south river restoration

The Annapolis Harbour Center Stream and Wetland project will improve habitat, increase floodplain connection, and prevent bed and bank erosion. This particular project focuses on controlling flows and providing habitat at the bottom of existing outfalls, through the use of a step-pool storm conveyance (SPSC) in ephemeral reaches (where water flows only after rain event) and riffle weirs and buried grade control structures in the intermittent and perennial reaches (year round flow).

The design of the riffle weirs and floodplain grade control will allow for minimal impacts to existing resources in the floodplain The restoration of this site will re-create or enhance over 1,500 linear feet of stream and over five acres of forested wetland habitat that drains 169 acres of the surrounding area, of which nearly 85% is impervious.

This project, one of 30 high and medium priority projects listed in our 2008 Watershed Restoration Plan, is located within the Church Creek subwatershed of the South River and is part of our comprehensive Church Creek Initiative. This site is the "green remainder" of a much wider floodplain-wetland system that extended to nearby West Street and collected over 100 acres of forest runoff. The true headwaters (West Street to Riva Road) have been filled, and their drainage piped. The lateral areas of this reach have been filled on both the north bank (Home Depot) and south bank (Harbour Center) to allow space for retail development in the 1970s. Aris T. Allen Boulevard also now contributes flow from areas that should geographically be outside of the drainage shed. As a result, a scoured single-thread channel has developed where one did not exist historically.

This project will result in increased biological diversity of the channels and floodplain via consistent floodplain reconnection that provides yearlong recharge of floodplain soils. The restoration work will increase instream pool depth, which will expand fish habitat upstream without removing existing forest resources to reshape the channel. In addition, the varied size of substrate in the restored project (rock weirs, cobble riffles, fine sediment and organic substrate in the pools) will enhance macroinvertebrate habitat. The improved floodplain connection will also improve sediment trapping within the floodplain allowing cleaner and cooler water to enter Church Creek and the South River.

2017 BUBBA Second Place Winner for Best Stream Restoration

BEFORE: Conditions prior to restoration


AFTER: Volunteer plantings after project completion

St. Andrews (6)
St. Andrews (7)

Project Funded By:

DNRweb  WPRP logo CBT BayPlate Logogif 2010

Featured Projects

  • Annapolis Harbour Center Stream and Wetland Restoration

    The Annapolis Harbour Center Stream and Wetland project will improve habitat, increase floodplain connection, and prevent bed and bank erosion. This particular project focuses on controlling flows and providing habitat at the bottom of existing outfalls, through the use of a step-pool storm...

  • Church Creek Headwaters Restoration

    There are four primary tributaries feeding Church Creek, one of the most highly degraded sub-watersheds on the South River.  One of them, the Wilelinor Stream Valley was restored in 2003 by Anne Arundel County and the Maryland State Highway Administration using sand seepage stream and wetland...

  • Preserve at Broad Creek Pond and Outfall Restoration

    This project is located in the Broad Creek watershed, one of the most impaired subwatersheds of the South River.  The Preserve at Broad Creek Restoration Project corrected a failing stormwater pond and its resulting unstable outfall into an ephemeral reach of a tributary of Broad Creek known as...

Current Projects

  • Annapolis Harbour Center Pond Retrofit

    Anne Arundel County, with support from the South River Federation, is retrofitting the large stormwater pond at Annapolis Harbour Center to increase its capacity for treating stormwater runoff.  This new project will tie directly into the Federation's Annapolis Harbour Center Stream and Wetlands...

  • Bacon Ridge Natural Area

    Background: The Bacon Ridge Natural Area (BRNA) is a County owned Natural Area in Crownsville, MD. The area consists of over 700 acres of forests, streams, and wetlands, including portions of the Crownsville State Hospital property. The Federation strongly advocated for the permanent protection of new...

  • Beards Creek: Killarney House & Neighbors Community BMPs

    Killarney House Stream Restoration Project With "Live Green, Eat Irish" as their motto, a roof covered in solar panels, and a small farm out back, the Killarney House Irish restaurant is committed to being environmentally responsible. In 2015, Killarney House owner Anthony Clarke reached out to...

  • Broad Creek Park & Health Department Restoration

    This restoration project will restore stability and functions to a 750 and 950  linear feet ephemeral gullies that flow to the East Branch of Broad Creek. The two channels are highly unstable, leading to excessive delivery of sediment downstream during even minor storm events. By stabilizing the gullies...

  • Bywater Stream and Wetland Restoration

    The Bywater Branch Restoration Project is located in Annapolis next to the community of Kingsport. The roughly 2,000 linear foot site is in the headwaters of Church Creek, one of the most highly urbanized sub watersheds on the South River. The project site is currently composed of multiple...

  • Edgewater Beach Septic Upgrades & Stormwater Retrofits

    The Edgewater Beach Septic and Stormwater Retrofit project is a multi-phase effort to work with a decades-old, waterfront community on the South River. We seek to comprehensively upgrade its infrastructure to help reduce negative impacts to health and water quality, improve property values, and...

  • Living Shoreline Projects

    The South River Federation has worked with a number of communities on the River to replace bulkhead and revetment with natural “living shoreline” projects. These projects rely less on structural materials, such as rock and lumber, for stabilization, and instead work with the wave energy on the...

  • Turnbull Estates BMP & Living Shoreline Project

    South River Federation (SRF), in partnership Turnbull Estates community, Edgewater, MD, is seeking to couple a community bioretention project with an innovative living shoreline restoration approach, utilizing the native oyster Crassostrea virginica along with conventional methods (segmented sills)....

  • Warehouse Creek Stream and Wetland Restoration

    Coming Soon