Water-filled ditch among meadows. Photo.
Photo: Mike Peacock.

What is actually a ditch?

News published:  09/09/2025

Ditches are found everywhere, and humanity needs them. Yet they are often ignored, both in land management and in research. But what does it mean when we disregard them? Could it have consequences?

Many researchers ignore ditches and channels because they are small and seemingly insignificant. In reality, however, they play an important role – for different cycles, for ecology, for archaeology, for cultural geography, and for physical science.

The definition of a ditch turns out to be far from straightforward.

Most often a ditch is defined as “narrow linear channels on Earth’s surface constructed to store and/or move water." But the definition varies between countries, regions and cultures, says researcher Mike Peacock.

want to get people to notice ditches, both the “good” and the “bad” that ditches bring with them.

According to Mike, it is clear that a ditch has negative or positive effects depends on who you are:

A land manager would probably say that a ditch is beneficial because it improves the land so that it can be cultivated. A researcher, on the other hand, might point to the negative effects – for instance, that ditches can act as pathways for pollutants.

Ditches contribute to so many different ecosystem services that it is simply impossible to claim they are wholly one thing or the other. The reality is more complex.

Humanity needs ditches. Without them we would not be able to produce as much food, and and our forests rely on them for their productivity. But in general, we could take better care of our ditches.

“If we think more carefully about how they are managed and maintained, they could perhaps continue to serve their original function of regulating water flows, while at the same time providing benefits for other purposes, such as supporting biodiversity” Mike concludes.

Read the study

Lines in the landscape

Co-authors from SLU

Magdalena Bieroza, Department of Soil and Environment

Peta Zivec, Department of Forest Ecology and Management

Eliza Maher Hasselquist, Department of Forest Ecology and Management

Mike Peacock, Department of Aquatic Sciences and Assessment

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