Flood Risk Assessment in Rothbury

Rothbury sits on a bend of the River Coquet in Coquetdale, and its flood record is striking for a town of only around 2,000 people: the Coquet has risen more than three metres above its normal range in a single event. A flood risk assessment in Rothbury has to read the river, the ground and the town's drainage together, because the Environment Agency's own figures treat this part of the catchment as a growing risk, not a settled one. We prepare flood risk assessments in Rothbury for planning, property purchase, mortgage and insurance, and BREEAM, alongside sequential and exception tests and surface-water drainage strategies, for architects, planning consultants, developers, landowners, home buyers and businesses working in the town and the wider Coquet valley.

If you need a quote or want to talk a site through, contact one of our experienced flood risk consultants on 01293 214444.

On 6 September 2008 the River Coquet at Rothbury reached its highest level ever recorded, and more than 50 properties flooded, several of them above window height. That single event is the clearest reason any development here needs a properly evidenced flood risk assessment.

Flood risk assessment in Rothbury at a glance

• The Coquet gauge at Rothbury recorded 4.05m on 6 September 2008, its highest level on record, against a normal range of just 0.26m to 1.80m.
• More than 50 properties flooded in September 2008, several to six or seven feet up the walls, including a number of single-storey pensioners' cottages.
• The Environment Agency rates the Coquet sub-area's flood risk as "high and set to increase in the future" in its North East Northumberland Catchment Flood Management Plan.
• Storm Babet caused flooding and evacuations in Rothbury again in October 2023, fifteen years after the 2008 event.

Check flood risk anywhere in Rothbury

Rothbury is outlined below. Screen any postcode in the town and the surrounding parish against Environment Agency data for rivers and sea, surface water and the planning flood zones, with a climate outlook to 2125. It is an indicative first pass, not a substitute for a site-specific assessment.

A history of flooding in Rothbury

Rothbury's flood record goes back to at least the 1940s, and one event in particular still shapes how the town, the Environment Agency and Northumberland County Council think about development here. These dated events are the evidence base a flood risk assessment in Rothbury has to work from, not background colour.

• August 1946 — a Cheviot Hills storm. Heavy rain over the Cheviots and the coast between Alnmouth and Berwick caused thousands of pounds of damage in Rothbury, with floodwater cutting channels up to three feet deep into local roads.
• 1992 — Coquet valley flooding. Rapid snowmelt and channel overtopping affected the wider Coquet valley, including areas downstream at Warkworth.
• May 1996 — Riverside and the golf course. Rothbury Riverside and Rothbury Golf Course, both close to the river, flooded.
• 6 September 2008 — the defining flood. The Coquet at Rothbury reached 4.05m, its highest level on record, a rise of roughly 3.5 metres above the top of its normal range. More than 50 properties flooded, many to above window height and six to seven feet up the walls, including several single-storey cottages occupied by pensioners.
• July 2009 — a near-repeat. A similar event was narrowly avoided after Environment Agency channel and structure improvements carried out after 2008.
• October 2023 — Storm Babet. Rothbury flooded again and homes were evacuated, widely reported by BBC News, ITV News and the Northumberland Gazette.

Sources: the Northumberland Gazette's ten-years-on retrospective on the 2008 flood; Environment Agency gauge data for the River Coquet level at Rothbury; and BBC News coverage of Storm Babet in October 2023.

Flood risk assessment in Rothbury: the Coquet, its catchment and surface water

The River Coquet is the dominant flood risk in Rothbury. The town sits on a bend of the river as it drains a large, steep, largely rural catchment running back into the Cheviot Hills, so heavy rain upstream reaches Rothbury quickly as a sharp flood peak rather than a slow rise. Surface water, and on some sites groundwater, add to the picture, which is why an assessment here needs to look at every source together rather than lean on a single flood map.

The Coquet's catchment upstream of Rothbury is largely open moorland and hill farmland, which sheds rainfall quickly with little to slow it on the way down. That is why the river can climb from a normal level of well under two metres to over four metres in a matter of hours, as it did in 2008. Two Environment Agency flood warning target areas cover the town: "River Coquet at Rothbury", covering Upper Maltings, Well Strand, Model Buildings, Riverside, Stepping Stones and Armstrong Cottages, and "River Coquet at Lower Rothbury", covering Rothbury Mart, Gas Works Cottage, Thrum Mill and Burnfoot Lodge. An Upper River Coquet flood alert area further upstream gives early warning before the peak reaches the town.

