Arkansas Silver Jackets
The Arkansas Silver Jackets team strives to assist the State by dealing with a range water resource issues. The advantage to a Silver Jackets team is the ability to focus resources from multiple Federal, State, and local agencies to achieve a common goal. The common goals of the Arkansas team includes building a State Light Detecting and Ranging (LiDAR) terrain dataset, supporting the recent State Water Plan, supporting State Hazard Mitigation, developing Dam and Levee Standards, and many other water resource related issues. The team has found success through the diligent efforts of the participating agencies.
Bob Kidd Dam Flood Risk Assessment and Mitigation Plan
The Arkansas Silver Jackets Team is currently participating in a multi-purpose study to assess flood hazards, residual flood risk, dam break flood risk scenarios, and a mitigation strategy with an effective emergency response and communication plan, such as early warning systems. As part of Silver Jackets strategy, this is a multi-agency study with Arkansas Natural Resource Commissions (ANRC), U.S. Geological Survey (USGS), Arkansas Department of Emergency Management (ADEM), and U.S. Army Corps of Engineers (USACE). USGS will conduct the dam assessment and install reservoir stage gage, and USACE will conduct an H&H analysis of the watershed and assess downstream flood risks and dam safety vulnerabilities. ANRC and ADEM will provide technical assessment of flood impacts on the community and strategies for emergency response. The initial risk assessment of the dam will be used to develop mitigation strategies. This helps facilitate shared responsibility for flood risk and acknowledge and communicate residual risk of structural flood risk solutions. The report and communication tools will also serve as a template for other communities in the state. This non-structural project will enhance community resiliency from flood risks.
2011 Post Flood Assessment and Inundation Mapping
The State Silver Jackets Team worked to assess the devastating floods that occurred in the Spring of 2011 across Arkansas and Southern Missouri. The flood claimed 13 lives in Arkansas and Missouri and resulted in disaster declarations for 59 Arkansas counties. The project scope resulted in inundation maps calibrated to 122 collected high water marks data and flood-frequency analysis at 37 streams gages. The flood-frequency analysis resulted in one stream gage flood probability of less than 0.2% (greater than 500 years) and three stream gages with a flood probability of less than 0.5% (greater than 200 years). The resulting flood data is used by Federal, State, and local agencies to make informed decisions in meeting mission requirements related to flood hazard mitigation, planning and response. This multi-agency efforts involved members from the U.S. Geologic Survey (USGS), Federal Emergency Management Agency (FEMA), U.S. Department of Homeland Security (DHS), U.S. Army Corps of Engineers (USACE), and Arkansas Natural Resource Commission (ANRC). The project was a major success and the resulting data has been used by state and local officials in Levee Safety, Dam Safety and Emergency Management.