Chapter 02 · Nature, land & waterWater, Waste & Pollution
Catchment
Definition
A catchment is the land area from which rainfall and surface water drain into a common river, lake, aquifer or other water body.
References
This reference provides supporting context for how “Catchment” is defined and used.
Overview
What it means in practice
Catchment should be read as a water, waste or pollution term. Its meaning depends on the location, watershed, measurement method, discharge route and time period.
In practice, users should state the boundary, location, baseline and evidence source. That keeps catchment specific enough for review without overstating certainty.
Why it matters
Catchment matters because water language is highly local: the same volume or discharge can have different significance depending on basin stress, quality, season and users. Clear boundaries make the term useful for decisions.
Common misconception
A common error is to use Catchment without naming the source, basin, quality parameter or timeframe. Those details often determine whether the claim is meaningful.
Review questions
What place, boundary or baseline gives the term meaning? What evidence supports it? What uncertainty or limitation would change the reader's interpretation?
How it is used
Designers, manufacturers, procurement teams, life-cycle practitioners and waste managers use “Catchment” in product design, procurement, footprinting, material selection, production and end-of-life decisions.
In each case, the user should state the product system, life-cycle stages, functional unit, geography, timeframe and measurement method; otherwise, the same term may be applied to materially different situations. In this context, it refers to the land area from which rainfall and surface water drain into a common river, lake, aquifer or other water body.