• Rivers (fluvial). The Coquet is a main river and the town's principal source of risk, capable of a rapid, high-magnitude rise after heavy rain in the Cheviots. Land in Flood Zones 2 and 3 along the riverside almost always needs an assessment.
• Surface water (pluvial). Rothbury's steep streets and the surrounding hillside can shed rainfall fast in short, intense storms, adding a separate risk to low-lying parts of the town centre. Since the 2025 PPG update, surface water on the Flood Map for Planning can trigger an assessment even on a Flood Zone 1 site.
• Groundwater. River-terrace deposits along the Coquet can raise water tables locally, which matters for any soakaway, basement or below-ground level near the riverside. It is assessed as a source within the wider flood risk assessment, not as a separate report.
• Sewers and drainage. The town's surface-water sewers and any ordinary watercourses draining into the Coquet are Northumberland County Council's responsibility as Lead Local Flood Authority, rather than the Environment Agency's.

Flood defences and why the Environment Agency rates Coquet flood risk "high and rising"

The Environment Agency's own catchment plan is blunt about Rothbury's trajectory. Its North East Northumberland Catchment Flood Management Plan rates the Coquet sub-area's flood risk as "high and set to increase in the future," and sets out the case for further investment rather than treating the current position as settled.

The plan states the need to "invest more to reduce the risk of flooding and to reduce the hazard to the dispersed settlements as well as the town of Rothbury." It also flags protecting the natural floodplain from development, with afforestation and flood storage identified as future options that still need further investigation. After the 2008 flood, the Environment Agency carried out channel and structure improvements and ongoing maintenance work, and those are credited with helping the town narrowly avoid a repeat event in July 2009. That work reduces risk. It does not remove it. The current EA gauge data shows why the margin still matters: the normal range at the Rothbury gauge runs from 0.26m to 1.80m, property flooding becomes possible above about 2.70m, and the river has already reached 4.05m once. Climate change is expected to widen that margin further over a development's lifetime, which is why the Flood Map for Planning and any site-specific assessment have to apply the Environment Agency's climate change allowances rather than lean on the historic record alone.

• "High and set to increase in the future" is the Environment Agency's own description of the Coquet sub-area's flood risk in its Catchment Flood Management Plan.
• Investment need. The same plan calls for more investment to reduce risk to Rothbury and the dispersed settlements around it in the Coquet catchment.
• Property flooding threshold. At the Rothbury gauge, property flooding becomes possible once the river passes roughly 2.70m, well within reach of the 4.05m recorded in 2008.
• Floodplain protection. The Environment Agency flags protecting the Coquet's natural floodplain from development, with afforestation and flood storage as future options still needing further investigation.

Planning policy and your Lead Local Flood Authority in Rothbury

Northumberland County Council is both the local planning authority and the Lead Local Flood Authority (LLFA) for Rothbury, responsible for surface water, groundwater and ordinary watercourses, while the Environment Agency leads on the River Coquet as a main river.

As a unitary authority, the council also acts as the Coast Protection Authority for the wider county, though it is the LLFA role that matters most for a Coquetdale development. Northumberland is one of seven North East local authorities working together through the Northumbria Integrated Drainage Partnership, alongside Northumbrian Water, to apply a common set of drainage expectations across the region. The council's Local Flood Risk Management Strategy was approved on 4 November 2015 and sets the local framework alongside the adopted Local Plan.

Your assessment and drainage strategy must satisfy national policy (the NPPF and its Planning Practice Guidance) and the local framework set out above. Where a higher-risk Coquetdale site is involved, the Sequential and Exception Tests apply, and the right vulnerability classification has to be argued under NPPF Annex 3. On drainage, the joint North East LLFA SuDS Standards and the 2025 national SuDS standards shape what the council will accept. New development is expected to follow the drainage hierarchy and hold runoff towards greenfield rates wherever the ground allows.

• Risk assessed from every credible source, the Coquet, surface water and groundwater, using the Flood Map for Planning and local gauge data.
• An appropriate location, tested against the Sequential Test where policy requires it.
• Safe for its lifetime, once the Environment Agency's climate change allowances are applied.
• No increase in flood risk elsewhere, with attenuation and compensatory storage where needed.
• Residual risk managed, with safe access, egress and finished floor levels set against the Coquet's recorded extremes, not just its normal range.

Development and flood risk assessment in Rothbury

Rothbury sits just outside the Northumberland National Park boundary, in a tight conservation area on a bend of the Coquet, so the sites coming forward here tend to be small and sensitive rather than large greenfield allocations. That changes what an assessment needs to cover.

• Conservation area infill. Rothbury's historic core sits close to the river, so infill and backland development within the conservation area often falls inside Flood Zone 2 or 3 and needs finished floor levels and safe access agreed before a scheme can proceed.
• Riverside and holiday-let conversions. Coquetdale's visitor economy means barns, cottages and former mill buildings near the river are regularly converted or extended for holiday letting, which changes the vulnerability classification a flood risk assessment has to argue.
• Extensions to existing riverside properties. Many of the town's older cottages, some directly affected in 2008, sit close to the water's edge, so even a modest extension can trigger an assessment where the original building already carries recorded flood history.
• Rural and agricultural conversions. Barn conversions and diversification schemes on the edges of the parish, away from the Coquet itself, more often turn on surface water and drainage capacity than on river flood risk.

