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18-Geol-A2 Hydrogeology: May 2018

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Core-Sample Soil Phase Relations, Anisotropic Darcy Velocity, and Falling-Head Permeameter
  2. Question 2 Layered Confined System — Effective Conductivities, Vertical Flow, and Regional Discharge
  3. Question 3 Confined-Aquifer Drawdown Near a Recharge Boundary, Leaky-Aquitard Response, and Exploration Methods
  4. Question 4 Step-Rate Pump Test Superposition, Two-Well Unconfined Flow, and Areal Recharge
  5. Question 5 Slug Tests — Method Comparison, Bouwer-Rice (Unconfined), and Cooper-Bredehoeft-Papadopulos (Confined)

Start with Question 1 →

National Exams — May 2018 — 04-Geol-A2 Hydrogeology. Three-hour, open-book exam; any non-communicating calculator permitted. Five questions constitute a complete paper and all five are of equal value; most call for an essay-format answer with clarity and organization counted. Unless stated otherwise, water density is taken as 1000 kg/m³, water viscosity as 0.001 kg/m-sec, and g as 9.81 m/s².

Reference texts: Freeze & Cherry, Groundwater (Prentice-Hall, 1979) — Darcy's law and anisotropic conductivity tensors, soil phase relations, permeameter testing, layered-medium effective conductivity, the Theis and Thiem well equations, image-well boundary methods, leaky-aquifer (Hantush-Jacob) theory, the Dupuit-Forchheimer approximation with areal recharge, and slug-test analysis (Hvorslev, Bouwer-Rice, Cooper-Bredehoeft-Papadopulos); Todd & Mays, Groundwater Hydrology — supplementary well-test and unconfined-flow methods; EGBC Geoscience Professional Practice Guidelines for assumption-disclosure conventions on open-book calculations.