Hydraulic Engineering Commons^™

An Analysis Of Partial-Depth, Floating, Impermeable Guidance Structures For Downstream Fish Passage At Hydroelectric Facilities, Kevin Mulligan

Doctoral Dissertations

Partial-depth, impermeable guidance structures (or guide walls) are used to enhance downstream passage effectiveness at a hydroelectric facility by actively guiding fish to a safe passage route (i.e. the bypass). Guide walls have been installed in a variety of ways and, like many fish passage devices, have resulted in variable efficiency rates. Currently, the most common type of installment is a steel panel guide wall attached to a floating boom. While less utilized than other guidance structure options (e.g. louvers and bar racks), guide walls have been gaining popularity, particularly within the Northwest United States. The aim of this dissertation …

Study On The Critical Velocity Of Groundwater To Form Subsidence Sinkholes In Karst Area, Fuwei Jiang

Sinkhole Conference 2015

Subsidence sinkholes in karst area are a common geological hazard causing disaster accidents. However, the critical hydraulic conditions of forming subsidence sinkholes have not been well understood. Based on the theories of pipe flow, this paper derives expressions of a critical hydraulic condition for assessing whether it leads to subsidence sinkholes. A case study with samples of the cohesive soils taken from the Wuxuan county, Guangxi province, China, was conducted to evaluate the derived critical value. Combining the derived critical value and the monitoring data of hydraulic conditions in the study field, our results indicate that subsidence sinkholes are not …

Mitigating The Risk Of Extreme Water Scarcity And Dependency: The Case Of Jordan, Joep F. Schyns, Arwa Hamaideh, Arjen Y. Hoekstra, Mesfin Mekonnen, Marlou Schyns

Daugherty Water for Food Global Institute: Faculty Publications

Jordan faces great internal water scarcity and pollution, conflict over trans-boundary waters, and strong dependency on external water resources through trade. This paper analyzes these issues and subsequently reviews options to reduce the risk of extreme water scarcity and dependency. Based on estimates of water footprint, water availability, and virtual water trade, we find that groundwater consumption is nearly double the groundwater availability, water pollution aggravates blue water scarcity, and Jordan’s external virtual water import dependency is 86%. The review of response options yields 10 ingredients for a strategy for Jordan to mitigate the risks of extreme water scarcity and …

Recent Progress In Performance Evaluations And Near Real-Time Assessment Of Operational Ocean Products, Fabrice Hernandez, Edward Blockley, Gary B. Brassington, Fraser Davidson, Prasanth Divakaran, Marie Drévillon, Shiro Ishizaki, Marcos Garcia-Sotillo, Patrick J. Hogan, Priidik Lagemaa, Bruno Levier, Matthew Martin, Avichal Mehra, Christopher Mooers, Nicolas Ferry, Andrew Ryan, Charly Regnier, Alistair Sellar, Gregory C. Smith, Sarantis Sofianos, Todd Spindler, Gianluca Volpe, John Wilkin, Edward Zaron, Aijun Zhang

Civil and Environmental Engineering Faculty Publications and Presentations

Operational ocean forecast systems provide routine marine products to an ever-widening community of users and stakeholders. The majority of users need information about the quality and reliability of the products to exploit them fully. Hence, forecast centres have been developing improved methods for evaluating and communicating the quality of their products. Global Ocean Data Assimilation Experiment (GODAE) OceanView, along with the Copernicus European Marine Core Service and other national and international programmes, has facilitated the development of coordinated validation activities among these centres. New metrics, assessing a wider range of ocean parameters, have been defined and implemented in real-time. An …

A Computer Program For Optimal Control Of Water Supply Pump Stations: Development And Testing, Donald V. Chase

Donald V. Chase

This report presents an optimal control methodology designed to reduce the electrical consumption and operating costs at Army water supply pumping stations. The methodology, contained in a computer program called Optimal Control of Pumping Stations (OCOPS), enables water utility managers and operators to reduce the electrical consumption at pumping stations while maintaining adequate storage and system pressures for fire protection. OCOPS can be applied to any water distribution system and is not limited to any number of pumps, pump stations, or storage tanks within the system. The optimal control strategy developed is based on electricity unit charges, but can be …

Water Distribution Modeling, Thomas M. Walski, Donald V. Chase, Dragan A. Savic

Donald V. Chase

To effectively use water distribution models, the engineer must be able to link knowledge of basic hydraulic theory and the mechanics of the program with that of the operation of real-world systems. Water Distribution Modeling does just that. Written by industry experts, it provides a practical resource for engineers and modelers that goes well beyond being a how-to guide for typing data into a computer program. It contains straightforward answers to common questions related both to modeling and to distribution systems in general. This textbook walks the practicing engineer or student through the modeling process from start to finish — …

Morphological Response Of Sand Bed Streams To Unsteady Flow Events: An Experimental Study, Etta Haley Gunsolus

