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18-Geol-A2 Hydrogeology: May 2014

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

  1. Question 1 Unconfined Transmissivity, Soil Index Properties and a Landfill Aquitard
  2. Question 2 Layered Aquitard Conductivities and a Density-Driven Flow Direction
  3. Question 3 Confined-Aquifer Water Supply and a Three-Point Flow-Net Problem
  4. Question 4 Unconfined Well Hydraulics and Seepage Through an Earthen Dam
  5. Question 5 Transient Drawdown — Stepped Pumping, a River Boundary and a Leaky Aquitard
  6. Question 6 Storage, Boundary Effects, Velocity Measurement and Field Test Selection

Start with Question 1 →

National Exams — May 2014 — 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. All six printed questions are solved below for completeness.

Reference texts: Freeze & Cherry, Groundwater (Prentice-Hall, 1979) — Darcy's law, the Theis and Thiem well equations, leaky-aquifer (Hantush-Jacob) theory, image-well boundary methods, and density-dependent flow; Todd & Mays, Groundwater Hydrology — unconfined-well hydraulics and dam-seepage (Dupuit-Forchheimer) solutions; EGBC Geoscience Professional Practice Guidelines for assumption-disclosure conventions on open-book calculations.