{"id":467347,"date":"2026-08-31T10:33:56","date_gmt":"2026-08-31T17:33:56","guid":{"rendered":"https:\/\/climatescience.press\/?p=467347"},"modified":"2026-08-31T10:33:59","modified_gmt":"2026-08-31T17:33:59","slug":"colorado-river-crisis-brings-major-cuts-for-california-nevada-and-arizona","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=467347","title":{"rendered":"Colorado River Crisis Brings Major Cuts for California, Nevada, and Arizona"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"482\" data-attachment-id=\"467348\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=467348\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?fit=1536%2C1024&amp;ssl=1\" data-orig-size=\"1536,1024\" data-comments-opened=\"1\" data-image-title=\"0 ChatGPT Colorado River Crisis Brings Major Cuts for California, Nevada, and Arizona\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?fit=723%2C482&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?resize=723%2C482&#038;ssl=1\" alt=\"\" class=\"wp-image-467348\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?resize=640%2C427&amp;ssl=1 640w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?w=1536&amp;ssl=1 1536w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?w=1446&amp;ssl=1 1446w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">From <a href=\"https:\/\/wattsupwiththat.com\/2026\/08\/29\/colorado-river-crisis-brings-major-cuts-for-california-nevada-and-arizona\/\">Watts Up With That?<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Phoenix is planning to dip into its emergency water bank as a result.<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/legalinsurrection.com\/2026\/08\/colorado-river-crisis-brings-major-cuts-for-california-nevada-and-arizona\/\">From Legal Insurrection<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Posted by&nbsp;<a href=\"https:\/\/legalinsurrection.com\/author\/leslieeastman\/\">Leslie Eastman<\/a>&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"362\" data-attachment-id=\"467351\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=467351\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?fit=1024%2C512&amp;ssl=1\" data-orig-size=\"1024,512\" data-comments-opened=\"1\" data-image-title=\"image\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?fit=723%2C362&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?resize=723%2C362&#038;ssl=1\" alt=\"\" class=\"wp-image-467351\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?w=1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?resize=300%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?resize=768%2C384&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/image-166.png?resize=640%2C320&amp;ssl=1 640w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Federal officials are ordering the West to live within the limits of a Colorado River system drained by decades of over- allocation, drought, and policy delay.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">California, Nevada, and Arizona allocations will be cut a c<a href=\"https:\/\/www.pbs.org\/newshour\/nation\/federal-officials-announce-water-cuts-as-colorado-river-supplies-continue-to-plunge\" target=\"_blank\" rel=\"noopener\">ombined 1.25 million acre-fee<\/a>t annually for the next two years, while the upstream states evade mandatory reductions for now.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Arizona will see the biggest cuts, while states upstream \u2014 Colorado, Utah, Wyoming and New Mexico \u2014 do not face any for now.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Meanwhile neighboring Mexico will reduce its intake by 250,000 acre-feet (about 310 million cubic meters) under a U.S.-Mexico treaty.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cWe\u2019ve been in this 26-year prolonged drought period,\u201d said Andrea Travnicek, the Interior Department\u2019s assistant secretary for water and science. \u201cWe continue to see a prolonged drought in our future. So continuing to work together as a whole within the basin is going to be extremely important.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The current rules governing the use of the river\u2019s water are set to expire in October, and the seven states have been unable to reach a consensus on sharing it over the long term.<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"embed-x\"><blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Federal officials announced sharp water cuts for the next two years on Friday for three Western states that rely on the imperiled Colorado River.