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Newport News Interim Local Resilience Plan
Lions Bridge Dam Improvements Final Report
CFPF Resilience Plan Element Document’s Relationship to CFPF Resilience Plan Element
1 Project Based This report is about the Lions Bridge Dam Improvements project, which improves flood control and resilience.
This Lions Bridge Dam Improvements Final Report documents the design of many improvements made to the Lions Bridge Dam, which was previously classified
as having a Significant Hazard Potential. Inspections of the dam were conducted, which provided data to assess the overall condition of the dam and develop and
implement a rehabilitation plan for the Principal Spillway and Low-Level Outlet.
Nuisance Flooding Report
CFPF Resilience Plan Element Document’s Relationship to CFPF Resilience Plan Element
1 Project Based This report proposes potential projects to reduce nuisance flooding.
2 Nature Based The nuisance flooding projects that utilized nature-based infrastructure to the maximum extent possible were prioritized and
were selected to continue the development of a conceptual design.
The Nuisance Flooding Report evaluated potential nuisance flooding projects by analyzing historical stormwater flooding data and considering the proximity to
coastal flooding, storm surge impacts, and the existing local stormwater drainage network. From the evaluation, four areas and projects were selected to be
scoped for nuisance flooding concept design solutions: subsurface storage, constructed wetland, vegetated bioretention, and driveway pipe upsizing. These areas
were identified as highly impacted by frequent flooding and containing undercapacity stormwater infrastructure. This report details the methodology and resulting
benefits provided by the concept designs for the four selected nuisance flood mitigation strategies. Implementation of these projects will make a more resilient
City.
Sea Level Rise Report
CFPF Resilience Plan Element Document’s Relationship to CFPF Resilience Plan Element
9 Best Science & Mapping This report uses the best available science and incorporates climate change and sea level rise into the projection of future
conditions.
The Sea Level Rise Report estimates the anticipated increase in elevation of day-to-day water levels and the timeframe in which each sea level scenario—1.5
foot, 3 feet, 4.5 feet, and 6 feet—are expected to occur (Table 1: Suggested planning horizons associated with the SLR values for the Newport News Climate
Change and Resilience Master Plan). This report is used to understand how future coastal water levels may change and the vulnerability of the City to increased
frequency and magnitude of flooding. It informs the development of strategies to decrease exposure to flooding. Quantifying future sea level rise and incorporating
these scenarios into future design and models will help the City adequately plan for future infrastructure, projects, and development.
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