Electronic Thesis and Dissertation Repository

Changes in riverine discharge, such as those due to reservoir flushing, seasonal variation or extreme precipitation events, can alter sediment transport rates and morphology of the stream bed. Experimental research investigated the effect of unsteady flow event hydrographs on stream bed morphological response. Laboratory experiments were conducted in a 5.0 m-long sediment transport flume with a bed comprised of a medium sand. Experimental hydrographs were composed of antecedent (base-flow), unsteady event (flood) and post- flood (return to base-flow) stages. Three distinct series of experimental laboratory runs were conducted to systematically investigate the effect of three characteristics of unsteady flow event …

Estimation Of Historic Flows And Sediment Loads To San Francisco Bay, 1849 – 2011, Hamed Moftakhari Rostamkhani, David A. Jay, Stefan A. Talke, David H. Schoellhamer

Civil and Environmental Engineering Faculty Publications and Presentations

River flow and sediment transport in estuaries influence morphological development over decadal and century time scales, but hydrological and sedimentological records are typically too short to adequately characterize long-term trends. In this study, we recover archival records and apply a rating curve approach to develop the first instrumental estimates of daily delta inflow and sediment loads to San Francisco Bay (1849 – 1929). The total sediment load is constrained using sedimentation/erosion estimated from bathymetric survey data to produce continuous daily sediment transport estimates from 1849 to 1955, the time period prior to sediment load measurements. We estimate that ~55% (45 …

Quantification Of Variable Rate Irrigation Benefits And Spatial Variability In Root Zone Water Holding Capacity, Tsz Him Lo

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Variable rate irrigation (VRI) investment decisions require field-specific knowledge of benefits. The objective of this research was to help producers and consultants consider and quantify potential benefits of VRI. First, a conceptual model was developed for evaluating the public and/or private gain from adopting VRI where irrigation water supply is non-restrictive. Potential benefits were classified into three categories and were attributed to ten reasons. In the Central Plains at current prices, a small improvement in corn (maize) yield would make a large contribution to VRI profitability. Second, the potential irrigation withdrawal reduction from adapting VRI to spatial heterogeneity of root …

Modeling Water Age And Disinfection Byproduct Formation In Drinking Water Distribution Systems In East Tennessee, Seth Adam Fischer

Masters Theses

Chlorine disinfection of drinking waters is responsible for the standard of health we enjoy today and the eradication of waterborne disease. Chlorine also reacts with natural organic matter (NOM) to form disinfection byproducts (DBPs) which have been linked to cancer as well as reproductive and developmental issues. The exact mechanism for formation of regulated DBPs, trihalomethanes (THMs) and haloacetic acids (HAAs), is unknown. The literature has identified relationships between DBP formation and, most notably, characteristics of NOM, chlorine contact time, temperature, pH [negative log of hydrogen ion concentration], and chlorine dose. This study develops models both specific to individual utilities, …

An Empirical Water Quality And Best Management Practice Prioritization Model For Select Arkansas Watersheds, James Mccarty

Graduate Theses and Dissertations

The purpose of this study was to prioritize subwatersheds using water quality data and watershed characteristics. Water quality data was provided through studies by the Arkansas Natural Resources Commission, Beaver Water District, Arkansas Water Resources Center, and publicly available USGS gage data. A total of 114 sites across five HUC-8 watersheds were analyzed, including 12 USGS gages. Watershed characteristic data was retrieved from USGS and Arkansas GeoStore geodatabase repositories. A significant linear relationship between baseflow and stormflow nutrient concentrations was established allowing for the use of baseflow concentrations in the prioritization methodology. Pearson correlation, linear regression, classification and regression tree, …

Channel Shallowing As Mitigation Of Coastal Flooding, Philip M. Orton, Stefan A. Talke, David A. Jay, Larry Yin, Alan F. Blumberg, Nickitas Georgas, Haihong Zhao, Hugh J. Roberts, Kytt Macmanus

Civil and Environmental Engineering Faculty Publications and Presentations

Here, we demonstrate that reductions in the depth of inlets or estuary channels can be used to reduce or prevent coastal flooding. A validated hydrodynamic model of Jamaica Bay, New York City (NYC), is used to test nature-based adaptation measures in ameliorating flooding for NYC’s two largest historical coastal flood events. In addition to control runs with modern bathymetry, three altered landscape scenarios are tested: (1) increasing the area of wetlands to their 1879 footprint and bathymetry, but leaving deep shipping channels unaltered; (2) shallowing all areas deeper than 2 m in the bay to be 2 m below Mean …

Session C9: Cle Elum Dam Fish Passage: Novel, Research Driven Designs To Allow Downstream Passage For Juvenile Salmonids, Jason Wagner

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

When Cle Elum Dam (Washington, USA) was constructed, a highly productive sockeye salmon fishery was lost. As part of the proposed Yakima Basin Integrated Plan, fish passage will be restored at this site. For the migrating adults, a trap and haul fish collection facility will be constructed. For downstream juvenile salmon passage, a selective level outlet works, helical fish slide, and outfall will be constructed. The juvenile passage features groundbreaking research; primarily that of the helical fish slide. The presentation will cover aspects of the history of the project, the research driven designs, and the final designs (to be …

