Water joint : A joint in a stone pavement where the stones are left slightly higher than elsewhere, the rest of the surface being sunken or dished. The raised surface is intended to prevent the settling of water in the joints.

Example:


Taxonomy
Water Commission, JWC, the Joint, drinking water, water supplier, Washington County, Oregon, potable water, agencies, share ownership, Hillsboro, Forest Grove, Beaverton, Tigard, Tualatin Valley Water District, to the City, North Plains, Who We Are, What We Do.

Defination from the web:
Joint Water Commission. The Joint Water Commission (JWC) is the primary drinking water supplier in Washington County, Oregon, and ... Conservation | Contact Us. Copyright ©2007 Joint Water Commission. All rights reserved. san francisco web design by Flying Cow Design ...