Corps Completes Portneuf River Flood Reduction Project Periodic Inspections
|Targeted News Service|
The levee systems' "unacceptable" ratings mean they may not provide the designed level of flood reduction and are not eligible to apply for federal rehabilitation assistance if damaged in a flood or storm event.
"The City has made progress in correcting some of the deficiencies identified during previous inspections, however more maintenance work is needed to make sure levee systems perform as designed and do not present unacceptable risks to the public, economy or environment," said
* System 2 begins upstream of
* System 3 begins approximately 245 feet downstream of
* System 4 begins near high ground upstream of the concrete channel as a revetted channel. The system continues downstream until reaching the concrete channel near
System 5 begins approximately 230 feet upstream of
Inspections and assessments provide continuous feedback about levee systems and their reliability, and are a critical part of the Corps' Levee Safety Program. Routine inspections, conducted annually, focus on the operation and maintenance of the project. These annual inspections verify the project sponsor operates and maintains the levee to achieve the maximum benefits the levee was designed to provide. Routine inspection items include vegetation, encroachments, drainage structures, erosion, animal burrows and culverts. Routine inspections result in an acceptable, minimally acceptable or unacceptable rating and affect the project's eligibility for federal rehabilitation assistance under Public Law 84-99 if damaged in a flood or storm event.
The periodic inspection is the next level in the levee safety program and is conducted by a multidisciplinary team, led by a professional engineer. It includes a more detailed, comprehensive and consistent evaluation of the condition of the levee system and will be conducted every five years. Activities under the periodic inspection program include routine inspection items; verifies proper operation and maintenance; evaluates operational adequacy, structural stability and safety of the system; and compares current design and construction criteria with those in place when the levee was built.</p>
The final periodic inspection rating is based upon the routine inspection items, and includes an acceptable, minimally acceptable or unacceptable rating. Additional periodic inspection information that will be shared with the project sponsor includes identification of components and features that require monitoring over time.
The executive summary of the levee's most recent periodic inspection reports can be obtained by contacting
The National Levee Safety Program Act of 2007 directs the development of a national levee safety program, in addition to the inventory and inspection of levees nationwide. More information about the Corps' National Levee Safety Program is available on the Web at www.usace.army.mil/Missions/CivilWorks/LeveeSafetyProgram.aspx.
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