AgricultureIrrigation, Drainage & Waterlogging Survey
Irrigation, Drainage & Waterlogging Survey
across Gloucestershire
Water goes where the ground tells it to. We build an elevation model of your fields, then map the flow paths, low spots and wet zones so you can plan new drains, repair old ones, or design irrigation with real data rather than guesswork.
Key facts
| Minimum fee | £550 |
|---|---|
| Per-acre rate | £65–£90 (above 8 acres) |
| Typical day rate | £800–£1,050 |
| Call-out | Free within 30 miles of Cheltenham |
| Best timing | After heavy rain for wet-zone mapping; any time for elevation |
| Point cloud / CAD add-on | +£100–£250 |
What it's used for
- Planning new field drainage schemes
- Finding failed or blocked land drains
- Irrigation layout and reservoir planning
- Flood-risk and run-off assessments
What you receive
| Deliverable | Format |
|---|---|
| Digital Surface Model (DSM) | GeoTIFF |
| Flow-path and ponding map | GeoTIFF / PDF |
| Contours | DXF / SHP |
| Waterlogging zone report |
How it works
- Quote — tell us the site and what you need; we reply with a fixed price.
- Planning — we check airspace, permissions and weather, and complete a risk assessment.
- Flight — automated flight plan over the site; most jobs are a single visit.
- Processing — imagery is processed into maps, models or reports.
- Delivery — your files are delivered by secure download, plus 3 months of the Farm Dashboard free for new clients.
Equipment
DJI Mavic 3 Multispectral
| RGB camera | 20 MP, 4/3 CMOS |
|---|---|
| Multispectral camera | 4 × 5 MP: Green 560 nm, Red 650 nm, Red Edge 730 nm, NIR 860 nm |
| Light sensor | Built-in sunlight sensor for calibrated readings |
| Flight time | Up to 43 minutes per battery |
Equipment specifications: DJI Mavic 3 Multispectral specs.
Price adjustments
| Situation | Adjustment |
|---|---|
| Site under minimum acreage | Minimum fee applies |
| Site 50–100 acres | −10% on per-acre rate |
| Site 100+ acres | −15% or formal quote |
| 3+ visits agreed upfront | −10% per visit |
| Travel beyond 30 miles of Cheltenham | +45p per mile |
| Point cloud / CAD contours | +£100–£250 |
| Weekend / bank holiday flights | +20% |
All prices exclude VAT.
Related services
- 3D Terrain Model (DSM/DTM) for Farmland — from £600
- NDVI & Crop Health Analysis — from £400 per visit
- Field Mapping & Boundary Survey — from £450
Frequently asked questions
Can a drone find old land drains?
Drains often show up as lines of different crop vigour or soil moisture. Flying after rain, or with NDVI, gives the best chance of picking them out.
Do I get contours?
Yes. Contours at your chosen interval are included as DXF or SHP.
3 months of the Farm Dashboard free for new clients
Tell us about your land or site.
We reply with a fixed, no-obligation price. Free call-out within 30 miles of Cheltenham.