Keyline and water on the farm

Make the rain work for the farm: infiltrate it, slow the runoff and spread moisture where it’s needed. No magic: a proper reading of the land and a plan you can carry out.

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Water The furrow that drinks the rain The subsoiler opens a line in the stubble. Water enters the soil instead of running downhill. That is water harvesting: rain stays where it falls.

Water So the profile can drink The furrow guides the rain. If the clod is sealed, water can’t get in and keeps running downhill. Keyline aims to infiltrate and spread water; it isn’t free irrigation, and we give no figures for millimetres retained.

Keyline The tractor and the lines The tractor traces the keylines across the land.

Why it matters here

Mediterranean climate: water comes in bursts

Wherever the climate is Mediterranean, soil regeneration hits a hard limit: drought, concentrated storms and soils that don’t infiltrate. You can improve biology and cover, but if water runs off downhill or never gets in, the farm stays fragile. Without water in the profile, soil life stalls and organic matter doesn’t build up.

That’s why the True Regenerative method treats water as a pillar in its own right, alongside bio-inputs, the biofactory and measurement, rather than as an extra in the “regenerative package”.

World context

How much freshwater farming takes

Agriculture is the biggest user of fresh water. The bar shows that global share, not the use of any one farm.

FAO, SOLAW 2025. Agriculture accounts for more than 70% of global freshwater withdrawal.

Around half the world’s population faces severe water scarcity for at least part of the year. Around the Mediterranean, water comes in bursts. No design puts an end to drought.

IPCC, Synthesis Report, 2023.

We work worldwide from La Palma de Cervelló (Barcelona).

Keyline · at a glance

What keyline is (and isn’t)

Reading the landform

Understanding ridges, valleys and the “keyline” to guide water through the landscape, without copying a design from another continent. Indicator plants help: they show where it waterlogs and where it dries out.

Infiltration and retention

Soil work, cover, lines and, where it fits, light earthworks so water gets in and stays longer in the useful profile. A soil with more organic matter and living roots acts like a sponge: the harvested water feeds soil life and the plant.

Integrated design

Water doesn’t stand alone: it fits with crops, access routes, animals and the biofactory. A plan the team can maintain.

What we don’t promise: neither “free irrigation” nor an end to drought. Nor do we publish made-up figures for millimetres retained. The scope (diagnosis, design, support for earthworks or management) is set farm by farm, in line with local regulations and with economic sense.

We cite water-design influences from the regenerative school as a working framework (for example, the approaches associated with Yeomans and Doherty, and field practice). This implies no commercial affiliation or third-party endorsement.

In practice

How it usually starts on a farm

A diagnosis conversation: map, slopes, waterlogging, dry spots, rainfall history and what has already been tried.
Realistic priorities: what can be done this year with the team and machinery available, and what is left for later phases.
Tie-in with living fertility — cover, roots, bio-inputs — so the water that stays feeds biology rather than an empty profile. See regenerative agriculture.
Follow-up: field observation and, when it’s due, soil measurement. See services and cases.

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Next step

Let’s talk about water on your farm

Tell us the location, the crop and what’s happening with water: runoff, drought, irrigation. No published rates.

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