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Wetstone Solutions

Wetstone Solutions

Hydrogeology expert witness

With over 40 years of hydrogeology and expert-facing work behind our practice, we connect stratigraphy, heads, and chemistry—from capture zones to commingled plumes—to opinions that are clear, bounded, and tied to what was actually measured at your site.

Locked steel groundwater monitoring well and coiled sampling tubing on a concrete pad in a grass field.
A monitoring well and sampling gear—the field control a conceptual model has to honor.

At a glance

Wetstone Solutions serves as a hydrogeology expert witness—explaining groundwater flow, contaminant pathways, monitoring programs, and numerical models so judges and juries can follow the science.

What the work looks like

Groundwater contour map with potentiometric surface, flow directions, and monitoring locations for hydrogeologic analysis.
Potentiometric contours, flow paths, and monitoring context—defensible hydrogeology for RI/FS, remedies, and litigation.
Three-dimensional subsurface fence diagram with CPT borings, stratigraphy, and semi-transparent contaminant plume volumes in blue, green, yellow, and red.
3D fence model tying CPT locations, stratigraphy, and plume geometry—typical of integrated site characterization and fate-and-transport communication.

Who this is for

Counsel who need a hydrogeologist expert witness for groundwater flow, pathway and timing questions, well interference, remedy reasonableness, or challenges to another expert’s model. A search for a hydrology expert witness, or a hydrologist expert witness, usually means this work when the question is groundwater. Surface-water hydrology is a different assignment, and we do not take it.

Methodology

We anchor every step in the boring logs, testing, and monitoring record; stress-test the conceptual model; and document modeling choices, calibration, and limitations. Opinions follow the data—not the storyline.

Deliverables

  • Expert reports and expert disclosures
  • Model documentation and calibration memos
  • Deposition and trial testimony
  • Joint technical meetings and hot-tub preparation support

From the insights

Licensed states

Wetstone maintains professional geologist licensure in five states. Engagement still depends on scope, conflicts, and the rules that apply to the work.

Frequently asked questions

What qualifications matter for a hydrogeologist expert witness?
Typical qualifications include relevant education, professional licensure where applicable (for example, PG), depth of project experience, and a documented record of defensible methods and clear communication under scrutiny.
Will you review another expert’s groundwater model?
Yes. Model review often focuses on conceptual model assumptions, calibration targets, parameter plausibility, sensitivity, and whether predictions are supported by site data.
Do you provide opinions on source timing or allocation?
When data support it, we evaluate hydrogeologic lines of evidence relevant to timing and commingling. Complex allocation may also require geochemistry and fate and transport analysis in tandem.
How should counsel initiate an expert engagement?
Start with a short technical overview and conflict check, then define deliverables, schedule, records access, and reporting format. Early alignment on scope reduces rework.
Do you serve as a hydrology expert witness?
When the question is groundwater—flow, pathways, wells, or a model—counsel searching for a hydrology expert witness or a hydrologist expert witness are looking for a hydrogeologist. That is this practice. Surface-water hydrology, flood routing, and watershed yield are a different discipline, and we do not take those assignments.

Next step: a focused conversation

Share the site, the technical issue, and your timeline. We run a conflict check and respond with whether we can help and how soon.