Water Well Hydrographs: An Underutilized Resource for Characterizing Subsurface Conditions

Area of Science:

• Hydrogeology
• Groundwater Management
• Environmental Science

Background:

• Major aquifers worldwide face stress from intensive pumping for agriculture and drinking water.
• Accurate assessment of aquifer response to management and climate change requires better subsurface data.
• Monitoring well networks provide continuous water-level data (hydrographs) crucial for understanding aquifer behavior.

Purpose of the Study:

• To demonstrate the value of hydrograph analysis for extracting critical information about aquifer systems.
• To showcase how hydrographs can inform groundwater management strategies.
• To highlight the importance of accurate water-level measurements in hydrograph interpretation.

Main Methods:

• Analysis of hydrograph data from the High Plains aquifer index well network.
• Interpretation of water-level trends to infer aquifer hydraulic state and extent.
• Examination of hydrograph patterns to understand recharge, pumping influences, and conservation impacts.

Main Results:

• Hydrographs reveal aquifer hydraulic state, lateral extent, and recharge characteristics.
• Analysis demonstrates the connection between wells and pumping stresses.
• Hydrographs can predict aquifer responses to reduced pumping and conservation measures.

Conclusions:

• Hydrograph analysis is an underutilized tool for understanding aquifer dynamics.
• Accurate water-level measurements are essential for reliable hydrograph interpretation.
• Implementing measures to reduce measurement errors can enhance the utility of monitoring well data.