Abstract
 Comprehensive Hydrology Modeling in a GIS Environment Track: Water Resources Author(s): Barry Schamach, Mark Boucher, Wiley Osborn, Chris Hallford Historically, Contra Costa County Public Works Department performed hydrology modeling using a FORTRAN program and hard-copy watershed maps. The modeling program required a stand-alone PC to perform calculations, and the annotated watershed maps often existed only as hard copies, putting them at risk. Public Works needed a better way to manage its hydrology data. The first step was converting the modeling program from FORTRAN into a PL/SQL database package. The package generates/stores peak storm flows, helping engineers determine the infrastructure necessary to handle the increased runoff that development generates. The second step was converting the existing watershed maps, which are used to organize and georeference all previous calculations, into a new watershed layer. GIS stores/retrieves the watershed's input parameters (zoning, roughness, annual rainfall, infiltration, etc.), and then, after running the modeling software, the GIS layer provides georeferencing for all hydrology calculations, allowing better access and utilization of the information. Barry Schamach Contra Costa County Public Works 255 Glacier Dr Martinez , CA 94553 US Phone: 925 313-2185 Fax: 925 313-2333 E-mail: bscha@pw.cccounty.us Mark Boucher Contra Costa County Public Works 255 Glacier Dr Martinez , CA 94553 US Phone: 925 313-2274 E-mail: mbouc@pw.cccounty.us Wiley Osborn Contra Costa County Public Works 255 Glacier Dr. Martinez , CA 94553 US Phone: 925 313-2019 E-mail: wosbo@pw.cccounty.us Chris Hallford Contra Costa County Public Works 255 Glacier Dr. Martinez , CA 94553 US Phone: 925`313-2295 E-mail: chall@pw.cccounty.us |
|||||
