Terrain Intelligence
See how water
moves.
Drone LiDAR scanning and hydrological analysis that turns invisible terrain into actionable water management intelligence.
What We Do
Services
From drone flight to hydrological simulation — we deliver terrain intelligence, not just data. Every project produces actionable recommendations for water management.
Aerial Photogrammetry
Multi-sensor image acquisition at 1–2 cm/px GSD. We process overlapping nadir and oblique imagery into dense point clouds, DSMs, and classified orthomosaics using structure-from-motion (SfM) pipelines with RTK/PPK georeferencing.
Orthomosaic Mapping
Radiometrically corrected, distortion-free GeoTIFF orthomosaics with embedded coordinate reference systems. Every pixel is georeferenced to NAD83/WGS84 — ready for direct import into ArcGIS, QGIS, or AutoCAD Civil 3D.
3D Terrain Modeling
Bare-earth DTMs and first-return DSMs at 5–10 cm resolution. Delivered as TIN meshes, raster grids, or contour lines in LandXML, DXF, and GeoTIFF formats for cut/fill analysis, grading design, and hydraulic modeling.
LiDAR Scanning
Airborne LiDAR with the Zenmuse L2 sensor — 5 returns per pulse, 240k pts/sec, canopy-penetrating 905nm wavelength. We deliver classified LAS/LAZ point clouds (ground, vegetation, structures) with absolute accuracy under 2 cm.
Volumetric Analysis
Stockpile volumetrics calculated from drone-derived surface models with ±1.5% accuracy. Repeat flyovers enable automated change detection, material tracking, and earthwork quantity verification against design surfaces.
Construction Monitoring
Periodic aerial captures compared against BIM/CAD design models to quantify deviation, track progress, and verify as-built conditions. Deliverables include 4D timeline maps, progress overlays, and automated reporting.
How We Work
Our Process
Scope
Site review, GSD/overlap spec, GCP layout planning, airspace authorization (LAANC), and deliverable format agreement.
Capture
RTK/PPK-enabled flight execution with redundant GNSS base station. Automated waypoint missions at calculated altitude for target resolution.
Process
SfM/MVS photogrammetric reconstruction or LiDAR point cloud classification. QA against ground control with RMSE reporting.
Deliver
Georeferenced deliverables in your CRS — GeoTIFF, LAS/LAZ, DXF, LandXML, Shapefile. Full metadata and accuracy report included.
500+
Surveys Delivered
<2cm
Absolute Accuracy
50k+
Acres Mapped
48hr
Data Turnaround
Deliverables
Survey-Grade Output
Every dataset undergoes rigorous QA against ground control points. We deliver in your coordinate reference system, in formats your team already uses.
Classified Point Clouds
Dense LAS/LAZ with ground, vegetation, and structure classes. Up to 500 pts/m² from LiDAR, 200 pts/m² from photogrammetry.
DTM / DSM Generation
Bare-earth and first-return surface models at 5–10 cm grid resolution. TIN mesh, raster grid, and contour line output.
Georeferenced Orthomosaics
True-ortho GeoTIFF at 1–2 cm/px with embedded CRS. Direct import into ArcGIS, QGIS, AutoCAD Civil 3D, and Global Mapper.
Elevation Heatmaps
Color-coded elevation rasters with contour overlays for quick visual analysis. Ideal for grading verification and drainage studies.
Flight Planning & QA
Automated waypoint missions with calculated GSD, overlap, and sidelap. Post-flight QA includes RMSE reporting against GCPs.
Cross-Sections & Profiles
Terrain profiles extracted at any alignment. Cut/fill volumes calculated between existing surface and design grade.
Our Work
Selected Projects
Playa Vista Master-Planned Community
120-acre residential site — 4,200 images at 1.2 cm/px GSD processed into a classified point cloud (38M points), bare-earth DTM, and 2-cm contour deliverable in LandXML for civil design.
I-15 Corridor Vegetation Study
12-mile Caltrans corridor scanned with Zenmuse L2 — 480M classified LiDAR points penetrating dense riparian canopy. Delivered ground-classified LAS, bare-earth DTM, and vegetation height model.
Vulcan Materials Stockpile Audit
Monthly volumetric monitoring across 45-acre aggregate operation. 23 individual stockpiles measured with ±1.2% accuracy vs. truck-scale verification. Automated change-detection reporting.
The Grand LA Mixed-Use
Bi-weekly progress captures over 18 months — orthomosaics overlaid on Revit design model to quantify deviation. 4D timeline deliverable with automated progress percentage calculation.
Who We Are
Answers, not
just data.
Twinn Digital is a drone LiDAR scanning and hydrological analysis company. We help landowners, engineers, governments, and development organizations understand exactly how water moves across their land — and what to build to manage it.
We create high-resolution digital elevation models using drone-mounted LiDAR, then run advanced hydrological analysis and rainfall simulations to identify drainage problems, flood risks, erosion vulnerabilities, and optimal locations for water infrastructure. You receive actionable intelligence — not raw data.
Our hub-and-spoke model means expert analysis and flight planning happen centrally, while trained launch technicians execute autonomous missions anywhere in the country.
Analysis, Not Just Data
Most drone companies deliver files. We deliver answers — hydrological analysis, rainfall simulation, and specific recommendations for what to build and where.
Water Specialization
We focus exclusively on water management applications. Deeper domain expertise, better-tuned workflows, and stronger results than generalist survey providers.
Nationally Scalable
Our remote-first model decouples expertise from geography. Expert analysis happens centrally while trained technicians collect data anywhere in the country.
FAA
Part 107 Certified
ASPRS
Member
Insured
$2M Liability Coverage
Get In Touch
Start a Project
info@twinndigital.com
Phone
(310) 243-6223
Location
Southern California
Serving all of SoCal
Hours
Mon — Fri, 8am — 6pm PST
Flights scheduled 7 days/week