Hydraulic EngineeringU.S. Department of TransportationFederal Highway Administration CoastalScourBridgesCulvertsDrainageHydrology

By

A Presentation for

Scott HoganFHWA Resource CenterLakewood, CO

September 8, 2016

Sacramento, CA

FHWA 2D Modeling and Mapping

2016 Floodplain Management Association Conference

raulic Engineering

WA 2D Modeling and Mapping

rimary interests:  Transportation related hydraulics

Bridge hydraulicsBridge scourCulvert hydraulicsMultiple openingsRoadway encroachmentsFloodplain impacts (FEMA requirements (no‐rise / CLOMR / LOMR)

raulic Engineering

ent Hydraulic Modeling Tools

ttp://www.fhwa.dot.gov/engineering/hydraulics/ ‐ Software

Hydraulic ToolboxHydrology: WMS / HY‐12 (& Pump station design)Culvert Hydraulics: HY‐81D Modeling: HEC‐RAS2D Modeling: SRH‐2D/SMS

raulic Engineering

WA Publications / Guidance Documents

tp://www.fhwa.dot.gov/engineering/hydraulics/ ‐ Publications

DS 5, Hydraulic Design of Culverts ‐ 2012DS 7, Hydraulic Design of Bridges ‐ 2012C 17, Highways in the River Environment‐Floodplains, treme Events, Risk and Resilience 2016C 18, Evaluating Scour at Bridges ‐2012C 20, Stream Stability at Highway Structures ‐ 2012C 23, Bridge Scour Countermeasures – 2009

raulic Engineering

WA Publications / Guidance Documents

m HDS‐7

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WA Training

p://www.fhwa.dot.gov/engineering/hydraulics/ ‐ Training

I 135090 Hydraulic Design of Safe BridgesI 135041 One‐dimensional Modeling of River Encroachments with HEC‐RASI 135056 Culvert DesignI 135046 Stream Stability and ScourI 135048 Countermeasure DesignI 135095 Two‐dimensional Hydraulic Modeling of Rivers at Highway Encroachments

raulic Engineering

WA Technical Challenges

Getting people trained in the current technologySupporting untrained usersKeeping up with the latest developmentsAddressing FEMA floodplain requirements • No‐rise in 2D models?• Floodway delineation?• Maintaining effective FEMA models with a mix of models

• Resistance of floodplain administrators to change

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WA Areas of Improvement

Updated and improved modeling guidance (hard keeping up with latest developments)Transition to 2D modeling (reporting requirements)Guidance for FEMA requirements / submittalsEducation for floodplain administrators2D floodway delineation

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WA Future Developments

2D floodway delineation toolSRH‐2D 2D sediment transport custom SMS interface Community version of SMS for SRH‐2D

FHWA Every Day Counts Initiative• Increased training opportunities• Workshops to train others about 2D modeling • 2D bridge hydraulic modeling guidance• 2D floodplain modeling guidance

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me for CHANGE!

ollaborative

Hydraulics: 

Advancing to the 

Next 

Generation of

ngineering

‐4 – Exciting New Initiative!

raulic Engineering

Scott HoganFHWA Resource Center

Lakewood, COscott.hogan@dot.gov

(720) 963‐3742

stions?