Abstract
The purpose of the study is to enhance the watershed management for St. Tammany parish, LA through development of a model that will account for water quality impacts. Bayou Chinchuba in St. Tammany parish Louisiana is selected for this water quality model. Developed with HSPF (Hydrologic Simulation Program in Fortran), the model is used to calculate NO3, PO4, and BOD loading rates for varying scenarios of land use development. GIS tools are used to determine, visualize, and compare the total loads generated within sub-basins of the watershed based on the model simulation results. With the GIS calculation of NO3, PO4, and BOD total load and visualization enhancement, this tool simulates existing conditions and compares the water quality impact to 2020 expectation values.
Highlights
IntroductionAn HSPF (Hydrologic Simulation Program in Fortran) model has been developed that can be used to visualize the impact on water quality with changes in land use
LA through development of a model that will account for water quality impacts
An HSPF (Hydrologic Simulation Program in Fortran) model has been developed that can be used to visualize the impact on water quality with changes in land use
Summary
An HSPF (Hydrologic Simulation Program in Fortran) model has been developed that can be used to visualize the impact on water quality with changes in land use. The study area selected for this project is Bayou Chinchuba which is 5780 acres consisting of undeveloped land, commercial property, and residential development [1]. The main channel of Bayou Chinchuba is 7.5 miles in length and discharges to Lake Ponchartrain. The lower part of the watershed, nearest Lake Pontchartrain, has had rapid residential development over the past 10 years [1]. The upper end of the watershed is less developed, but overall development patterns in St Tammany parish suggest that this area will see development in the immediate future [1]. Without a comprehensive management approach to future land development
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