PPT-CE 374K Hydrology Lecture 5: Precipitation

Precipitation mechanisms Rainall maps Rainfall hyetographs Nexrad measurement of rainfall Reading for today Applied Hydrology Sec 33 and 34 Reading for Thursday Applied Hydrology Sec 35 and 36. Syllabus, sequence of topics. Hydrology as a science and as a profession. Hydrologic cycle and world water balance. Water as a physical substance. Case study of Brushy Creek watershed . Readings: . For today – Applied Hydrology and Chapter 1. The . term . hydrology.  is from Greek:  . hydōr. , "water"; . and,.  . logos. , "study".. noun. . the.  science dealing with the . occurrence, circulation, distribution, and . properties. Frequency Factors. Frequency Analysis using Frequency Factors. The . magnitude of an extreme event . can be thought of as a departure from the mean expressed as a number of standard deviations. The . Hydrologic Systems. Setting the context in Brushy Creek. Hydrologic systems and hydrologic models. Reynolds Transport Theorem. Continuity equation. Reading for next Tuesday – Applied Hydrology, Sections 2.3 to 2.8. A science dealing with the properties, distribution and circulation of water.. David Tarboton. http://www.engineering.usu.edu/dtarb/. dtarb@usu.edu. CEE6400 Physical Hydrology . http://www.engineering.usu.edu/dtarb/cee6400. Radial flow to a confined aquifer. From Mays, 2011, Ground and Surface Water Hydrology.  .  . Examine how much the . piezometric. surface is drawn down by pumping from a well penetrating a confined aquifer. From Mays, 2011, Ground and Surface Water Hydrology. Continuity. Moisture Content . . Suction head -|. |.  . Darcy.  . Example 3.7.1. Determine the vertical flux for a soil in which the unsaturated hydraulic conductivity is expressed as a function of the suction head as K=250(. Crown King. May Average: 0.30”. June Average: 0.26”. July Average: 3.44”. August. . Average: . 3.34”. Crown King 2016 . (. 86. % . of . average. ). May: 1.20”. June: 0.36”. July: 1.60”. VOLUME 7 1999Volume 7 Paper 19 November 1999 1 GROUNDWATER MANAGEMENT PERSPECTIVES FORBORNO AND YOBE STATES, NIGERIA Groundwater is the predominant source of water supply and over 2,000 boreho Artificial rain making.. Process of Precipitation:. Precipitation is caused by condensation of water . vapours. of the air mass. . The ascending air mass with sufficient amount of water . vapours. becomes saturated due to adiabatic cooling. Condensation of water . Runoff. Streamflow. Generation. Excess Rainfall and Direct Runoff. SCS Method for runoff amount. Examples from Brushy Creek. Reading for today: Applied Hydrology sections 5.1 to 5.6. Reading for Tuesday Feb 19: Applied Hydrology Sections 5.7 and 5.8, Chapter 6. LECTURE 1. REFERENCE BOOKS. Awan . N. . M, . Surface Water Hydrology (Vol-1), National Book Foundation, Islamabad Pakistan.. Chow . Ven. . Te. , David R. . Maidment. , Larry W. . Mays, . Applied Hydrology, McGraw Hill Book International Edition.. February 15, 2011. Hydrology as a Science. “. Hydrology is the science that treats the waters of the earth, their occurrence, circulation and distribution, their chemical and physical properties, and their reaction with their environment, including their relation to living things. The domain of hydrology embraces the full life history of water on the earth. April 14, 2011. Hortonian Flow. Sheet flow described by Horton in 1930s. When . i. <. f. , all . i. is absorbed . When . i. > . f. , (. i-f. ) results in rainfall excess. Applicable in . impervious surfaces (urban areas).