Treat a giant salvinia mat on Caddo Lake near the state park, zone 3, Caddo Lake State Park (Texas Parks and Wildlife Department, public state park), 245 Park Rd 2, Karnack, TX 75661, Harrison County (2026-08-04)

The survey above found an established giant salvinia mat near Caddo Lake State Park, and licensed in water treatment would otherwise leave this zone choking sunlight and oxygen from the water below another season. Standard: Texas Parks and Wildlife Department aquatic invasive species management guidance for giant salvinia (Salvinia molesta) at Caddo Lake, a Ramsar Wetland of International Importance, EPA-registered contact herbicide (diquat) label plus TPWD biocontrol weevil program, applied here to Caddo Lake State Park, Karnack, TX, Harrison County. SDG 6.6 and 15.8. Proof: permit or plan confirm plus before after photos plus treated area and product record plus GPS Method (Texas Parks and Wildlife Department aquatic invasive species management guidance for giant salvinia (Salvinia molesta) at Caddo Lake, a Ramsar Wetland of International Importance, EPA-registered contact herbicide (diquat) label plus TPWD biocontrol weevil program, applied here to Caddo Lake State Park, Karnack, TX, Harrison County. SDG 6.6 and 15.8.): 1. 1. Confirm the treatment plan and any required permit with the TPWD coordinating biologist or park staff, and photograph the mat before starting from the same shore vantage used in the survey. 2. 2. From a boat, operated only by a credentialed crew member, apply the EPA registered contact herbicide per label and TPWD protocol, or mechanically harvest matted salvinia, staying within the marked treatment zone. 3. 3. Track and record the treated area and the product or method used as the boat moves through the marked zone. 4. 4. Photograph the treated area from the matching shore vantage after treatment and record the follow up monitoring date. Done when: Confirmation the treatment plan or permit was coordinated with TPWD or park staff; Before photo of the mat from the shore vantage; Product used (EPA registered contact herbicide) or mechanical method recorded; Treated area recorded; After photo of the treated zone from the matching vantage

Where

Caddo Lake State Park (Texas Parks and Wildlife Department, public state park), 245 Park Rd 2, Karnack, TX 75661, Harrison County

Pay

$220 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash. You see which before you claim, never after.

Proof

permit or plan confirm plus before after photos plus treated area and product record plus GPS

This is exactly what gets it approved. Nothing settles without it.

Level

advanced

Open until

2026-11-03

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 45–90 minutes. Method of record: EPA National Wetland Condition Assessment (rapid method)

Bring

• GPS phone
• quadrat frame
• invasive-species ID reference
• boots
• insect protection
• camera

Steps

1. 1. Navigate to the wetland edge; record GPS; stay on stable ground.
2. 2. Photograph 3 quadrat stations.
3. 3. At each station, estimate percent cover native vs invasive; identify the dominant invasive.
4. 4. Note hydrology / water level and any disturbance.
5. 5. Enter cover percentages, invasive ID, hydrology, GPS, photos into the proof record; sign.

If it does not match the plan

• Standing water + wildlife (snakes/alligators) -> maintain distance; never sample alone.
• High invasive cover -> flag for a management/removal plan.

What counts as done

• Confirmation the treatment plan or permit was coordinated with TPWD or park staff
• Before photo of the mat from the shore vantage
• Product used (EPA registered contact herbicide) or mechanical method recorded
• Treated area recorded
• After photo of the treated zone from the matching vantage

Proof is measured against these, not judged by taste.

The standard this serves

Wetland Condition. Wetlands are the landscape's kidneys and nurseries at once: they filter the water, absorb the flood, and raise the young of half the creatures around them. The EPA's rapid assessment gives a trained visitor a way to grade one honestly: the plants present, the water's path, the soil, the wear at the edges. Mastery looks like walking a marsh and knowing, defensibly, how it is doing and what threatens it. This packet is one such visit, one wetland's condition recorded to the method. What is watched can be defended; unwatched wetlands quietly disappear.