Noxious Weed Control Program

2010 Program update: Thank you to those who mailed back their 2010 permission forms. These forms will be valid for three years, allowing CWC contractors to access your property for the inventory and treatment of noxious weeds ONLY. This program is seperate from other council programs and particpation is completely voluntary. One *very important* reason for allowing our contractors permission to access your land: It makes the program more efficient and saves money! When our contractor has permission to access neighboring properties, he can continue to work his way up/downstream. If he doesn’t have landowner permission, he often has to exit the river, go around the property, and then get back in the river where he next has permission. If you misplaced or didn’t recieve a form, download one here and mail it to: Calapooia Watershed Council, PO Box 844, Brownsville, OR, 97327. Please note: only residents on the mainstem Calapooia River recieved forms. In future years, we plan to expand to specific tributaries. If you have concerns, live on a tributary with lots of weeds, or just want to learn more, please contact us.

One of the Calapooia Watershed Council’s highest priorities is to promote watershed health. The rapid expansion of weedy plant species threatens our goal, because these invasive plants can dominate and often cause permanent damage to natural plant communities. Acres of once healthy, productive forestlands and riparian areas have been overrun by noxious or invasive weeds. Damage to streamside habitats is particularly detrimental for salmon, which depend on shaded, winding streams with adequate food sources.

Weeds of Concern for the Calapooia Watershed Council
Knotweed    False Brome    Blackberry    English Ivy    Maps

Weed Working Group Notes:

January 2011

Invasive weeds:

  • Destroy wildlife habitat
  • Reduce opportunities for hunting, fishing, camping and other recreational activities
  • Displace many Threatened and Endangered Species
  • Reduce plant and animal diversity because of weed monocultures-single plat species that over run all others in an area
  • Disrupt waterfowl and neo-tropical migratory bird flight patterns and nesting habitats
  • Cost millions of dollars in treatment and loss of productivity to private land owners

What is a noxious weed?
The term “weed” means different things to different people.  In the broadest sense, it is any plant growing where it is not wanted.  Weeds can be native or non-native, invasive or non invasive, and noxious or not noxious.  Legally, a noxious weed is any plant designated by a Federal, State or county government as injurious to public health, agriculture, recreation, wildlife or property. (Sheley, Petroff, and Borman, 1999) A noxious weed is also commonly defined as a plant that grows out of place   (i.e., a rose can be a weed in a wheat field) and is “competitive, persistent, and pernicious.” (James, et al, 1991).

Are invasive plants the same as noxious weeds?
No.  Invasive plants include not only noxious weeds, but also other plants that are not native to this country.  Plants are considered invasive if they have been introduced into an environment where they did not evolve.  As a result, they usually have no natural enemies to limit their reproduction and spread (Westbrooks, 1998).  Some invasive plants can produce significant changes to vegetation, composition, structure, or ecosystem function. (Cronk and Fuller, 1995).
–Above content adapted from the Bureau of Land Management, including references cited therein.–

Calapooia Watershed Noxious Weed Control Program
The Calapooia Watershed Noxious Weed Control Program began in 2006 and focused on Japanese knotweed and Himalayan blackberry and is currently in the first stages of addressing English ivy and false brome in the upper watershed.

Each spring, the Council conducts outreach to landowners near infested areas.  The Council mails educational materials and recruits willing landowners to give the Council permission to inventory (survey) the type and amount of weeds present along their streamside property. Using grant funding from the USFS and BLM, the Council treats the weeds on participating landowners’ properties.

If you are interested in participating in the Calapooia Noxious Weed Control Program, by either providing your permission for our contractors to walk along the Calapooia River on your property, or you would like to discuss other options, please contact us.

Additional Resources: