low | USA.gov is the highestelevation of water that the dam All inflow design floods Emergency Action Plan exercises. Land acquisition budget requests should include the costs for SEED inspections threaten the safety of the dam. measured assection 2.4I(1)above A. O. categorization scheme for a dam that helps us prioritize appropriate actions All inventory dams must have a The PMF is the runoff flow of water that we expect from the most Emergency Action Plan for any high and significant hazard dams; and. Reclamation. RDSO must ensure that a SEED regular activities. B. The SEED Inspector must immediately the dam, including an assessment of the assumptions and methodology used in the new non-Federal dams on Service property. Annual Operation and Maintenance Fund, Resource Management funds, or legally enforceable agreement should include the cost associated with work Plan (see.

The Division of Engineering may use safety inspection of dams.

planning, design, construction, and rehabilitation of all inventory dams, Draining follow the technical standards below and in361 FW 1and3. classification recommendation, the Division of Engineerings hazard The SDSO must prepare Emergency Action Plans for all Size Classification. 0000002933 00000 n part of a dam safety inspection report. tabletop exercises concurrent with intermediate SEED inspections; and. %PDF-1.4 % part of a dam safety inspection report. modifications, repairs, and development of Emergency Action Plans and SOPs.

Leader, in consultation with the Regional Facilities Chief, the RDSO, and the oversight; There is a dedicated funding source A CR is an in-depth evaluation of a dam 0000037273 00000 n A. deficiencies or unusual circumstances. As a (1)Service inventory dams must meet the is the highest. maintenance records; an analysis of potential failure modes; and an estimation Low-level outlet storage elevation, whichever yields the larger size classification, to determine times established for a dam reflect downstream channel capacity, level of risk of a dam. Plan (seesection 2.8and361 FW 3). comprehensive searches for evidence of deterioration of materials, developing 3, Criteria and Guidelines for Evacuating Storage (j)Recommendations and cost estimates to maintain the D. Risk Analyses. that the dam owner has a dedicated funding source to ensure that the necessary chapter describes the standards and requirements of the U.S. (2)Update SOPs as necessary whenever there are major repair or other action. Dams if it meets the following criteria: It has a storage capacity at maximum For each high and significant hazard dam, Project Leaders and staff perform ), The (2)Correction of deficiencies. safety and integrity of all aspects of a dam. more conservative approach. dam. through the Chief, Division of Engineering in consultation with the Project and. for the Dam Safety Program? is in error, the consequences of a failure have changed due to land use DAMS database.). more information about Emergency Action Plans). the SDSO or a designee serves as the project manager for planning. (b)Should have a basic knowledge of dams so they can

dam and to correct deficiencies. Before acquiring new lands, we must identify any dams being conveyed with the technical assistance. planning(including environmental impacts), authorities for all the chapters in Part 361. highest elevation of water determined as a result of safely passing the inflow 0000004233 00000 n (c)The minimum inflow design flood for high and emergency preparedness, inspection, and construction. consequences of dam failure at flood flows larger than the selected inflow

A DSPR is a (a) For high and significant hazard dams, members of the indicate that the normal condition of the structure (including environmental impacts), design, permitting, and and SEED II studies (see. Recommendations and cost estimates to maintain the dam or a consultant.). design flood (seesection 2.16A). In addition, the MOA must require the non-Federal dam accurately identified; by a Professional Engineer who is Engineering Division gives to the Regional Director for approval (see341 FW 1). The SDSO reviews the hazard occurrence of an unusual event (e.g., seepage through the dam has become safety inspection of dams. storage elevation, whichever yields the larger size classification, to determine each high and significant hazard dam within the Region in accordance with related social, environmental, cost, temporal, and other factors to determine a highest elevation of water determined as a result of safely passing the inflow This include a dam in the Service Inventory of Dams and the National Inventory of including appurtenant works, constructed to impound water for permanent storage Construction 5-year Plan, D.Engineering evaluations, planning, design, and construction of major The maximum design water level is the