<br><br>Years of overuse combined with drought and rising temperatures due to climate change have depleted the country&#39;s two largest\u2026 <a href=\"https:\/\/t.co\/OsVdsaFKMN\">pic.twitter.com\/OsVdsaFKMN<\/a><\/p>&mdash; ABC7 Eyewitness News (@ABC7) <a href=\"https:\/\/x.com\/ABC7\/status\/2091352229806473244?ref_src=twsrc%5Etfw\">August 23, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Arizona will see the largest cuts, with annual water deliveries reduced by 31%.&nbsp;As a result, the city of Phoenix is planning to dip into its&nbsp;<a href=\"https:\/\/www.12news.com\/article\/news\/local\/phoenix-taps-emergency-water-bank-amid-severe-colorado-river-cuts\/75-72a36663-638e-4b67-9a9b-f67ec35f4e6f\" target=\"_blank\" rel=\"noopener\">emergency water bank<\/a>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Arizona\u2019s large cut results from agreements and court fights over water rights more than 100 years ago.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The result was that Arizona got the lowest priority for Colorado water in times of shortages, and California the highest priority. That\u2019s what the state is living with today.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The City of Phoenix has been preparing for this day.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The city\u2019s plan starts with dipping into an emergency water bank for the first time since its creation more than 35 years ago.<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"embed-x\"><blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Arizona will lose 31% of its Colorado River water over the next two years \u2014 the largest cuts of any state. Phoenix is now tapping its emergency water bank for the first time in more than 35 years to keep water flowing to residents.<a href=\"https:\/\/t.co\/pb7ZUzlE0X\">https:\/\/t.co\/pb7ZUzlE0X<\/a> <a href=\"https:\/\/t.co\/ZBaqR20f5K\">pic.twitter.com\/ZBaqR20f5K<\/a><\/p>&mdash; 12 News (@12News) <a href=\"https:\/\/x.com\/12News\/status\/2091173160754221119?ref_src=twsrc%5Etfw\">August 22, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The cuts could&nbsp;<a href=\"https:\/\/abc7.com\/post\/federal-officials-announce-water-cuts-colorado-river-supplies-continue-plunge\/19718459\/?userab=kfsn_content_recs-582*variant_a_control_kfsn-2512%2Ckabc_content_recs-577*variant_c_trending-2482%2Cwls_content_recs-584*variant_a_control_wls-2516%2Cwtvd_content_recs-585*variant_a_control_wtvd-2518%2Cktrk_content_recs-587*variant_a_control_ktrk-2522%2Cwpvi_content_recs-586*variant_a_control_wpvi-2520%2Cotv_web_content_rec-539*variant_c_trending-2268%2Cotv_web_topic-580*variant_b_topic_redesign-2509%2Cotv_search_page_design_unification-546*variant_b_search_redesign-2300%2Cabcn_popular_reads_exp_followup-648*variant_c_autotagswpopularity-3458%2Cotv_mobile_web_content_recs-639*variant_a_control-3429%2Ckgo_content_recs-583*variant_b_trending_kgo-2515%2Cotvlink_abcnnav-576*variant_b_local-2479\" target=\"_blank\" rel=\"noopener\">significantly affect<\/a><a href=\"https:\/\/abc7.com\/post\/federal-officials-announce-water-cuts-colorado-river-supplies-continue-plunge\/19718459\/?userab=kfsn_content_recs-582*variant_a_control_kfsn-2512%2Ckabc_content_recs-577*variant_c_trending-2482%2Cwls_content_recs-584*variant_a_control_wls-2516%2Cwtvd_content_recs-585*variant_a_control_wtvd-2518%2Cktrk_content_recs-587*variant_a_control_ktrk-2522%2Cwpvi_content_recs-586*variant_a_control_wpvi-2520%2Cotv_web_content_rec-539*variant_c_trending-2268%2Cotv_web_topic-580*variant_b_topic_redesign-2509%2Cotv_search_page_design_unification-546*variant_b_search_redesign-2300%2Cabcn_popular_reads_exp_followup-648*variant_c_autotagswpopularity-3458%2Cotv_mobile_web_content_recs-639*variant_a_control-3429%2Ckgo_content_recs-583*variant_b_trending_kgo-2515%2Cotvlink_abcnnav-576*variant_b_local-2479\" target=\"_blank\" rel=\"noopener\">&nbsp;Nevada<\/a>, which has been enjoying robust real estate development as Californians flee the Golden State.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">In Southern Nevada, Kyle Roerink, senior adviser at the conservation group Great Basin Water Network, said efforts to build a new airport and shopping malls and some public land sales have not progressed, reflecting the dire hydrology inked in the federal documents. Further cuts could slow real estate development in metro Las Vegas, he said.