What Dynamic Solutions does

Dynamic Solutions, LLC is a Knoxville, Tennessee-headquartered water resources engineering consulting firm founded in 1996 by Julie A. Wallen. The firm is a federally certified woman-owned small business with approximately 11-50 employees distributed across six offices in Knoxville, Baton Rouge, Columbus, Alexandria, Asheville, and Chattanooga. Its core capability is multi-dimensional (2-D and 3-D) surface water modeling for rivers, lakes, estuaries, and coastal waters, covering hydrodynamics, sediment transport, water quality, contaminant fate and bioaccumulation, and ecological/food web dynamics.

The company's technical portfolio is built around a curated stack of physics-based numerical models — EFDC, the USACE ADH model (for which DSLLC is the prime development contractor at ERDC-CHL), HSPF, CASM, Delft3D, HEC-RAS, SWMM, and CORMIX — augmented by the proprietary EFDC_Explorer GUI that DSLLC developed for pre- and post-processing EFDC simulations. Service offerings span consulting engagements (Hydraulics & Hydrodynamics, Watershed Studies, Sediment Transport, Water Quality, Ecological Modeling, PFAS Fate and Transport, Coastal Resiliency & Sea Level Rise, Litigation Support/Expert Witness, Applied Research, GIS) and a training practice (Hands-On Modeling Workshops, Short Courses). Customers include USACE (Jacksonville, Sacramento, ERDC-CHL, New Orleans districts), the U.S. EPA, the Florida Department of Environmental Protection, the Louisiana Department of Wildlife and Fisheries, CPRA, and NMFS, with documented projects on nationally significant water bodies including the Everglades, Sacramento-San Joaquin Delta, Louisiana Coast, Housatonic River, Passaic River, and Columbia River.

Dynamic Solutions generates revenue through professional consulting engagements paid under federal, state, and local government contracts (and selected private-sector work), delivered via direct enterprise field sales. Pricing is contract-based and not publicly disclosed. The firm is privately held and was acquired by DCCM, a national design, consulting, and program/construction management firm, on May 4, 2026, while continuing to operate under its existing leadership and team.

Name

Dynamic Solutions

Legal name

Dynamic Solutions, LLC

Website

https://dsllc.com

Company type

Private

Founded year

1996

Operating status

Acquired

Headcount range

11–50 employees

Short description

Dynamic Solutions, LLC is a federally certified woman-owned water resources engineering consulting firm founded in 1996 and headquartered in Knoxville, TN, providing multi-dimensional hydrodynamic, sediment transport, water quality, and ecological modeling services to USACE, EPA, and other federal, state, and local government agencies.

Ownership category

akta.pro rank

Product category

Water Resources Engineering Consulting

NAICS

Environmental Consulting Services (54162), Environmental Consulting Services (541620)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

akta.pro secondary industries

Water Quality & Watershed/Hydrologic Modeling (SWMM/HEC-RAS, Flood/Runoff/Nutrient) (EUAHAKAF), Flood Risk Modeling, Mapping & Forecasting (Hydrology/Hydraulics, Digital Twins) (EUANAEAH)

Keywords

• Water resources engineering
• Hydrodynamic modeling services
• Sediment transport consulting
• Watershed hydrology analysis
• Ecological modeling services

Headquarters

HQ city

Knoxville

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Professional Consulting Services: Dynamic Solutions, LLC generates revenue through specialized consulting services in water resources engineering, providing hydraulic modeling, sediment transport analysis, water quality modeling, and ecological modeling to federal, state, and local clients as well as private sector clients. The company serves some of the largest and most complex water resources and contaminated sediment sites in the nation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Dynamic Solutions, LLC provides specialized water resources engineering consulting services, with a core focus on 2-D and 3-D hydraulic/hydrodynamic modeling for rivers, lakes, estuaries, and coastal waters. Service offerings span sediment transport analysis, watershed hydrology, water quality modeling, ecological/food web modeling, PFAS fate and transport, coastal resiliency and sea level rise planning, GIS services, applied research, and litigation support/expert witness work. The firm also conducts hands-on modeling workshops and short courses in numerical modeling tools for government, academic, and private sector audiences.

