Record Display for the EPA National Library Catalog


Main Title Nutrients from Tile Drainage Systems.
Author Glando, Lawrence R. ;
CORP Author California State Dept. of Water Resources, Fresno. San Joaquin District.
Year Published 1971
Report Number DWR-174-6; EPA-13030-ELY; R2-71-9,; 13030-ELY-5/71-3
Stock Number PB-216 552
Additional Subjects ( Tile drains ; Water pollution) ; ( Subsurface drainage ; Nutrients) ; ( San Joaquin Valley ; Water pollution) ; Irrigation ; Agriculltural wastes ; Inorganic phosphates ; Concentration(Composition) ; California ; Design ; Soil analysis ; Periodic variations ; Geomorphology ; Fertilizers ; Fertilizing ; Water table ; Dissolved solids ; Return flow
Library Call Number Additional Info Location Last
NTIS  PB-216 552 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 104p
Tile drainage systems of the San Joaquin Valley were monitored for nutrients (nitrogen and phosphorus) to determine the algal growth potential (AGP) of the waste, and the degree of treatment required for removal of AGP. The objectives were to determine: (1) the average nutrient concentrations in tile drainage, (2) the magnitudes of annual, areal and seasonal variability of nutrients and discharges, (3) if a possible correlation exists between nutrients and agricultural practices, and (4) if existing soil conditions influence nutrient concentrations and flows. Average discharges and nutrient concentrations were calculated for different years, months and areas of interest (valleywide, major tiled areas, physiographic positions and soils). (Author Modified Abstract)