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Transcript of Watershed Structure Operation & Maintenance (O&M) Responsibilities Diane A. Guthrie, P.E. August,...
![Page 1: Watershed Structure Operation & Maintenance (O&M) Responsibilities Diane A. Guthrie, P.E. August, 2015.](https://reader030.fdocuments.net/reader030/viewer/2022032707/56649e4f5503460f94b46cdd/html5/thumbnails/1.jpg)
Watershed Structure Operation & Maintenance (O&M)
Responsibilities
Diane A. Guthrie, P.E.August, 2015
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Helping People Help the Land
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Helping People Help the Land
Since 1947 – a $6 Billion investment
Flood Control Act of 1944 (P.L. 78-534)
Watershed Protection and Flood Prevention Act of 1954 (P.L. 83-566)
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USDA Watershed Program
NRCS has assistedcommunities build more than 11,000 dams in 2000 Watershed Projects in 47 Statessince 1948
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Helping People Help the Land
PL-566 Watershed Structure
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Helping People Help the Land
Alabama Structures
In Alabama - over 100 Dams have been built (Flood Water Retarding Structures)
Flood control + some M&I
Most constructed on private property; some on US Forest Service Land
O&M by sponsors (local government)
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Why are we here today?
AD-435A
PERFORMANCE ELEMENT 01 - MISSION RESULTS (CRITICAL)“Executes policy requirements contained in the National Operations and Maintenance Manual regarding dam safety which includes the written notification of Sponsors and the State Dam Safety Officer for violations of the Operations and Maintenance (O&M) agreement including changes in hazard classification of all project dams.”
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Why are we here today?
AD-435A
PERFORMANCE ELEMENT 01 -
MISSION RESULTS (CRITICAL)Element Rating
Exceeds Fully Successful Does not meet
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Helping People Help the Land
Why are we here? To help prevent a catastrophe.
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Helping People Help the Land
Issues
Aging Infrastructure
Adequate O&M is lacking on many sites
Hazard class changes
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Watershed Program Dams
More than 11,000 dams in the U.S.
$14 Billion infrastructure
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Helping People Help the Land
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1999 NRCS Oversight and Evaluation (O&E) Review
1/3rd of the dams showed deterioration that could lead to dam failure.
No one was reviewing Hazard Classification
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Follow-up Oversight & Evaluation Review in 2006
67% of structures did not have adequate O&M (6 states were reviewed)
Lack of O&M increases safety Hazard and potential for Loss of Life
NRCS is not holding the Sponsors accountable for violations of O&M agreements
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Problems Identified:
O&M Agreements and O&M Plans are not being reviewed and updated
Sponsors not carrying out O&M responsibilities
Lack of oversight and follow-up by NRCS
Inadequate training
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NRCS Action for FY2015
State Conservationists will determine status of compliance with O&M Agreement on every project dam
Will notify sponsors of O&M violations
Verify that the dam hazard classification is accurate, per the cycle as defined in policy
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National O&M Manual
The O&M Agreement is the corner-stone of the
NRCS-sponsor relationship after the dam is built.
We will be reviewing Part 500, Subpart A-Overview & Responsibilities
&Subpart C- Operation and Maintenance Agreement
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Agreements & Plans
Both are required for NRCS assisted Watershed StructuresThe Plan is more specific than the AgreementThe Plan may be incorporated into the O&M agreementSome watershed projects have 2 documents, some have just the O&M Agreement
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State Conservationist
Dam Responsibilities(Dam O&M)
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Helping People Help the Land
State Conservationists shall:
Develop State policies and procedures to ensure that O&M requirements are planned and implemented for all practices installed with NRCS assistance Establish policy to investigate and take action on all suspected violations of O&M requirements Determine the amount of NRCS resources that will be made available to assist sponsors/land users with O&M activities Actively pursue correction of all violations of O&M requirements; consult with the Office of General Counsel before pursuing legal remedies Notify appropriate authorities of emergency situations that may result in risks to public health and safety as described in 500.14
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District Conservationist
Dam Responsibilities(Dam O&M)
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Helping People Help the Land
District Conservationists shall:
Ensure that sponsor/land users are provided information on O&M requirements for all practices installed with NRCS assistance;Provide assistance to sponsors/land users for requested training, site-specific O&M recommendations, financial needs for O&M, and O&M inspections, in accordance with the policies established by the State Conservationist;Report suspected O&M violations according to policy and procedures;Review O&M Agreements with sponsors at least once every 5 years; andMaintain O&M records for NRCS assisted practices, as required by specific programs.
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Sponsors
Dam Responsibilities(Dam O&M)
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Public Law-83-566
“Sponsors are responsible for financing and performing without cost to the Federal Government, needed operation and maintenance of project measures installed with Federal financial assistance.”
