authority: gcos
slug: groundwater
name: Groundwater
domain: land
subdomain: hydrosphere
authority_id: gcos:groundwater
external_ids:
  nvs_uri: null
  cf_standard_name: null
  iadopt_concepts:
    property: storage
    entity: groundwater
canonical_units: m
gcos_requirement_tier:
  threshold: null
  breakthrough: null
  goal: null
description: |
  Groundwater levels and storage anomalies from monitoring-well networks
  and GRACE/GRACE-FO terrestrial water-storage retrievals. A first-class
  indicator of sustainable freshwater availability.
theme: hydrology
demos: []
status: documented
sources:
  - https://gcos.wmo.int/site/global-climate-observing-system-gcos/essential-climate-variables/groundwater