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">River water levels are so low that hydropower plants may no&nbsp;<a href=\"https:\/\/www.pbs.org\/newshour\/nation\/arizona-california-and-nevada-would-share-cuts-under-federal-proposal-for-colorado-river\" target=\"_blank\" rel=\"noopener\">longer generate power<\/a>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The river\u2019s health often is determined by how much water is in Lake Mead and Lake Powell, the two largest human-made reservoirs in the U.S. Together, the reservoirs are at their lowest point since they began filling, according to a recent paper by Colorado River experts, and approaching levels where they could no longer produce hydropower.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Hoover Dam could lose the ability to generate hydropower if Lake Mead falls below its minimum power pool, reported as&nbsp;<a href=\"https:\/\/spectrumlocalnews.com\/ca\/california\/weather\/2023\/04\/13\/exclusive-continuing-coverage--colorado-river-in-crisis\" target=\"_blank\" rel=\"noopener\">roughly 950 feet above sea level<\/a>. At lower elevations, there is not enough usable water intake to operate the turbines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It gives a whole new meaning to \u201c<a href=\"https:\/\/spectrumlocalnews.com\/ca\/california\/weather\/2023\/04\/13\/exclusive-continuing-coverage--colorado-river-in-crisis\" target=\"_blank\" rel=\"noopener\">Deadpool<\/a>\u201c.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The minimum level to generate power is 950 feet, and if the level drops to 895 feet, then that\u2019s the dreaded Deadpool.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deadpool is the point when water can no longer flow downstream from the dam, and if that happens, then the system as we know it fails.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Lake Mead\u2019s reported water-surface elevation is&nbsp;<a href=\"https:\/\/www.usbr.gov\/lc\/region\/g4000\/hourly\/lake-mead.html\" target=\"_blank\" rel=\"noopener\">1,039 feet above sea level<\/a>, about 190 feet below full pool and approximately 27% full.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Even though this plan is final, the&nbsp;<a href=\"https:\/\/www.cpr.org\/2026\/08\/21\/colorado-no-mandatory-cuts-colorado-river-rules\/\" target=\"_blank\" rel=\"noopener\">threat of litigation looms<\/a>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Tribes, states or other groups are now able to sue Reclamation over its final plan, and could argue that the agency erred in how it conducted its environmental review.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some tribes, like the Gila River Indian Community (GRIC) in Arizona, have indicated that drastic federal water cuts could force a lawsuit. Many tribes in the basin also have water rights on paper that have never been fully realized.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">GRIC Gov. Stephen Roe Lewis said that while litigation is certainly not the community\u2019s first choice, it is an option.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cThe community \u2026 will not hesitate to turn to the courts to protect our interests and our future,\u201d he said at a&nbsp;<a href=\"https:\/\/www.colorado.edu\/center\/gwc\/media\/842\" target=\"_blank\" rel=\"noopener\">CU-Boulder water conference in June<\/a>.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Perhaps the anticipated&nbsp;<a href=\"https:\/\/www.aljazeera.com\/news\/2026\/8\/20\/governments-brace-for-historic-el-nino-impacts-on-global-weather-extremes\" target=\"_blank\" rel=\"noopener\">historic El Ni\u00f1o&nbsp;<\/a>will bring the Southwest the rain and mountain snowpack needed to offer the Colorado River system some breathing room.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But precipitation alone will not solve a crisis worsened by decades of over-allocation, political procrastination, and an aversion to building the reservoirs, recharge projects, and other infrastructure needed to capture water when it actually arrives.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The real test will be whether Western leaders can move beyond emergency rationing and litigation long enough to prepare for both the next wet cycle and the inevitable dry one.