Beaumont, TX & Southeast Texas
Before a tract in Southeast Texas gets cleared, somebody has to know what is under the brush. We fly aerial LiDAR scanning and drone mapping over overgrown land across Jefferson, Orange, Hardin, Liberty and Chambers counties, and hand the data to the surveyors, engineers and developers planning the work. Then we can clear the same ground and fly it again, so the before and after come from one crew.
Drone Mapping & Aerial LiDAR
Most undeveloped land in the Golden Triangle hides its terrain. Yaupon, Chinese tallow, privet and pine regrowth close a tract so thoroughly that nobody can see where the ground falls, where the old ditches run or where the low spots hold water after a rain. A ground crew working that tract has to cut sight lines before it can take a single shot, and in the thick stuff along Pine Island Bayou or Village Creek that can take days before any real measuring starts.
Aerial LiDAR gets around the brush instead of through it. The scanner sends out hundreds of thousands of laser pulses a second, and each pulse can return several times as it hits leaves, branches and finally the ground. Filter out everything that is not ground and what is left is a bare-earth terrain model of the tract as if the vegetation were not there. On a few hundred acres of Big Thicket country that is a flight measured in hours, not a crew measured in weeks.
How It Works
It starts with the question, not the aircraft. A drainage study, a pad layout, a volume check on a stockpile and a storm damage record each need different flight heights, overlap and ground control, so we agree what the data is for and who is going to use it before planning a flight.
We check the airspace. Jack Brooks Regional near Nederland sits in controlled airspace, so do other fields around the region, and refineries, substations, the Port of Beaumont and pipeline facilities along the Neches and Sabine carry their own rules under Texas law. Where authorization is needed we get it first. After a hurricane, when temporary flight restrictions go up, flights inside them are coordinated through the FAA emergency process and the incident command, never flown on assumption.
We get written permission from the landowner, and we note any neighboring parcels the flight lines will cross. Thermal imagery counts as an image under Texas drone law, so consent is part of the job rather than a formality.
Ground control goes in next. An RTK base station and surveyed checkpoints tie the data to real coordinates, and where the deliverable feeds a surveyor or engineer, their control is the control we use.
Then we fly. LiDAR missions run low and steady over the tract with the scanner set for maximum returns under canopy. Thermal work runs early morning or at night when the temperature contrast is strongest.
Processing turns the flight into something usable: a classified point cloud, a bare-earth terrain model, contours, an orthomosaic image, cut and fill or stockpile volumes, or a thermal report. Deliverables go to you or directly to your surveyor or engineer in the formats their software reads.
The Equipment
We fly two aircraft, and which one goes up depends on where the job is.
On private land, development tracts and survey support we fly a DJI Matrice 400 carrying a DJI Zenmuse L3 LiDAR scanner. The L3 records up to 16 returns per laser pulse, which is the number that matters under Southeast Texas second-growth: yaupon, tallow and privet thick enough that a ground crew has to cut sight lines before it can shoot anything. More returns per pulse means more of them reach the dirt instead of mapping the top of the brush and calling it terrain. Its 100 MP mapping camera flies in the same pass, so the terrain model and the true-color imagery line up. For thermal on that aircraft we fly a DJI Zenmuse H30T: a 1280 x 1024 thermal sensor, a 34x zoom camera and a laser rangefinder, for storm damage, solar arrays, searches and anything running hot that looks fine from the ground.
On refineries, port facilities, utility corridors and public agency work we fly a Freefly Astro Max, designed and assembled in the USA, NDAA compliant and DIU Blue approved. Those sites increasingly require Blue UAS hardware by contract, and DJI does not qualify, so the Astro Max is what gets us through the gate. Its thermal and inspection payload is a Gremsy VIO F1, a dual EO/IR payload with a 640 x 512 thermal sensor, a 4K zoom camera and a laser rangefinder, for transmission line and connection inspection and energy infrastructure. Its LiDAR payload is still being settled with the manufacturer, on the same test: ground points under closed canopy, not open-field accuracy.
A DJI D-RTK 3 base station on the DJI side, a Freefly RTK ground station on the Astro Max, and GNSS checkpoints tie both aircraft's data to real coordinates.
One honest limit that will not change: LiDAR does not see through water. We map shorelines, pond banks, ditches and wet ground at the surface. A depth survey of a pond or bayou bottom needs a boat and sonar, and we will tell you so rather than sell you the wrong tool.
Aircraft
Flown for: Canopy mapping, thermal and storm flights on private and development land
Aerial LiDAR scanner
Flown for: Terrain under dense brush: bare earth, contours, drainage and volumes
Thermal, zoom and rangefinder
Flown for: Storm damage, wet roofs, night search and hot spots, with zoom to read detail
Base station and GNSS rover
Flown for: Ties every DJI flight to real, checkable coordinates
Aircraft. NDAA compliant, DIU Blue approved, designed and assembled in the USA.
Flown for: Refinery, port, utility and public agency sites that require Blue UAS hardware
Thermal and zoom inspection payload. NDAA compliant.
