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San Joaquin Valley Agricultural Drainage


A Landowner's Manual, 2004 (5.3 MB)
This manual serves as a guide for developing Integrated On-Farm Drainage Management systems and is the first part of an educational and outreach program to educate landowners on the advantages, disadvantages, costs, and environmental regulations involved within an IFDM.

A Technical Advisor's Manual, 2005 (8.62 MB)
This manual is the second component of the program, and is designed to provide technical consultants and support personnel with the tools they need to assist farmers with developing and implementing an effective IFDM program.

White Papers

Solar Evaporator for Integrated on-Farm Drainage Management System at Red Rock Ranch, San Joaquin Valley, California (134 KB)
The purpose of this study was to evaluate data on evaporation rates of subsurface drainage water using a variety of evaporative substrates, nozzles, materials, and equipment so that a farm-scale solar evaporator could ultimately be designed and constructed. The pilot-scale solar evaporator was used to evaporate drainage water and recover salts, determine the optimum weather parameters for operating a solar evaporator, and examine methods to control the potential for salt drift.


Agricultural Drainage Research Development and Demonstration Activities
In cooperation with our partners in conducting research, development, and demonstration projects the Department presented an exhibit of useful technologies in managing agricultural drainage water and drainage-related effects in the San Joaquin Valley at the International Water Technology Conference, CSUFresno in April 2007. Projects include:

IFDM, Forages, Brine Shrimp, & Salt Poster (1.7 MB)
» IFDM System - Engineers and scientists are transferring the improvements on irrigation and drainage reuse systems and management practices related to salt, selenium, soil and plant selection to individual farms and districts.
» Forages have been identified that maintain adequate biomass production and quality when grown in soils having poor physical conditions due to long term irrigation with saline-sodic drainage water.
» Brine Shrimp - Researchers are evaluating the efficacy of reducing selenium load by intesive harvest of brine shrimp Artemia franciscana, in basins, combined with volatilization of selenium by microalgae.
» Salt - Biomass from saline crops may be potential feedstock for bioenergy and biobased products including electricity, biofuels, particle boards, and other industrial products, chemicals, and adhesives.

Solar Evaporator, HydroGeoSphere, Prosopis alba, & Boiler Poster (1.5 MB)
» Solar Evaporators are operated as part of an IFDM System.
» HydroGeoSphere - a three-dimensional numerical model for fully-integrated surface and subsurface flow and solute transport.
» Prosopis alba were planted to evaluate salinity tolerances and various growth characteristics, and to identify individual plants that could grow at near seawater salinities to use as clonal propagules.
» Brine Boiler and Solar Thermal Concentrator System were operated to assess the feasibility for disposing concentrated brine.

IFDM Poster (1.4 MB)
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.