The Emscher Transformation in Bottrop: A project for healthier waterways and a better future

A far-reaching ecological transformation is taking place across the entire Emscher region, reshaping the water landscape, restoring ecosystems and improving the quality of life for local people. One example of this progress is the Aspelflötte river restoration project in Bottrop, Welheimer Mark, which forms part of the wider Emscher redevelopment programme

This project represents a systematic shift away from historic open sewage channels towards a resilient, sustainable infrastructure that benefits both people and ecosystems.

M&P Water – part of SIERA ,is a German engineering and environmental services company with over 30 years’ experience in the fields of water management, environmental engineering, contaminated site remediation, land development and technical planning. The company combines in-depth engineering expertise with practical solutions for projects in both the public and private sectors. SIERA is a network for environmental engineering that brings together companies, investors and partners to develop and implement sustainable solutions with a measurable environmental impact. Together, they M&P Water and SIERA for combining in-depth expertise in environmental engineering with cutting-edge digital innovation.

Project Overview

The project named on the construction sign is:

• Project: Disconnection of the Aspelflötte in Bottrop
• Location: Bottrop, Welheimer Mark
• Context: Part of the broader Emscher River Restoration
• Client: Emschergenossenschaft
• Focus: Supporting cleaner, separate and more sustainable water systems

The overarching aim is not only to modernise the infrastructure, but also to restore water bodies to living systems and to improve the surrounding environment for future generations.

Why this project is important

The transformation of the Emscher is one of the most significant initiatives in the field of water infrastructure and ecological watercourse development in the region. According to the project information, the Emscher has been free of wastewater since the end of 2021. Newly constructed underground sewers have helped to divert polluted runoff from streams and the river.

This results in significant long-term benefits, including:

• Improved water quality
• Reduced levels of pollutants in natural water bodies
• Restored habitats for aquatic and semi-aquatic ecosystems
• Greater biodiversity
• Enhancing public spaces and the quality of the landscape
• New recreational opportunities, including along the Emscher Path

The return of what is described on the construction sign as „blue-green life“ is more than just symbolic — it represents the genuine ecological added value of modern hydraulic engineering when it is planned and implemented with a view to its long-term impact.

From water infrastructure to ecological regeneration

Projects such as this one show that water infrastructure can do more than simply drain water or separate wastewater. It can become a driving force for ecological regeneration.

The project to decouple the Aspelflötte contributes to:

1. Cleaner and more resilient waters
2. The restoration of ecological functions
3. A better balance between built infrastructure and natural systems
4. Regional climate resilience and sustainable land use
5. A better quality of life for the surrounding communities

In this sense, the project forms part of a wider shift in engineering thinking — a shift that combines technical performance with environmental and social benefits.

M&P Water: Engineering expertise for complex challenges in the water sector

As part of SIERA has M&P Water specialised expertise in hydraulic engineering and sustainable water management. The company supports its clients with solutions that combine technical precision, practical implementation and environmental responsibility.

This range of services is particularly relevant for transformation projects such as the Emscher Valley regeneration scheme, where the renewal of infrastructure must be combined with long-term environmental improvements.

Key solutions and services from M&P Water

Within the SIERA Networks offers M&P Water specialised solutions and services across a wide range of water-related disciplines, including:

Hydrological models

• Precipitation-runoff modelling
• Verification and processing of source data
• Model development and validation

Hydraulic models

• Analysis of flow behaviour in rivers, canals and hydraulic structures
• Simulation-based planning for efficient and safe hydraulic performance

Flood protection and heavy rainfall management

• Development of protection strategies for settlements and infrastructure
• Risk-based planning to improve resilience to extreme weather events

Dams, weirs and flood retention basins

• Design, refurbishment and optimisation of water-retention structures
• Technical support for the safe and sustainable operation of water management facilities

Hydropower

• Engineering support for water-related energy infrastructure
• Balancing technical requirements with environmental considerations

Ecological hydraulic engineering

• Integrating nature-based and ecosystem-sensitive solutions into infrastructure planning
• Supporting connectivity, habitat quality and watercourse restoration objectives

