Developed and launched STORM, an app that displays data collected by residents and City staff during a storm event detailing flooded streets, downed power lines, and other problems.
Improved resident decision-making around flood risk by allowing them to look up their property to identify the risk of flood across their mortgage period.
Collected and analyzed data for Norfolk City Council to demonstrate which neighborhoods are in need of more local, healthy grocery options.
A Two-Pronged Strategy
Norfolk’s data-driven resilience strategy is a two-pronged approach that focuses on both residents and the City’s own flood management efforts. On the external side, IT developed and launched STORM, an app that displays data collected by residents and City staff during a storm event detailing flooded streets, downed power lines, and other problems. The data from this tool was later posted to the Open Data Portal so everyone could access it.
In March 2021, the City took its resilience efforts to the next level with the launch of the Flood Risk Learning Center. Expanding on the City’s successful TITAN application, which shows residents the flooding levels from past storm benchmarks based on the Norfolk Tide Gauge dashboard, the new Learning Center gives residents the ability to generate personalized flood risk reports based on their building address. Reports also include FEMA resources and tips to lower flood insurance costs.
Built with Civis Analytics, the Learning Center incorporates audience-specific messaging to improve resident decision-making around flood risk. By allowing people to look up their property and identify the risk of flood across their mortgage period, the information has more impact. “When you give them information like: ‘There is a 96 percent chance of 1.25 feet of flooding happening during your 30-year mortgage’ — that’s when you see the aha moment,” says Matt Simons, principal planner in the City’s Planning Department.
Even during its pilot phase, the Learning Center’s improved floodplain mapping services was partially responsible for Norfolk’s increased score in FEMA’s National Flood Insurance Program (NFIP) Community Rating System (CRS), which incentivizes communities to go beyond minimum NFIP flood management practices. The City is a top CRS community in Virginia and in the top 10 percent of cities nationwide. This increased score has translated into a 25 percent reduction in the premium for Norfolk’s flood insurance policyholders, amounting to $2.5 million in annual savings — about $200 per policyholder.
“Through the Learning Center, we are translating data to help people make improvements to their properties that reduce flood risk, buy more appropriate flood insurance plans, and save money on their existing policies,” Simons says.
The most tangible improvements made through Norfolk’s resilience strategy may be in the City’s impressive system of tide gauges. Before their installation, staff had to monitor certain areas for flood risk, driving around to visually check for rising waters. Now, every six minutes, tide gauges record a water level reading. Data flows to the Tide Gauge dashboard, helping the City determine when to close its flood gates. All of this is done remotely by staff monitoring flood risks in real-time. They’re able to efficiently dispatch crews to targeted areas for mitigation efforts and alert residents about flood risks (or actual flooding) via digital devices.
In neighborhoods plagued by regular flooding — like Tidewater Gardens adjacent to downtown — these sensors are informing plans for new stormwater systems that incorporate more drainage systems, pump stations, and green space for rainwater absorption. All of this data is stored for long-term use, helping to inform engineers’ designs and predict water levels 36 hours out. Another benefit of the data: It helped the City and state win large grants, including a $100 million flood control project via the U.S. Department of Housing and Urban Development.