{"id":49877,"date":"2025-09-15T04:10:00","date_gmt":"2025-09-15T09:10:00","guid":{"rendered":"https:\/\/nelson.wisc.edu\/the-commons\/?p=49877"},"modified":"2026-04-13T16:32:56","modified_gmt":"2026-04-13T21:32:56","slug":"the-new-gerrymander-flood-maps","status":"publish","type":"post","link":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/","title":{"rendered":"The New Gerrymander: Flood Maps"},"content":{"rendered":"\n<div class=\"gb-element-e48e76a9\" aria-description=\"Text messages sent to Beth Tellman\">\n<div class=\"gb-element-1c59f40c\">\n<div class=\"gb-element-c9393928\">\n<p class=\"gb-text gb-text-5354a0cb fake-text-message-date\" aria-hidden=\"true\">Sun, Jul 6 at 10:17 AM<\/p>\n\n\n\n<div class=\"fake-text-message\">\n<p class=\"gb-text\">I am so sick about this mystic camp\/TX flooding. I am in a physician mom group and one of the member&#8217;s daughter (my daughter\u2019s age) body was found last night. No survivors from her cabin yet- all 8yo girls \ud83d\ude22 How does that happen?<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-element-786313ce\">\n<p class=\"gb-text gb-text-ba1425c0 fake-text-message-date\" aria-hidden=\"true\">Mon, Jul 7 at 1:13 AM<\/p>\n\n\n\n<div class=\"fake-text-message\">\n<p class=\"gb-text\">oh beth we think about you constantly re: these horrifying floods!!! 2 of my very best buds are from Houston and both know several parents who lost kids. It\u2019s too awful to seem real<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"drop-cap\">I am a flood scientist. I use satellite data to understand why deadly floods happen and what could have been different. The July 2025 flooding in central Texas was the<a href=\"https:\/\/yaleclimateconnections.org\/2025\/07\/the-deadliest-floods-in-u-s-history\/\"> deadliest<\/a> flash flood in recent U.S. history: 135 dead, including 35 children. And this time, it wasn\u2019t just flood scientists wondering what went wrong.<\/p>\n\n\n\n<p>My sister-in-law asked how this could happen to her colleagues. My mom friends wanted to know why the Camp Mystic cabins weren\u2019t evacuated. Other friends asked if their kids\u2019 camps were in floodplains. I tried to explain. Yes, the event<a href=\"https:\/\/www.texastribune.org\/2025\/07\/05\/texas-hill-country-floods-warning-forecast-nws\/\"> was forecasted<\/a>. Climate change makes extreme flooding far more likely. Funding cuts to the National Weather Service strained<a href=\"https:\/\/www.bbc.com\/news\/articles\/clyndrwz00xo\"> early-warning communications<\/a>. Those are explanations you can wrap your head around.<\/p>\n\n\n\n<p>Then the <em>New York Times <\/em>reported that 19 cabins at Camp Mystic had recently been<a href=\"https:\/\/www.nytimes.com\/2025\/07\/12\/us\/texas-camp-mystic-flood-plain-maps.html\"> removed from official federal flood zones<\/a>. That\u2019s what\u2019s harder to explain \u2026 and to understand. Cabins existed in a mapped floodway \u2014 a place where flood velocities are known to be high \u2014 but instead of investing in improving emergency plans or early warnings systems, engineering firms were contracted<a href=\"https:\/\/www.aol.com\/under-water-femas-outdated-flood-090000584.html\"> to contest FEMA\u2019s maps<\/a> to reduce insurance costs and allow expansion.<\/p>\n\n\n\n<p>As the U.S. debates the demerits of gerrymandering and its degradation to democracy, political districts aren\u2019t the only lines being unfairly redrawn. The Federal Emergency Management Agency (FEMA) maintains maps of areas that have a high risk of flooding. Across the country, these floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger. Why? How? Do redrawn flood maps always reflect flood risk accurately, or do some paint a picture of politics, money, and power?<\/p>\n\n\n\n<p>FEMA regulatory floodplain maps are designed to restrict development and set insurance rates. In other words, if your house is within a floodplain, your home insurance will cost more. Or if you\u2019re a developer wanting to build an apartment complex on land in a floodplain, your building costs may be higher.<\/p>\n\n\n\n<div class=\"gb-element-56227fd0\">\n<figure>\n<img loading=\"lazy\" decoding=\"async\" width=\"544\" height=\"433\" class=\"gb-media-68ebd40f\" alt=\"\" src=\"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/tellman-beth-white-house-1.webp\" title=\"tellman-beth-white-house\"\/>\n\n\n\n<figcaption class=\"gb-text\">Beth Tellman joined the The White House Flood Technology Innovation Roundtable in January to discuss the development of innovative technology solutions for flood monitoring and response in partnership with state and local governments. Photo courtesy of Beth Tellman<\/figcaption>\n<\/figure>\n<\/div>\n\n\n\n<p>It\u2019s possible to contest the maps through a process called<a href=\"https:\/\/www.fema.gov\/flood-maps\/change-your-flood-zone\"> Letters of Map Change<\/a>, or LOMCs. If a community or property owner believes their home, building, or neighborhood shouldn\u2019t be in a FEMA-mapped floodplain, they can contest it. That takes supporting documentation from a registered engineer to negate the FEMA map \u2014 and that costs money. Property owners can elevate the structure, infill the property, or build flood mitigation infrastructure, like a levee, and the structure can be removed from FEMA\u2019s regulatory floodplain. These exemptions are approved almost 90 percent of time, and more than 420,000 exemptions have been granted since 1985.