Current Approved Aquatic Vegetation Treatment Proposals

Updated January 30, 2023

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.

Return to Nuisance Aquatic Vegetation page

Water Body	Proposed Date	Plant Species	Proposed Treatment		Acres
			Type	Method
San Marcos River	1/2/23	Hydrilla verticillata, Ceratopteris thalictroides, Nasturtium officinale, Eichornia crassipes, Pistia stratiotes, Hygrophila polysperma, Limnophila sessiflora	Mechanical	Physical removal, Physical removal, Physical removal, Physical removal, Physical removal, Physical removal	2.37 ac, 0.08 ac, 1.7 ac, 0.22 ac, 0.22 ac, 2.37 ac, 0.22 ac
Lake Timpson	1/1/23	Giant salvinia	Chemical	RoundUp Custom	8-15 ac
Lake Palestine	1/1/23	Giant salvinia	Chemical	Diquat, Penoxsulam, Fllumioxazin, Glyphosate, Pro MSM 60, Carfentrazone	600 ac, 600 ac, 600 ac, 600 ac, 600 ac, 600 ac
Caddo Lake	1/1/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	Up to 50 ac, 13,000 ac, 500 ac
Toldeo Bend	1/1/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrozone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	500 ac, 6000 ac, 200 ac
Taylor Bayou	1/1/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	100 ac, 600 ac, 600 ac
Hillebrandt Bayou	1/1/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	100 ac, 600 ac, 600 ac
Big Hill Bayou	1/1/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	100 ac, 600 ac, 600 ac
Adams Bayou	1/1/23	Salvinia spp., Water hyacinth	Chemical	Diquat, Penoxsulam, Flumioxazin, Glyphosate, Pro MSM 60, Carfentrazone, Diquat, Penoxsulam, Flumioxazin, Glyohosate, 2,4-D, Carfentrazone	100 ac, 100 ac
Cow Bayou	1/1/23	Salvinia spp., Water hyacinth	Chemical	Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	120 ac, 100 ac
Kurth Lake	1/1/23	Common salvinia	Chemical	Flumioxazin, Carfentrazone, Diquat, Penoxsulam, Glyphosate, Pro MSM 60	5 ac
Lake Nacogdoches	1/1/23	Giant salvinia	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60	50 ac
Martin Creek Lake	1/1/23	Giant salvinia	Chemical	Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60	20 ac
B. A. Steinhagen Lake	1/16/23	Giant salvinia	Biological, Chemical	Glyphosate, Diquat, Metsulfuron Methyl, Flumioxazin, Salvinia weevils	2000 ac, 500 ac
B. A. Steinhagen Lake	1/16/23	Water hyacinth, Alligatorweed	Biological, Chemical	Glyphosate, Diquat, Flumioxazin, Flea beetles	1000 ac, 200 ac
Lake O the Pines	1/16/23	Giant salvinia	Biological, Chemical	Glyphosate, Diquat, Metsulfuron Methyl, Flumioxazin, Salvinia weevils	2000 ac, 200 ac
Sam Rayburn	1/9/23	Water hyacinth, Alligatorweed	Biological, Chemical	Glyphosate, Diquat, Flumioxazin, Flea beetles	1000 ac, 200 ac
Sam Rayburn	1/9/23	Giant salvinia	Biological, Chemical	Glyphosate, Diquat, Metsulfuron Methyl, Flumioxazin	2000 ac, 500 ac
Ascarate Lake	2/1/23	Marine Naiad	Mechanical	Mechanical Cutting	35 ac
Lake Raven	1/26/23	Giant salvinia, Water hyacinth	Biological, Chemical	Salvinia weevils, Diquat, Penoxsulam, Flumioxazin, Glyphosate, Carfentrazone, Pro MSM 60, Diquat, Penoxsulam, Flumioxazin, Glyphosate, 2,4-D, Carfentrazone	1-50 ac, 60 ac, 60 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:

• Texas Freshwater Lakes (list of more than 150 reservoirs)
• Community Fishing Lakes (small local lakes)