Thank you for the significant work that went into developing the Draft Virginia Coastal Resilience Master Plan Phase II. Bringing coastal, rainfall-driven, and riverine flooding into a unified regional framework is an important advancement for the Commonwealth. In particular, I appreciate the plan’s recognition that rainfall-driven flooding may ultimately affect a much larger geographic area than coastal flooding alone. That is an important shift in thinking and reflects the reality many Virginia communities are already experiencing, especially given the lag in the release of Atlas 15 Volume 2, and future increased precipitation amounts.

That said, after reviewing the draft, I believe there are several opportunities for improvement that should be considered before the plan is finalized.

The most significant is compound flooding. The plan acknowledges compound flooding as a concept, but also states that it is not specifically addressed in the analysis. In my opinion, this is one of the most important flood risks facing coastal Virginia. In many communities, flooding does not occur from a single source. High tides, storm surge, saturated soils, rainfall intensity, overwhelmed drainage systems, and riverine conditions often occur simultaneously or in close succession. This is especially true in Hampton Roads and along Virginia’s tidal river systems. I would hope that future iterations of the plan prioritize development of a compound flooding framework in the highest-risk regions.

I am also concerned about the limited treatment of future riverine flooding conditions. The plan notes that climate change impacts on riverine flooding were not available and that much of the riverine analysis relies heavily on FEMA Special Flood Hazard Area mapping. That creates a risk of underestimating future flooding exposure in places such as Richmond, Petersburg, Hopewell, and along the James River corridor, where increased precipitation intensity and sea level rise may amplify backwater and drainage impacts.

Another important limitation is the absence of detailed stormwater infrastructure performance analysis. The plan acknowledges this limitation, but in urbanized areas, pipes, culverts, pump stations, and drainage system capacity are often the determining factors between nuisance flooding and catastrophic flooding. Without incorporating infrastructure performance and failure assumptions, some local flood risks may be understated.

I would also encourage the Commonwealth to strengthen the implementation side of the plan. The inventory of projects and initiatives is valuable, but many localities still lack the staffing, technical expertise, and grant-writing capacity needed to move projects from concept to construction. Smaller communities especially will need more direct technical assistance if resilience goals are to be achieved equitably across the region.

Finally, I believe the plan should more directly address long-term land use policy and strategic relocation. Elevating infrastructure and constructing flood protection systems will remain necessary in many locations, but there are also areas where continued investment in repetitive redevelopment may not be sustainable over the long term. That is a difficult conversation politically, but an important one technically and financially.

Overall, I believe this is a strong and necessary planning document that advances the Commonwealth’s understanding of flood risk. My concern is that Virginia now risks having increasingly sophisticated flood maps without a sufficiently clear pathway toward implementation, prioritization, and long-term adaptation policy.

Thank you again for the opportunity to review and comment on the draft plan.

With Respect,
Chris Stone

I think my concerns would be how expensive is this going to be to Norfolk and VB residents, since they are going to bear the brunt of the financial burden?