<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 19, 2018, at 5:06 AM, John Sturdy <<a href="mailto:jcg.sturdy@gmail.com" class="">jcg.sturdy@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">On Mon, Feb 12, 2018 at 4:12 PM, Paul Allen <span dir="ltr" class=""><<a href="mailto:pla16021@gmail.com" target="_blank" class="">pla16021@gmail.com</a>></span> wrote:<br class=""><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class=""><span class=""></span> In my part of the world, an artificial waterway used<br class=""><div class="gmail_extra"><div class="gmail_quote"><div class="">for conveying water is almost always referred to as an aqueduct<br class=""></div></div></div></div></blockquote><div class=""><br class=""></div><div class="">I think of an aqueduct as being a bridge conveying water above ground level; a channel cut into the ground for conveying water is a "leat”.</div></div></div></div></div></blockquote><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote"><div class=""><br class=""></div></div></div></div></div></blockquote><br class=""></div><div>The large artificial channels carrying water to Southern California from the Colorado River, eastern Sierra Mountains and Northern California are generally called “aqueducts”. For much of their length they are in open channels set into the ground.</div><div><br class=""></div><div>As an American English speaker, I’ve never heard of “leat”. And I don’t see “leat" in my old American Heritage Dictionary, so it is apparently not used at all in the US. So I pulled out my microprint Oxford English Dictionary (OED) to figure out what you are referring to.</div><div><br class=""></div><div>My OED says that a “leat” is “an open watercourse to conduct water for household purposes, mills, mining works, etc."</div><div class=""><br class=""></div><div>My OED says that an aqueduct is “an artificial channel for the conveyance of water from place to place; a conduit; esp. an elevated structure of masonry for this purpose.” So from the first part of that definition an aqueduct need not be an elevated structure.</div><div><br class=""></div><div>Based on this, my interpretation is that a leat is probably a smaller more local thing providing water to one or a small number houses or mills. While aqueduct is a more general term for the works used to transport water from place to place.</div><div><br class=""></div><div>Tod</div><div><br class=""></div><div class=""><br class=""></div></body></html>