Web-Delivered Application for Hydrogeologic Data

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DGS data, reports, and map products are increasingly being used by State agencies (DNREC, DelDOT, DDA, etc.), counties, and local governments to support land-use planning and resource-management decisions. Several existing and proposed regulations and ordinances cite these DGS resources and encourage and require their use for preparation of development plans and permit applications. Some agencies and consulting firms currently incorporate these resources into their business practices, while others use less reliable proxy data. Provision of DGS resources through a web-based data delivery application will standardize the availability and means of access to these resources for government agencies, developers, planners, consultants, and the public by creating more efficient access to the information.

This project is designed to deliver, by web-based technologies, the most commonly available and requested geologic and hydrologic information used in hydrologic studies required by regulation and ordinance and used by state agencies to support resource-management decisions. Available information can be associated with points or areas. Information associated with points includes descriptive logs, geophysical logs, raw and interpreted groundwater levels, aquifer and geologic unit identification, and hydraulic characteristics of wells. Information associated with areas is either in the form of raster-based (grid) data or polygons. Examples of raster-based data include water-table depths and elevations, tops and thicknesses of geologic and aquifer units, and aquifer transmissivity. Examples of polygons include surficial geology and groundwater recharge potential.

The intent of developing a web-technology enabled system is to provide a more intuitive and comprehensive toolset for locating, quickly viewing, and downloading the desired information in an efficient, extensible, and familiar manner.

This project was conducted in cooperation with the DNREC and successfully completed in February 2012. One of the results of this project was the Delaware Geologic Information Resource (DGIR.)