Info

NVision serves the decision support system through an ESRI ArcIMS Java website running on top of an ArcSDE / SQL Server 2000 database. NVision aggregated all available geographic data into this geo-database which is also available to parish departments through the Web using any ArcGIS or other SDE compatible ESRI software. All parish officials have access to the same versioned geographic data to streamline data sharing throughout the St. Tammany. The NVision team completed Phase 1 of this project and continues to improve the geo-database and has nearly finished porting the flood model to a custom Java application that will provide improved flood inundation modelling. For real-time data sensors NVision integrated USGS Stream Guages as a point layer on the map. This layer is updated every 15 minutes. NVision also integrated an experimental NEXRAD Doppler Radar layer updated every five minutes to show the latest precipitation over the parish. In the next phase of the project NVision will integrate approximately 25 low-cost wireless stream guages throughout the parish to model stream conditions as completely and accurately as possible. This stream data will be integrated into the decision support system. NVision CIO Craig Harvey initially envisioned this model which NVision prototyped in the "RiverWatch" demonstration product below.