Climate change is not optional in any of this. An assessment for a Rothbury site must apply the Environment Agency's allowances for higher river flows and rainfall over the development's lifetime, generally 100 years for housing, which sets floor levels, freeboard and how much attenuation a drainage strategy needs, especially given how far above its normal range the Coquet has already been proven to rise.

How Unda helps with flood risk assessment in Rothbury

We sit between your scheme and the requirements set by the Environment Agency, Northumberland County Council and national planning policy, and turn those requirements into a report that gets approved. We know Rothbury's flooding in detail, not as a place-name swapped into a template.

A flood risk assessment in Rothbury from Unda assesses every credible source: the Coquet, surface water, groundwater and any ordinary watercourse nearby. We compare modelled flood levels against your proposed floor levels, set safe access and egress, and recommend mitigation the regulators will actually accept. We are a CIWEM Business Partner with chartered members, we have completed more than 5,000 flood risk assessments since 2014, and a senior consultant signs off every report. Where the council needs it, a surface-water drainage strategy sits alongside the assessment as a separate report, so the two cases stay consistent and an objection has nowhere to land.

You can get an early read for yourself with our free flood risk map, check whether the Coquet is running high on our live river levels map, and test whether the ground is likely to suit a soakaway with our geology and ground conditions checker. Then talk the result through with one of our flood risk consultants.

Flood risk assessments and related reports for every situation in Rothbury

A flood risk assessment, a sequential or exception test and a drainage strategy answer different questions: is the site safe, should the development be here, and where does the surface water go. We prepare each of them for sites in Rothbury and across Coquetdale.

• Flood risk assessment for planning. The core report, site-specific and prepared to satisfy the NPPF, the Environment Agency and Northumberland County Council. Groundwater and, where needed, flood modelling are assessed within it.
• Homebuyer and property-purchase survey. For conveyancing, where a search has flagged Coquet or surface-water risk and you need the actual building assessed, not a broad map.
• Flood risk assessment for insurance. Property-specific evidence for brokers and underwriters where premiums have risen or cover has been restricted after a flood event.
• Flood risk assessment for BREEAM. Structured around BREEAM Pol 03, which is credit-driven rather than safety-driven, so a planning FRA alone rarely satisfies it.
• Sequential and Exception Tests. The locational case for whether a development should be in a higher-risk part of Rothbury at all, prepared alongside the assessment where policy requires it.
• Groundwater flood risk. A defensible design water table for riverside sites and any basement, assessed as a source within the assessment or as a standalone hydrogeological study on complex sites.
• Sustainable drainage strategy (SuDS). Surface-water engineering that calculates existing versus proposed runoff and proposes SuDS to hold discharge within the North East LLFA standards.
• Preliminary drainage design and discharge of conditions. The early outline read before layout is fixed, and the detailed stage to discharge a pre-commencement or pre-occupation drainage condition.

Early in a drainage strategy it helps to know whether the ground will take water: our free geology and ground conditions map and BRE 365 infiltration rate calculator give an indicative read before a trial pit, and the drainage calculators help size the scheme. Rothbury is part of our wider coverage of flood risk assessment across Northumberland, alongside Morpeth and Newcastle upon Tyne.

Rothbury flood resources and contacts

The most reliable Rothbury flood information comes from the lead authorities. For an immediate threat to life during a flood, always call 999; for a power cut during flooding, call 105.

• Check for flooding in Rothbury. Environment Agency live warnings, the Rothbury river gauge and maps at check-for-flooding.service.gov.uk; sign up for flood warnings or call Floodline on 0345 988 1188.
• Rothbury flood warning areas. The River Coquet at Rothbury and River Coquet at Lower Rothbury target areas, plus the Upper River Coquet alert area upstream, define who receives an Environment Agency flood warning.
• Northumberland County Council flood risk. Strategy, developer guidance and flood reporting for the LLFA and Coast Protection Authority.
• North East LLFA SuDS standards. The regional drainage standards the council applies, agreed across the seven North East authorities.
• Northumbria Regional Flood and Coastal Committee. Regional investment and priorities affecting the Coquet catchment.
• Sewer flooding. Northumbrian Water is responsible for public sewers in Rothbury.
• Local flood group. A community Rothbury Flood Group exists as a local resource alongside the statutory bodies above.
• Live river levels. Whether the Coquet is running high right now via our live river levels map.

Flood risk assessment in Rothbury: frequently asked questions