Windblown Forestry Damage


Forestry | Storm Damage Assessment

When the storm has passed,
understanding the damage is
just the beginning.

Fallen timber, blocked access routes and
unstable trees can make assessing storm
damage a challenging and potentially
dangerous task.

Drone technology provides a different
perspective, helping forestry professionals
see the extent of the damage, understand
the landscape and plan what happens next.

Aerial image of windblown forestry following Storm Arwen

Actual storm damage surveyed by Iprosurv

The Challenge

A changing landscape.
An urgent need for information.

Severe storms can damage hundreds of
hectares of managed woodland, leaving
forestry teams with difficult decisions
about access, safety, recovery and
future management.

The challenge is not simply identifying
fallen trees. It is understanding where
the damage has occurred, how extensive
it is and which areas require further
investigation.

Drone surveys provide a rapid aerial
overview of visible conditions, helping
organisations target their ground
assessments and avoid unnecessary
entry into hazardous areas.


Questions That Matter

Where is the damage?

Identify affected woodland compartments
and concentrations of windblown timber.

How much land is affected?

Use mapped imagery to establish
approximate areas of visible damage.

Can recovery teams gain access?

Identify obstructed tracks and
potential access constraints.

What information can be shared?

Provide visual records to landowners,
contractors, insurers and advisers.


Drone Applications

How drones are being used
in storm-damaged forestry

Drones are more than flying cameras.
With appropriate survey planning and
processing, aerial imagery becomes
useful information for assessing
damage and supporting recovery.

01 / INSPECTION

Locating fallen and damaged trees

Aerial imagery can reveal patterns of
windthrow, damaged stands and fallen
trees that may be difficult to recognise
from ground level.

02 / SURVEYING

Mapping damaged woodland

Overlapping aerial photographs can
be processed into orthomosaic maps.
These provide a georeferenced overview
to help locate, outline and measure
visibly affected areas.

03 / RECOVERY

Supporting clearance planning

Survey information helps forestry
managers identify access constraints,
prioritise detailed inspections and
coordinate contractors before
recovery operations begin.

04 / EVIDENCE

Documenting the damage

Aerial photography, mapped information
and digital models can provide a
valuable record for landowners,
forestry managers and insurance
assessments.


From Imagery to Intelligence

The survey is only the beginning.
The real value is in the data.

Capturing aerial images is one part of
the process. Processing those images
into useful, shareable information is
what allows forestry teams to make
better-informed decisions.

01. Aerial inspection

High-resolution imagery provides
an initial visual understanding of
site conditions and damage.

02. Orthomosaic mapping

Images are combined into a
georeferenced map, allowing visible
damage to be located and measured.

03. Digital survey outputs

Where appropriate, 3D models,
terrain data or LiDAR datasets
provide further spatial information
for planning and analysis.


Real Experience | Storm Arwen

This is not just what drones
could do. It is what we did.

Following Storm Arwen in November 2021,
Iprosurv was deployed to support the
assessment of extensive windblown
forestry.

The project involved aerial surveying,
high-resolution image capture and
processing into digital mapping
deliverables, helping the client
understand the affected area and
begin planning recovery operations.

250 ha

Survey area
8 hours

Approximate survey operation
72 hours

Data delivery timeframe

Figures relate to this specific
Iprosurv project. Survey durations
and deliverables vary according
to site conditions and requirements.


Read the Full Case Study

Drone survey of windblown trees after Storm Arwen

Iprosurv forestry storm-damage assessment
following Storm Arwen.


Why It Matters

Better visibility.
Better planning.
Better-informed decisions.

Reduce unnecessary exposure

Aerial inspection can reduce the
need for personnel to enter unstable
woodland simply to establish an
initial overview.

Understand the full picture

Mapped imagery provides spatial
context across the surveyed area,
helping teams identify where further
investigation is required.

Coordinate the response

Share suitable survey outputs with
forestry managers, contractors,
landowners and insurers to support
coordinated decisions.


The Iprosurv Approach

Technology selected around
your requirements.

No two storm-damage events are
identical, and neither are the
survey requirements.

Iprosurv combines professional
drone operations with expertise
in photogrammetry, aerial mapping
and digital data processing.

From initial visual assessments
to detailed orthomosaic mapping
and advanced survey deliverables,
we help establish an appropriate
approach based on your objectives,
site conditions and intended use
of the information.

We can also help organisations
develop their own internal drone
capabilities through professional
training, equipment supply and
operational consultancy.

What could your project include?

High-resolution aerial imagery

Photographic records of visible
storm damage and site conditions.

Orthomosaic mapping

Georeferenced imagery suitable
for review and spatial analysis.

3D and terrain datasets

Additional digital outputs
where equipment, conditions
and survey requirements permit.

Professional advice

Guidance on suitable survey
methods, training, software
and equipment.


Talk to Iprosurv

What could a clearer picture
mean for your forestry operations?

Whether you need an experienced drone
survey team, want to introduce drones
into your own operations or need
guidance on the right technology,
our team is here to help.


Discuss Your Project


Call 0114 4055 007

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How can we help?

Whatever you need drones to do, there are three ways to work with Iprosurv.

We do it for you

Our pilots carry out the survey or inspection and deliver the data and reports you need.

We show you how

Accredited courses that give you and your team the skills to fly safely and legally.

You do it yourself

The drones, sensors and software to run your own operations, with expert advice.

Not sure what you need?

Tell us what you are trying to achieve and we will recommend the right service, training or equipment.