Product overview

Dynamic Solutions, LLC is a federally certified woman-owned small business founded in 1996 that provides specialized water resources engineering consulting services. The company operates as a professional services firm rather than a software product company, offering a portfolio of modeling tools and training services alongside consulting engagements. Their core service offerings include multi-dimensional hydrodynamic modeling (using EFDC and ADH), watershed hydrology (HSPF), sediment transport analysis, water quality modeling, ecological/food web modeling (CASM), coastal resiliency planning, and litigation support. They are the first and leading commercial user of the USACE ADH model. The company maintains a staff of senior-level engineers and scientists and offers hands-on modeling workshops and short courses in water resources engineering topics including navigation engineering, numerical modeling, and sedimentation engineering.

Differentiator

Problem solved

Functional benefit

Products and services

• Hydraulics & Hydrodynamics Consulting 2-D and 3-D surface water modeling for assessments of flow, sea-level rise, pollutant loading, sediment dynamics, flooding, thermal discharge, water supply, and ecological conditions. Intended for federal, state, and local government agencies and private sector clients needing hydraulic and hydrodynamic analyses for rivers, lakes, and estuaries.
• Watershed Studies & Hydrology Watershed hydrology modeling and analysis for flood control, drought management, water supply studies, and nonpoint source runoff assessments. For agencies and clients requiring watershed-scale hydrology and water quality analyses.
• Sediment Transport Modeling Expert sedimentation engineering using physical process knowledge and state-of-the-art numerical models to assess sediment issues and identify optimum structural and non-structural solutions. For federal, state, and local agencies and industrial clients addressing sedimentation in rivers, estuaries, and ports.
• Water Quality Modeling Integrated surface water modeling frameworks including linkages between watershed runoff, hydrodynamic, sediment transport, water quality, and sediment flux processes for TMDL evaluations. For federal and state agencies, including EPA, conducting TMDL and water quality impairment assessments.
• Ecological Modeling Food web and ecosystem modeling including CASM applications, Individual Based Models (IBMs), and Wetland Value Assessments (WVAs) for evaluating ecological responses to ecosystem changes. For agencies and clients engaged in ecosystem restoration, fisheries management, and coastal diversion planning.
• PFAS Fate and Transport Modeling Surface water fate and transport modeling of PFAS (per- and polyfluoroalkyl substances) using advanced software such as EFDC, MIKE, AQUATOX, WASP, and MODFLOW. For federal, state, and industrial clients addressing PFAS contamination in surface water systems.
• Coastal Resiliency & Sea Level Rise Consulting Sea level rise and coastal storm flooding analyses using state-of-the-art models to test infrastructure improvement effects and create resilient community planning. For state, local, and federal agencies and communities preparing for coastal hazards and sea level rise.
• Litigation Support and Expert Witness Technical expert support for litigation cases involving environmental compliance, navigation issues, contaminated sediment sites, barge accidents, and water quality disputes. For attorneys, agencies, and parties requiring expert testimony and technical analysis in water resources disputes.
• Applied Research Advanced research applications including compound flooding simulations, hurricane impact modeling, and oyster larval transport metapopulation modeling. For federal agencies and research sponsors requiring complex applied research in water resources.
• GIS Services GIS data development and utilization for hydrologic and hydraulic modeling and environmental analyses using ESRI, Intergraph, and AutoDesk products. For projects across the firm's federal, state, and private sector engagements requiring geospatial data preparation and analysis.
• Short Courses and Training On-site training in water resources engineering including Navigation Engineering, Water Resources Modeling, Sedimentation Engineering, and Data Analysis courses. For government staff, students, and private sector practitioners needing formal instruction in advanced modeling and engineering topics.
• Hands-On Modeling Workshops Professional training courses covering HSPF, EFDC, ADH, CONCEPTS, EFDC Explorer, and SMS software tools, combining classroom instruction with hands-on model creation and operation. For professionals and modelers seeking applied training in these specific modeling tools.

Quantifiable outcome

• Validated hydrodynamic models matched to 137+ gaging stations with 80% of peak water levels within 1-m of observed for Hurricane Harvey compound flooding simulation
• +2 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core and minor.

