Algae Management Plans
These plans resulted from Freshwater Algae Management Grants provided to local communities with lakes experiencing persistent blue-green algae blooms.
MORE INFORMATION:
Freshwater Algae Control Program
Plant Monitoring Data
Statewide freshwater aquatic plant monitoring data from 1994 to present. Data from each field season are updated in the fall. The program’s main objective is to monitor invasive non-native plants, but all species observed are included. Data are mainly from lakes and rivers with public boat access; waterbodies are not sampled randomly.
MORE INFORMATION:
Aquatic Plant Monitoring Page Aquatic Plant Quality Assurance Project Plan
Aquatic Weed Management Fund grants awarded
The Aquatic Weed Management Fund Grant Program is administered by the Department of Ecology to provide money for freshwater invasive aquatic weed projects. Grant projects must address prevention and/or control of freshwater, invasive, non-native aquatic plants. The types of activities funded include: Planning, education, monitoring, implementation, pilot/demonstration projects, surveillance and mapping projects.
MORE INFORMATION:
Aquatic Weed Management Grants
Freshwater Algae Management Grants
The Freshwater Algae Program provides funding to manage or control algae in water bodies that have had toxic algae blooms within the last three years. The amount of money available for this program is not enough to fund comprehensive nutrient reduction projects necessary for long-term algae control. Instead, the program focuses on providing local governments with the tools they need to manage algae problems. The program targets blue-green algae (cyanobacteria) because these algae pose a health risk to humans, pets, and livestock.
MORE INFORMATION:
Grants for Freshwater Algae Management
Freshwater Toxic Algae Data
The Washington Department of Ecology offers a freshwater algal identification and toxicity-testing service for Washington State residents and County Health Districts in Washington State. This service identifies blue-green algae (cyanobacteria) blooms and is not meant for routine lake phytoplankton assessment. Samples are analyzed by the King County Environmental Lab; this link directs you to results from your selected lake in their database.
MORE INFORMATION:
Freshwater Algae Control Program
Aquatic herbicide use data
Data gathered from annual reports required by the Aquatic Plant and Algae Management General Permit that summarize the amount of active ingredient used for treatment of aquatic plants in the water body during the year. An active ingredient is the chemical in a herbicide product that produces the intended effect (e.g. plant destruction).
MORE INFORMATION:
Not currently available online through other sources.
Water Quality Monitoring Reports
Ecology monitored lake water quality in selected lakes from 1989 to 1999. More recently, Ecology has collected data for EPA’s National Lakes Survey every 5 years starting in 2007. Links to published reports that include this lake are provided.
MORE INFORMATION:
Lake Water Quality Page
Aquatic herbicide monitoring reports
Monitoring data gathered by various parties working with Ecology to document the concentrations of herbicide active ingredients in water bodies that are treated.
MORE INFORMATION:
Aquatic herbicide freshwater monitoring data
Fisheries management
The Washington Department of Fish and Wildlife (WDFW) is charged with the dual roles of protecting natives species, while at the same time, providing for public use and enjoyment of fish and wildlife under its jurisdiction. The WDFW’s Inland Fish Program reflects both aspects of the agency’s mission and is deeply vested in managing inland fishing opportunities. In some cases, achievement of management objectives depends on the removal of fish species that directly compete with or prey upon stocked fish that are the primary management concern. In other cases, lake rehabilitations may be used for the protection of native species or the restoration of habitat, for a variety of both fish and wildlife species.
MORE INFORMATION:
Fisheries Management NPDES Permit Page
Vegetation Management Plans
In waterbodies with well-established populations of non-native, invasive aquatic plants, the development of an integrated aquatic plant management plan is required before grants can be awarded for implementation (control projects). Grants are also available for plan development.
MORE INFORMATION:
Planning for Aquatic Plant Management
Fishing Information from WDFW
Links to the Fish Washington page for this lake on the Washington Department of Fish and Wildlife website.
MORE INFORMATION:
Fish Washington
Water Quality Data
Water quality data from Ecology’s Environmental Information Management (EIM) database. These data are from either the (now defunct) lake water quality monitoring program or data collected along with the aquatic plant monitoring program. Additional data may be available by clicking on the ‘details’ link. Data from other projects may be available by searching EIM directly through the link at the bottom of this page.
MORE INFORMATION:
Lake water quality
Current aquatic herbicide use data
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Not currently available online through other sources.
Upcoming aquatic herbicide use data
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Not currently available online through other sources.
Assessed Waters - Listed Impairments
Provides a list of impairments from the current Water Quality Assessment for the selected lake. There are 5 categories. The assessment represents the Integrated Report for Sections 303(d) and 305(b) of the Clean Water Act.
MORE INFORMATION:
Water quality assessment categories
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For lake information, enter a waterbody name in the textbox or click on a lake in the map.
Washington state lake data includes: aquatic plants, toxic algae, herbicide use, fish management, grants and loans, etc.

For fishing information, visit Fish Washington.
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Proposed treatmets
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Permit Number Target Chemical Used Date
Actual treatments
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Permit Number Target Chemical Used Date
Aquatic and shoreline plants
Plant monitoring data
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Scientific Name Common Name Date DV Comment
eradicated species
noxious weed

Grant funding data
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Applicant Name Project Title Year Fund Amount
Vegetation management plans
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Blue-green algae (cyanobacteria)
Toxic algae data
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Grant funding data
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Applicant Name Project Title Year Fund Amount
Algae management plans
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Aquatic herbicides
Use data
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Permit Number Target Chemical Used Amount Year
Monitoring reports
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Water quality
Assessed Waters
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Fisheries
Fishing information
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Project reports
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