

BIO -ENGINEERING ASPECTS OF AGRICULTURAL DRAINAGE 

 SAN JOAQUIN VALLEY, CALIFORNIA 





NUTRIENTS FROM TILE 

 DRAINAGE SYSTEMS 



Prepared by the 



California Department of Water Resources 

 William R. Gianelli, Director 



The agricultural drainage study was conducted under the direction of: 



Robert J. Pafford.Jr., Regional Director, Region 2 

 UNITED STATES BUREAU OF RECLAMATION 

 2800 Cottage Way, Sacramento, California 95825 



Paul DeFalco, Jr., Regional Director, Pacific Southwest Region 

 WATER QUALITY OFFICE, ENVIRONMENTAL PROTECTION AGENCY 

 760 Market Street, San Francisco, California 94102 



John R. Teerink, Deputy Director 



CALIFORNIA DEPARTMENT OF WATER RESOURCES 



1416 Ninth Street, Sacramento, California 95814 



May 1971 



