AIH Fundamentals of Hydrology Examination study guide
AIH Fundamentals of Hydrology Examination · Work through your exam, one topic at a time.
The AIH Fundamental Exam is an entry-level hydrology examination offered by the American Institute of Hydrology (AIH), a non-profit scientific and educational organization founded in 1981 and incorporated in Minnesota on March 3, 1981. AIH describes its examinations as focusing exclusively on knowledge and understanding of hydrology, testing expertise in the fundamentals, surface water, and groundwater. The Fundamental Exam sits alongside AIH's other certification pathways - the Professional Hydrologist (PH) Exam for experienced professionals, the Hydrologist-in-Training (HIT) Exam for emerging professionals, and the Hydrologic Technician (HT) Exam for those with hands-on field experience. AIH's stated purpose includes establishing standards and procedures to certify individuals qualified to practice hydrology in surface water, groundwater, and water quality, and providing education and training in hydrology. The AIH Fundamentals of Hydrology Examination study guide has 3 sections and about 915 words.
01Fundamentals of Hydrology: The Water Balance and the Processes That Shape It
Nearly every question in this domain traces back to the catchment water balance: P = ET + Q + ΔS (precipitation equals evapotranspiration plus streamflow plus change in storage, with ΔS positive when storage rises). Learn the terms, their typical magnitudes, and how each is measured, and most distractors become visible.
309 words, about 2 min02Surface Water: Hydrographs, Routing, and Flow Measurement
Surface-water questions test whether you can read a hydrograph and connect it to watershed characteristics and channel hydraulics. The hydrograph is the central object: its peak, timing, and volume each respond differently to storm and basin properties.
307 words, about 2 min03Groundwater: Aquifers, Hydraulic Head, and Darcy's Law
Groundwater questions center on hydraulic head and Darcy's law : flow moves from high head to low head, and discharge is proportional to hydraulic gradient and conductivity. Master head, gradient, conductivity, and storage, and most items resolve.
299 words, about 1 min