The need for detailed plans describing the restoration of impaired waters is widely recognized in developed countries.
TMDL studies demand technically defensible models that translate pollutant loads into receiving water quality outcomes and support allocation across multiple source types. EFDC+ is widely recognized across North America as the go-to model for this work.
EFDC+ has supported dozens of TMDL studies across North America. EEMS streamlines the entire workflow — linking watershed model outputs, running load reduction scenarios, applying statistical tools, and producing clear visuals for regulatory audiences — all within a single integrated platform.
This is a textbook TMDL calculation: determining how much pollutant load a river can assimilate before violating water quality standards.
Same category of work, assimilative capacity for a specific discharge/waterbody.
Source apportionment (quantifying how much load comes from which source) is exactly the analysis used to build load allocations in a TMDL.
Mass-balance/loading calculations are the core computational basis for a TMDL.
Bacteria/pathogen impairments are one of the most common pollutants regulated under TMDLs.
