Posts Tagged 'great swamp watershed association'

Restoration and Stewardship of the Great Swamp's Conservation Management Area

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Posted in biological diversity, ecological restoration project, projects funded by conservation resources, recreation & aethestics, water protection, filtration, & control

The Great Swamp Watershed Association‘s 50 acre Conservation Management Area (CMA) contains critical wetlands, vernal pools, forested areas, and the Silver Brook (a feeder stream to the Passaic River), and is home to several state and federally designated threatened species, including wood turtle and barred owl.

2009-10 Stewardship goals for the site are:

  • Continue restoration of the property to a diverse ecologically functioning state.  Restoration projects undertaken to date have included 15+ acres of invasive plant species control, 23 acre deer exclosure fencing, enhancement of vernal pool habitat, stream bank stabilization and replenishment, and improvement of habitat compromised by past excessive deer browsing.
  • Improve Public access for passive recreation.  1.5 miles of trails cross the site and are undergoing access improvements such as boardwalk construction over wet areas.
  • Increase use of the property as an educational and demonstration site for volunteer-led restoration efforts and as a site for academic study and fieldwork.

Ecosystem Services Provided:

Biological Diversity: habitat- protecting aquatic habitat, federal threatened/endangered species habitat protection; ecosystem restoration- invasive plant removal

Recreation and Aesthetics: Public access- hiking trails

Total Project Cost: $94,000

In 2009, CRI awarded the GSWA $4,000 for this project through its Franklin Parker Small Grants program.

Status: Restoration has been underway at the site since 1996, with a 23 acre deer fence installed in 2005.  Corporate and community volunteers have so far labored thousands of hours towards the restoration of this ecosystem.

If you would like further information about this project, contact Conservation Resources Inc.

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Penn's Brook Stabilization

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Posted in NRD settlement candidate project, ecological restoration project, water protection, filtration, & control

Penn’s Brook, the headwater reach of the Upper Passaic River that is the subject of this project, is defined by a starting point near Bernardsville High School and a point of termination where the stream flows under Childs Rd.  There are of a number of eroded segments along this reach that require immediate stabilization.  The most significantly unstable and eroded reach is located on the south side of the stream.  It appears that the source of this erosion is runoff from Rte 202 that is piped to a point at the top of the slope.  Over time this runoff has created a significant amount of erosion, actually cutting a 15 foot deep gully into the side of the slope.  It has been conservatively estimated that this erosion has generated at least 5,000 cubic yards of sediment loading to Penn’s Brook proper.

Additionally a number of other problems areas exist along this headwater reach.  Immediately down gradient of the high school property is an erosional channel apparently created by the discharge of runoff from the playing fields and an access road to school parking lots.  In this same area there is an adjacent stream segment that has been channelized with disturbed soils and felled trees along the stream’s banks.  Further downstream the main channel of Penn’s Brook is characterized by unstable, incised slopes, an unstable streambed, and areas of significant sediment deposition, riparian disturbance and colonization by various invasive species.

The Great Swamp Watershed Association (GSWA) will characterize the land use, land cover and related natural resource attributes of the study area, and develop GIS maps of the project area, and will locate major outfalls and map their associated stormwater collection system.  This will be accomplished by first reviewing engineering and storm sewer maps and records available through the engineering departments of Bernardsville Township. The land use/land cover data will aid the GSWA in identifying the general boundaries of wetlands and other NJDEP regulated lands as well as to characterize the soils, topography and surficial geology of the study area. The soils, topography and surficial geology information will aid in determining the causes of the stream’s problems and in the evaluation of various restoration options.

Next, the GSWA will conduct a detailed investigation of the hydrologic and hydraulic characteristics of the stream and then use this information along with data pertaining to stream stability, sediment transport and erosional properties to prepare site-specific restoration concepts.

Ecosystem Services Provided:

Water Protection, Filtration & Control: Water quality- protection of headwaters, stormwater project, erosion prevention, stream bank stabilization, preventing sedimentation.

Total Cost of Project: $54,,500 for these first phases of the project

Status: In the planning process

If you would like further information about this project, contact Conservation Resources Inc.

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