What Are Monolith Water Features?
Monolith water features are natural stone features designed to create a striking vertical focal point in a garden. Usually formed from a single upright piece of stone, they combine the character of natural material with the movement and sound of flowing water.
At Erth Stone, our slate monolith water features are individually photographed and pre-drilled, allowing water to flow through the stone when connected to a compatible recirculating water feature kit. Their natural shape, colour and texture mean each piece has its own individual character.
Looking for a feature for your garden? Explore our Monolith Water Features in a range of individual shapes and sizes.
Section 1: What Are Monolith Water Features?
Definition and Characteristics
Monolith water features are created from a single, substantial piece of natural stone positioned upright to form a strong vertical focal point. The stone is typically pre-drilled so water can be pumped through the centre and released at the top, before flowing back over the surface into a hidden reservoir below.
Each monolith is selected for its individual shape, texture, colour and natural markings, so no two pieces are exactly the same. This makes monolith water features particularly suited to gardens where a distinctive natural stone feature is required.
Unique Shape, Texture and Colour
One of the main attractions of a monolith water feature is the natural variation within the stone itself. Slate can display layered textures, mineral markings and subtle changes in colour, while the surface often becomes richer and more pronounced when wet.
Because every piece of natural stone forms differently, each monolith has its own profile and character. This gives the finished water feature a more individual appearance than a manufactured or moulded design.
Section 2: How Do Monolith Water Features Work?
Recirculating Water System
Most monolith water features use a simple recirculating system. Water is stored in a reservoir below the feature and pumped through a hose that runs up through the pre-drilled stone.
The water emerges at the top of the monolith and flows back over the surface before draining through the support grid into the reservoir below. The same water is then continuously recirculated through the system.
Pump, Reservoir, Grid and Hose
A typical monolith water feature setup uses:
- Pre-drilled stone monolith
- Reservoir
- Support grid
- Water pump
- Hose
They do, however, normally require a suitable outdoor electrical supply for the pump. Electrical equipment used around garden water features should be installed and operated safely; see Electrical Safety First’s garden safety guidance for further information.
Section 3: What Are Monolith Water Features Made From?
Slate Monolith Water Features
Slate is particularly well suited to monolith water features because of its distinctive layered texture and natural variation in colour.
Grey slate can display subtle mineral markings and tonal changes, while plum slate introduces warmer purple and earthy tones. When wet, the stone often develops deeper colours that help highlight its natural texture and character.
At Erth Stone, our monolith water feature collection includes individually photographed grey and plum slate monoliths in a range of shapes and sizes.
Common Natural Stone Materials
Natural stone water features can be made from several materials, each creating a different appearance:
- Slate: Characterised by layered textures and rich natural colour variation.
- Granite: A dense, durable stone with a rugged, granular appearance.
- Limestone: Typically features softer, neutral colouring and a more understated finish.
At Erth Stone, our monolith water feature range is primarily made from natural slate, while granite and limestone are used across other styles of water feature.
Other Natural Stone Water Features
The type of stone can also influence the overall style of a water feature. Boulder water features create a lower, more naturalistic appearance, while stacked stone water features use layers of natural stone to create greater height and a more pronounced flow of water.
Explore our full Natural Stone Water Features range to compare monolith, boulder and stacked stone designs.
Section 4: Why Choose a Monolith Water Feature?
Strong Vertical Focal Point
The upright shape of a monolith introduces height and structure into a garden, making it particularly effective where a strong focal point is needed.
They work well at the end of a garden path, within a gravel garden, beside a patio or as part of a larger planted border.
Natural Stone Character
Every monolith has its own natural shape, surface texture and markings.
This means the finished water feature retains the individual character of the stone rather than looking identical to every other feature.
Movement and Sound
Flowing water adds movement and sound to an outdoor space while helping bring out the natural colour and texture of the stone.
The effect can range from a gentle trickle to a more noticeable flow depending on the pump and the shape of the monolith.
Suitable for Different Garden Styles
Monolith water features work particularly well in:
- Contemporary gardens
- Japanese-inspired gardens
- Gravel gardens
- Courtyards
- Planted borders
- Larger landscaped spaces
Section 5: What Size Monolith Water Feature Should I Choose?
Small Monolith Water Features
Monoliths around 300–600mm are well suited to smaller gardens, patios and courtyards where a lower-profile feature is preferred.
Their more compact size allows them to introduce natural stone and flowing water without dominating the surrounding space.
Medium Monolith Water Features
Monoliths around 900–1200mm provide more height and work well in medium-sized gardens, larger borders and gravel landscaping.
They create a clear focal point without having the scale of the largest statement pieces.
Large Monolith Water Features
Monoliths around 1300–1400mm create a much stronger architectural feature.
These larger pieces are particularly suited to substantial gardens, prominent positions and larger landscaping schemes.
Always check the exact dimensions and weight of the individual stone before ordering.
Section 6: How Are Monolith Water Features Installed?
Preparing the Reservoir
Installation usually begins by positioning the reservoir below ground level on a firm, level and stable base.
