Four Mile Run drains a twenty square-mile heavily urbanized watershed in Northern Virginia to Potomac River. Federal funding for a channel modification project, which was constructed in 1980 following several devastating floods, required the local jurisdictions to prevent any increases in flood risks due to developments in the watershed. Streams Tech evaluates the impacts of site development and other construction projects using a watershed model and recommends suitable control measures, if necessary.

Streams Tech conducted a detailed technical study, including modeling, to develop a stormwater management master plan for Freetown – the capital of Sierra Leone. Intense rainfall often causes major flooding and landslides in the city. Streams Tech team compiled extensive GIS data, processed remote-sensing-based data, surveyed hydraulic structures and drainage geometries, and collected climatological and streamflow data over a rainy season to support the modeling and drainage analysis. Various mitigation options, including on-site detention storage, restoration of natural watercourses, channelization, changes to land use planning, replacement of bridges and culverts, and relocation of settlements in the flood plains, were evaluated, and specific solutions were recommended to attenuate the extent and risk of flooding.

The Government of Bangladesh wanted to maximize its renewable energy supply to support its fast economic growth. Streams Tech carried out a hydropower feasibility study to identify the potential sites for both the reservoir and run-of-river type hydropower plants in the hilly southeastern region of the country. In this World Bank-sponsored project, a scientific and systematic approach was followed to estimate the power potential at nineteen sites despite the challenges presented by the lack of local data. Streams Tech utilized satellite-based rainfall and digital topographic data together with advanced GIS-based analysis and hydrologic modeling to identify the locations of significant hydraulic heads, estimate long-term stream flows, generate flow-duration and energy-duration curves, calculate the maximum power and energy potential, and map the reservoir inundation zones. The government made major investment decisions on hydropower based on the findings presented in the study report. In 2020, this project won the South Asian Esri GIS Award.

Streams Tech developed bacteria total maximum daily loads (TMDLs) for 9 impaired streams in the Hyco River watershed and associated tributaries, which have a drainage area of 250 square miles and are located between Richmond, Virginia and Raleigh, North Carolina.

Streams Tech developed bacteria TMDLs for nine impaired streams in the tributaries of the Potomac River watershed, which has a drainage area of 137 square miles. The paired-watershed approach, which was developed by Streams Tech, was implemented in this project. The United State Environmental Protection Agency (EPA) and the Virginia State Water Quality Control Board approved the TMDLs.