Sustainability of Irrigated Agriculture in the San Joaquin Valley, California PDF Download
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Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 12
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Book Description
Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 12
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
Since the discovery of selenium toxicosis in the Kesterson Reservoir in the San Joaquin Valley, California, public perception of irrigated agriculture as a benign competitor for California's developed water supply has been changed irrevocably. Subsurface return flows from irrigated agriculture were implicated as the source of selenium which led to incidents of reproductive failure in waterfowl and threatened survival of other fish and wildlife species. Stringent water quality objectives were promulgated to protect rivers, tributaries, sloughs and other water bodies receiving agricultural discharges from selenium contamination. Achieving these objectives was left to the agricultural water districts, federal and state agencies responsible for drainage and water quality enforcement in the San Joaquin Basin. This paper describes some of the strategies to improve management of water resources and water quality in response to these new environmental objectives. Similar environmental objectives will likely be adopted by other developed and developing countries with large regions of arid zone agriculture and susceptible wildlife resources. A series of simulation models have been developed over the past four years to evaluate regional drainage management strategies such as: irrigation source control; drainage recycling; selective retirement of agricultural land; regional shallow ground water pumping; coordination of agricultural drainage, wetland and reservoir releases; and short-term ponding of drainage water. A new generation of Geographic Information Service-based software is under development to bridge the gap between planning and program implementation. Use of the decision support system will allow water districts and regulators to continuously monitor drainage discharges to the San Joaquin River in real-time and to assess impacts of management strategies that have been implemented to take advantage of the River's assimilative capacity for trace elements and salts.
Author: Ariel Dinar
Publisher:
ISBN:
Category : Drainage
Languages : en
Pages : 64
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Author: Andrew C. Chang
Publisher: Springer Science & Business Media
ISBN: 9400768516
Category : Nature
Languages : en
Pages : 429
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Book Description
This book documents the history of irrigated agriculture and drainage in the San Joaquin Valley, and describes the hydrology and biogeochemical processes of salts and selenium, remediation technologies for salts and trace elements and policy and management options. The contents are comprised of fourteen chapter-length independent treatises, each depicting with fresh perspective a distinctive salinity drainage topic. The opening chapters detail the evolution of irrigated agriculture, and depict the geochemical and hydrological processes that define the San Joaquin Valley, including the physics, chemistry, and biology attributes that impact water management policies and strategies. Next, the contributors address the biogeochemistry of selenium, the role of plants in absorbing it from soils, and the processes involved in retaining and concentrating dissolved salts in drainage water. Further chapters describe on-farm and plot-level irrigation provisions to reduce agricultural drainage outputs and examine their effects on plant performance. This volume offers realistic policy analysis of water management options for irrigated agriculture in the Valley and assesses their respective outcomes, if implemented. Also included is an international perspective on the sustainability of irrigated agriculture there.
Author: Nigel W.T. Quinn
Publisher:
ISBN:
Category : Irrigation farming
Languages : en
Pages : 20
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Author: California Environmental Protection Agency. Irrigated Agriculture Technical Advisory Committee
Publisher:
ISBN:
Category : Agricultural pollution
Languages : en
Pages : 78
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Author: San Joaquin Valley Interagency Drainage Program
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 232
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Book Description
Author: James Harold Cothern
Publisher:
ISBN:
Category : Alternative agriculture
Languages : en
Pages : 16
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Author: San Joaquin Valley Interagency Drainage Program
Publisher:
ISBN:
Category : Drainage
Languages : en
Pages : 196
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Book Description
Author: Thiruppudaimarudhur N. Narasimhan
Publisher:
ISBN:
Category : Drainage
Languages : en
Pages : 102
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Book Description