<\/p>\n\n\n\n<p>Political scientists, geographers, and<a href=\"https:\/\/cup.columbia.edu\/book\/underwater\/9780231190275\/\"> sociologists<\/a> have found that official request of edits to FEMA maps to revise floodplain maps occur more frequently in wealthier, whiter communities. Cumulatively from 2006\u201319, FEMA\u2019s changes to the regulatory floodplain resulted in a net decrease of the 1.4 million properties in the regulatory FEMA flood zone. This disproportionately affected Black and Hispanic communities and resulted in a reduction in insurance coverage in these communities.<\/p>\n\n\n\n<p>As property owners and real estate developers initiate changes in flood maps, they are directly impacting underserved communities \u2014 or in the case of Camp Mystic, 27 children\u2019s lives that can\u2019t be replaced. These changes may seem benign on paper, but the practice of moving back the lines on a flood map is both increasing inequities and putting lives at risk.<\/p>\n\n\n\n<p>Usually these changes are justified, like when new, better, elevation information is available, or a new, major levee protects a neighborhood and reduces flood risk. But sometimes they\u2019re not. For example, in 2020, Houston-based civic action group Residents Against Flooding partnered with hydrologist Steven Emerman to investigate a LOMC that allowed a 900-person residence to be built on a former golf course.<\/p>\n\n\n\n<p>In 2015, golf course owner MetroNational commissioned an engineering firm for a LOMC before selling the property to developer Meritage Homes. It showed a channel funneling water uphill to prevent reaching the development and claiming that the property was two meters higher than base flood elevation. When Hurricane Harvey hit in August 2017, the development flooded.<\/p>\n\n\n\n<p>To be sure, FEMA map edits can be legitimate and improve accuracy \u2014 and have social benefits like reducing insurance premiums for underserved communities. But how can we know if shrinking the floodplain is a true reflection of less flood risk? Satellite images.<\/p>\n\n\n\n<p><a href=\"https:\/\/beth-tellman.github.io\/\">Using satellite imagery<\/a>, we\u2019re currently investigating if purported flood mitigation protected the properties in question in the LOMCs, and we\u2019re tracking if local flood mitigation infrastructure pushed flooding onto other, potentially underserved, communities downstream.<\/p>\n\n\n\n<div class=\"gb-element-af889525 wide-1200\">\n<figure class=\"wp-block-video\"><video autoplay loop muted poster=\"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding-map.webp\" src=\"https:\/\/nelson-public-files.s3.us-east-1.amazonaws.com\/commons\/texas-flooding-animation.mp4\" playsinline><track src=\"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flood-animation-description3.vtt\" label=\"Flood animation description\" srclang=\"en\" kind=\"descriptions\"\/><\/video><figcaption class=\"wp-element-caption\">This animation shows areas of flooding that occurred in Texas on July 4, 2025, using data from <a href=\"https:\/\/www.floodbase.com\/\">Floodbase<\/a>, a flood-mapping tool co-founded by Beth Tellman. Note: Map shows areas with estimated flooding. Localized flooding may be underrepresented.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<p>Our next step, which is currently under way, is to build a time series database of FEMA floodplain changes and an accompanying satellite-based history. We\u2019re checking to see if there was flooding in areas that, at least on paper, should have been free of flood risk. Our goal is to identify where there might be hidden flood risk that deserves a second look. From there, we can inform policy changes to the FEMA flood hazard mapping guidelines and the National Flood Insurance Program to make sure it protects humans \u2014 not just urban development.<\/p>\n\n\n\n<p>This study will take two years. But there are steps you can take now to keep your community safe. Here\u2019s how. First, every time a large change is made to a FEMA floodplain map through a LOMC, it has to be published in two local newspapers and the<a href=\"https:\/\/www.federalregister.gov\/documents\/2024\/02\/16\/2024-03263\/changes-in-flood-hazard-determinations\"> federal register<\/a>. Then, within 90 days of publication, you can<a href=\"https:\/\/www.fema.gov\/sites\/default\/files\/documents\/fema_appeals-comments-info-property-owners.pdf\"> submit comments<\/a> to your local floodplain manager if you disagree. FEMA also<a href=\"https:\/\/msc.fema.gov\/portal\/resources\/lomc\"> publishes approved changes<\/a> every two weeks, and you can search to see where it\u2019s been done in your community.<\/p>\n\n\n\n<p>In instances where floodplain maps are out of date, overpredict risk, and unnecessarily increase insurance premiums, certainly they should be revised. But since flood exposure is increasing as we urbanize and warm the planet, it\u2019s important we don\u2019t shrink the floodplain and imbue a false sense of security when the risk is real.