A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina North Carolina Floodplain Mapping State of North Carolina

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Web-Based Survey

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Web-Based Survey Survey ran from Jan Feb. 20 Ten different sections –IT –Data –Applications

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Web-Based Survey

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Responses As of Feb. 5, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Responses As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Responses County responded to survey As of Feb. 10, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina General Information 37% of the organizations - Providers 87% of the organizations - Users As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina General Information IT Operating Systems: –Win 95/9844.9% –Win NT61.0% –Win % –UNIX22.0% –AIX 7.6% –RS % –MAC OS 4.2% –Other 13.5%(not specified) As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina General Information IT Network Connections –Modem ( K)17.8% –128 K 5.9% –DSL 6.8% –Cable modem 5.8% –T150.8% –> T113.6% –Don’t know11.9% As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina General Information IT GIS Software –92.4% uses GIS or CAD As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina General Information IT GIS Software –ArcInfo68.6% –ArcView83.9% –GenaMap 0.8% –Erdas Imagine 5.9% –MapInfo11.9% –Small World<1.0% –SAS 3.4% –AutoCAD27.1% –ArcCAD 3.4% –Microstation 4.2% As of Feb. 20, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina DFIRM Results As of Feb. 5, 2001

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina DFIRM Results

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Elevation Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Elevation Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Flood Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Flood Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Flood Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Engineering Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Engineering Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Survey Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Survey Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Survey Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Base Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Base Data

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Potential Applications

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Potential Applications

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Additional Issues Requests –Well defined hydrologic units –CGIA offer desktop GIS products –Canopy height –Digital historic aerial photographs

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Conclusions (prelim.) WWW based availability of Floodplain related data would increase its usage Data access by: map panel, custom area and browser are preferred Data available in shape file and.e00 format Images: MrSID, JPEG and TIFF format Applications: Download data, real-time flood warning, Property/Flood boundary look-up

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Interview Questions

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Interview Who do you represent? How do you anticipate you will interact with the system? What is the most important aspect of this project to you?

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Applications Download data in native file types and coordinate systems –This would allow users to download floodplain data in a GIS format for use in spatial analysis and overlay mapping. Property / flood boundary lookup –The user will enter an address or parcel number and the system will zoom to the area and show a map with the flood boundary and the address. This will assist local communities in complying with existing flood ordinances. Example uses would include identifying homes in the 100-year floodplain or locating properties in the FEMA Floodway. Approximate floodplain mapping delineator –This would determine an approximate flood elevation at any location where the stream is not studied by FEMA or the upcoming NC Floodplain Project.

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Applications Real time flood warning and forecasting –View in real-time streams that are at or approaching flood stage and have the ability to predict when a river will reach its peak and the predicted stage at peak. Using these predicted stages - view a map of the floodplain resulting in this flood stage. View which roads are closed or overtopped. Spill modeling –A live application which would allow emergency response centers to respond to a hazardous waste spill and direct clean up crews to a particular location. The application will trace to spill to the extents of the State line and will give estimated times of arrival at various locations. Evaluation of rezoning requests –The impacts of rezoning requests could be evaluated using the GIS and modeling tools to determine the impacts to flood elevations based on rezoning requests and the following development.

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Applications Rainfall maps –View historical flooding rainfall data spatially distributed across the state. View real time rainfall data during a storm. The ability to print our download images of the rainfall depths and intensities. Inventory management –This application would allow users to view survey and attribute information about bridges, culverts and dams along a river or stream. Information available will include size, shape, number of culverts, length, bridge span, dam elevation, overtopping elevation, frequency of overtopping, etc. Users could also view and download digital pictures of the structure. Water quality analysis –Using data from computer models in the GIS, users could view impaired watersheds and streams based on given pollutants (nitrogen, sediment, phosphorus, etc)

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Applications Detailed Tracking of Data –Allow the State to determine who has a particular type of data so that if it is revised. Work order management –Assist the local communities comply with NPDES. The NC Floodplain Project will organize all of the terrain data as well as large structures. QA / QC of flood data –Allow stakeholders to check the quality of the data for their own purposes. Upload flood data revisions –Allow stakeholders to upload new data that the State may use to update the flood analysis. Examples of updates would include new culverts or bridges, modifications to existing culverts and bridges, etc

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina North Carolina Floodplain Mapping State of North Carolina Baker

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Agenda Welcome and Introduction Overview Web-Based Survey Interviews Wrap-up

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Work Plan FY 2003 FY2001 FY 2002

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Contents Responses to the Survey Results of the Survey Questions and Answers

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Survey Link ps.esri.com/ncflood/survey/

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Web-Based Survey

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Web-Based Survey

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Next steps Today System Design CTS meeting Final Presentation FEMA Interviews

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Thank you for participating in the interviews

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Other Information Hours saved: s Peak loads: 5-20 Peak Number of Users:

A Total Water Resource A division of Hayes, Seay, Mattern & Mattern, Inc. North Carolina Floodplain Mapping State of North Carolina Additional Issues Survey –Grueling –Thorough/Overwhelming –Too long –Pleased that the State is working on this project