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TeachMeFinance.com - explain Hydraulic head Hydraulic head The term 'Hydraulic head' as it applies to the area of the weather can be defined as ' In hydrologic terms, (1) The height of the free surface of a body of water above a given point beneath the surface. (2) The height of the water level at the headworks, or an upstream point, of a waterway, and the water surface at a given point downstream. (3) The height of a hydraulic grade line above the center line of a pressure pipe, at a given point'. The term 'Hydraulic head' as it applies to the area of energy can be defined as ' The distance between the respective elevations of the upstream water surface (headwater) above and the downstream surface water (tailwater) below a hydroelectric power plant'. Previous 5 Terms: Hydraulic fill structure Hydraulic Flow Hydraulic fracturing Hydraulic Grade Line Hydraulic grade line (HGL) (Hydraulic gradient) Next 5 Terms: Hydraulic height Hydraulic Jump Hydraulic Permeability hydraulic shovel Hydraulics About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.