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finally, and as a much needed reminder, severe droughts have occurred periodically in this region of the US\u2026.long before Henry Ford invented the car.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"embed-x\"><blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Look carefully at this figure.<br><br>Tree-ring reconstructions show the American West experienced megadroughts lasting hundreds of years long before industrial CO\u2082 emissions. Cook et al. report that Medieval drought conditions persisted, with few interruptions, for \u201ca few hundred\u2026 <a href=\"https:\/\/t.co\/jgFEktkKQv\">https:\/\/t.co\/jgFEktkKQv<\/a> <a href=\"https:\/\/t.co\/dWd5QwARgF\">pic.twitter.com\/dWd5QwARgF<\/a><\/p>&mdash; Dr. Matthew M. Wielicki (@MatthewWielicki) <a href=\"https:\/\/x.com\/MatthewWielicki\/status\/2092311668097479092?ref_src=twsrc%5Etfw\">August 25, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>California, Nevada, and Arizona allocations will be cut a combined 1.25 million acre-feet annually for the next two years, while the upstream states evade mandatory reductions for now.<\/p>\n<p>Arizona will see the biggest cuts, while states upstream \u2014 Colorado, Utah, Wyoming and New Mexico \u2014 do not face any for now.<\/p>\n","protected":false},"author":121246920,"featured_media":467348,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"California, Nevada, and Arizona allocations will be cut a combined 1.25 million acre-feet annually for the next two years, while the upstream states evade mandatory reductions for now.\n\nArizona will see the biggest cuts, while states upstream \u2014 Colorado, Utah, Wyoming and New Mexico \u2014 do not face any for now.","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691824274,691819348,691826834,691845071,691844407],"class_list":["post-467347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-colorado-river","tag-drought","tag-lake-mead","tag-water-allocation","tag-water-use","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1XzR","jetpack-related-posts":[{"id":464604,"url":"https:\/\/climatescience.press\/?p=464604","url_meta":{"origin":467347,"position":0},"title":"Western water fight also impacts power generation","author":"uwe.roland.gross","date":"08\/21\/2026","format":false,"excerpt":"Back in May, Lake Mead had already dropped to 1,050 feet above sea level, which was 25 feet below its critical level of 1,075 feet. The huge reservoir, held in place by Hoover Dam, was just below 1,040 feet as of August 13. When the lake level falls to 1,035\u2026","rel":"","context":"In \"acres of farmland\"","block_context":{"text":"acres of farmland","link":"https:\/\/climatescience.press\/?tag=acres-of-farmland"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Hoover-dam-roads-and-power-lines.jpg?fit=1200%2C802&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Hoover-dam-roads-and-power-lines.jpg?fit=1200%2C802&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Hoover-dam-roads-and-power-lines.jpg?fit=1200%2C802&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Hoover-dam-roads-and-power-lines.jpg?fit=1200%2C802&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Hoover-dam-roads-and-power-lines.jpg?fit=1200%2C802&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":440644,"url":"https:\/\/climatescience.press\/?p=440644","url_meta":{"origin":467347,"position":1},"title":"Ancient Lake Spillover: New Evidence Shows How the Colorado River Carved the Grand Canyon","author":"uwe.roland.gross","date":"04\/20\/2026","format":false,"excerpt":"Geologists broadly agree the modern Grand Canyon (the deep, river-integrated version we see today) is relatively \"young\" in geologic terms\u2014primarily carved starting ~5\u20136 million years ago. Earlier ideas of a 70-million-year-old canyon (from the Laramide orogeny era) have largely been set aside in favor of this younger timeline.","rel":"","context":"In \"Colorado River\"","block_context":{"text":"Colorado