{"id":43784,"date":"2023-06-01T05:45:21","date_gmt":"2023-06-01T05:45:21","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=43784"},"modified":"2023-06-01T05:45:21","modified_gmt":"2023-06-01T05:45:21","slug":"el-molino-3","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2023\/06\/01\/el-molino-3\/","title":{"rendered":"El Molino: a valley-blocking landslide breach event in Colombia"},"content":{"rendered":"<h4>El Molino: a valley-blocking landslide breach event in Colombia<\/h4>\n<p>Back in November I posted twice (<a href=\"https:\/\/blogs.agu.org\/landslideblog\/2022\/11\/14\/el-molino-1\/\">here<\/a> and <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2022\/11\/20\/el-molino-landslide-2\/\">here<\/a>) about the very large, valley blocking landslide at El Molino in Colombia on 10 November 2022, which is located at [7.949, -73.025]. Five people were killed and 28 families were rendered homeless.\u00a0 Based on Planet imagery, I noted that <em>&#8220;there is concern about the damming of the river as well as about the potential for a further landslide.\u00a0 A small lake has developed.&#8221;<\/em><\/p>\n<p>Yesterday, <a href=\"https:\/\/twitter.com\/UNGRD\/status\/1663902195165675524\">Helbert Garcia-Delgado tweeted to that the lake had breached<\/a>, creating a debris flow:<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Apparently, a pond of approximately 38,000 m2 (satellite imagery provided below) was created as a result of the El Molino landslide (<a href=\"https:\/\/t.co\/BPlFxSIgyK\">https:\/\/t.co\/BPlFxSIgyK<\/a>), but it has now been breached, leading to the initiation of a large-scale mass flow. No casualties reported so far. <a href=\"https:\/\/t.co\/lmixLxwbYu\">https:\/\/t.co\/lmixLxwbYu<\/a> <a href=\"https:\/\/t.co\/nM7g0QsdIe\">pic.twitter.com\/nM7g0QsdIe<\/a><\/p>\n<p>&mdash; Helbert Garc\u00eda-Delgado (@HelbertSchneid1) <a href=\"https:\/\/twitter.com\/HelbertSchneid1\/status\/1663922906357723137?ref_src=twsrc%5Etfw\">May 31, 2023<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<p>The video in the second tweet shows the aftermath of the resultant landslide.\u00a0 This is an area that is very difficult to image with satellites as cloud is very common, but fortunately <a href=\"https:\/\/www.planet.com\/\">Planet<\/a> captured an image on 31 May 2023 that is mostly cloud free.\u00a0 So first, this is an image from 18 May 2023, showing the aftermath of the landslide and with the lake, located on the southern side margin of the landslide, intact:-<\/p>\n<div id=\"attachment_43789\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43789\" class=\" wp-image-43789\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b.jpg\" alt=\"The El Molino landslide before the breach of the lake, as captured on 18 May 2023.\" width=\"800\" height=\"633\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b.jpg 1031w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b-300x237.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b-1024x810.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b-768x608.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-43789\" class=\"wp-caption-text\"><em>The El Molino landslide before the breach of the lake, as captured on 18 May 2023. Image copyright Planet, used with permission.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>And here is the same site in an image dated 31 May 2023. showing the aftermath of the breach event:-<\/p>\n<div id=\"attachment_43797\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43797\" class=\"wp-image-43797\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d.jpg\" alt=\"The El Molino landslide after the breach of the lake, as captured on 31 May 2023. Image copyright Planet, used with permission.\" width=\"800\" height=\"634\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d.jpg 1029w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d-300x238.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d-1024x812.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d-768x609.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-43797\" class=\"wp-caption-text\"><em>The El Molino landslide after the breach of the lake, as captured on 31 May 2023. Image copyright <a href=\"https:\/\/www.planet.com\/\">Planet<\/a>, used with permission.<\/em><\/p><\/div>\n<p>.<\/p>\n<p>The image clearly shows that the lake has indeed breached and that most of the water has escaped, leaving a small muddy pool.\u00a0 The slider below should allow you to compare the two images, including the changes in morphology of the landslide caused by the debris flow:<\/p>\n<div class=\"juxtapose\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-1b.jpg\" alt=\"The El Molino landslide before the breach of the lake, as captured on 18 May 2023.\" width=\"800\" height=\"633\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/06\/23_06-El-Molino-2d.jpg\" alt=\"The El Molino landslide after the breach of the lake, as captured on 31 May 2023. Image copyright Planet, used with permission.\" width=\"800\" height=\"634\" \/><\/div>\n<p>.<\/p>\n<p><a href=\"https:\/\/caracol.com.co\/2023\/05\/31\/emergencia-por-avalancha-en-zona-rural-de-abrego\/\">La Opinion has a news report about the debris flow<\/a>, which indicates that there has been extensive damage to farmland, houses and a bridge in the municipalities of \u00c1brego and Villa Caro.<\/p>\n<p>.<\/p>\n<h4><strong>Reference and acknowledgement<\/strong><\/h4>\n<p>Planet Team (2023). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. <a href=\"https:\/\/www.planet.com\/\">https:\/\/www.planet.com\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Satellite images from Planet show that the landslide lake at El Molino in Colombia has breached, releasing a large debris flow. <!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":43797,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[7203],"tags":[359,469,898,521,122,688],"class_list":["post-43784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-planet-labs","tag-colombia","tag-featured","tag-planet","tag-satellite-image","tag-south-america","tag-valley-blocking-landslide"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/comments?post=43784"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43784\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/43797"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=43784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=43784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=43784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}