Living with Wildlife

Our watershed is home to an amazing array of plant and wildlife species. From birds to beavers they all call this place home. Portland Audubon Society also has tips on Living with Urban Wildlife and how to reduce wildlife hazards and conflicts in your backyard. If wildlife activity on your property is creating a health or safety threat, you can contact USDA Wildlife Services at 503.326.2346 and leave a detailed message for assistance. Concerned about rising water? Visit our flood facts page. 

Problem: Nutria Beneficial: Beaver Problem: Invasive Plants

Nutria are an invasive, non-native species that we may have trapped if they are damaging stream enhancement projects, water quality facilities or drainage systems. For questions about non-native, invasive species, please view our Integrated Pest Management Plan (PDF, 3.17MB).





Because beavers are a native and beneficial species, we do not disturb them unless their activity is flooding a structure or damaging the public drainage system. Get information about living with beaver from Oregon Department of Fish & Wildlife. If you observe beavers causing this type of activity, please report it to our Field Operations staff at 503.547.8100.



Do you need information about nuisance species such as Japanese knotweed and English Ivy? View our Invasive Plant Handout (PDF, 1.4MB) and learn more about invasive plants from Tualatin Soil and Water Conservation District. Interested in learning about how CWS handles invasive species? Explore our Integrated Pest Management Plan (PDF, 2MB) and Herbicide Fact Sheet (PDF, 3MB).


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