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San Joaquin District
Department of Water Resources
(559) 230-3300
Street and Mailing Address:
3374 East Shields Avenue
Fresno, CA 93726-6913
Location Map:
Closer | Wider
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Salt Management
Farming in high saline areas limits farmers' options on how they manage
the accumulation of salt on productive farmland. The options are variable
and depend on the physical conditions within the farm boundaries and
the farm economics. The key to any drainage management program is
improved irrigation efficiency. |
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Components of an IFDM System
The system may consist of border strips of trees to intercept regional
groundwater flow, three distinct crop production areas, each with
its own subsurface drainage system and sump, sump pumps and piping
to move the collected subsurface drainage water to each of the cropping
areas, and a solar evaporator. |
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Monitoring
Water quality monitoring and the subsequent recordkeeping practices
are important components of a successful IFDM program. A properly
designed monitoring program will aid in assessing any impact of the
agricultural drainage water disposal on surface and groundwater quality,
fish and wildlife, and public health. |
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Plant Selection
Over the past decade, research and informal testing by university,
government and resource agency personnel have identified a large number
of salt-tolerant agronomic crops, forages, halophytes and trees that
can be used in IFDM plantings. |
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Wildlife Issues
A goal of IFDM is to dispose of highly saline agricultural subsurface
drainage water in an environmentally sound way that does not impact
wildlife. Avoidance measures to greatly reduce the negative impacts
on wildlife include the design and management of the solar evaporator. |
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Economics
Although the cost of planning and implementing an IFDM system may
be high, the potential for economic gain and to continue farming may
be higher. The benefits from an IFDM strategy include the ability
to produce higher value crops and manage salinity and groundwater
levels, while complying with regulations. |
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IFDM Poster
A pictorial and descriptive summary of the various components of the
Integrated Drainage Management system designed to manage water, salts,
and selenium. The components include irrigation and subsurface drainage
systems, sequential water reuse, salt sensitive and salt tolerant
crops, solar evaporator and salt recovery process, and monitoring.
Click on poster for access. (1.4MB) |
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