{"id":43273,"date":"2023-03-27T07:04:41","date_gmt":"2023-03-27T07:04:41","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=43273"},"modified":"2023-03-27T07:04:41","modified_gmt":"2023-03-27T07:04:41","slug":"novato-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2023\/03\/27\/novato-1\/","title":{"rendered":"Novato: an interesting landslide triggered by heavy rainfall in California"},"content":{"rendered":"<h4>Novato: an interesting landslide triggered by heavy rainfall in California<\/h4>\n<p>Last week, the latest in a long series of large storms struck <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=california&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">California<\/a>, triggering another round of flooding and landslides.\u00a0 One particularly interesting slope failure occurred at Novato in Marin County.\u00a0 <a href=\"https:\/\/www.sfchronicle.com\/bayarea\/article\/novato-road-damage-bay-area-storms-17856032.php\">The San Francisco Chronicle has a nice image of the aftermath<\/a>:-<\/p>\n<div id=\"attachment_43275\" style=\"width: 522px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43275\" class=\"size-full wp-image-43275\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-1.jpg\" alt=\"The aftermath of the landslide in Novato, California. \" width=\"512\" height=\"384\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-1.jpg 512w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-1-300x225.jpg 300w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><p id=\"caption-attachment-43275\" class=\"wp-caption-text\">The aftermath of the landslide in Novato, California. <a href=\"https:\/\/www.sfchronicle.com\/bayarea\/article\/novato-road-damage-bay-area-storms-17856032.php\">Image from the San Francisco Chronicle.<\/a><\/p><\/div>\n<p>.<\/p>\n<p><a href=\"https:\/\/twitter.com\/sarah_klieves\/status\/1639077493432008705\">A Tweet<\/a> by <a href=\"https:\/\/twitter.com\/sarah_klieves\">Sarah Klieves<\/a>,\u00a0 a senior producer for NBC Bay Area, provides the best perspective though:-<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Our <a href=\"https:\/\/twitter.com\/nbcbayarea?ref_src=twsrc%5Etfw\">@nbcbayarea<\/a> SkyRanger flew over a landslide that crumpled a section of Redwood Blvd near Olompali State Historic Park. This is the only public road into the park, so rangers say it will be closed for awhile. <a href=\"https:\/\/t.co\/saQqDMff9d\">pic.twitter.com\/saQqDMff9d<\/a><\/p>\n<p>&mdash; Sarah Klieves (@sarah_klieves) <a href=\"https:\/\/twitter.com\/sarah_klieves\/status\/1639077493432008705?ref_src=twsrc%5Etfw\">March 24, 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>This is a view from that video, showing the landslide:-<\/p>\n<div id=\"attachment_43277\" style=\"width: 810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43277\" class=\" wp-image-43277\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2.jpg\" alt=\"The landslide at Novato, California.  \" width=\"800\" height=\"476\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2.jpg 1713w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2-300x178.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2-1024x609.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2-768x457.jpg 768w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-2-1536x914.jpg 1536w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><p id=\"caption-attachment-43277\" class=\"wp-caption-text\">The landslide at Novato, California. <a href=\"https:\/\/twitter.com\/sarah_klieves\/status\/1639077493432008705\">Image from a Tweet by Sarah Klieves of NBC Bay Area<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>The location of the landslide appears to be [38.1444, -122.5652]:-<\/p>\n<div id=\"attachment_43279\" style=\"width: 809px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43279\" class=\" wp-image-43279\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-3.jpg\" alt=\"Google Earth image of the site of the landslide at Novato, California.\" width=\"799\" height=\"563\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-3.jpg 1295w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-3-300x211.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-3-1024x721.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-3-768x541.jpg 768w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><p id=\"caption-attachment-43279\" class=\"wp-caption-text\">Google Earth image of the site of the landslide at Novato, California.<\/p><\/div>\n<p>.<\/p>\n<p>Interestingly, Redwood Boulevard, which is the road damaged by the landslide, was constructed in 2015.\u00a0 A Google Earth image from March that year shows that the slope at the site of the landslide was cut and reprofiled, and that drains were installed:-<\/p>\n<div id=\"attachment_43281\" style=\"width: 809px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-43281\" class=\" wp-image-43281\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-4.jpg\" alt=\"Google Earth image of the site of the landslide at Novato, California in March 2015, showing engineering works underway at the site.\" width=\"799\" height=\"561\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-4.jpg 1284w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-4-300x211.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-4-1024x719.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2023\/03\/23_03-Novato-4-768x540.jpg 768w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><p id=\"caption-attachment-43281\" class=\"wp-caption-text\">Google Earth image of the site of the landslide at Novato, California in March 2015, showing engineering works underway at the site.<\/p><\/div>\n<p>.<\/p>\n<p>It is interesting that at this site the slope is a little steeper than in the adjacent areas, which presumably is the reason for the additional works, including the drains. That failure is a classic slump.\u00a0 Fortunately the toe has not extended to the main highway, and the limited mobility of the debris has meant that this road is unaffected.\u00a0 However, the landslide has caused disruption to a watermain and to a gas pipeline.<\/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>Novato: an interesting landslide on a  road slope that had been constructed in 2015, triggered by heavy rainfall in California.<!-- 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":43277,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[137,685,469,103,959,725,27,48],"class_list":["post-43273","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-california","tag-engineered-slope","tag-featured","tag-highway","tag-landslide-report","tag-north-america","tag-road","tag-usa"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43273","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=43273"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/43273\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/43277"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=43273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=43273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=43273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}