{"id":443,"date":"2026-06-05T11:03:15","date_gmt":"2026-06-05T11:03:15","guid":{"rendered":"https:\/\/coloradorelocationreport.com\/?p=443"},"modified":"2026-06-05T11:03:15","modified_gmt":"2026-06-05T11:03:15","slug":"has-the-water-in-denvers-sloans-lake-killed-fish","status":"publish","type":"post","link":"https:\/\/coloradorelocationreport.com\/?p=443","title":{"rendered":"Has the water in Denver\u2019s Sloan\u2019s Lake killed fish?"},"content":{"rendered":"<div>\n<div>\n<h2>Yes.<\/h2>\n<\/div>\n<p>Sloan\u2019s Lake has experienced numerous algae blooms over the past several decades, some resulting in water so toxic, it killed thousands of fish.<\/p>\n<p>Read more <a href=\"https:\/\/coloradorelocationreport.com\/?p=442\">Utah\u2019s richest man wants Vail Resorts to sell him the nation\u2019s largest ski area<\/a><\/p>\n<p>The lake\u2019s most recent die-off occurred in 2024 when at least 2,000 fish died from a toxic blue-green algae bloom. Blue-green algae blooms occur when water temperatures rise above normal levels, causing algae to over-produce. Algae can harm fish by releasing dangerous toxins or by \u201csucking\u201d oxygen out of the water during decomposition, suffocating fish.<\/p>\n<p>Due to its shallow average depth of 3.5 feet, Sloan\u2019s Lake is particularly susceptible to rising water temperatures and resulting toxic blooms. As temperatures continue to rise due to climate change, scientists predict freshwater algae blooms could become more common.<\/p>\n<p>Read more <a href=\"https:\/\/coloradorelocationreport.com\/?p=440\">From Arvada to the world: Colorado leads the nation\u2019s growth of disc golf courses<\/a><\/p>\n<p>Colorado Parks and Wildlife has stocked the lake with fish for recreational fishing for several decades, most recently depositing 9,500 rainbow trout after the 2024 die-off.<\/p>\n<p><em>This fact brief is responsive to conversations such as this one.<\/em><\/p>\n<p><em>The Colorado Sun partners with Gigafact to produce fact briefs \u2014 bite-sized fact checks of trending claims. Read our methodology to learn how we check claims.<\/em><\/p>\n<p>Read more <a href=\"https:\/\/coloradorelocationreport.com\/?p=438\">A pharmaceutical company is trying to block Colorado\u2019s first-in-the-nation drug price cap in court<\/a><\/p>\n<h2>Sources<\/h2>\n<ul>\n<li>The Colorado Sun After thousands of fish die in Sloan\u2019s Lake, park officials jump in to cool the water<\/li>\n<li>Denver Parks and Recreation Sloan\u2019s Lake Environmental Assessment<\/li>\n<li>Centers for Disease Control and Prevention Harmful Algal Blooms: Contributing Factors and Impacts<\/li>\n<li>Colorado Parks and Wildlife Email correspondence<\/li>\n<li>Environmental Protection Agency Climate Change and freshwater harmful algal blooms<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Yes. Sloan\u2019s Lake has experienced numerous algae blooms, some resulting in water so toxic, it killed thousands of fish.<\/p>\n","protected":false},"author":1,"featured_media":46,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Has the water in Denver\u2019s Sloan\u2019s Lake killed fish? - Colorado Relocation Report<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/coloradorelocationreport.com\/?p=443\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Has the water in Denver\u2019s Sloan\u2019s Lake killed fish? - Colorado Relocation Report\" \/>\n<meta property=\"og:description\" content=\"Yes. Sloan\u2019s Lake has experienced numerous algae blooms, some resulting in water so toxic, it killed thousands of fish.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/coloradorelocationreport.com\/?p=443\" \/>\n<meta property=\"og:site_name\" content=\"Colorado Relocation Report\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-05T11:03:15+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/#\\\/schema\\\/person\\\/144e01590ba7a61cfe6fd08a0fa7a482\"},\"headline\":\"Has the water in Denver\u2019s Sloan\u2019s Lake killed fish?\",\"datePublished\":\"2026-06-05T11:03:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443\"},\"wordCount\":301,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/coloradorelocationreport.com\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/06d10717aac7c655eea4c2ca40fa4b52-scaled.webp\",\"articleSection\":[\"Climate\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443\",\"url\":\"https:\\\/\\\/coloradorelocationreport.com\\\/?p=443\",\"name\":\"Has the water in Denver\u2019s Sloan\u2019s Lake killed fish? 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