Lake Management
Lake Management, Design & Maintenance in Devon & Cornwall
Professional lake care for private landowners, estates, and countryside properties across Devon and Cornwall.
Our expert team provides complete lake management services — from design and installation to ongoing maintenance, silt removal, and ecological planting — with management planned around the lake’s condition, intended use and wildlife.
🌊 Complete Lake Management Services
We provide long-term solutions to keep your lake clean, balanced, and beautiful. Whether you have a decorative lake, wildlife pond, or fishing lake, our lake management plans are tailored to your landscape and water conditions.
Our core services include:
- Lake Design & Installation – Full consultation and design for new or restored lakes. We assess site conditions, water flow, soil type, and wildlife potential.
- Silt Removal & Dredging – Assessment-led mechanical sediment removal where required, with any sediment treatment considered separately against deposit type, water chemistry and product instructions. Treatments do not remove mineral silt or replace dredging in every lake.
- Water Quality & Aeration Systems – Improve circulation and oxygen levels using natural aeration, on-shore pumps, and eco-friendly filtration if necessary.
- Aquatic Planting & Phytofiltration – We use native aquatic plants and natural bacteria to absorb nutrients and keep water clear.
- Fish & Wildlife Management – Maintain healthy, balanced ecosystems suitable for fish, frogs, and native species.
- Seasonal Maintenance Contracts – Regular checks and servicing to prevent algae, debris, and silt build-up.
✅ Our work aims to support biodiversity and long-term lake management. Methods are selected for the site; any treatment must be appropriate, permitted and used in accordance with its current instructions.
Lake Design & Installation
Designing a lake is both a science and an art. We start with a site assessment to identify the best location, soil type, and water supply.
- Ideal sites are low-lying with consistent inflow and good-quality water.
- We identify relevant planning and environmental permission requirements within the agreed scope and highlight where an appointed professional or authority needs to be involved. Required permissions must be in place before the relevant work.
- Our team handles everything from earthworks and liner installation (if needed) to bank shaping and planting.
Good design prevents long-term issues like silt build-up, poor drainage, and algae dominance — saving you thousands in maintenance costs later.
💧 Silt & Plant Control
Over time, all lakes naturally accumulate silt and organic debris, which can reduce depth and oxygen levels.
Our approach combines:
- Mechanical silt removal with timing, containment, sediment handling and wildlife protection planned for the site.
- Product-specific sediment treatment assessment, including Siltex only where the sediment, water chemistry and current manufacturer’s instructions support its use.
- Aquatic plant management — cutting back or rebalancing submerged, marginal, and floating vegetation.
The aim is to improve conditions while recognising seasonal change, continuing inputs and the need for monitoring. No treatment guarantees year-round clarity or removes every type of sediment.
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Fish & Water Health
Healthy fish depend on clean, oxygen-rich water. We test pH, nitrate, and oxygen levels, adjust filtration, and consider appropriate product-specific treatments where justified by the findings. Suitability, current label instructions, wildlife restrictions and required permissions are checked before use.
Our lake management services support:
- Private fishing lakes
- Estate and ornamental lakes
- Wildlife habitats and natural ponds
We also advise on stocking levels, feeding practices, and fish health monitoring to maintain balance in your ecosystem.
🌾Eco-Friendly Filtration & Aeration
We design lakes to maintain their own natural balance wherever possible — using native aquatic plants, marginal reed beds, and microbial filtration to keep the water clear and oxygenated without artificial systems.
In certain cases, such as high fish stocking levels or restricted water circulation, we may recommend discreet aeration systems to support oxygen levels.
Where power access allows, these are typically low-energy mains or hybrid setups; for off-grid sites, we can advise on wind-powered or solar-assist options where appropriate.
Our goal is always to help your lake function as a self-sustaining ecosystem, reducing the need for ongoing mechanical input.
These systems help:
- Prevent stagnation and algae growth.
- Encourage healthy fish and wildlife populations.
- Reduce the need for chemical treatment.
📅 Ongoing Lake Maintenance Packages
We offer annual and seasonal maintenance contracts for private landowners throughout Devon and Cornwall.
These packages include:
- Regular debris and algae removal
- Pump and filter servicing
- Water testing and adjustments
- Plant pruning and ecological balancing
🌿 Each plan is tailored to your lake’s size, condition, and wildlife goals.
[Explore our Pond Maintenance Packages ]
📍 Areas We Cover
Based on Dartmoor, we provide professional lake management across:
Exeter, Plymouth, Torbay, Newton Abbot, Tavistock, Okehampton, Bodmin, Truro, and surrounding areas in Devon and Cornwall.
Start with your lake
Share the lake location, photographs, approximate dimensions and what you want to improve. We will review the information and recommend the most useful next step, including a paid site assessment where needed.
📞 Call 08000371125
What causes silt build-up in lakes?
Deposits can include decaying organic matter and mineral sediment carried in by runoff or inflows. Their composition matters: a treatment for organic material will not remove sand or other mineral silt. Assessment helps distinguish source control, habitat management, treatment and physical removal options.
How does Siltex work?
Siltex is a calcium-carbonate-based product considered for some organic sediment conditions. It is not a universal substitute for dredging and will not remove mineral sediment. Suitability and any expected benefit must be checked against sediment composition, water chemistry and the exact current product instructions; no blanket wildlife-safety or performance guarantee is made.
Do you use machinery for silt removal?
Yes, where the assessment supports physical removal. The method and timing depend on access, sediment characteristics, containment and disposal arrangements, wildlife and any required permissions. Sensitive habitats or protected species may require specialist advice before work.
How do you keep lake water healthy?
We combine aeration systems (if needed), native aquatic planting, and water testing to maintain balance.
By improving oxygen and reducing nutrient levels, we help prevent algae blooms and keep fish and wildlife thriving naturally.
Do you manage fishing lakes or private estates?
Yes — we work with private landowners, country estates, and ornamental lake owners across Devon and Cornwall.
Our maintenance plans suit both wildlife-focused lakes and managed fishing waters, depending on your priorities.
Can you design or extend a lake?
Absolutely. We provide lake design and installation services, from planning and excavation to ecological planting.
If you already have an existing waterbody, we can also extend or re-profile it for improved water quality and aesthetics.
Are your lake treatments safe for wildlife?
Suitability is assessed for the exact product and site; we do not make a blanket claim that all lake treatments are Environment Agency-approved or harmless to wildlife. Current product instructions, species restrictions, water connections and any required permissions must be checked before use. Where specialist treatment is needed, appropriately qualified operatives carry out the relevant work.
How can I tell if my lake needs dredging or treatment?
Signs include:
Murky or stagnant water
Strong odours or algae blooms
Shallow areas or visible sludge
Fish gasping or reduced wildlife activity
If you notice any of these, book a professional lake assessment to prevent long-term damage.
Do you offer regular maintenance contracts?
Yes — our annual lake management packages include scheduled visits, silt and plant control, water testing, and fish health monitoring.
We offer flexible contracts across Devon and Cornwall, tailored to your lake’s condition and goals.
Why Choose SAS Aquatics For Lake Management?
SAS Aquatics can help with every stage of your lake management and development from design and implementation right through to maintenance. With years of experience in many aspects of the industry if you want to create a stunning environment, contact our expert team today.