Floodplain Management
Flood Mitigation
Madison Marquette – University Mall: Project Engineer for a Feasibility Study regarding the flood protection of the existing University Mall. Estimates and evaluations were made for the options of floodproofing existing buildings and construction of an encircling flood wall, each to FEMA and Town of Chapel Hill standards. Coordinated with structural engineer for technical evaluation.
Town of Rocky Mount, NC – Winterberry Crossing Drainage Improvement: Project Engineer for an Engineering Assessment Study of Tributary 3 to Hornbeam Branch with particular focus on the frequent flooding of Winterberry Road and nearby houses. The engineering assessment included preparation of a hydrologic model using HEC-HMS and a hydraulic model using HEC-RAS, assessment of alternatives, and a final recommendation of changes to the stormwater drainage system as well as the construction of a small protective levee.
Floodplain Modeling & Analysis
Madison Marquette – University Mall Letter of Map Revision (LOMR): Project Engineer for revised assessment of existing development on Bolin Creek 100-year FEMA floodplain in Chapel Hill, NC. All hydraulic structures across from University Mall were assessed, including a pair of rectangular box culverts that were not included in the effective FEMA study. Modified the effective FEMA HEC-RAS hydraulic model to include new field and aerial survey data as well as to quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community endorsement.
M/I Homes – Alexander Crossing Letter of Map Revision (LOMR): Project Engineer for assessment of new residential development on Stirrup Iron Creek Tributary A 100-year FEMA floodplain in Durham, NC. Included development consisted of one double box roadway culvert crossing and associated fill. Also included for assessment two retaining walls not included in the effective FEMA study. Modified the effective FEMA HEC-RAS hydraulic model to include proposed and missing development as well as to quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community endorsement.
LV Realty – The Club at Longview Flood Study: Project Engineer for assessment of impact of existing and unpermitted golf course on Six Mile Creek 100-year FEMA floodplain in Union County, NC. Project included modifying the effective FEMA HEC-RAS hydraulic model to include modified topography and design for mitigation of any increases in the floodplain elevation.
Fairfield Properties – The Exchange at Charlotte 100+1 Flood Study and Culvert Design: Project Engineer for risk analysis of flood damage at residential multi-family development in Charlotte, NC. Developed a hydrologic model using HEC-HMS to develop flow rates for the 100-year event. Constructed a hydraulic model using HEC-RAS in order to quantify flood elevation. Mapped areas of inundation from an event 1 foot above the 100-year flood elevation using survey and GIS. Designed roadway culvert crossing according to inundation, HW/D, and erosion control requirements.
American Asset Corporation – Brier Creek Corporate Center Conditional Letter of Map Revision (CLOMR): Project Engineer for assessment of proposed commercial development on Little Brier Creek East 100-year FEMA floodplain in Raleigh, NC. Included development consisted of three single span roadway bridge crossings, two utility crossings, and associated fill. Modified the effective FEMA HEC-2 hydraulic model to include proposed development and quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community endorsement including City Council approval.
American Asset Corporation – Brier Creek Corporate Center Flood Study: Project Engineer for risk analysis of flood damage from an unnamed tributary to Little Brier Creek East in Raleigh, NC to a proposed commercial development. Developed a hydrologic model using HEC-HMS to develop flow rates for the 100-year event. Constructed a hydraulic model using HEC-RAS in order to quantify flood elevation. Mapped areas of inundation from the 100-year event flood elevation using survey and GIS.
Waterstone – Cates Creek Crossing Conditional Letter of Map Revision (CLOMR) and Culvert Design: Project Engineer for assessment of proposed mixed development on Cates Creek 100-year FEMA floodplain in Hillsborough, NC. Included development consisted of one ConSpan arch roadway culvert crossing and associated fill. Also included for assessment was an upstream roadway crossing that was incorrectly identified in the effective FEMA study. Modified the effective FEMA HEC-RAS hydraulic model to include proposed and incorrectly identified development and to quantify changes in flood elevation and extent. Designed roadway culvert crossing according to inundation and HW/D. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community and State endorsement.
Zimmer Development – The Shoppes at Waterford Conditional Letter of Map Revision (CLOMR): Project Engineer for assessment of proposed shopping center on Michaels Branch 100-year FEMA floodplain in Burlington, NC. Included development consisted of one single span roadway bridge crossing, two utility crossings, improvements to existing roadway, and associated fill. Also included for assessment were two roadway crossings, one stream restoration, and miscellaneous fill not included in the effective FEMA study. Modified the effective FEMA HEC-RAS hydraulic model to include proposed and missing development as well as to quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community and State endorsement after meeting with concerned neighboring property owners.
Toll Brothers – Fayetteville Road Assemblage Conditional Letter of Map Revision (CLOMR) and Culvert Design: Project Engineer for assessment of impact of proposed double rectangular box roadway culvert crossing on Southwest Creek 100-year FEMA floodplain in Durham, NC. Modified the effective FEMA HEC-RAS hydraulic model to include proposed development and quantify changes in flood elevation and extent. Designed roadway culvert crossing according to inundation, HW/D, and erosion control requirements. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community and State endorsement.
