Sample groundwater assessment

Anonymized North Texas example

Sample report: Property and well identifiers have been removed. This anonymized example uses the same layout and graphics as a completed customer report. Start an assessment

Homeowner summary

Estimated groundwater depth
About 120 ft below ground

Based on aquifer-specific repeated TWDB Groundwater Database records near the selected property.

Model range for the neighborhood average
115-130 ft below ground

This is uncertainty in the modeled neighborhood groundwater surface, not the expected range of every well reading.

Pump check
About 80 ft of water above the pump

Across the model range for the neighborhood average, the resting water level remains about 70-85 ft above the reported pump.

Data snapshot built
August 30, 2026

TWDB records, monitoring histories, and statewide aquifer boundaries.

Water column above the pump

Estimated resting water level compared with the pump, screen, and total depth reported in the confirmed property well log.

Ground surface · 0 ftEstimated level 120 ftModel range 115-130 ftScreen 160-240 ftPump 200 ft80 ft water columnTotal depth 240 ft
Estimated static water column above the pump: 80 ft (approximately 70-85 ft across the model range for the neighborhood average). Pumping drawdown and seasonal extremes are not included.

Selected well log

The construction record is supporting evidence for the statewide aquifer model.

Tracking number
Anonymized
Completion date
2019-07-26
Reported static level
110 ft
Pump depth
200 ft
Screen interval
160-240 ft
Total depth
240 ft
Estimated groundwater depth
120 ft
feet below ground
Aquifer evidence wells
12
nearest repeated series shown
Publishable measurements
414
2015-2026
Model range
115-130 ft
neighborhood average

Water-level measurements over time

Annual medians from Paluxy Sand monitoring wells. Choose which records to compare.

View monitoring-history data table

Does the trend change when different wells are used?

The main estimate uses gradual distance, depth, duration, and quality weights. These fixed search boundaries are stress tests and are not expected to reproduce the main value exactly.

Similar supported boxes indicate a more stable conclusion. Green boxes have at least 10 usable monitoring wells, tan boxes have 3-9, and gray boxes are insufficient.
Main continuously weighted model

First water reported while drilling

Reported or interpreted water-bearing strata from nearby well logs in the Paluxy Sand depth context. This drilling evidence is not a resting static-water level.

View initial-water data table

How much evidence supports this estimate?

This quality assessment is not a probability. Repeated aquifer-specific measurements and validation residuals are the clearest available checks.

Estimated groundwater depth: about 120 ft below ground.

Strong aquifer-specific repeated monitoring evidence. Mean absolute residual: 6.4 ft.

Strong

Nearby well coverage

12 repeated-measurement wells support the neighborhood estimate.

Limited

Individual well-log quality

Driller reports are optional supporting evidence and receive less weight than repeated monitoring histories.

Strong

Water-level history

414 publishable measurements are available for the selected aquifer context.

Screening

Parcel-scale certainty

Regional aquifer maps and public records cannot prove conditions at a specific drilling point.

Evidence map

Selected property, repeated GWDB monitoring wells, and TWDB major/minor aquifer context.

Monitoring wells used by this report

Nearest repeated TWDB Groundwater Database records for the selected aquifer.

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