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Asynchronous Regime Shifts in Groundwater Pumping in the High Plains Aquifer, 1960–2020


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Created: May 12, 2026 at 7:17 p.m. (UTC)
Last updated: May 16, 2026 at 8:46 p.m. (UTC) (Metadata update)
Published date: May 16, 2026 at 8:46 p.m. (UTC)
DOI: 10.4211/hs.9067ac2d076d486ea2c9cb78898155d9
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Sharing Status: Published
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Abstract

Groundwater pumping in agricultural aquifers reflects both hydroclimatic conditions and anthropogenic controls, but their relative importance can change over time. We analyzed annual pumping in the High Plains Aquifer Hydrologic Observatory Area (HPAHOA) from 1960 to 2020 using Deep Temporal Clustering, Bayesian changepoint detection, regime-aware XGBoost, and SHAP attribution. Approximately 13,000 cell-level pumping trajectories separated into three behavioral clusters, with asynchronous changepoints in 1974, 2000, and 2005. Models trained only on pre-changepoint data transferred poorly to post-changepoint periods, while models including post-changepoint information showed the greatest improvement in Cluster 3, indicating regime-dependent predictor–response relationships. SHAP attribution showed that dominant predictors differed across clusters and between full-record and changepoint-year conditions: anthropogenic predictors were more influential in Clusters 1 and 2, whereas precipitation was more influential in Cluster 3. These results show that pumping nonstationarity across the HPAHOA is spatially heterogeneous, asynchronous, and regime-dependent.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
High Plains Aquifer Hydrologic Observatory Area (HPAHOA)
North Latitude
41.0000°
East Longitude
-98.0000°
South Latitude
39.0000°
West Longitude
-104.0000°

Temporal

Start Date:
End Date:

Content

How to Cite

Xu, Z., Y. Hu, S. Xi, Z. Fu (2026). Asynchronous Regime Shifts in Groundwater Pumping in the High Plains Aquifer, 1960–2020, HydroShare, https://doi.org/10.4211/hs.9067ac2d076d486ea2c9cb78898155d9

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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