This data set can be used to identify constructed drains, which are watercourses in the form of ditches, natural watercourses that have been modified to improve drainage, or buried tile systems.

This data is for illustrative use only and is not to be used as a precise indicator of features. Please use caution when interpreting data and results.

Supplementary tables can be used and are available for download from the additional documentation section. Supplementary look-up table descriptions are available in the data description document, which is available for download from the additional documentation section.