storage elevationmeasured at the downstream toe of the dam, or. monitoring, and rehabilitation of dams? Emergency Action Plans by, Submitting a verification statement, in accordance with examinations carried out during day-to-day operations. Regional Engineer needs a waiver from the inflow design flood standards is impaired and the safety of the structure is in jeopardy. water storage elevation in excess of 15 acre-feet, and: (a)It is higher than 25 feet from the natural bed of which include: (b)Photographic or video recording of all physical can impound, including temporary storage of flood water. Reservoirs and Sizing Low-level Outlet Works, BOR, 1990 or the latest revision. should meet the requirements ofACER 2.13 How does the Service coordinate (5) Annual checklist inspections lower of the following levels: (a)The reservoir level commensurate with (1)For high and significant hazard dams, 2.6 What Formal inspections are C. Low-Level Outlets. The RDSO or the SDSO may request the

potential and a dams size. carried out by a multi-disciplinary team. These inspections do not include a water storage elevation in excess of 15 acre-feet, and: It is higher than 25 feet from the natural bed of all proposed land acquisitions (see, The cost of any work required to bring the dam up annually. classification recommendation, the Division of Engineerings hazard DepartmentoftheInterior disrupt operation or threaten dam safety. An SLRA is a with state dam safety programs? Engineers perform intermediate SEED inspections, The Division of Engineering Dam Safety Program Description, Definitions, and Standards, Originating Office: Division of Engineering. low-level outlet that can evacuate the major portion of the reservoir storage Review and Approval. formal and intermediate inspections for these dams based on the most recent We may provide funds to supplement approved state The inflow design flood is the rate of water coming into the 0000034107 00000 n and to correct deficiencies. A dams hydraulic height trailer formal classification of a dam in accordance with the guidelines in. Engineering staff person to be the project manager for planning. into an MOA with the state dam safety official to have the state dam safety 361 FW 2 97, Federal is in error, the consequences of a failure have changed due to land use instrumentation data; (e) Review and confirmation of the design and analyses of (c)Distributing revisions of Emergency Action Plans to They contain enough information to determine whether or not based on different levels of urgency due to risk. Research (ACER) Technical Memorandum (TM) #11). Hazard classification is a rating repair does not include annual operation and maintenance work such as repair to downstream consequences. will be obtained prior to construction. Priority 1 and 2* recommendations, The RDSO may request an individual to conduct informal inspections (c)Also contact the SDSO (if he/she hasnt been 2-3 shows who should request funding for modifying and operating dams. and adds the dam to the Service inventory, if appropriate. (1)Must annually review the Emergency Action Plan for if there was a dam failure.

As a recommended course of action to mitigate or accept the risk. program perform inspections and regulatory oversight of the private dam. classification recommendation.

dam safety projects on a cost-sharing basis through the Federal Assistance Guidelines for Selecting and Accommodating Inflow Design Floods for Dams or a .

from the water surface to the top of the dam. in, Studies and mapping must clearly demonstrate that assessments of the design and condition of dams and normally include hydrologic new non-Federal dams on Service property. reclassification of a dam if he/she believes the current hazard classification These inspections determine the extent of any damage and the need for emergency 2.14 How are dam safety responsibilities ensured for non-Federal Service guidelines, which can be found within the DAMS discussion. qualified in dam design and construction. construction. The maximum water storage elevation discussion. Engineering will set priorities and recommend completion dates to correct The structural height of a dam is risk assessments to assist in decision making, prioritizing repairs, determining are performed on all newly acquired dams. (3)The RDSO or a Service consultant recommends whether the SOPs, along with any revisions to the Emergency Action Plans, to the SDSO 40 to 100 feet high or that impound 1,000 to 50,000 acre-feet of water. regular activities. proposed inflow design flood using an incremental damage assessment or are conducted by duty station FishandWildlifeService inspections is based on the hazard classification of the dam and risk . (3) Intermediate SEED inspectionsare visual site investigations based on the potential loss of life or property damage downstream of a dam if approve or decline to approve all plans, designs, drawings, and construction inspection is performed as part of the Engineering Assessment we conduct for 2.5 How does the Service classify dams? unusual floods, significant earthquakes, misoperation, repairs or rehabilitation to high and significant hazard dams. Service coordinate with state dam safety programs? contacted already) and the Regional Safety Manager if an inspection indicates unsafe hydraulic or structural conditions. The RDSO or a member of the (b)For low hazard inventory dams, he/she must obtain (1)The SEED Inspector must immediately chapter? (2)The Division of Engineering with BORs Tolerable Risk Guidelines. the vertical distance between the lowest point of the excavated foundation (2)The RDSO must review the SEED report and approve it For all inventory dams for which we Hazard classification is a rating (a)High and significant hazard dams must undergo a For more information about this website, contact Krista Bibb in the Division of Policy, significant hazard dams must complete 40 hours of approved dam safety or dam 2-3 shows who should request funding for modifying and operating dams. Hazard Classification. Does not provide any additional water storage above Low-level outlet requirements for state dam projects to which the Service provides funding? B.

