Dynamic Solutions

Water Quality

Water Quality & Eutrophication Services: DSLLC uses a structured assessment approach to sediment problems, first defining the problem, the site, and the constraints to find a natural solution.

Water quality conditions in surface waters are defined by physical, chemical, and biological processes within the water column and sediment bed. Analysis and modeling of water quality is vital to protecting water supplies and managing healthy ecosystems. An integrated surface water modeling frameworks includes linkages between watershed runoff, hydrodynamic, sediment transport, water quality, and sediment flux processes. Dynamic Solutions specializes in developing these frameworks to provide clients with a sound technical basis to evaluate management options for point and nonpoint source load allocations, including Total Maximum Daily Loads (TMDLs), to meet water quality goals.

DSLLC engineers are experienced in the application of public domain water quality models supported by the US Army Corps of Engineers (CE-QUAL-W2, CE-QUAL-ICM) and the US Environmental Protection Agency (HSPF, WASP7, QUAL2K, and EFDC). We are leaders in the use of the US EPA’s Environmental Fluid Dynamics (EFDC) code. DSLLC engineers have worked extensively on code development, the pre- and post-processing interface EFDC_Explorer, and performed scores of applications of the model worldwide. We have developed water quality models for lakes and reservoirs in Oklahoma; estuaries in Florida, Texas and California; and the coastal waters of St. Croix in the US Virgin Islands. In the Sacramento-San Joaquin Delta of California the restoration and maintenance of ecological resources and the availability of an abundant clean water supply are the two key goals for water resource planning. In support of these objectives, DSLLC has developed hydrodynamic, sediment transport, and water quality models that are linked with ecological and fishery resource models to address water management issues that affect key biological resources. For the Caloosahatchee River and Estuary DSLLC developed a linked watershed-receiving water quality model to inform a TMDL study. Additionally, a tool was developed to use light extinction data from the water quality model to map sea grass habitat in the estuary. EFDC has been proven to be a solid tool for performing water quality assessments in a variety of environments.

Please read about some of our Water Quality studies below:

Caloosahatchee River Water Quality Modeling – EFDC

Sacramento-San Joaquin River Delta Modeling – EFDC

Perdido Bay Water Quality Modeling – EFDC

St. Lucie Estuary Hydrodynamics and Water Quality – EFDC


Read more about the EFDC Model