<\/p>\n\n\n\n<p>In Wisconsin alone, there have been 17,666 Letters of Map Change. How many of those are justified? For the hundreds of thousands of buildings removed from the FEMA floodplain over the past 20 years, how many Camp Mystic stories can we find \u2026 and how many tragedies can we prevent?<\/p>\n\n\n\n<p><em>Thanks to Seth Bryant, who leads LOMC&nbsp;analysis on our lab\u2019s NSF Eager project, and co-investigators Saurabh Kaushik and Jon Sullivan who will make the project possible.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flood risk lines are designed to keep us safe. What happens when they can be bought?<\/p>\n","protected":false},"author":8,"featured_media":49880,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[44,49,51,34],"tags":[35,50],"post_template":[],"class_list":["post-49877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate","category-health","category-policy","category-water","tag-fall-2025","tag-reflection"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The New Gerrymander: Flood Maps | The Commons Magazine<\/title>\n<meta name=\"description\" content=\"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The New Gerrymander: Flood Maps | The Commons Magazine\" \/>\n<meta property=\"og:description\" content=\"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/\" \/>\n<meta property=\"og:site_name\" content=\"The Commons\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/NelsonInstitute\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-15T09:10:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-13T21:32:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Beth Tellman\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Beth Tellman\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/\"},\"author\":{\"name\":\"Beth Tellman\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#\\\/schema\\\/person\\\/d94619d24a6d6001ad0bd3514b1b64f0\"},\"headline\":\"The New Gerrymander: Flood Maps\",\"datePublished\":\"2025-09-15T09:10:00+00:00\",\"dateModified\":\"2026-04-13T21:32:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/\"},\"wordCount\":1241,\"publisher\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/texas-flooding.webp\",\"keywords\":[\"Fall 2025\",\"Reflection\"],\"articleSection\":[\"Climate\",\"Health\",\"Policy\",\"Water\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/\",\"name\":\"The New Gerrymander: Flood Maps | The Commons Magazine\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/texas-flooding.webp\",\"datePublished\":\"2025-09-15T09:10:00+00:00\",\"dateModified\":\"2026-04-13T21:32:56+00:00\",\"description\":\"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#primaryimage\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/texas-flooding.webp\",\"contentUrl\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/texas-flooding.webp\",\"width\":1920,\"height\":1080,\"caption\":\"Flooded Texas neighborhood with homes submerged in water, trees partially underwater, and a rescue boat moving through the streets.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/the-new-gerrymander-flood-maps\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The New Gerrymander: Flood Maps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#website\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/\",\"name\":\"The Commons\",\"description\":\"UW\u2013Madison\u2019s quarterly environmental magazine from the Nelson Institute\",\"publisher\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#organization\",\"name\":\"The Commons Magazine\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/wrm60-5.webp\",\"contentUrl\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/wp-content\\\/uploads\\\/wrm60-5.webp\",\"width\":1200,\"height\":800,\"caption\":\"The Commons Magazine\"},\"image\":{\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/NelsonInstitute\\\/\",\"https:\\\/\\\/www.instagram.com\\\/nelsoninstitute\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/nelsoninstitute\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/nelson-institute-for-environmental-studies\",\"https:\\\/\\\/www.flickr.com\\\/photos\\\/200678372@N03\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/#\\\/schema\\\/person\\\/d94619d24a6d6001ad0bd3514b1b64f0\",\"name\":\"Beth Tellman\",\"description\":\"Beth Tellman is an assistant professor at the Nelson Institute for Environmental Studies and researcher in its Center for Sustainability and the Global Environment. She is also the cofounder and chief science officer at Floodbase, an AI platform for insuring uncovered flood risk.