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Useful to advanced undergraduate and graduate students in aquaculture, as well as to commercial aquaculturists, aquacultural researchers and aquaculture consultants, this book provides a thorough, but not excessively detailed, fundamental background on selected topics in hydrology and on water supply and water supply systems for pond aquaculture. More detailed than a general textbook, but less detailed than an engineering manual, this book suppplies aquaculturists with information necessary to solve problems and communicate effectively, and it will enlighten engineers about problems encountered in aquaculture projects. Topics include the properties of water, water budgets, water conservation, open-channel flows, water measurement, ground water and wells, pond design, and alternatives to pond aquaculture

2017 annual AGU hydrology days was held at Colorado State University on March 20 - March 22, 2017. ; Includes bibliographical references. ; Tarrant Regional Water District (TRWD) was established in 1924 with two primary missions – flood control and water supply in and around Tarrant County, Texas. TRWD's current 11 county service area population of 1.8 million is projected to be 2.25 million by 2050. Sustainability will be key in meeting these growing demands. In 1997, the 75th Texas Legislature passed Senate Bill 1 aimed at improving development and management of the state's water resources by establishing a regional water planning process. In terms of systems engineering doctrines, Texas basically established a state wide water resources super system or system of systems and provided the associated concept development stage process for the state's designated planning regions to execute on an iterative and recurring five year cycle. With respect to sustainability, Senate Bill 1 also directed that water conservation options and actions be integral to the water supply planning, permitting and operational developments. Part of TRWD's sustainable water supply is a 2,000 acre constructed wetlands put online in 2013. This paper examines TRWD's constructed wetlands from the systems engineering and sustainability perspectives. From the systems engineering standpoint, the Richland Chambers (RC) Wetlands Facility was designed and constructed using a multi-phased prototype approach allowing TRWD to research and evaluate treatment performance, operation and maintenance issues, and design criteria through actual field trials and implementation. The RC Constructed Wetland meets the State's conservation (sustainability) requirement in that the developed indirect reuse system successfully treats and enhances the quality of the Trinity River return flows from TRWD's service area prior to discharging back into Richland Chambers Reservoir for the return trip to the service area. The net achievement is adding the equivalent of a new source to TRWD's water supply inventory without building a new reservoir or transmission conveyance (system capacity upgrade), achieving the State required conservation (recycling) mandate in Senate Bill 1 with indirect reuse, and maintaining the existing environmental water quality in Richland Chambers Reservoir with the removal of nutrients and sediments.

In Indian context

Situated in the western part of Hungary, Lake Balaton is the second largest shallow lake in the European Union after Lake Peipus and the largest one laying entirely within the borders of the EU. Despite of its large surface area of some 600 km2, its average depth is only 352 cm. Lake Balaton is an exorheic lake on multiannual basis, but dry spells in the last 2 decades resulted in a 64-month period without outflow. Studies by the authors and others proved that human impacts of global and local nature resulted in the significant decrease of the natural water balance (NWB) in the last 3-4 decades. Climate change is already manifested in the reduction of the discharge of most of the tributaries including the largest one, Zala river. The statistically significant decrease in the last 3 decades of the discharge of Zala river and Kiskomáromi-canal corresponds to a deficit of 67 lake mm/year. The impact of further human interventions including reconstruction of Balaton Minor, a vast wetland and mining resulted in a further deficit of 119 to 154 lake mm/year. The average of the annual NWB of the last 30 years is only 63% of the long-term average. In addition to the decrease in the average discharges and NWB, variability of these values increased considerably. Some of these phenomena can be attributed to climate change. Future impacts of climate change are evaluated and it is concluded that the Lake Balaton watershed may turn into an endorheic basin in the second half of the 21st century.

International audience ; Hydrology: water cycle science and issues but also• Hydroecology•Related biogeochimical cycles• Hydric erosion & Geomorphology• Epidemiology (waterborne deseases) Fresh water issues:• Inland water ressources monitoring (quantity & quality)• Aquatic habitats monitoring• Hydrological risks preventionActions:• Science: Processes understanding, modelling and simulation• Public policies (Water managers, engineering):– EU Nitrates Directive - 1991– EU Water Framework – 2000– EU Floods Directive - 2007

International audience ; Hydrology: water cycle science and issues but also• Hydroecology•Related biogeochimical cycles• Hydric erosion & Geomorphology• Epidemiology (waterborne deseases) Fresh water issues:• Inland water ressources monitoring (quantity & quality)• Aquatic habitats monitoring• Hydrological risks preventionActions:• Science: Processes understanding, modelling and simulation• Public policies (Water managers, engineering):– EU Nitrates Directive - 1991– EU Water Framework – 2000– EU Floods Directive - 2007