Watershed/Hydrology

Dynamic Solutions LLC has assembled an outstanding staff of hydrologists and environmental engineers with extensive experience in watershed and hydrologic studies and modeling. Dynamic Solutions personnel have performed numerous hydrologic studies for Federal and State Agencies including the US Army Corps of Engineers, US Environmental Protection Agency and various municipalities. We have developed runoff hydrographs to drive the hydraulic models for flood studies, to assess the adequacy of storm drainage and sewer systems, to simulate watersheds and to predict and plan for the effects of future land use changes on flow, potential flooding, sediment transport and water quality. Our staff is proficient with the use of many watershed runoff and hydrologic models including:

• HEC-1, HEC-HMS, GEO-HMS, UNET
• SWMM, HSPF, TR-20, ADICPR, PRECIP
• AGNPS, PSRM, HYMO, DAMBRK

Selected examples of our watershed and hydrologic modeling projects include:

Watershed-Based Economic Benefits Analysis Study, USEPA Office of Wastewater Management. Dynamic Solutions evaluated hydrologic data from 5000 USGS gages and various large databases in 48 states for the period of 1961-1995 as part of a rigorous hydrologic analysis for the EPA OWM. The project involved linking and analyzing many existing federal databases.Performed analysis of rainfall events and urban hydrologic modeling of First and Second Creek watersheds in Knoxville, TN as part of investigation into causes of sanitary sewer overflows. Evaluated existing HSPF models and data inputs as part of project.

Dysart Woods Hydrologic Study. Performed hydrologic study of Dysart Woods, a small area of old growth forest located in Belmont County, OH.

Memphis Urban Stormwater Runoff Study. Applied HEC-HMS, as part of the Memphis Area Stormwater Runoff Study completed by the Memphis District USACE. Models were applied to three small tributaries of the Wolf River and one tributary of Nonconnah Creek. The purpose of this project was to evaluate flood damage reduction measures such as detention basins, channel modifications, and residential flood proofing.

DOE Stormwater Study. Conducted an extensive study of a large Department of Energy (DOE) storm drainage system. Used SWMM and a GIS interface program to determine which drainage elements would flood during design storms. Dynamic Solutions identified and prioritized proposed drainage system improvements.

Urban Sanitary Sewer Overflow Study, Knoxville Utilities Board. Dynamic Solutions performed an analysis of rainfall events and urban hydrology of First and Second Creek watersheds in Knoxville, TN as part of an investigation into the causes of periodic sanitary sewer overflows.

Third Creek Flood Mitigation Study, City of Knoxville. Dynamic Solutions applied HEC-HMS to develop hydrographs as part of a flood mitigation study to identify at-risk floodplain areas along Third Creek, a highly urbanized area of Knoxville, TN.