Rutgers New Jersey Agricultural Experiment Station | [Cooperative Extension of Morris County]

Troy Brook Project

The Troy Brook watershed located in Morris County is within the larger Whippany River Watershed, which then discharges to the Passaic River.  The Troy Brook watershed is approximately 16 mi2, with 24 miles of river and more than 400 acres of lakes, including Lake Parsippany and Mountain Lake. For more information about these projects, or how you can get involved please contact Pat Rector at or by phone at 973-285-8300 x225

Background Information- Click here for information on why the Troy Brook Project was started and what the acutal mangament plan is.

Implementation of the Troy Brook Plan- Current Projects

Porous Asphalt


Cluster Rain Garden Project- took place in The Hills of Troy Neighborhood

  • Power Point - Step-by-Step description of project
  • Rain Garden maintenance Manuals Maintenance manuals were developed specific to the project. Manuasl are available at this link.
  • Cluster Rain Garden Poster-For more detailed information about this project, please see the poster that was presented at the National Land and Sea Grant Conference in Washington, DC in 2011.


Parisppany Troy Hills- Municipal Efforts

At the Parsippany-Troy Hills Municipal Building two rain gardens were installed in September 2009. Volunteers from the community and the Whippany River Watershed Action Committee were trained on rain gardens and how they help address stormwater problems.

At the Parsippany-Troy Hills Department of Public Works Yard Turfstone pavers were installed on an emergency road.  The road previously allowed stormwater to flow directly to the Troy Brook. Turfstone pavers are interlocking pavers that are placed on roads or parking areas that do not receive heavy traffic.  The pavers allow grass to grow between them, decreasing the amount of runoff from the area.

Emergency Access Road prior (left) and after (right) to

Installation of Turfstone Pavers.

Photo Pat Rector, September 2009.

Installation of Turfstone Pavers.

Photo Pat Rector, September 2009.

Also installed at the Department of Public Works is a 2,000 ft2 bioswale that treats 1.6 acres of parking lot during the 10-year storm (5.23 inches for Morris County) along with some rooftop runoff and washwater from vehicle washing.

Installing jute fabric to provide structure for small plants

placed in channel. Picture Pat Rector, Rutgers Cooperative Extension May 2011.

Checkdam placed to help slow velocity of

water in the channel. Two checkdams were

installed in the channel. Photo Pat Rector May 2011.

Dr. Chris Obropta hand places rip rap stones.

Photo Pat Rector May 2011.

Testing 1,2,3. Storm event during

construction. Photo Greg Schneider,

Parsippany-troy Hills Department of

Public Works. May 2011.

Bioswale in July of 2011. Photo Pat Rector.


Normandy Office Complex

Normandy Parking Lot Project- Powerpoint of the project

At the Normandy Property office complex on Cherry Hill Road a portions of the upper parking lot were fitted with pervious pavement to allow for more ground water infiltration and disconnection of stormwater. Porous pavement is a permeable pavement surface with gravel underneath.  The gravel temporarily stores stormwater runoff prior to infiltration into the soil. By only using porous pavement on select portions of the parking lot it allowed drainage of the parking lot without the cost of retrofitting the entire parking lot. For more information about this program or for ways your company can improve its drainage contact Pat Rector at

Tivoli Garden Complex-

Rain Gardens were installed at The Tivoli Garden Apartment Complex, Parsippany-Troy Hills, Morris County, NJ in the summer of 2011. The Troy Brook is running just behind the row of cars parked in the picture below.

Placement of garden boxes to prevent erosion and capture stormwater runoff. Photo courtesy Pat Rector, October 2011.

Rain Gardens capturing roof runoff from a garden apartment complex. Photo

Pat Rector, Rutgers Cooperative Extension Environmental and Resource

Management Agent Morris/Somerset Counties. October 2011.