RMA is a consulting engineering firm founded in 1974 that specializes in the application and development of numerical models and information technology for water resources engineering and environmental management. Our engineering analysis and software development services cover the full range of surface water problems including hydrology, hydraulics, estuarine hydrodynamics, water quality, cohesive and non-cohesive sediment transport, system operations, and restoration.

Our project experience ranges from analysis of sedimentation in small marinas to water quality modeling of large scale river-reservoir systems. We have modeled many of the major US river systems including the Columbia in the northwest, ACT-ACF in the southeast, Sacramento and San Joaquin River systems in California, the Red River of the North in Minnesota, and the Osage River in Missouri. The models we develop often become important tools used by multiple agencies over a series of multi-disciplinary studies; two important examples are the RMA models of Newport Bay and the San Francisco Bay-Delta in California.

Development of engineering software has always been an important aspect of our work. RMA development experience includes computational engines, data processing tools and database systems, data visualization using 2-D and 3-D animated graphics, geo-referenced mapping, graphical user interfaces, client-server and web-based applications. In addition to creating special purpose software to meet specific project requirements, RMA has participated in the creation of several widely used general purpose models.

One of our primary modeling tools is the RMA suite of finite element models for surface waters. Initial development of the RMA finite element models was funded by the USACE Waterways Experiments Station, and early versions of the models form the foundation of TABS and SMS software. We have continued to develop and extend the RMA suite of models which are now used by public agencies, private consulting firms, and academic institutions world-wide. RMA has also worked extensively with the USACE Hydrologic Engineering Center as their primary software development contractor creating several of their NextGen numerical models as well as the new Corps Water Management System for real-time water control.

RMA has provided services to a wide variety of federal, state, local and regional agencies, private sector and international interests. A representative list of our clients presented here.