How and why do people manage coastal landscapes, and how sustainable are the choices?
Human activity and coastal management; hard and soft engineering and managed realignment; shoreline management plans; conflicts between stakeholders; and the sustainability of approaches under sea-level rise.
An Eduqas A-Level Geography answer to coastal management in Component 1, covering human pressures on the coast, hard and soft engineering, managed realignment, shoreline management plans, stakeholder conflicts, cost-benefit and sustainability under sea-level rise, with UK examples such as Holderness and the Essex coast.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this dot point is asking
Eduqas wants you to explain why and how people manage coastal landscapes, compare hard engineering, soft engineering and managed realignment, understand shoreline management plans and the conflicts they create, and judge how sustainable each approach is as sea level rises.
The answer
Why and how the coast is managed
People manage the coast because erosion removes land, homes, farmland and infrastructure, and flooding of low-lying coasts threatens lives and property, especially under sea-level rise. The four shoreline management plan policies are: hold the line (maintain the present defences), advance the line (build new defences seaward), managed realignment (allow the coast to retreat to a new defended line) and no active intervention (let nature take its course). Each is chosen for a sub-cell on the basis of the value of what is at risk and the cost and sustainability of defending it.
Hard and soft engineering
Sea walls reflect wave energy and protect the land directly but are costly and can scour the beach in front; groynes trap longshore drift to build a wider, protective beach but starve the coast downdrift; rock armour (rip-rap) absorbs energy cheaply but is intrusive; revetments break the waves on a sloping structure. Beach nourishment replaces lost sediment to widen a beach and is sustainable but needs repeating; dune stabilisation plants marram grass and fences the dunes to protect the natural sea defence behind. The choice depends on the value of the land, the cost, the energy of the coast and the effect on neighbouring stretches within the sediment cell.
Conflict and sustainability
Coastal decisions create stakeholder conflict: residents and businesses want protection, taxpayers and government weigh cost, conservationists value natural processes and habitat, and people downdrift bear the consequences of defences updrift. Cost-benefit analysis and environmental impact assessment inform the choice, but the value placed on a stretch differs between stakeholders. As sea level rises and storms intensify, holding every line becomes unaffordable, so managed realignment and no active intervention are increasingly chosen for low-value coasts, accepting land loss in exchange for sustainable, habitat-rich, lower-cost defence.
Examples in context
Example 1. Holderness and Mappleton, East Yorkshire. At Mappleton in 1991, two rock groynes and a revetment were built to protect the village and the coast road on the rapidly eroding Holderness coast. They trapped longshore drift and built a protective beach, saving Mappleton, but the cliffs immediately south were starved of sediment and now erode faster, with a farm and access road lost. Mappleton is the textbook Eduqas case for how hold-the-line hard engineering protects one place by worsening erosion downdrift, showing why decisions must be taken at the scale of the whole sediment cell.
Example 2. Managed realignment on the Essex coast. On low-lying, low-value stretches of the Essex coast (for example around the Blackwater estuary and at Wallasea Island), sea walls have been deliberately breached to let the tide flood farmland behind, recreating salt marsh and mudflat. The restored marsh absorbs wave energy and reduces flood risk on the defences behind, creates internationally important bird habitat, and cuts the long-term cost of maintaining hard defences against rising sea level. Essex is the model Eduqas example of managed realignment as a sustainable response where land value is low and habitat gain is high.
Try this
Q1. Name the four shoreline management plan policy options. [2 marks]
- Cue. Hold the line, advance the line, managed realignment, and no active intervention.
Q2. Explain one disadvantage of building groynes. [3 marks]
- Cue. Groynes trap longshore drift to widen the local beach, but this starves the coast downdrift of sediment, raising erosion rates there, so the problem is shifted rather than solved.
Exam-style practice questions
Practice questions written in the style of WJEC Eduqas exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Eduqas 2019 (style)8 marksExplain the differences between hard and soft engineering approaches to coastal management.Show worked answer →
Define each approach and contrast them on method, cost, lifespan and impact.
Hard engineering uses built structures to resist the sea: sea walls, groynes, rock armour (rip-rap) and revetments. They are effective and protect high-value land but are expensive, can look intrusive and often shift the problem downdrift.
Soft engineering works with natural processes: beach nourishment, dune stabilisation and managed realignment. It is usually cheaper, more sustainable and less intrusive, but offers less certain short-term protection and may require ongoing maintenance.
A strong answer pairs a named example with each (groynes and rip-rap at Mappleton; beach nourishment at Bournemouth) and contrasts their sediment-cell consequences.
Markers reward a structured contrast with examples, not two separate lists.
Eduqas 2022 (style)12 marksEvaluate the view that managed realignment is the most sustainable response to coastal flooding and erosion.Show worked answer →
A 12-mark evaluation requiring a judgement weighed against alternatives.
Argue for: managed realignment works with rising sea level rather than against it, restoring salt marsh that absorbs wave energy, creating habitat, and cutting the long-term cost of maintaining defences, as on the Essex coast and at low-value rural stretches.
Argue against: it means abandoning land, homes and farmland, which is politically and socially difficult; it is not viable where high-value property or infrastructure must be protected, so hard engineering remains justified there.
Weigh sustainability across economic, social and environmental dimensions and across timescales, concluding that managed realignment is most sustainable on low-value, low-population coasts but cannot be a universal answer, so a portfolio matched to each stretch (hold the line, advance, managed realignment, no active intervention) is the genuine sustainable strategy.
Markers reward a balanced, exemplified judgement against criteria.
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Sources & how we know this
- Eduqas A-level Geography specification (from 2016) — Eduqas (2016)