Deer Creek Marsh WMA

About This Priority Conservation Area

Deer Creek Marsh Wildlife Management Area (WMA), totaling 1,771 acres, is located in the northwest corner of Oswego County along the shore of Lake Ontario. Deer Creek Marsh WMA is a combination of wetland types that include open cattails and a bog. The dominant feature, is an extensive barrier beach and sand dune system that separates and protects the marshland from the ravages of Lake Ontario. 

Confirmed Invasive Species Observations

Confirmed observations of SLELO’s tiered invasive species at Deer Creek Marsh WMA PCA. For more information, visit iMapInvasives


Tier List Species Recorded at This PCA

The invasive species tiers guide management priorities in New York State and are utilized by the Partnership for Regional Invasive Species Management or PRISM network. The species in each tier are categorized by their distribution, abundance, and available management options, and may vary depending on the region. The species listed below are the species categorized in the SLELO PRISM region. View a full list of tiered species in the SLELO PRISM.  Learn about New York State Invasive Species Tiers and view a Story-Map

Tier 1 Species

Early Detection/Prevention 

The management approach is early detection & prevention. Species are not known to be in the SLELO region but are within 100 miles and an introduction pathway exists. 

Species Recorded at This PCA

No tier 1 species are found at this PCA at this time. 

Tier 2 Species


Management approach is eradication. Species are known to be present in the SLELO region but are in low abundance with suitable treatment methods available to make eradication feasible with Priority Conservation Areas. 

Species Recorded at This PCA

No tier 2 species are found at this PCA at this time. 

Tier 3 Species


The management approach is containment/exclusion. Species are too widespread for eradication from the region, but some areas remain unaffected. Targeted management can be used to suppress the population within Priority Conservation Areas. 

Species Recorded at This PCA
  • Common buckthorn
  • Glossy buckthorn
  • Pale swallow-wort

Tier 4 Species

Suppression/Local Control

The management approach is suppression/local control. Species are present and widespread throughout the region with no chance of eradication. Localized management is applied to protect high-priority resources like rare plant habitats or recreation areas. 

Species Recorded at This PCA
  • Honeysuckle spp.   
  • Japanese knotweed                  

Tier 5 Species


The management approach is to monitor. Species may or may not be in the region but are difficult to respond to or require more knowledge of distribution, and management options. 

Species Recorded at This PCA

No tier 5 species are found at this PCA at this time. 

Species Recorded at this PCA that are not listed in SLELO PRISM's Tiers

  • Black locust
  • Climbing nightshade
  • Dame’s rocket
  • Eastern helleborine
  • Garlic mustard
  • Japanese barberry
  • Multiflora rose
  • Tufted vetch

PCA Evaluations (Score Cards)

Field Reports

Treatment Reports

Images From The Field