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Helping People Help the Land
Operation & Maintenance Required by Sponsors
Insure the dam functions in the manner it was designed
Inspect the dam at least annually and after every major storm event
Prepare a report for each inspection and provide a copy to NRCS
Keep a record of all maintenance performed
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Helping People Help the Land
Maintenance Includes:
Fertilize and mow vegetation on embankments and spillways
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Helping People Help the Land
Maintenance Includes:
Herbicide treatment
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Helping People Help the Land
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Helping People Help the Land
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Helping People Help the Land
Maintenance Includes:
Remove & dispose of debris
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Helping People Help the Land
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Helping People Help the Land
Maintenance Includes:
Repair fences and gates
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Helping People Help the Land
Maintenance Includes:
Refill, smooth and vegetate erosion on embankments, spillways, and drainage ways
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Helping People Help the Land
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Helping People Help the Land
Maintenance Includes:
Insuring Structural Integrity of Principal Spillway
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Helping People Help the Land
Maintenance Includes:
Repair damaged plunge basins
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Helping People Help the Land
Maintenance Includes:
Ensuring Structural Integrity of the Emergency Spillway
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Helping People Help the Land
Maintenance Includes:
Ensuring Structural Integrity of the Emergency Spillway Exit
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Helping People Help the Land
NRCS actions this year
Evaluate each dam for compliance with the O&M agreement
Where non-compliant, notify Sponsor in writing and request that they make the necessary repairs that will ensure that the structure is safe
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Helping People Help the Land
NRCS actions this year
New policy supplement in the NEM: NRCS will review the O&M Agreement with the sponsor during the same year in which the 5 year O&M Inspection is scheduled.
O&M Agreements will be amended to include all necessary information in accordance with NOMM 500.21 – start with the two missing Agreements and those undergoing 5 year O&M Inspections this FY
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Helping People Help the Land
NRCS actions this year
All hazard classifications older than 5 years will be re-evaluated by an NRCS Engineer
State Conservationist will notify a Sponsor in writing of any hazard classification changes
If hazard classification changes to “High”, the State Conservationist will notify the Sponsor in writing that an Emergency Action Plan (EAP) needs to be developed
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An EAP is needed for this High Hazard Site
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Helping People Help the Land
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The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD).
To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 1400 Independence Avenue, SW, Washington, D.C. 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer.
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Typical Planning Process Scenarios
• No Action (Controlled Breach by SLO)
• Decommissioning of Dam (Controlled Breach by NRCS)
• Relocation of Properties at Risk, Repair Dam
• Dam Rehabilitation – several alternatives
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No Action
• Without federal funding and/or sufficient local funding, rehabilitation will not be viable.
• To reduce liability and eliminate the potential hazard of dam failure, a controlled breach measure will be implemented. The stream channel will bereconnected. Minimal effort will be madeto stabilize sediment.
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No Action (cont.)
• The structure will no longer provide protection or flood damage reduction benefits for any level of storm event.
• Contingency plans for catastrophic storm events will need to be developed and implemented downstream.
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No Action (cont.)
• Additional work to downstream infrastructure (roads and bridges) may be needed due to increased flooding.
• Upstream property values may be negatively affected.
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Helping People Help the Land
Decommissioning of Dam
• The footprint of the dam and spillway will be removed. The stream channel will be reconnected.
• Sediment may need to be stabilized by a grade stabilization structure or other means.
• Upstream property values may be negatively affected.
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Decommissioning of Dam(cont.)
• No flood damage reduction or protection will be provided. Contingency plans for catastrophic storm events will need to be developed and implemented downstream.
• Additional work to downstream infrastructure (roads and bridges) may be needed due to increased flooding.
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Relocation of properties at risk,repair dam
• The dam will not be rehabilitated, but may be repaired and operation & maintenance of the structure will continue.
• Residences, utilities, roads, and railroads within the breach inundation area downstream of the dam may need to be altered or relocated.
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Relocation of properties atrisk, repair dam (cont.)
• Measures should be taken to insure that the dam will remain at a low hazard classification and future downstream development limited and/or restricted.
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Dam Rehabilitation
• Update dam to current NRCS and state criteria for a high hazard dam, or initiate zoning requirements to maintain low hazard classification.
• Maintain upstream property values.
• Aesthetic value will remain.
• Retain existing benefits and protection.
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Helping People Help the Land
Dam RehabilitationAlternatives May Include
• Raising top of dam.
• Installing additional principal spillway pipe.
• Additional earthen auxiliary spillway or hardened surface auxiliary spillway.
• Installing a downstream impact basin.
• Installing hooded inlet structure.