\",\"url\":\"https:\\\/\\\/nelson.wisc.edu\\\/the-commons\\\/author\\\/btellman\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"The New Gerrymander: Flood Maps | The Commons Magazine","description":"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/","og_locale":"en_US","og_type":"article","og_title":"The New Gerrymander: Flood Maps | The Commons Magazine","og_description":"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.","og_url":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/","og_site_name":"The Commons","article_publisher":"https:\/\/www.facebook.com\/NelsonInstitute\/","article_published_time":"2025-09-15T09:10:00+00:00","article_modified_time":"2026-04-13T21:32:56+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp","type":"image\/webp"}],"author":"Beth Tellman","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Beth Tellman","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#article","isPartOf":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/"},"author":{"name":"Beth Tellman","@id":"https:\/\/nelson.wisc.edu\/the-commons\/#\/schema\/person\/d94619d24a6d6001ad0bd3514b1b64f0"},"headline":"The New Gerrymander: Flood Maps","datePublished":"2025-09-15T09:10:00+00:00","dateModified":"2026-04-13T21:32:56+00:00","mainEntityOfPage":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/"},"wordCount":1241,"publisher":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/#organization"},"image":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#primaryimage"},"thumbnailUrl":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp","keywords":["Fall 2025","Reflection"],"articleSection":["Climate","Health","Policy","Water"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/","url":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/","name":"The New Gerrymander: Flood Maps | The Commons Magazine","isPartOf":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/#website"},"primaryImageOfPage":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#primaryimage"},"image":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#primaryimage"},"thumbnailUrl":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp","datePublished":"2025-09-15T09:10:00+00:00","dateModified":"2026-04-13T21:32:56+00:00","description":"Across the United States, floodplain maps are changed every day, sometimes in ways that could hide true flood risk and put people in danger.","breadcrumb":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#primaryimage","url":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp","contentUrl":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/texas-flooding.webp","width":1920,"height":1080,"caption":"Flooded Texas neighborhood with homes submerged in water, trees partially underwater, and a rescue boat moving through the streets."},{"@type":"BreadcrumbList","@id":"https:\/\/nelson.wisc.edu\/the-commons\/the-new-gerrymander-flood-maps\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/nelson.wisc.edu\/the-commons\/"},{"@type":"ListItem","position":2,"name":"The New Gerrymander: Flood Maps"}]},{"@type":"WebSite","@id":"https:\/\/nelson.wisc.edu\/the-commons\/#website","url":"https:\/\/nelson.wisc.edu\/the-commons\/","name":"The Commons","description":"UW\u2013Madison\u2019s quarterly environmental magazine from the Nelson Institute","publisher":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/nelson.wisc.edu\/the-commons\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/nelson.wisc.edu\/the-commons\/#organization","name":"The Commons Magazine","url":"https:\/\/nelson.wisc.edu\/the-commons\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/nelson.wisc.edu\/the-commons\/#\/schema\/logo\/image\/","url":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/wrm60-5.webp","contentUrl":"https:\/\/nelson.wisc.edu\/the-commons\/wp-content\/uploads\/wrm60-5.webp","width":1200,"height":800,"caption":"The Commons Magazine"},"image":{"@id":"https:\/\/nelson.wisc.edu\/the-commons\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/NelsonInstitute\/","https:\/\/www.instagram.com\/nelsoninstitute","https:\/\/www.youtube.com\/user\/nelsoninstitute","https:\/\/www.linkedin.com\/company\/nelson-institute-for-environmental-studies","https:\/\/www.flickr.com\/photos\/200678372@N03\/"]},{"@type":"Person","@id":"https:\/\/nelson.wisc.edu\/the-commons\/#\/schema\/person\/d94619d24a6d6001ad0bd3514b1b64f0","name":"Beth Tellman","description":"Beth Tellman is an assistant professor at the Nelson Institute for Environmental Studies and researcher in its Center for Sustainability and the Global Environment. She is also the cofounder and chief science officer at Floodbase, an AI platform for insuring uncovered flood risk.","url":"https:\/\/nelson.wisc.edu\/the-commons\/author\/btellman\/"}]}},"_links":{"self":[{"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/posts\/49877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/comments?post=49877"}],"version-history":[{"count":42,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/posts\/49877\/revisions"}],"predecessor-version":[{"id":51934,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/posts\/49877\/revisions\/51934"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/media\/49880"}],"wp:attachment":[{"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/media?parent=49877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/categories?post=49877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/tags?post=49877"},{"taxonomy":"post_template","embeddable":true,"href":"https:\/\/nelson.wisc.edu\/the-commons\/wp-json\/wp\/v2\/post_template?post=49877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}