White Paper: New One-Dimensional Implicit Numerical Dynamic Sewer And Storm Model
A one-dimensional hydrodynamic numerical model has been developed and implemented into Haestad Methods’ hydraulics software for modeling of unsteady flows in sewer and storm water urban drainage system. The new numerical model uses an implicit four-point, finite difference solution technique to solve the one-dimensional Saint-Venant equations. Advanced numerical techniques, such as Local Partial Inertial modification (LPI) for subcritical, supercritical, and transitional flows, and relaxation for pipe/channel networks, are used to achieve computational performance and robustness as required for practical use in a water resources engineering commercial software package
White Paper: Comparison Of Stormwater Quality Treatment Guidelines And Critical Structural Best Management Performance Factors And Parameters To Consider
Provisions to protect source water have become an important consideration in urban
development in North America. In the United States, Phase I and Phase II of the U.S.
Environmental Protection Agency’s (EPA’s) stormwater program require
owner/operators to address stormwater runoff pollution issues. The program relies on
National Pollutant Discharge Elimination System (NPDES) permits to implement
programs and practices to control polluted stormwater runoff...
Case Study: GIS Applications In Urban Drainage Master Planning
This study reveals GIS to be as an indispensable, multi-purpose tool for infrastructure master planning that enables sophisticated desktop analyses, efficient simulation model pre- and post-processing, and effective data management and communication, all through the use of intrinsic functionality and readily available online utilities.
Case Study: New Option For Stormwater Treatment Maximizes Usable Land Area For Redevelopment
In June 2002, First Independent Bank of Vancouver, Wash., began construction on its 15,000 square-foot First Investments Plaza ofﬁce complex.
Case Study: Chemical Company Achieves Compliance While Pretreating Water For Use On Public Golf Course
A worker at Millennium Specialty Chemicals of Jacksonville, Fla. monitors a cooling water tank gauge.