• DCCMcoreStrategic or Co-development Partner · 4 May 2026DCCM, a national provider of design, consulting, and program and construction management professional services, acquired Dynamic Solutions, LLC in May 2026. The acquisition expands DCCM's technical capabilities in water and environmental modeling while Dynamic Solutions continues operating with its existing leadership and team.
• USACE ERDC Coastal and Hydraulics Laboratory (CHL)coreStrategic or Co-development PartnerDynamic Solutions is the prime contractor supporting development of the USACE's state-of-the-art ADaptive Hydraulics (ADH) model software at ERDC-CHL. DSLLC is developing the 2-D and 3-D versions of ADH software and providing modeling assistance on hydrodynamic and sediment transport applications worldwide.
• U.S. Environmental Protection Agency (EPA)coreStrategic or Co-development PartnerThe US EPA has continued to support development of EFDC, which is now part of a family of models recommended by EPA for Total Maximum Daily Load (TMDL) projects. Dynamic Solutions has been a leading user of EFDC since 1996 and developed the EFDC_Explorer software tool.
• Coastal Protection and Restoration Authority (CPRA)coreStrategic or Co-development PartnerDSLLC worked closely with CPRA and NMFS on project modification teams for the Caernarvon and Davis Pond Diversions to provide detailed description and review of available ecosystem modeling approaches. Dynamic Solutions was instrumental in developing CPRA's 2017 Coastal Master Plan: Strategy for Selecting Fish Modeling Approaches.
• National Marine Fisheries Service (NMFS)coreStrategic or Co-development PartnerDSLLC collaborated with NMFS on project modification teams for Louisiana coastal diversion projects to provide ecosystem modeling approaches and evaluate population responses to diversion operational alternatives.
• Louisiana Department of Wildlife and FisheriesminorStrategic or Co-development PartnerDSLLC uses field and long-term monitoring data collected by LDWF within Louisiana coastal systems to verify and update food web model parameters for the Myrtle Grove ecosystem restoration project.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Tetra Tech: Largest U.S. water resources and environmental engineering consultancy, with practices spanning EFDC, ADH, HEC-RAS and TMDL work similar to DSLLC's offerings. Direct federal contracting competitor to USACE and EPA, with dramatically larger bench.
• Jacobs: Global engineering and consulting firm with a significant water resources, coastal, and environmental modeling practice serving USACE and EPA. Competes for the same federal modeling task orders as DSLLC but at significantly larger scale.
• AECOM: Global infrastructure and environmental consulting firm with established surface water, sediment transport, and coastal engineering practices that mirror DSLLC's service lines. Pursues the same USACE, EPA, and state-level water resources contracts.
• HDR Inc. Large engineering consultancy with established water resources, coastal, and environmental modeling practices serving federal and state clients. Competes for USACE and EPA modeling IDIQs with substantially deeper bench.
• Stantec: Global engineering and environmental consultancy with a sizable water resources practice spanning riverine, coastal, and watershed modeling. Competes for federal and state water resources contracts alongside DSLLC.

Direct peers

• WEST Consultants: Specialized water resources engineering and modeling consulting firm focused on riverine, estuarine and coastal hydrodynamic and sediment transport modeling using tools like EFDC and HEC-RAS. Closest direct peer in size, specialization, and federal/state client mix.
• LimnoTech: Environmental and water resources consulting firm specializing in hydrodynamic, water quality, and ecological modeling for rivers, lakes, and estuaries. Direct competitor to DSLLC on USACE/EPA surface water modeling and TMDL engagements.
• Kleinschmidt Group: Engineering and scientific consulting firm focused on water resources, hydropower, fisheries, and aquatic ecology with comparable federal agency client base (USACE, FERC, USFWS). Direct peer in multi-disciplinary water-resource consulting for federal clients.
• Moffatt & Nichol: Coastal, port, and water resources engineering consultancy with deep USACE and navigation district relationships, including dredging, sedimentation, and hydrodynamic modeling. Direct competitor on coastal/estuarine modeling engagements.
• GEI Consultants: Mid-size engineering and environmental consulting firm with practices in water resources, dam/levee safety, and surface water modeling. Competes for similar USACE, EPA, and state-level federal contract vehicles as DSLLC.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Dynamic Solutions