The Complete Guide to Pond Construction, Desilting, Wildlife Ponds, Wetland Restoration & Water Management

Ponds and lakes are a defining feature of the Kent and East Sussex countryside — from farm irrigation ponds to wildlife ponds and garden features. Every pond needs proper construction and maintenance to stay healthy and functional.

We've been building, restoring and maintaining ponds and lakes across the South East for over 10 years — from small garden ponds to estate lakes, handling every stage in-house.

Building a new pond involves several key stages:

1. 1.Site assessment and design — we assess the ground conditions, water sources, and outfall options, and design the pond's shape, depth, lining and overflow.
2. 2.Excavation — we excavate the pond to the designed shape and depth with our excavators, shaping the banks and creating varying depths for aquatic habitat.
3. 3.Lining — we line the pond with puddled clay (the traditional, natural method) or a membrane liner (butyl or PVC), depending on the pond's purpose and ground conditions.
4. 4.Overflow and inlet installation — we install the overflow pipe and inlet to control the water level and ensure proper water management.
5. 5.Filling and finishing — the pond fills naturally from groundwater, rainfall or a diverted water source, and we finish the banks and surrounding area.

All construction carried out with our own excavators — no subcontractors, no delays.

Every pond naturally silts up over time — soil, leaves and organic matter wash in and reduce depth and capacity. A pond that was 1.5m deep may become just 30cm, too shallow to support healthy aquatic life.

We drain if needed, excavate the silt, reshape banks and bed, repair leaks, restore overflow and refill. For neglected ponds, we also clear vegetation, remove trees and reshape slumped banks. Find out more on our silted pond restoration page.

Wetlands are among the most valuable and threatened habitats in the South East. We carry out wetland creation and restoration for conservation projects, estates, farms and development sites — re-establishing habitat that supports biodiversity and reduces downstream flooding.

Our works include scrape construction, reed bed creation, marginal habitat works, ditch restoration and water level management. We work with landowners and conservation organisations across Kent and East Sussex.

A leaking pond is common — water escapes through damaged lining, cracked pipes or animal burrowing. We diagnose the cause by inspecting construction, lining, overflow and banks.

For clay-lined ponds, we re-line with fresh puddled clay. For membrane ponds, we repair or replace the liner. Find out more on our pond leaking repair page.

A pond is a living ecosystem that needs regular maintenance to stay healthy. Without ongoing care, ponds become overgrown, silted up and stagnant — problems that are much more expensive to fix than to prevent.

Our pond maintenance services include:

• Silt removal — partial or full desilting to restore depth and water quality
• Vegetation management — controlling reeds, rushes and marginal plants to prevent them taking over
• Algae and blanket weed control — physical removal and addressing the nutrient cause
• Bank repairs — fixing erosion, slumping and animal damage
• Overflow and inlet clearance — ensuring water can flow freely in and out

We recommend annual or biennial maintenance for most ponds. Regular maintenance extends the life of the pond, prevents expensive restoration work, and keeps the waterbody looking its best. Find out more on our pond cleaning & maintenance page.