Environmental regulations require the development and implementation of watershed plans to meet water quality
Environmental regulations require watershed plans that account for the full lifecycle of land development, from planning and construction through long-term water quality management. Engineers and regulators need modeling tools that trace how land-use changes propagate downstream to receiving water bodies.
EFDC+ is a leading platform for integrated watershed and hydrodynamic modeling, and pairs readily with watershed packages such as LSPC and HSPF to capture land-use-driven impacts. EEMS produces detailed visualizations of changes in temperature, salinity, sediment load, and water quality, giving program managers the insight to identify the most effective and cost-efficient strategies for reducing nonpoint source pollution.
This is evaluating a basin-scale best-management-practice (BMP) for reducing nutrient runoff, which is a watershed-planning/mitigation-strategy exercise rather than a regulatory load calculation.
BASINS is EPA’s dedicated watershed-modeling framework, so a plugin connecting to it is a direct watershed-planning tool.
HSPF is a standard watershed-scale hydrology/loading model used in watershed management plans.
Same rationale as above; covers the HSPF-EFDC+ integration from a different angle.