Flown for: Power line and connection inspection, substations and energy infrastructure
Specifications are the manufacturer's published figures under the manufacturer's test conditions, from enterprise.dji.com, store.freeflysystems.com and gremsy.com, checked September 2026. Flight times carry their conditions on purpose: the Astro Max's 43 minutes is the bare aircraft, and a heavy sensor cuts it to 20. The Astro Max LiDAR payload is not listed because it is not settled; its figures go up when it is. Accuracy on a real job depends on canopy, ground control, weather and flight plan, and what we deliver is mapping data, not a survey. DJI, Matrice and Zenmuse are trademarks of SZ DJI Technology Co., Ltd.; Freefly and Astro are trademarks of Freefly Systems; Gremsy and VIO are trademarks of Gremsy. TRP Land Clearing & Excavation is not affiliated with or endorsed by any of them.
Why TRP
From thicket to subdivision
LiDAR is not a separate service bolted onto land clearing. It is how a wooded tract becomes a property you can sell lots on: the scan feeds the design, the design drives the clearing, and you see the finished layout before the first tree comes down.
What most raw land here looks like: pine regrowth, yaupon and tallow so thick nobody can see the ground, let alone where the water goes.
One flight takes the trees off. The bare-earth model shows the ridge, every drainage channel and the low ground, with no sight lines cut.
Contours go to the surveyor and engineer. Roads and lots go on the high ground, drainage follows the channels, detention sits at the natural low.
The proposed layout drawn over your own aerial. Owners, buyers and lenders see the finished property before a machine moves.
We clear, mulch and grade exactly what the plan calls for. The greenbelt stays standing, and nothing gets cleared twice.
A second flight checks grades and measures what was moved against the design, so the before and after come from one crew.
Real ground, illustrative plan: a wooded tract near Lumberton, Hardin County, from USGS 3DEP LiDAR and NAIP aerial imagery (public domain), rendered by TRP. The subdivision layout is drawn to show the method. It is not a real plan and not a TRP project. Surveys and engineering are prepared and sealed by licensed professionals.
How LiDAR works
LiDAR is a laser scanner. From the drone it fires hundreds of thousands of pulses a second at the ground and times how long each one takes to come back. Over open ground every pulse comes straight back. Over brush and timber, most pulses hit leaves first, but some slip through the gaps, hit branches, and a share reach the ground. The scanner records each of those returns separately.
Keep only the last returns and you have the shape of the ground itself, with the trees and underbrush removed. That bare-earth model is the LiDAR map: contours, old ditches, low spots where water sits and the true grade of the tract, all visible before a single tree comes down. A photo of the same tract only ever shows the top of the canopy.
The thicker the growth, the fewer pulses reach the ground, so very dense yaupon or palmetto can leave thin spots. We plan the flight for the vegetation and show you where coverage came back thin.
Real Southeast Texas example, about 2 km across, near Lumberton in Hardin County. The photo shows nothing but trees. The LiDAR of the same ground shows what is under them: every branching drainage channel, the old ponds and the road beds. Blue-green is low ground, tan is high.
USGS National Map: 3DEP LiDAR elevation and NAIP aerial imagery (public domain). Rendering by TRP. Not a TRP project.
Real example: the same forested slope as (A) an aerial photo, (B) LiDAR first returns off the canopy, and (C) the LiDAR bare-earth model, where a fault line and drainages invisible under the trees show clearly. Lake Tahoe area, California.
Image: James F. Howle, U.S. Geological Survey. Not a TRP project.
Real example: one drone LiDAR scan shown twice. Removing the points classified as vegetation leaves the ground surface, including a landslide below the road. Mountain road in North Carolina, after Hurricane Helene.
Image: Mark Bauer, U.S. Geological Survey. Not a TRP project.
How thermal works
A thermal camera does not see light, it sees heat. Every surface gives off heat, and the camera turns small temperature differences into color, so something warmer or cooler than what is around it stands out even in full darkness.
That is what makes it useful. A person or an animal in brush at night is invisible to a normal camera and bright against cold ground in thermal. A failing solar panel runs hotter than the ones beside it. Water trapped in a flat roof holds the day's heat after sunset, so the wet area stays warmer than the dry roof around it. After a storm, thermal helps find damaged electrical equipment and hot spots that are not obvious from the air.
Thermal reads surfaces, not through them. It cannot see through walls, and under heavy tree canopy it only sees what shows through the gaps, which is why search flights are planned around open ground, clearings and the edges of the timber.
Real example: aerial thermal survey at night. Each small bright dot inside the boxes is a feral hog, picked out by body heat against cold ground and timber.
Image: B. Lubinski (USFWS) and L. Robinson (USGS), Mingo National Wildlife Refuge, Missouri. Not a TRP project.
Call 409-554-2287 or fill out our form for a no-obligation quote.
Drone LiDAR terrain data under the brush for Houston-side tracts, control-checked and ready for your surveyor to seal
Thermal and zoom inspection of refineries, terminals, substations and power lines, flown on NDAA-compliant Blue UAS hardware
Post-storm aerial photos, thermal and LiDAR of roofs, tree fall, flooding and access, for owners, adjusters and contractors
Clear acreage for building, pasture, or resale
Karl Gillihan, Owner
TRP Land Clearing & Excavation
Updated September 2026
Get a free, no-obligation estimate for your project.