Ceramic tile outlet - USDA Agricultural Research Service

USDA Agricultural Research Service
... Some nitrates have been detected in tile outlets. The question: Is the nitrates coming from tile (subsurface drainage ...
Source: www.ars.usda.gov

LICO Factsheet No. 11 - Ontario's Tile Drainage at 2000
... Do - Repair and maintain tile outlets damaged by ice and erosion ...
Source: www.drainage.org