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Broad Dyke Watershed in Delaware

Broad Dyke Watershed

                   Broad Dyke Watershed

Watershed Description

Picture of Broad Dyke Marsh

                  Broad Dyke Marsh

Broad Dyke watershed is located to the north of Army Creek and south of Christina River.  It is highly urbanized and includes a number of smaller tributaries to the Delaware River besides the main Broad Dyke.

Watershed Area:  4,850 acres (1,963 hectares)

Location:  Northeastern New Castle County in northeastern Delaware.

Flow Direction:  East towards the Delaware River.

Characteristics:  Urban watershed in northern Delaware.

Major Vegetation Communities/Land Covers


Impervious surface and cultivated lawn cover almost all of the watershed, making for one of the most developed watersheds in Delaware.  Reed Tidal Marsh ranks #3.  Northeastern Modified Successional Forest is the largest forest and Northeastern Old Field ranks fifth.

Broad Dyke Watershed Vegetation Communities/Land Cover (Top 5 for 2007)
Vegetation Community/Land Cover Acres Hectares
Impervious Surface 1,898.00 768.00
Cultivated Lawn 1,894.00 766.00
Reed Tidal Marsh 225.00 91.00
Northeastern Modified Successional Forest 221.00 90.00
Northeastern Old Field 207.00 84.00

    *The table above is subject to change with more watershed mapping.

Managed Lands


  • Castle Hills Park
  • Rogers Manor Park
Links of Interest


Watershed Maps Available


One vegetation community/land cover map based on 2007 aerial imagery is available in .pdf format.  The map that is in the process of completion and is provided “as is” for informational purposes.  Email for shapefile requests.