Anne Arundel County Watershed Restoration Contract – North

In 2014 Underwood & Associates, Inc. (U&A) was awarded the Anne Arundel County Watershed Restoration Contract – North to retrofit stormwater management facilities and provide restoration construction services in the northern half of Anne Arundel County. The contract is renewable for five years. In the first year of this contract we completed 14 separate stormwater […]
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Briers Mill Run

Riverdale Park, MD Brier’s Mill Run is located on the Northeast Branch of the Anacostia River where it joins with Still Creek in Riverdale Park, Maryland. Riverdale Park is one of the most populated regions in the Anacostia watershed with 86% of the landscape developed. This project was the first of its kind undertaken by […]
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Linnean Gully

Washington D.C. BioHabitats Project This design/build was one of three projects constructed in Washington D.C. through the partnership of  District Department of the Environment (DDOE) and partially funded by the National Fish and Wildlife Foundation (NFWF). It is located at the terminus of Linnean Avenue in Soapstone Valley Park. Runoff from 18.46 acres traveled though […]
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Maryland Therapeutic Riding Center

Crownsville, Maryland U&A has restored a one mile reach of an urban stream, retrofit stormwater ponds with impervious areas that exceeded 40% and removed a dam to restore streams and associated wetlands in a 13 square mile drainage area.  But one of the most challenging, yet immensely rewarding, project we successfully realized was a design […]
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Linnean Park

Washington D.C. Biohabitats Collaboration Project The District Department of the Environment (DDOE) Watershed Protection Division (WPD) is using grant funds from the National Fish and Wildlife Foundation (NFWF) to install and monitor the performance of Regenerative Stormwater Conveyance systems (RSCs) in an ultra-urban watershed. DDOE has led coordination of the design and installation of two […]
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Pines on the Severn

Annapolis, Md This design/build project is located in Severn Maryland along Chase Creek. The Pines on the Severn Community Association worked for nearly three years before it was completed in the summer of 2015. This project was sponsored by the Department of Natural Resources and the Severn Riverkeeper. The goals were to convert 400 linear feet […]
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Broad Branch

Daylighting & Restoration of Linnean Park Tributary, Washington, DC The restoration of the Linnean Park tributary and daylighting and restoration of Broad Branch are two linked projects located in Northwest, Washington DC.  The goal of this effort was to restore in-stream habitat and improve the urban hydrology of these two tributaries that flow to Rock […]
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Cabin Branch

ANNAPOLIS, MD The Cabin Branch Stream Restoration project was designed to restore the headwaters of Saltworks Creek and treat highly polluted runoff from the adjacent shopping mall and warehouse store complex. It features three distinct prototype demonstrations for the Regenerative Design approach. First, a Legacy Sediment Removal End-of-Pipe restoration restored the upper 750 linear feet of stream into […]
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Broadneck Road Stream & Wetlands Restoration

Annapolis, Md Broadneck is a design/build project that restored a  stream which drains from the stormwater ponds behind the Department of Public Works depot on Broadneck Road toward Blossom Tree Drive in Annapolis.  This project serves as a demonstration for managing stormwater systems at facilities built prior to current stormwater management regulations, to bring them […]
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Arundel on the Bay

Anne Arundel County, MD This project, constructed by U&A over a seven week period beginning in November 2013, consists of a roadside bioretention system and a living shoreline in the Arundel on the Bay community. The South River Federation established clear goals for this project: water quality improvement and habitat creation within the project area. […]
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