Groundwater
Economic puzzle
An aquifer may recharge, but pumping can exceed recharge for decades. Each pumper can raise the lifting cost or reduce future availability for others, while legal rules determine whose withdrawal is protected.
Question directions
- How do groundwater levels respond to drought, crop prices, or pumping restrictions?
- Would a volumetric fee, pumping quota, tradable permit, or collective district rule better conserve the stock?
- How does surface-water access change groundwater demand?
- Who bears the cost of metering, reduced pumping, or a declining water table?
Model hook
Treat the aquifer as a stock:
S_{t+1}=S_t+R_t-Q_t,
where recharge R_t may be uncertain and pumping cost typically rises as S_t falls. Identify the scarcity rent that an unregulated pumper may ignore.
Official starting evidence
- USGS Water Data for the Nation lets you explore groundwater monitoring locations and download time-series measurements.
- USGS groundwater-level service documentation describes access to historical manually recorded levels.
- State water agencies or irrigation districts may publish well permits, pumping rules, crop patterns, or adjudication records.
Feasible unit of analysis
Start with one aquifer, management district, or set of monitoring wells. Pair water-level trends with a specific institutional or price change rather than treating all groundwater use as one market.
A well level is a local measurement affected by aquifer properties, recent pumping, and measurement timing. Explain why selected wells represent the resource condition you claim to study.