The support grid is then placed over the reservoir to support the weight of the monolith and any decorative stone used around the feature.
Connecting the Pump and Hose
The pump is positioned inside the reservoir and connected to the hose.
For a pre-drilled monolith, the hose is carefully fed through the drilled channel in the stone so water can be pumped to the top of the feature.
Positioning the Monolith
The monolith is then carefully positioned above the reservoir and support grid, making sure it is stable and correctly aligned before the system is operated.
Natural stone monoliths can be extremely heavy, particularly at larger sizes. Suitable assistance or lifting equipment may be required, and larger pieces are often best installed by an experienced landscaper.
For a full step-by-step guide, read our How to Install a Garden Water Feature: 5 Easy Steps.
Section 7: Are Water Feature Kits Included?
What Is Included in a Compatible Kit?
Water feature kits are sold separately unless the individual product page states otherwise.
Compatible kits typically include:
- Reservoir
- Grid
- Pump
- Hose
These are the main components required to create a recirculating system.
How Do I Add a Kit?
At Erth Stone, a compatible water feature kit can be added when selecting your chosen water feature.
This allows you to choose the natural stone first and then add the required installation components at the same time.
Section 8: Where Should I Position a Monolith Water Feature?
Patios and Courtyards
Smaller monoliths work particularly well beside seating areas, patios and courtyards, where the sound and movement of water can be enjoyed at close range.
Gravel Gardens and Borders
Slate monoliths also sit naturally within decorative gravel, chippings and planted borders.
The contrast between the upright stone, lower planting and surrounding aggregates can create a strong landscaped finish.
Japanese-Inspired Gardens
The simple vertical form of a natural stone monolith works particularly well within Japanese-inspired garden designs, especially when combined with gravel, planting and carefully positioned boulders.
Practical Positioning
Also consider:
- Access for installation
- Suitable ground conditions
- Proximity to an outdoor electrical supply
- Space for future maintenance
- Visibility from seating areas or the house
Section 9: How Do I Maintain a Monolith Water Feature?
Checking the Water Level
Water levels should be checked regularly, especially during warmer or windy weather when evaporation may increase.
The pump should remain sufficiently submerged while operating.
Cleaning the Pump and Reservoir
Leaves, debris and other material can collect in the reservoir or around the pump intake.
Periodically inspect the system and clean it in accordance with the pump manufacturer's instructions.
Looking After the Stone
Natural stone may gradually develop surface deposits or organic growth depending on its location and water conditions.
Clean the stone when required using a method suitable for the particular material and always avoid products that could damage the stone or pump system.
Section 10: Monolith Water Features and Wildlife
Can Monolith Water Features Attract Wildlife?
Birds and insects may be attracted to accessible water within a garden, although a monolith water feature should not be treated as a replacement for a dedicated wildlife pond.
If supporting wildlife is a priority, consider combining the feature with suitable planting and a separate shallow water source where appropriate. The RHS guide to garden water habitats provides further ideas for creating wildlife-friendly water areas.
Designing Around a Monolith Water Feature
Planting, boulders, cobbles and decorative chippings can help integrate a monolith water feature naturally into the surrounding landscape.
Explore our Garden Chippings & Self-Binding Gravel and Rockery Stones & Garden Boulders for complementary landscaping materials.
Frequently Asked Questions
What Is a Monolith Water Feature?
A monolith water feature is a tall natural stone feature that is typically pre-drilled so water can be pumped through the stone and allowed to flow over its surface.
Do Monolith Water Features Need Mains Plumbing?
Usually not. Most use a recirculating reservoir system, so the same water is continuously pumped through the feature.
Do Monolith Water Features Need Electricity?
Most monolith water features use an electric pump, so a suitable outdoor electrical supply is normally required.
Can Monolith Water Features Be Used in Small Gardens?
Yes. Smaller monoliths around 300–600mm can work particularly well in patios, courtyards and compact gardens.
Are Monolith Water Features Pre-Drilled?
At Erth Stone, our monolith water features are pre-drilled for use with a compatible recirculating water feature kit.
Are Water Feature Kits Included?
No. Water feature kits are sold separately and can be added when selecting your water feature. Compatible kits include the reservoir, grid, pump and hose.
Can I Install a Monolith Water Feature Myself?
Smaller pieces may be suitable for competent DIY installation. Larger slate monoliths can be extremely heavy and may require additional people, suitable lifting equipment or an experienced landscaper.
Do I Receive the Exact Monolith Shown?
Where stated on the individual product page, our monoliths are photographed so you can choose the exact natural stone you will receive.
Conclusion
Monolith water features combine natural stone, vertical form and flowing water to create a distinctive focal point for gardens and landscaped outdoor spaces.
Their individual shape, layered texture and changing appearance when wet make slate monoliths particularly effective in contemporary, Japanese-inspired and gravel garden designs.
Ready to choose your own? Explore our Monolith Water Features, including individually photographed, pre-drilled slate monoliths in a range of sizes.
