Groundwater Management in Agricultural Systems

Groundwater underpins a significant proportion of global food production, supplying reliable irrigation where surface water is scarce or seasonal. Intensive abstraction for crop irrigation has led to widespread aquifer depletion, land subsidence and deteriorating water quality. Effective management requires balancing water extraction with natural recharge rates, improving irrigation efficiency and integrating alternative water sources. Advances in measurement—ranging from in situ monitoring networks to satellite‐based estimations—have enhanced understanding of spatial and temporal patterns of groundwater use. Socio‐institutional arrangements, including stakeholder‐driven conservation zones and regulatory limits, have emerged to curb overexploitation. At the same time, climate change and energy considerations are reshaping priorities: pump electrification and grid decarbonisation can reduce greenhouse gas emissions associated with groundwater pumping, while changing precipitation regimes affect recharge. The field increasingly embraces interdisciplinary approaches—combining hydrology, agronomy, economics and data science—to optimise water allocation, improve crop yields and sustain aquifer resilience over decadal timescales.

Research from Nature Portfolio

Recent studies have quantified the carbon footprint of groundwater pumping for irrigation, revealing that nationwide reductions in electrical grid emissions could halve associated greenhouse gas emissions by mid‐century. Spatial variation in emissions is linked to regional irrigation intensity, pump fuel types and grid carbon intensity, highlighting targeted opportunities for emission mitigation through pump electrification. In parallel, economic analyses of maize and soybean irrigation across the United States indicate that by 2050 the expansion of irrigation will deliver net benefits over costs in much larger cropland areas. These assessments account for future climate scenarios, water availability uncertainties and equipment expenses, emphasising the need to align local water‐use policies with evolving demands to ensure that irrigation remains both economically viable and groundwater‐sustainable.

Groundwater Management in Agricultural Systems publication trend

The graph below shows the total number of articles in groundwater management in agricultural systems across all publications each year (not limited to Nature Index journals).

Technical terms

Aquifer: A geological formation that stores and transmits groundwater.

Specific yield: The volume of water released from an aquifer per unit decline in water table.

Evapotranspiration: The combined loss of water by evaporation from soil and transpiration by plants.

Conjunctive use: Integrated management of surface water and groundwater to optimise overall water supply.

Irrigation efficiency: The ratio of water beneficially used by crops to the total water withdrawn for irrigation.

References

1. Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy. Nature Communications (2024).
2. Irrigation benefits outweigh costs in more US croplands by mid-century. Communications Earth & Environment (2023).
3. Are we saving water? Simple methods for assessing the effectiveness of groundwater conservation measures. Agricultural Water Management (2023).
4. Quantifying irrigation adaptation strategies in response to stakeholder-driven groundwater management in the US High Plains Aquifer. Environmental Research Letters (2019).
5. Groundwater Withdrawal Prediction Using Integrated Multitemporal Remote Sensing Data Sets and Machine Learning. Water Resources Research (2020).
6. Assessing landscape scale heterogeneity in irrigation water use with remote sensing and in situ monitoring. Environmental Research Letters (2019).