Estimating Groundwater Recharge
Estimating Groundwater Recharge

Author: Richard W. Healy

Publisher: Cambridge University Press

Published: 2010-09-30

Total Pages:

ISBN-13: 1139491393

DOWNLOAD EBOOK

Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Detailed explanations of the methods are provided - allowing readers to apply many of the techniques themselves without needing to consult additional references. Numerous practical examples highlight benefits and limitations of each method. Approximately 900 references allow advanced practitioners to pursue additional information on any method. For the first time, theoretical and practical considerations for selecting and applying methods for estimating groundwater recharge are covered in a single volume with uniform presentation. Hydrogeologists, water-resource specialists, civil and agricultural engineers, earth and environmental scientists and agronomists will benefit from this informative and practical book. It can serve as the primary text for a graduate-level course on groundwater recharge or as an adjunct text for courses on groundwater hydrology or hydrogeology. For the benefit of students and instructors, problem sets of varying difficulty are available at http://wwwbrr.cr.usgs.gov/projects/GW_Unsat/Recharge_Book/

Application of Two-dimensional Hydraulic Modeling in Riverine Systems Using HEC-RAS
Application of Two-dimensional Hydraulic Modeling in Riverine Systems Using HEC-RAS

Author: Abdulaziz Saeed Alzahrani

Publisher:

Published: 2017

Total Pages: 83

ISBN-13:

DOWNLOAD EBOOK

Flood simulation models have a wide variety of approaches that are available to compute the water surface elevations associated with a flood event. Some of these models use a One-dimensional (1D) approach, others use a Two-dimensional (2D), and there are others allow the use of integrated 1D and 2D simulations. In 2015, the US Army Corps of Engineering Hydrologic Engineering Center (HEC) released HEC-RAS Version 5.0.3 which performs 1D steady and unsteady flow calculation, as well as 2D unsteady flow calculation. 2D modeling is likely to become more common due to HEC-RAS. This paper is the comparison of 1D and 2D models for a water level in the channel and the floodplain inundation. Two treatments of the problem are explored: (1) a 1D model based upon discretization of floodplain units into storage areas; (2) a 2D model for a channel and a floodplain surface. The two models were tested on the Great Miami River and Bear Creek. The models were assessed by comparison with measured inundation extent. Also, the study reviews the academic basis for modeling floodplain flow based on a two-dimensional analysis. The goal of the proposed research effort will be to include the application of 2D unsteady-state models in future releases of the HEC-RAS 2D model.

Ancient Floods, Modern Hazards
Ancient Floods, Modern Hazards

Author: P. Kyle House

Publisher: American Geophysical Union

Published: 2002-01-21

Total Pages: 402

ISBN-13:

DOWNLOAD EBOOK

CD-ROM contains figures and data from selected papers, to allow for ancillary information and supplementary images that could not otherwise be included in the text.