figure 1. five parks and boat launch areas along the columbia river in richland washington
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Columbia RiverIntegrated Aquatic Vegetation Management Planfor the City of Richland, Washington
Dr. Steven O. LinkWashington State University Tri-Cities CampusSchool of Biological Sciences2710 University DriveRichland, WA [email protected]
December 2007
Figure 1. Five parks and boat launch areas along the
Columbia River in Richland Washington.
Jim Keck 4401 Everett, West Richland, 967-2208, [email protected]
Bill Fredrickson, Franklin County Weed Board, 545-3847
Lynn & Bev Koehlor, Owners of Columbia Park marina, 1601 Columbia Park Trail, Suite 103, Richland, 528-4580
Rachel Little, 415 Wine Country Rd., Prosser, 99350, 509-832-1329
*Keith Woods, 2020 Harris Ave.,Richland, WA 946-8678
*Gene Van Liew, 1425 Goethals Dr., Richland 946-7738
Tim Arntzen, Owner of Columbia River Journey's, PO Box 26 Richland
628-0657
Fabric
Method ComparisonsMethod $ Cost $ Permit Duration/Success Rate
Bottom Barrier 0.22-1.25/sq. ft. Yes (HPA-WDFW)Depends on growth & sediment rates max 1
year, cover < 50% of area
Cutting Yes (Illegal in Wa.)
Harvesting 750/acre Yes (HPA-WDFW) 30 – 60 Days
Mechanical 1000/hour Yes (HPA-WDFW) temporary, repeat 2-3/season
Hand-Pulling 500 – 2400/day Yes (HPA-WDFW)More than 1 season if complete removal of
plant and roots
Rotovation 300 - 600/acre
Yes (HPA/DOE/Cty Planning/WDNR) 2+ seasons
Chemical 200 - 2,000/acre Yes (EPA/St.Agric) Typically one season, closed system
Biological (carp) 10/fish 10+/acre Yes (WDFW)2-3 years for noticeable results, restock
every 5-10 years
Aquatic Plant Control Alternatives
Aquatic HerbicidesManual MethodsDiver DredgingBottom Screens
Biological ControlRotovation, Harvesting, and Cutting
Physical Methods
Hand-pulling/cutting/Bottom barrier application/Water-level drawdownWatershed controls/Water column dyes
Mechanical Methods
Harvesting and cutting/Bottom tillage (rotovation)/Diver-operated dredging
Biological Methods
Grass Carp/Biological control/Ecological Restoration
Chemical Methods
Fluridone/Glyphosate /Endothall / Copper compounds
Park Site acres Square feet
Leslie Groves Boat launch 0.4 17424Beach 0.42 18295.2Fishing dock 0.04 1742.4
Howard Amon Boat launch 0.6 26136Swim dock 0.11 4791.6Beach ?
Columbia Pt Boat launch 2.25 98010
Mudflats Boat launch 0.11 4791.6
Columbia West Boat launch 0.35 15246
4.28 186436.8
Strategy Price ($)Bottom Barrier 0.22-1.25/sq. ft. 233,046Cutting 5000Raking 5000Harvesting 750/acre 3210 Mechanical 1000/hour 5000 Hand-Pulling 500 – 240 0/day 12000Rotovation 300 - 600 /acre 2568Chemical 200 - 2 ,000/acre 8560ConcreteIncrease flowDeepen