Author: R.W.J. LaceyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Application of a 2-dimensional Hydrodynamic Model for the Assessment and Design of Instream Channel Restoration Works
Author: R.W.J. LaceyReview of the New York City Watershed Protection Program
Author: National Academies of Sciences, Engineering, and MedicinePublisher: National Academies Press
ISBN: 0309679702
Category : Science
Languages : en
Pages : 423
Book Description
New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.
River Restoration
Author: Stephen DarbyPublisher: John Wiley & Sons
ISBN: 0470867078
Category : Science
Languages : en
Pages : 328
Book Description
River restoration projects are designed to recreate functional characteristics within a context of physical stability. They tend to focus on the development and application of geomorphic principles for river restoration design. Due to different models obtaining different results on the same problem, incomplete or absent data, and climatic/social/cultural changes, the designers and managers of such projects frequently face high levels of uncertainty. This book will provide a systematic overview of the issues involved in minimizing and coping with uncertainty in river restoration projects. A series of thematic sections will be used to define the various sources of uncertainty in restoration projects and how these show at different points in the life cycle (design, construction and post-construction phases) of restoration projects. The structure of the book will offer a rational theoretical analysis of the problem while providing practical guidance in managing the different sources of uncertainty. A wide range of case studies will be included from Europe, North America and Australasia
Application of a Two-dimensional Model of Hydrodynamics to San Timoteo Creek Flood-control Channel, California
Author: Richard L. StockstillPublisher:
ISBN:
Category : Flood control
Languages : en
Pages : 56
Book Description
Evaluation of Two-dimensional Hydraulic Modeling in a Natural River and Implications in Instream Flow Assessment Methods
Author: Karl L. TarbetPublisher:
ISBN:
Category : Logan River (Utah)
Languages : en
Pages : 156
Book Description
Protection and Restoration of Urban and Rural Streams
Author: Michael L. ClarPublisher:
ISBN:
Category : Nature
Languages : en
Pages : 504
Book Description
This collection contains 48 papers presented at an international symposium on the restoration and protection of streams at the 2003 World Water and Environmental Resources Congress, held in Philadelphia, Pennsylvania, June 23-26, 2003.
Development and Application of a Two-dimensional Hydrodynamic Model for Riverine Floodplain Environments
Author: Stephen Wayne AndrewsPublisher:
ISBN:
Category :
Languages : en
Pages : 360
Book Description
A Novel Framework for Uncertainty Propagation in River Systems Based on Performance Graphs Using Two-dimensional Hydrodynamic Modeling
Author: Christopher H. Gifford-MiearsPublisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 67
Book Description
This thesis presents a novel approach for propagation of uncertainty in river systems. Errors in data observations and predictions (e.g., stream inflows), in model parameters, and resulting from the discretization of continuous systems, all point to the need to accurately quantify the amount of uncertainty carried through the modeling process. In the proposed framework, stochastic processes are incorporated directly into the physical description of the system (e.g., river flow dynamics) with the goal of better modeling uncertainties (both aleatoric and epistemic) and hence, reducing the ranges of the confidence intervals on quantities of interest. We represent uncertainty in stream inflows via an error term modeled as a stochastic process. Stochastic collocation is then used to discretize random space. This non-intrusive approach is both more efficient than Monte-Carlo methods and is as flexible in its application. The flow dynamics are simulated efficiently using the performance graphs approach implemented in the OSU Rivers model. For one-dimensional unsteady flow routing, the performance graph (PG) approach has been shown to be accurate, numerically efficient, and robust. The Hydraulic Performance Graph (HPG) of a channel reach graphically summarizes the dynamic relation between the flow through and the stages at the ends of the reach under gradually varied flow (GVF) conditions, while the Volumetric Performance Graph (VPG) summarizes the corresponding storage. The hydraulic routing for the entire system consists of dividing the river system into reaches and pre-computing the hydraulics for each of these reaches independently using a steady flow model. Then, a non-linear system of equations is solved that is assembled based on information summarized in the systems' performance graphs, the reach-wise equation of conservation of mass, continuity and water stage compatibility conditions at the union of reaches (nodes), and the system boundary conditions. For complex flows in river systems such as when there is flow over floodplains, the dynamic relation between water stages and flow in a river reach is best represented by depth averaged two-dimensional hydrodynamic models. The applicability of two-dimensional flow modeling for the construction of PGs for unsteady flow routing in complex river networks is explored. To illustrate application of the uncertainty propagation framework and PGs derived from two-dimensional flow models, a test case is presented that examines uncertainty quantification and flood routing through a complex section of the Fraser River in British Columbia.
Two-dimensional Hydrodynamic Modeling and Analysis of the Proposed Channel Modifications and Grade Control Structure on the Blue River Near Byram's Ford Industrial Park, Kansas City, Missouri
Author: Richard J. HuizingaPublisher:
ISBN:
Category : River engineering
Languages : en
Pages :
Book Description
Effects of Agricultural Conservation Practices on Fish and Wildlife
Author: Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 380
Book Description
"The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.