Newland Communities – Briar Chapel Conditional Letter of Map Revision (CLOMR): Project Engineer for assessment of proposed residential development on Pokeberry Creek 100-year FEMA floodplain in Chatham County, NC. Included development consisted of one triple span roadway bridge crossing, one triple pipe roadway culvert crossing, approximately five pedestrian bridges, and associated fill. Modified the effective FEMA HEC-RAS hydraulic model to include proposed development and quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community and State endorsement.
Gateway Homes – Preston Flats 100+1 Flood Study: Project Engineer for risk analysis of flood damage at residential multi-family development in Charlotte, NC. Developed a hydrologic model using HEC-HMS to develop flow rates for the 100-year event. Constructed a hydraulic model using HEC-RAS in order to quantify flood elevation. Mapped areas of inundation from an event 1 foot above the 100-year flood elevation using survey and GIS.
M/I Homes – Ballentine Flood Studies and Culvert Design: Project Engineer for risk analysis of flood damage at residential multi-family development in Charlotte, NC. Developed hydrologic models using HEC-HMS and USGS regression equations to develop flow rates for the 100-year event. Constructed a hydraulic model using HEC-RAS in order to quantify flood elevation. Mapped areas of inundation from the 100-year event flood elevation using survey and GIS. Designed four roadway culvert crossings (two reinforced concrete pipes and two ConSpan arches) according to inundation, HW/D, and erosion control requirements.
David Lutz – Lutz Homestead Letter of Map Revision (LOMR): Project Engineer for assessment of impact of new triple pipe driveway crossing on Buckwater Creek 100-year FEMA floodplain in Orange County, NC. Modified the effective FEMA HEC-2 hydraulic model to include new construction and quantify changes in flood elevation and extent. Revised associated official FEMA Flood Insurance Rate Maps (FIRMs) with local community and State endorsement.
Kurz Transfer Products, Lexington, NC – Flood Risk Assessment Study: Project Engineer for risk analysis of flood damage at manufacturing plant. Duties included construction of a hydraulic model using HEC-RAS, calibration to a recent flood event, and mapping areas of inundation using survey and GIS. Through analysis of statistical events, flood risk was developed for strategic structures on the site.
State of North Carolina Dept. of Agriculture & Consumer Services – Cherry Research Farm Floodplain Study: Project Engineer for assessment of impact of new construction on the Tar River 100-year FEMA floodplain near Greenville, NC. Project included modifying the effective FEMA HEC-RAS hydraulic model to include new buildings that obstruct flow as well as modified topography.
Site Solutions, Inc. – BBQ and Sunset Park Floodplain Studies: Project Engineer for assessment of impact of new construction on the Tar River 100-year FEMA floodplain in Rocky Mount, NC. Project included modifying the effective FEMA HEC-RAS hydraulic model to include new fishing piers as well as modified topography.
State of North Carolina Division of Emergency Management – North Carolina Floodplain Mapping Program: Team leader for the Raleigh engineering production team in an effort to restudy and re-map all streams in North Carolina regulated by FEMA for flood insurance protection. Performed, coordinated, and revised FEMA flood studies for the Lumber River basin. Scoped and / or managed database collection of hydraulic structure inventory using GPS and / or field survey as well as GIS in the Cape Fear and Catawba River basins. Used GIS for analysis and development of input data for hydraulic modeling and for mapping resulting floodplain. Performed statistical hydrologic analyses in order to develop and calibrate peak flows for the study of significant flood events. Utilized HEC-RAS to model floodplain hydraulics and develop maximum flood profiles for each event. Performed quality control checks of FEMA flood studies for the Lumber and Catawba River basins. Developed stream profile plots using CAD. Compiled documentation of hydrologic and hydraulic analyses into Technical Supporting Data Notebooks (TSDN). Organized data from hydraulic and hydrologic analysis for database upload. The project included close coordination with the client, FEMA contractors, company sub-contractors, distant offices, and internal departments of surveying and GIS mapping.
American Asset Corporation – Arco Corporate Drive Roadway Crossings: Project Engineer of proposed ConSpan arch culverts under roadway crossing Little Brier Creek in Raleigh, NC. Responsible for culvert sizing, scour analysis, and modification of effective FEMA study using HEC-2. The project included close coordination with surveying, land development, and transportation departments.
Software Evaluation
City of Charlotte, NC Storm Water Services – WISE Testing: Project Engineer for the evaluation of software used to develop models for stormwater and floodplain analysis. Models were constructed from GIS structural and terrain data and were summarized in an associated database. Duties included proficiency with the software and its methodologies, formulation and execution of tests of software performance, and analysis of product limitations as well as formulation of potential improvements.
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