CEIE 340 Lecture 6 Subsurface Hydrology

CEIE 340 Lecture 6 Subsurface Hydrology - Subsurface...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Water Resource Engineering CEIE 340 Sayedul H. Choudhury, Ph.D. Subsurface Hydrology Today’s Topics s Introduction s Groundwater: A Component of Hydrologic Cycle s Hydrologic Classification s Darcy’s Law s Hydraulic Conductivity s Groundwater Velocities s Hydraulics of Wells: Steady State s Unidirectional Flow: Confined and Unconfined Aquifers s Radial Flow: Confined and Unconfined Aquifers s Hydraulics of Wells: Unsteady Flow s Theis Method s Jacob’s Straight-Line Method
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Today’s Topics (Cont’d) s Groundwater Management s Safe Yield s Determination of Safe Yield s Pumping Rate versus Drawdown Plot Method (not in the text book, by McCuen) s Zero-fluctuation Method s The Average-Draft Method s The Simplified Water-Balance Method Hydrologic Cycle Groundwater Flow
Background image of page 2
3 Definitions s Saturated/unsaturated zone s Unsaturated zone: root zone, gravitational zone and capillary zone s Water Table: Water at atmospheric pressure s Confined and Unconfined Aquifers s Zone of depression s Artesian Well s Piezometric surface Hydrologic Cycle: Groundwater Components Source: McCuen (2004)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Hydrologic Cycle: Groundwater Components Capillary Rise in a Tube Source: Domenico and Schwartz (1992)
Background image of page 4
5 Darcy’s Law s Henry Darcy, a French engineer, established that the flow of water through a permeable medium is proportional to the distance between the top and the bottom media layer/soil column s Darcy’s law provides an accurate description of groundwater flow s Darcy’s law is based on the assumption that the flow through porous is laminar Schematic of Darcy’s Apparatus Velocity Head Pressure Head Elevation Head Elevation Head Pressure Head Velocity Head Head Loss, h L Porous Medium Cross-sectional Area, A Total Head Section 1 Section 2 Datum Flow, Q
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/11/2009 for the course CEIE 340 taught by Professor Choudhury during the Spring '09 term at George Mason.

Page1 / 14

CEIE 340 Lecture 6 Subsurface Hydrology - Subsurface...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online