{"id":72,"date":"2019-06-21T13:56:07","date_gmt":"2019-06-21T20:56:07","guid":{"rendered":"https:\/\/blogs.ubc.ca\/topo\/?page_id=72"},"modified":"2020-05-21T17:28:03","modified_gmt":"2020-05-22T00:28:03","slug":"swales","status":"publish","type":"page","link":"https:\/\/blogs.ubc.ca\/topo\/tools-knowledge\/elements\/swales\/","title":{"rendered":"Swales"},"content":{"rendered":"<h1>Swales<\/h1>\n<div id=\"random-accordion-id-176\" class=\"accordion-shortcode  accordion-container\">\n<h3 ><a href=\"#introduction-0\" >Introduction<\/a><\/h3><div id=\"introduction-0\" class=\"accordian-shortcode-content \" ><p>At their simplest, swales are a crease in the landscape designed to divert surface stormwater run-off.<\/p>\n<div style=\"padding: 76.92% 0 0 0; position: relative;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/player.vimeo.com\/video\/385722260?loop=1&amp;title=0&amp;byline=0&amp;portrait=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><em>conceptual approach to managing stormwater -- swales are one of a suite of\u00a0 tools we have to slow and manage stormwate ron site.<\/em><\/div>\n<div><\/div>\n<p>Swales are usually conceived of as a channel with a specific width, depth, side-slope, and gradient used to introduce flow through the channel. Recognizing the basic contour signature of a swale (particularly as opposed to a ridgeline) will make it easier to identify existing swales in a topographic survey as well as to more quickly integrate them into a grading plan.<\/p>\n<div style=\"padding: 76.92% 0 0 0; position: relative;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/player.vimeo.com\/video\/377703525?loop=1&amp;title=0&amp;byline=0&amp;portrait=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><em>swale contour signature vs ridgeline contour signature<br \/>\nwith constant longitudinal gradient and varying depth \/ height<\/em><\/div>\n<div>\n<p>&nbsp;<\/p>\n<div style=\"padding: 76.92% 0 0 0; position: relative;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/player.vimeo.com\/video\/383022295?loop=1&amp;title=0&amp;byline=0&amp;portrait=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><em>swale contour signature with constant High Point of Swale (HPS) and<br \/>\nvarying longitudinal gradient<\/em><\/div>\n<\/div>\n<div><\/div>\n<p>\n<\/div>\n<h3 ><a href=\"#terraces-buildings-1\" >Terraces &amp; Buildings<\/a><\/h3><div id=\"terraces-buildings-1\" class=\"accordian-shortcode-content \" ><\/p>\n<p>Terraces and buildings often need diversion devices to move stormwater run-off around them. Swale placement and grading is often similar for both terraced areas (such as for a sports field) and for a building. Both terraces (planar areas with minimal slopes) and buildings (level building pads) will often require a swale to divert run-off around them.<\/p>\n<p>&nbsp;<\/p>\n<div style=\"padding: 76.92% 0 0 0; position: relative;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/player.vimeo.com\/video\/385721867?loop=1&amp;title=0&amp;byline=0&amp;portrait=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><em>locating swales around program \/ terraces<\/em><\/div>\n<p>&nbsp;<\/p>\n<p>A swale starting point -- the \"High Point of Swale\" (HPS) -- spot elevation is located on the uphill side of the terrace or building. The swale is then routed around the area it is meant to protect with an end point that will release water further down-slope or, ideally, into a retention area. The swale route is assigned a slope along its center-line to insure run-off moves around and away from the area it is protecting.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-609 aligncenter\" src=\"https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-1.jpg\" alt=\"\" width=\"1700\" height=\"1100\" srcset=\"https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-1.jpg 1700w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-1-300x194.jpg 300w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-1-768x497.jpg 768w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-1-1024x663.jpg 1024w\" sizes=\"auto, (max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><em><span style=\"font-size: 1rem;\">Swales (shown in blue) are routed from a high point (HPS) on the uphill side of a terrace (shown as a rectangle) and wrap around the terrace<\/span><\/em><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-610 aligncenter\" src=\"https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-2.jpg\" alt=\"\" width=\"1700\" height=\"1100\" srcset=\"https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-2.jpg 1700w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-2-300x194.jpg 300w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-2-768x497.jpg 768w, https:\/\/blogs.ubc.ca\/topo\/files\/2019\/07\/Swale-Terrace-2-1024x663.jpg 1024w\" sizes=\"auto, (max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><em><span style=\"font-size: 1rem;\">When incorporated, swales create a 'crease' around the terrace or planar area which catches and diverts stormwater run-off<\/span><\/em><\/p>\n<p>\n<\/div>\n<h3 ><a href=\"#linksother-resources-2\" >Links\/Other Resources<\/a><\/h3><div id=\"linksother-resources-2\" class=\"accordian-shortcode-content \" ><\/p>\n<p><a href=\"https:\/\/www.asla.org\/bioswales.aspx\" target=\"_blank\" rel=\"noopener noreferrer\">Residential bioswales<\/a><\/p>\n<p><a href=\"https:\/\/wiki.sustainabletechnologies.ca\/wiki\/Swales\" target=\"_blank\" rel=\"noopener noreferrer\">Swale design<\/a><\/p>\n<p>\n<\/div>\n<\/div><!-- #random-accordion-id-176end of accordion shortcode -->\n","protected":false},"excerpt":{"rendered":"<p>Swales<\/p>\n","protected":false},"author":65473,"featured_media":0,"parent":2,"menu_order":6,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-72","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/pages\/72","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/users\/65473"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/comments?post=72"}],"version-history":[{"count":31,"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/pages\/72\/revisions"}],"predecessor-version":[{"id":1332,"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/pages\/72\/revisions\/1332"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/pages\/2"}],"wp:attachment":[{"href":"https:\/\/blogs.ubc.ca\/topo\/wp-json\/wp\/v2\/media?parent=72"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}