Groundwater storage variability and annual recharge using well-hydrograph and GRACE satellite data

Henry, Chris M.; Allen, D. M.; Huang, Jianliang

doi:10.1007/s10040-011-0724-3

Cited by 69 publications

(75 citation statements)

References 36 publications

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“…Many studies have compared changes in groundwater storage obtained from GRACE data with in situ data for validating the accuracy of GRACE data at either regional or continental scales (Henry et al, 2011;Leblanc et al, 2009;Rodell et al, 2009Rodell et al, , 2007Scanlon et al, 2012a, b;Syed et al, 2009).…”

Section: Gravity Recovery and Climate Experiments (Grace) For Detectinmentioning

confidence: 99%

Groundwater-dependent ecosystems: recent insights from satellite and field-based studies

Eamus

Zolfaghar

Villalobos‐Vega

et al. 2015

Hydrol. Earth Syst. Sci.

132

112

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Abstract. Groundwater-dependent ecosystems (GDEs) are at risk globally due to unsustainable levels of groundwater extraction, especially in arid and semi-arid regions. In this review, we examine recent developments in the ecohydrology of GDEs with a focus on three knowledge gaps: (1) how do we locate GDEs, (2) how much water is transpired from shallow aquifers by GDEs and (3) what are the responses of GDEs to excessive groundwater extraction? The answers to these questions will determine water allocations that are required to sustain functioning of GDEs and to guide regulations on groundwater extraction to avoid negative impacts on GDEs.We discuss three methods for identifying GDEs: (1) techniques relying on remotely sensed information; (2) fluctuations in depth-to-groundwater that are associated with diurnal variations in transpiration; and (3) stable isotope analysis of water sources in the transpiration stream.We then discuss several methods for estimating rates of GW use, including direct measurement using sapflux or eddy covariance technologies, estimation of a climate wetness index within a Budyko framework, spatial distribution of evapotranspiration (ET) using remote sensing, groundwater modelling and stable isotopes. Remote sensing methods often rely on direct measurements to calibrate the relationship between vegetation indices and ET. ET from GDEs is also determined using hydrologic models of varying complexity, from the White method to fully coupled, variable saturation models. Combinations of methods are typically employed to obtain clearer insight into the components of groundwater discharge in GDEs, such as the proportional importance of transpiration versus evaporation (e.g. using stable isotopes) or from groundwater versus rainwater sources.Groundwater extraction can have severe consequences for the structure and function of GDEs. In the most extreme cases, phreatophytes experience crown dieback and death following groundwater drawdown. We provide a brief review of two case studies of the impacts of GW extraction and then provide an ecosystem-scale, multiple trait, integrated metric of the impact of differences in groundwater depth on the structure and function of eucalypt forests growing along a natural gradient in depth-to-groundwater. We conclude with a discussion of a depth-to-groundwater threshold in this mesic GDE. Beyond this threshold, significant changes occur in ecosystem structure and function.

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Section: Gravity Recovery and Climate Experiments (Grace) For Detectinmentioning

confidence: 99%

Groundwater-dependent ecosystems: recent insights from satellite and field-based studies

Eamus

Zolfaghar

Villalobos‐Vega

et al. 2015

Hydrol. Earth Syst. Sci.

132

112

View full text Add to dashboard Cite

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“…Changes in storage can be obtained from gravitational satellites such as the Gravity Recovery and Climate Experiment (GRACE) (e.g. Frappart et al, 2011;Henry et al, 2011). While this new source of data is appealing, the accuracy of GRACE data is to be improved to make it reliable for monitoring groundwater changes at the basin scale (e.g.…”

Section: Groundwater Storagementioning

confidence: 99%

Basin-wide water accounting based on remote sensing data: an application for the Indus Basin

Karimi

Bastiaanssen

Molden

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. The paper demonstrates the application of a new water accounting plus (WA+) framework to produce information on depletion of water resources, storage change, and land and water productivity in the Indus basin. It shows how satellite-derived estimates of land use, rainfall, evaporation (E), transpiration (T ), interception (I ) and biomass production can be used in addition to measured basin outflow, for water accounting with WA+. It is demonstrated how the accounting results can be interpreted to identify existing issues and examine solutions for the future. The results for one selected year (2007) showed that total annual water depletion in the basin (501 km 3 ) plus outflows (21 km 3 ) exceeded total precipitation (482 km 3 ). The water storage systems that were effected are groundwater storage (30 km 3 ), surface water storage (9 km 3 ), and glaciers and snow storage (2 km 3 ). Evapotranspiration of rainfall or "landscape ET" was 344 km 3 (69 % of total depletion). "Incremental ET" due to utilized flow was 157 km 3 (31 % of total depletion). Agriculture depleted 297 km 3 , or 59 % of the total depletion, of which 85 % (254 km 3 ) was through irrigated agriculture and the remaining 15 % (44 km 3 ) through rainfed systems. Due to excessive soil evaporation in agricultural areas, half of all water depletion in the basin was non-beneficial. Based on the results of this accounting exercise loss of storage, low beneficial depletion, and low land and water productivity were identified as the main water resources management issues. Future scenarios to address these issues were chosen and their impacts on the Indus Basin water accounts were tested using the new WA+ framework.

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“…Numerous studies on the reliability of its data sets has been carried out by comparing its TWS products to that of Land Surface Models or in situ land observations-India [31], the Korean Peninsula [33,34], the East African lakes [25], Mali in Africa [35]. It has also been widely used in the studies of lakes around the world [36][37][38][39].…”

Section: Terrestrial Water Storage (Tws) From Gracementioning

confidence: 99%

Hydrological Evaluation of Lake Chad Basin Using Space Borne and Hydrological Model Observations

Buma

Seo

2016

Water

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Sustainable water resource management requires the assessment of hydrological changes in response to climate fluctuations and anthropogenic activities in any given area. A quantitative estimation of water balance entities is important to understand the variations within a basin. Water resources in remote areas with little infrastructure and technological knowhow suffer from poor documentation, rendering water management difficult and unreliable. This study analyzes the changes in the hydrological behavior of the Lake Chad basin with extreme climatic and environmental conditions that hinder the collection of field observations. Total water storage (TWS) from the Gravity Recovery and Climate Experiment (GRACE), lake level variations from satellite altimetry, and water fluxes and soil moisture from Global Land Data Assimilation System (GLDAS) were used to study the spatiotemporal variability of the hydrological parameters of the Lake Chad basin. The estimated TWS varies in a similar pattern as the lake water level. TWS in the basin area is governed by the lake's surface water. The subsurface water volume changes were derived by combining the altimetric lake volume with the TWS over the drainage basin. The results were compared with groundwater outputs from WaterGAP Global Hydrology Model (WGHM), with both showing a somewhat similar pattern. These results could provide an insight to the availability of water resources in the Lake Chad basin for current and future management purposes.

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Groundwater storage variability and annual recharge using well-hydrograph and GRACE satellite data

Cited by 69 publications

References 36 publications

Groundwater-dependent ecosystems: recent insights from satellite and field-based studies

Groundwater-dependent ecosystems: recent insights from satellite and field-based studies

Basin-wide water accounting based on remote sensing data: an application for the Indus Basin

Hydrological Evaluation of Lake Chad Basin Using Space Borne and Hydrological Model Observations

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