Collier, C. R.. Delaware River Basin Commission, ccollier@drbc.state.nj.us
Webber, P. R.. Delaware River Basin Commission, pwebber@drbc.state.nj.us
Sharp, J. H.. Graduate College of Marine Sciences,U. of Delaware, jsharp@cms.udel.edu
Gallagher, T. W.. HydroQual, Inc., tgallagher@hydroqual.com
Mooney, K. G.. HydroQual, Inc., kmooney@hydroqual.com

 
TEAM EFFORT TO IMPROVE WATER QUALITY OF THE TIDAL DELAWARE RIVER
 
The Delaware River Basin Commission (DRBC), a unique federal/state agency, was founded in 1961 to manage the water resources of the 12,765 square mile basin. A major goal has been improving the once grossly-polluted tidal Delaware River. The 85-mile stretch of tidal water serves municipal populations including Philadelphia, heavy industry, power generation, shipping ports, living resources, and recreational activities. The predictive water quality models that guided the initial pollution abatement are being replaced by a state-of-the-art model for evaluating additional improvement in dissolved oxygen and bacteria concentrations. The model couples a hydrodynamic component partially calibrated with NOAA survey data and a water quality component verified by our 30-year monitoring data set. Development of the new modeling has involved a unique team effort with a consultant (analysis and model framework), a Peer Review Team (nationally renowned experts), state environmental agencies (water quality, biomass data), and academic studies (aquatic vegetation, sediment flux, dye dispersion). Examples of fit of the model to water quality data will be presented. In addition to this new model, which is being used to develop total maximum daily loads (TMDLs) for dissolved oxygen and bacteria, the DRBC has a toxics-reduction model being used for other TMDLs.
 
Day: Wednesday, Feb. 3
Time: 09:15 - 09:30am
Location: Sweeney Center
 
Code: SS08WE0915S