Session E9: Function Control Of Fish Migration Facilities At The Hydro Power Plant Kostheim At River Main, Dr. Jörg Schneider

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Applying various conventional and modern monitoring methods a function control of downstream migration facilities and turbine passage related mortality was conducted at the Kostheim Hydro Plant (4,9 MW; two Kaplan turbines; Δh max. 3,74 m, at MQ 2,36 m) at the river Main (km 3,2). Furthermore, the perceptibility and passability of a nature-like bypass for upstream migration was examined. Results showed a size selectivity of the bypass caused by an unsuitable entrance position 40 m downstream of the outlet of the turbines. The effectiveness of the downstream migration facilities proved to be low, leading to high mortalities at the …

Session A9: To Fill Or Not To Fill: Stream Simulation And Embedded Aquatic Organism Passage Structures, Robert Gubernick, Dan Cenderelli, Mark Weinhold, Dale Higgins, Jessica Kozarek, Sara Mielke

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Throughout North America stream simulation and embedded / recessed culverts are used to facilitate the passage of aquatic organisms thru road stream crossings. Although the concept of naturelike streambeds inside these structures is widely embraced, the design methodology and construction practice varies widely between state and federal agencies. Much debate has occurred with one specific requirement, whether or not to place stream bed material inside these structures. Not placing bed material inside structures assumes on going sediment transport processes will fill the structure’s interior with streambed materials. This is assumed to be a cost saving measure from both a …

Session C9: Priest Rapids Fish Bypass: A Case Study From Start To Finish, Curtis Dotson

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Priest Rapids Dam is a large (955 MW) hydroelectric dam on the Columbia River in Washington State, USA. As part of regulatory requirements associated with its FERC (Federal Energy Regulatory Commission) license and other agreements, the Public Utility District No. 2 of Grant County, WA was required to design and install non-turbine fish passage for downstream migrating juvenile salmonids at the dam, for the purpose to help meet its pre-establish survival standards for salmonid smolts passing through the Priest Rapids Hydroelectric Project during their downstream migration. This presentation is a case study highlighting the numerous steps that went into …

Session A9: Maintaining Agency Capacity For Ongoing And Future Road-Stream Crossing Challenges, Kurt Gernerd

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The USDA Forest Service is dedicated to managing the habitat, watersheds and terrestrial and aquatic organisms that live and migrate through the National Forest lands and waters throughout the United States, Alaska, Hawaii and Puerto Rico. To achieve our mission and advance sound stewardship of all natural and manmade resources, we work closely with tribes, local, state and federal agencies, our stakeholders, and partners to find sciencebased solutions to complex ecological issues. Within our National Forests there is a large transportation network that is vital to communities and the economy, and this network also includes many road‐stream crossings, which …

Session B9: How Fish Use And Process Flow Information, Joachim Mogdans, Horst Bleckmann

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Fish use the mechanosensory lateral line and the acoustic system for the processing of hydrodynamic information. With their lateral line fish perceive the amplitude, direction and frequency content of water motions relative to their body and tail fin surface as well as local pressure gradients across their head and trunk. With the acoustic system fish detect the particle displacement component and the pressure amplitude of a sound wave. Both, the lateral line and acoustic system, play an important role in many fish behaviors, including schooling, predator avoidance, intraspecific communication and prey detection. With the acoustic system fish not only …

Session E9: Incorporating Fish Friendly Solutions In Existing Pumping Stations; An Economical Solution Enabling Fish Migration, Lars Krakers

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The low lying parts of Holland are vulnerable to flooding and are therefore heavily protected by dykes and several pumping stations. These however cause serious obstacles to migratory fish. Pumping stations can be lethal barriers for fish migration. Currently a lot of pump manufacturers are developing new fish friendly pumps. To fit these new pumps in existing pumping stations, usually civil adjustments are required at considerable costs. A more cost effective alternative would be to perform a fish friendly upgrade of the existing pumps.

During the last 3 years Flowserve conducted excessive research to increase their knowledge on fish …

Session E9: Cumulated Mortalities Of Salmon And Eel In The Turbines Of The Loire-Brittany District, Cédric Briand, Marion Legrand, Pierre-Marie Chapon, Laurent Beaulaton, Gaelle Germis, Marie-Andree Arago, Timothee Besse, Laura De Canet, Pierre Steinbach

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The effect of dams on mortality during downstream migration was simulated using distribution and mortality models in the whole Loire-Brittany water district (155 000 Km2). A combination of models was used: (1) juvenile habitats for smolts, (2) productivity of juvenile salmon habitats, (3) production of silver eels (EDA model), The models (1)*(2) and (3) were used to predict the number of downstream migrants in the current conditions and with a transparent upstream migration. (4) Turbine mortality was calculated from either the characteristics of the turbine (diameter, rotation speed, height ...) or by extrapolation from the average mortality when information …