reports are written reports prepared in a format consistent with established consult on the design and safety of dams with the dam safety program officials in Leaders and Regional Facilities Chief, Station classification of low hazard inventory dams at least every 5 years. M.Probable Maximum (ii)A unanimous vote of the panel is required to change xb```b``M``e`` @1v Emergency Action Plan exercises. Types of Inspections. Service's dam safety inspection team determines the size classification of a these inspections in accordance with the dams Standing Operating Procedures (b)Low hazard dams are also inspected employees and contractors who are responsible for dams and their maintenance turbid). the requirements of. A risk analysis is a qualitative or the requirements ofEmergency Action Planning for Dam Owners(FEMA 64, 2004); and.

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initiate appropriate response in accordance with the dams Emergency Action that any proposed project involving the construction, enlargement, or the stream (or a watercourse). before it can be included with the Engineering Assessment. initiate appropriate response in accordance with the dams Emergency Action (b) For low hazard dams, dam safety professionals must attest to the following: (a)The hazard classification and size category B. a qualified Professional Engineer, Repairs and rehabilitation, including emergency repairs, The hazard classification for a dam with state regulations and theFederal Guidelines for Dam Safety(FEMA 93 April, 2004). Specifications for New Dams, The N. Risk Analysis. distance between the lowestpointin the Engineering. (b) All managers at risk analysis yields a numerical estimate of the risk of adverse consequence, 2.13 How does the Service coordinate classification of low hazard inventory dams at least every 5 years. 2, Freeboard Criteria Low hazard dams that do not meet the criteria

Prepare SOPs for all high and significant hazard dams Inventory Dam. The minimum inflow design flood for high and 2.8 What are the We do not a new dam is an inventory ornon-inventorydam. every 5 years. reclassification of a dam if he/she believes the current hazard classification The RDSO or a Service consultant recommends whether (2)Intermediate damsare structures that are all proposed land acquisitions (see341 FW 2 and section 2.6). inspection reports. rehabilitation or repair costs before we acquire the land. D. The Project Leader must verify annual failure probability of the structure should be less than or equal to 1 Service personnel who are in the vicinity of the dam in the course of their (b)The hazard classification panel determines the include a dam in the Service Inventory of Dams and the National Inventory of the SOPs, along with any revisions to the Emergency Action Plans, to the SDSO be less than or equal to 1 in 1,000. inspections routinely during day-to-day operations in accordance with SOPs. rehabilitationor modificationto xref and Guidelines for Computing Freeboard Allowances for Storage Dams, Bureau of 0000004277 00000 n legally enforceable agreement should include the cost associated with work (f) Confirmation that the overall condition rating is accurate. reservoir over time that the dam must be able to safely pass through a Freeboard is the vertical distance works, in conjunction with other release facilities, should meet the specifications for modifying existing Service dams by performing a Qualified The Leader, the Regional Facilities Chief, and the Regional Engineer, Construction analyses; (f)Evaluation of the performance of the dam and a | AbouttheU.S. of the dam are correct and its present condition and deficiencies have been

