Where operations and safety requirements permit, Willowstick can survey a reservoir in service and interpret preferential conductive connections across the floor, rim, or adjacent structures. Operators receive prioritized pathway targets to test against the water balance, geology, instrumentation, and direct investigation.
Application · Water Retention
Reservoirs
Prioritize where a reservoir may be losing water and the pathways involved.
The Problem
Water is leaving. Where?
Unexplained drawdown can reflect operational losses, evaporation, a liner defect, permeable geology, or channelized seepage. Water balances, piezometers, test pits, and inspections provide essential evidence; geophysical coverage can help connect those observations and prioritize the most likely loss zones.
Full reservoir Surveyed in operating condition
2D + 3D Flow-path models
Operating level Survey where feasible
How Willowstick Maps It
The method, applied to reservoirs.
01
Establish a controlled circuit: electrodes are positioned so a signature alternating current passes through the floor, rim, or structure of interest. Its distribution responds to saturation, pore-water chemistry, clay and mineral content, geology, and other controls on bulk conductivity.
02
Measure the response: the Willowstick instrument records the resulting three-axis magnetic field at georeferenced stations on land or water. The magnetic survey itself does not require exploratory drilling.
03
Model and interpret: measured data are normalized against a homogeneous-earth reference and processed into 2D and 3D electrical-current models. Reservoir geometry, geology, water levels, and operations guide interpretation of preferential conductive connections.
04
Deliver reviewable targets: the report presents mapped anomalies, interpreted pathway targets, model-derived depth ranges where supported, and limitations for planning follow-up or repair.
Proof
Relevant case studies
Start Here
See what’s moving beneath your reservoirs.
Field acquisition is often completed in days and interpretation in weeks. Timing, depth of investigation, and deliverables are scoped to the site, method mix, and decision.