Current Approved Aquatic Vegetation Treatment Proposals

Updated January 26, 2026

A Treatment Proposal must be submitted for review to TPWD, as well as local controlling entities, before vegetation management activities are conducted in public water. This page lists current treatment proposals that have been submitted and approved by Texas Parks and Wildlife Department. Note these are only proposals. Depending on weather, plant growth, and available funds, all of the acres proposed for treatment may not be treated.

Water BodyProposed DatePlant SpeciesProposed TreatmentAcres
TypeMethod
B. A. Steinhagen Lake1/1/26Giant salviniaBiological, ChemicalGlyphosate, Diquat, Metsulfuron methyl, Flumioxazin, Salvinia weevils2000 ac, 2000 ac, 2000 ac, 2000 ac, 500 ac
B. A. Steinhagen Lake1/1/26Water hyacinth; AlligatorweedBiological, ChemicalGlyphosate, Diquat, Imazpyr, 2,4-D; Alligatorweed flea beetles, Imazapyr1000 ac, 1000 ac, 1000 ac, 1000 ac; 200 ac, 1000 ac
Caddo Lake1/1/26Giant salvinia; Water hyacinthBiological, ChemicalSalvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Penoxsulam, Gluphosate, 2,4-D, CarfentrazoneUp to 50 ac, 13000 ac; 13000 ac
Lake O the Pines1/1/26Giant salviniaBiological, ChemicalGlyphosate, Diquat, Metsulfuron methyl, Flumioxazin, Salvinia weevils2000 ac, 2000 ac, 2000 ac, 2000 ac, 200 ac
Lake Palestine1/1/26Giant salviniaBiological, ChemicalSalvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone600 ac
Lake Timpson1/1/26Giant salviniaChemicalRoundup Custom8-15 ac
Sam Rayburn Reservoir1/1/26Giant salviniaBiological, ChemicalGlyphosate, Diquat, Metsulfuron methyl, Flumioxazin, Salvinia weevils2000 ac, 2000 ac, 2000 ac, 2000 ac, 500 ac
Sam Rayburn Reservoir1/1/26Water hyacinth; AlligatorweedBiological, ChemicalGlyphosate, Diquat, 2,4-D; Alligatorweed flea beetles1000 ac, 1000 ac, 1000 ac, 200 ac
Toledo Bend Reservoir1/1/26Giant salvinia; Water hyacinthBiological, ChemicalSalvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Penoxsulam, Glyphosate, 2,4-D, CarfentrazoneUp to 50 ac, 2500 ac; 2500 ac
Wright Patman Lake1/1/26Giant salviniaBiological, ChemicalGlyphosate, Diquat, Metsulfron methyl, Flumioxazin, Salvinia weevils250 ac, 250 ac, 250 ac, 250 ac, 100 ac
Bois D'Arc Reservoir1/12/26Giant salviniaMechanical, ChemicalFloating Containment Boom, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone50 ac, 50 ac
Springfield Lake1/12/26WatermealChemicalDiquat8 ac
Lake Athens1/23/26Giant salviniaMechanical, Biological, ChemicalFloating Containment Boom, Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone100 ac, 100 ac, 100 ac
Lake Houston1/26/26Water lettuce; Water hyacinth; Salvinia spp.ChemicalGlyphosate, Diquat, Flumioxazin, Imazapyr; Glyphosate, Diquat; Glyphosate, Flumioxazin, Diquat150 ac, 150 ac,150 ac, 150 ac; 150 ac, 150 ac; 50 ac, 50 ac
Ellison Creek Reservoir/Lake Lone Star1/28/26Hydrilla; Giant salviniaChemicalProcellaCOR SC, AquatStrike; Diquat, Glyphosate, Flumioxazin3 ac (12 ac-ft); 100 ac
Lake Conroe1/28/26Giant salvinia; Water hyacinth; Crested floating heartBiological,ChemicalSalvinia weevils, Diquat, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Glyphosate, ProcellaCOR SC; ProcellaCOR SC100 ac, 1000 ac; 1000 ac; 250 ac
Lake Raven1/28/26Giant salvinia; Water hyacinth; HydrillaBiological, ChemicalSalvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Penoxsulam, Glyphosate, 2,4-D, Carfentrazone; ProcellaCOR SC, Aquathol KVaries, 60 ac; 60 ac; 50 ac
Gibbons Creek1/30/26HydrillaChemicalProcellaCOR SC84.6 ac-ft (13 ac)
Tony Houseman/Blue Elbow Swamp WMA1/30/26Giant salviniaChemicalGlyphosate, Flumioxazin, Penoxsulam, Diquat, Metsulfuron methyl
Houston County Reservoir2/4/26Giant salvinia; Water hyacinthChemicalDiquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Penoxsulam, Glyphosate, 2,4-D, Carfentrazone30 ac, 30 ac, 30 ac, 30 ac, 30 ac; 30 ac, 30 ac, 30 ac, 30 ac, 30 ac
Sheldon Reservoir2/4/26Giant salvinia; Water hyacinthBiological; ChemicalSalvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone; Diquat, Penoxsulam, Glyphosate, 2,4-D, CarfentrazoneVaries, 400 ac, 400 ac, 400 ac, 400 ac, 400 ac; 400 ac, 400 ac, 400 ac, 400 ac, 400 ac
Alcoa Evaporation Lake/Cox Creek2/15/26AlligatorweedChemicalClipper (Flumioxazin), Imazamox77 ac, 77 ac

Herbicide Labels & Safety Data Sheets

National Pesticide Information Center: Label and SDS Databases — list of searchable databases where you can find product labels and Safety Data Sheets (SDS) for herbicides mentioned in treatment proposals

Texas Lake Finder

Follow these links for information about public water bodies mentioned above: