Aquatic invasive plants management grants program

Invasive, non-native aquatic plants are a serious threat to the health of lakes, rivers, and streams in Washington State. Excessive invasive plant growth impairs fish and wildlife habitat and restricts recreational activities.

In 1991, the Washington Legislature established the Freshwater Aquatic Invasive Plant Management Program and Account to provide financial and technical support to tackle the problem on a statewide level. The account provides funding for technical assistance, public education, and grants to help control aquatic invasive plants. Account revenue comes from a $3 fee on the annual registration of boat trailers, which are the biggest vector of aquatic invasive species.You can learn about the types of projects this program has funded in the past on this page.

Visit our Water Quality Grants and Loans general resources page to find specific resources for managing your Aquatic Invasive Plants Grant funded project.

Funding cycle

  • Amount of funding available: Generally about $350,000 is available during each annual funding cycle.
  • Funding allocated:
  • Grant award limit: Limited to $30,000 (state share) for planning grants, $75,000 (state share) for other projects. Each public body is limited to $75,000 per annual grant cycle. Early infestation projects limit is $50,000 per project.
  • Amount of matching funds required: 25 percent local match. 12.5 percent for Early Infestation grants.

Applications are not being accepted at this time.

Start date: Oct 12, 2021
End date: Dec 16, 2021

Applications are started, completed, and submitted via Ecology's Administration of Grants and Loans (EAGL) system. Applications will be accepted until 5pm on the closing date.

Funding is available for the following entities:

Eligible public bodies:

  • State agencies
  • Counties, cities
  • Special purpose districts
  • Tribes

Eligible activities include, but may not be limited to, the following:

  • Development of integrated aquatic vegetation management plans.
  • Plant control activities.
  • Education/information projects.
  • Aquatic plant mapping and inventory.
  • Pilot and demonstration projects, evaluation of implementation effectiveness, and follow-up monitoring.

More information about this funding program

Grant applications will be accepted starting October 17, 2022, until December 1, 2022.


For the Fiscal Year 2023 funding cycle:

For the Fiscal Year 2021 funding cycle:

For the Fiscal Year 2019 funding cycle:

Past Grant Funded Projects and Applicants: