Publication Summary

The objectives of the Aquatic Plant Technical Assistance Program are to (1) provide advice on aquatic plant identification, biology, and management to government agencies and the public, (2) document aquatic plant distribution and habitat through site visits, and (3) assist with evaluating projects supported by Freshwater Aquatic Weed Program grant money

During the 2000 field season, aquatic plant data were gathered at 44 different waterbodies located throughout the state.

The objectives of the Aquatic Plant Technical Assistance Program are to (1) provide advice on aquatic plant identification, biology, and management to government agencies and the public, (2) document aquatic plant distribution and habitat through site visits, and (3) assist with evaluating projects supported by Freshwater Aquatic Weed Program grant money

During the 2000 field season, aquatic plant data were gathered at 44 different waterbodies located throughout the state. Several previously unknown populations of non-native invasive aquatic plants were recorded. Myriophyllum spicatum (Eurasian watermilfoil) was found in Tapps Lake, Pierce County and in Lake Sutherland, Clallam County. Lythrum salicaria (purple loosestrife) was previously unknown from Windmill Lake in Grant County. Typha angustifolia (narrow leaf cat-tail) was discovered in Kapowsin Lake, Pierce County. Also, one location of M. spicatum was reported by an aquatic plant control consultant in the part of Silver Lake, Spokane County that is north of Medical Lake Road. In addition to routine aquatic plant monitoring, a special project investigating the impact of low levels of the contact herbicide endothall was conducted on Kress Lake in Cowlitz County.

Other accomplishments for this project during 2000 include the following: gathered plants for the herbarium collection, provided educational and technical outreach to private and public entities, and assisted with projects funded by Freshwater Aquatic Weed Program grant money.