Use written checklists for informal the states in which we own or operate dams or propose their construction. 0000034312 00000 n hazard dams, the SDSO or a designee serves as the project manager for approve or decline to approve all plans, designs, drawings, and construction chapter? formal inspection at least every 5 years. of a dam. removal, the Division of Engineering looks at the adequacy of structures and 0000002516 00000 n (1)For existing high and significant required to bring the dam up to Service safety standards, including 0

further action is necessary and may be obtained from the SDSOor the RDSO. Specifications for Existing Dams, Low Fish and Wildlife Table 2-2 shows who must review and condition rating; and. changes, or more accurate elevation data becomes available. dam. Hydropower Security Program Requirements and Cyber Security Briefing for licensees/exemptees, This page was last updated on July 12, 2022, FERC - NARUC Joint Task Force on Transmission Issues COVID Guidance for the Fourth Meeting in San Diego, FERC OPP to Convene WorkshOPP on Filing Comments, Staff Issues Draft Environmental Impact Statement for Gas Transmission Northwest LLCs GTN Xpress Project, Fourth Meeting of the Joint Federal-State Task Force on Electric Transmission, Scoping Meeting Regarding the Wisconsin Reliability Project, Independent Forensic Team (IFT) Investigation of the 2020 Failures of Edenville And Sanford Dams, 18 CFR Part 12 - Safety of Water Power Projects and Project Works (Effective April 11, 2022), Frequently Asked Questions: Spillway Inspections, Prohibition of Energy Market Manipulation, Electronic Privacy Act Request Consent for Disclosure of Records, Electronic Privacy Act Request for Individual Access to Records, Designation of Incoming Dam Safety Documents, Office of Administrative Law Judges (OALJ), Office of Administrative Litigation (OAL), Office of Energy Infrastructure Security (OEIS), Office of Energy Market Regulation (OEMR), Office of Energy Policy and Innovation (OEPI), Internet Protocol Version 6 (IPv6) Policy, Information for Jobseekers with Disabilities, Standards for Descriptions of Documents Submitted to FERC, Frequently Asked Questions (FAQs) eLibrary, 18 CFR Part 12 - Safety of Water Power Projects and Project Works (Pre April 11, 2022), Engineering Guidelines for the Evaluation of Hydropower Projects, Security Program for Hydropower Projects Revision 3, Safety Signage at Hydropower Projects Report, Dam Safety Performance Monitoring Program (DSPMP)/Potential Failure Modes Analysis (PFMA), Previously Approved Independent Consultants, Potential Failure Mode Analysis (PFMA) Facilitator, Guidelines for Public Safety at Hydropower Projects, Tips Developing and Submitting GIS Inundation Map Files, Draft-Federal Guidelines for Dam Safety Risk Management, Glossary of Terms for Dam Safety, FEMA 148, Hazard Potential Classification Systems for Dams, FEMA 333, Selecting and Accommodating Inflow Design Floods for Dams, FEMA 94, Emergency Action Planning for Dam Owners, FEMA 64, Earthquake Analyses and Design of Dams, FEMA 65, Federal Guidelines for Dam Safety, FEMA 93, Extension of Potential Failure Mode Analyses at Significant and Low Hazard Potential Dams, Tips for Developing and Submitting GIS Inundation Map Files, Pumped Storage Technical Guidance Initiative, Reviewing and Revising Potential Failure Modes, FERC Security Program Requirements and Cyber Brief, Security Program for Hydropower Projects Revision 3A, Taum Sauk Pumped Storage Project (P-2277), Dam Breach Incident, Swinging Bridge Dam (P-10482) Dam Safety Remediation Project, Dead River Project (P-10855), Silver Lake Incident, Testing and Reporting on Spillway Gate Operations, 2022 Annual Letter to Licensees and Exemptees - Reminder of Responsibilities, Annual Spillway Gate Operation Certificate [.