Integrated Flood Observation and Warning System IFLOWS Pilot

Integrated Flood Observation and Warning System (IFLOWS) Pilot Project Update Dan Bradway September 18, 2019

Agenda • Background • Concept • Progress • Challenges • Next Steps

Background: Middle and Upper Rappahannock River Basin Gauge Installation • A USACE report identified a need for hydrologic data along the river basin for flood warning and water quality monitoring • In 2013, VDEM and RRBC partnered to install gauges in accordance with the report’s recommendations • Project stalled for several years • In March 2019, U. S. DHS contacted VDEM about helping evaluate new Io. T flood sensors

Pilot Concept • The project seeks to model aspects of the “desired state” of IFLOWS • Evaluate Io. T flood sensors and telemetry • Densify sensor network • VDEM-locality partnership for O&M • An opportunity to gain lessons learned before implementing upgrades system-wide • The project leverages resources and aligns several existing initiatives • IFLOWS Study provides concrete recommendations to implement • The Rappahannock Gauge Installation Project provides the test area • DHS provides flood sensors

Rappahannock River Basin Gauge Installation IFLOWS Assessment Study Recommendations VDEM IFLOWS Pilot Flood Apex Io. T Low-Cost Flood Inundation Sensor Evaluation

Pilot Project Goals • Increase hydrologic monitoring in areas vulnerable to flooding to support NWS forecasting and bolster decision-support for emergency managers • Model the “desired state” IFLOWS for stakeholders by piloting new equipment, telemetry and O&M structure that provides increased density and reliability while remaining fiscally sustainable • Gain lessons learned before implementing changes system-wide

Pilot Project Phases PHASE 1: Planning and Preparation Present – Oct 1 PHASE 2: Installation Oct 2 – Dec 1 PHASE 3: Testing and Evaluation Dec 2 - May 1, 2020 PHASE 4: Closeout May 2 - Jun 1

Progress • Planning workshops and informational briefings • Flood sensor sites identified • Flood sensors received

Challenges • Installation and maintenance contract quote higher than initial cost estimate • Maintaining an expanded network

Next Steps • Finalize installation and maintenance contract • Begin installation

Questions