Building Information Modelling (BIM)

• Digitally supported planning and coordination\
• Greater transparency, efficiency and interdisciplinary collaboration in projects

Comprehensive project support

Bolstered by SIERA The range of services extends from M&P Water throughout the entire project lifecycle, including:

• Preliminary investigations and feasibility studies
• Concept development
• Design and detailed planning
• Construction supervision and on-site inspection
• Construction Management
• Consultancy services for clients
• Project management
• Technical reports

This holistic approach enables clients to benefit from seamless continuity throughout the planning and implementation phases, whilst ensuring that technical, operational and environmental requirements are aligned from the outset.

Why this is important for projects such as the Emscher Transformation

Large-scale water infrastructure projects are rarely one-dimensional. They must take into account hydraulic performance, environmental compliance, cost-effectiveness, the impact on public spaces and long-term resilience, all at the same time.

That is precisely why the multidisciplinary expertise of SIERA and M&P Water so relevant. Services such as:

• hydraulic and hydrological modelling
• ecological hydraulic engineering
• Flood protection planning
• Renovation of hydraulic engineering structures
• Construction supervision
• expert advice

are crucial to the implementation of modern water projects that are technically efficient whilst also delivering broader environmental benefits.

For projects involving watercourse restoration, separate sewerage systems or the adaptation of water systems to future requirements, this combination of in-depth engineering expertise and practical experience is of paramount importance.

SIERA: A broader platform for making an impact in environmental engineering

SIERA combines engineering expertise, strategic partnerships and environmental commitment within a shared ecosystem. The aim is to combine innovation with implementation and to support measurable impact through real-world projects.

Within the SIERA Water is a key focus area within the platform. The disciplines officially highlighted include:

• Groundwater management
• Surface water management
• Hydraulic engineering and flood protection
• Urban water management

By bringing together specialist engineering firms and interdisciplinary expertise, this enables SIERA Integrated solutions for complex environmental challenges.

For clients, this means access not only to technical expertise, but also to a broader ecosystem capable of taking a holistic and interconnected view of water, infrastructure, environmental protection and resilience.

A shared vision for better water systems

The Aspelflötte project in Bottrop is rooted in the local community, yet at the same time embodies a broader vision for the future development of water systems in Europe: cleaner waters, greater ecological resilience and an infrastructure that serves both society and nature.

This project demonstrates how targeted engineering measures can help to:

• to improve water quality in the long term
• To restore landscapes and habitats
• to create a safer and more efficient water infrastructure
• to support sustainable regional development
• to achieve better outcomes for society and the environment

It is a practical example of what is possible when hydraulic engineering is seen not merely as a technical task, but as an opportunity to bring about lasting positive change.

Outlook

The transformation of the Emscher region demonstrates what is possible when long-term planning, engineering expertise and environmental standards come together. By separating polluted effluent from natural watercourses, projects such as this help to restore ecological processes, enhance public spaces and support a more resilient future.

For local authorities, utility companies, infrastructure operators and project developers, the conclusion is clear: modern water infrastructure can achieve far more than simply meeting regulatory requirements. It can become a foundation for regeneration, resilience and sustainable growth.

Are you looking for a partner for sustainable hydraulic engineering?

Whether your project involves watercourse restoration, hydraulic engineering structures, flood protection, heavy rainfall management, ecological hydraulic engineering or digital planning using BIM – working with the right specialists makes all the difference.

With expertise in the fields of hydrological and hydraulic modelling, infrastructure planning, ecological hydraulic engineering, the refurbishment of hydraulic structures and construction supervision, we support M&P Water and SIERA his clients in this. As part of the wider SIERA Ecosystem connects M&P Water Specialised engineering expertise combined with the strength of a more comprehensive environmental platform.

• Discover M&P Water and his achievements
• Find out more about the SIERA An approach to environmental engineering
• Develop water solutions that are resilient, responsible and sustainable

Take action todayContact us Get started and turn your next water project into a sustainable initiative with a long-term environmental impact.

Engineering for a Better Tomorrow.