River","link":"https:\/\/climatescience.press\/?tag=colorado-river"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Ancient-Lake-Spillover-New-Evidence-Shows-How-the-Colorado-River-Carved-the-Grand-Canyon.jpg?fit=1168%2C784&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Ancient-Lake-Spillover-New-Evidence-Shows-How-the-Colorado-River-Carved-the-Grand-Canyon.jpg?fit=1168%2C784&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Ancient-Lake-Spillover-New-Evidence-Shows-How-the-Colorado-River-Carved-the-Grand-Canyon.jpg?fit=1168%2C784&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Ancient-Lake-Spillover-New-Evidence-Shows-How-the-Colorado-River-Carved-the-Grand-Canyon.jpg?fit=1168%2C784&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Ancient-Lake-Spillover-New-Evidence-Shows-How-the-Colorado-River-Carved-the-Grand-Canyon.jpg?fit=1168%2C784&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":463261,"url":"https:\/\/climatescience.press\/?p=463261","url_meta":{"origin":467347,"position":2},"title":"Record Low Lake Mead: \u201cMillennium Drought\u201d or Inevitable Result of Demand Exceeding Supply?","author":"uwe.roland.gross","date":"08\/16\/2026","format":false,"excerpt":"The Colorado River Compact (1922) and subsequent Law of the River allocated more water than the long-term average supply supports. Early-20th-century flows were unusually high; allocations (roughly 15 million acre-feet split between Upper and Lower Basins, plus obligations to Mexico) assumed higher yields that have not materialized on average.","rel":"","context":"In \"agriculture\"","block_context":{"text":"agriculture","link":"https:\/\/climatescience.press\/?tag=agriculture"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Record-Low-Lake-Mead-Millennium-Drought-or-Inevitable-Result-of-Demand-Exceeding-Supply.jpg?fit=1168%2C784&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Record-Low-Lake-Mead-Millennium-Drought-or-Inevitable-Result-of-Demand-Exceeding-Supply.jpg?fit=1168%2C784&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Record-Low-Lake-Mead-Millennium-Drought-or-Inevitable-Result-of-Demand-Exceeding-Supply.jpg?fit=1168%2C784&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Record-Low-Lake-Mead-Millennium-Drought-or-Inevitable-Result-of-Demand-Exceeding-Supply.jpg?fit=1168%2C784&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-Record-Low-Lake-Mead-Millennium-Drought-or-Inevitable-Result-of-Demand-Exceeding-Supply.jpg?fit=1168%2C784&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":241093,"url":"https:\/\/climatescience.press\/?p=241093","url_meta":{"origin":467347,"position":3},"title":"The California Drought is Over. Definitively.","author":"uwe.roland.gross","date":"01\/23\/2023","format":false,"excerpt":"After over a month of torrential rain and massive mountain snow, the drought is over in California.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1001.png?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1001.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1001.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1001.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1001.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":242195,"url":"https:\/\/climatescience.press\/?p=242195","url_meta":{"origin":467347,"position":4},"title":"California Still in Drought?\u00a0 Yes, No and Maybe \u2014 Part 2","author":"uwe.roland.gross","date":"01\/29\/2023","format":false,"excerpt":"In speaking to a colleague recently, she presented Lake Mead water level as a \u201cproof\u201d of Global Warming\/Climate Change.\u00a0 The Lake Mead watershed only includes a tiny bit of California.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1281.png?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1281.png?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1281.png?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1281.png?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/01\/image-1281.png?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":286535,"url":"https:\/\/climatescience.press\/?p=286535","url_meta":{"origin":467347,"position":5},"title":"Colorado River Flow Data Disproves \u201cClimate Change Warming\u201d Computer Model Flow Reduction Claims","author":"uwe.roland.gross","date":"11\/04\/2023","format":false,"excerpt":"The next question is, does climate change even predict future reductions of precipitation over the Colorado River watershed? The following plot shows an average of 183 climate model simulations of average yearly precipitation in an area approximating the Colorado River watershed. The models suggest a slight increase in total precipitation\u2026","rel":"","context":"In \"climate change warming\u201d\"","block_context":{"text":"climate change warming\u201d","link":"https:\/\/climatescience.press\/?tag=climate-change-warming"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0horseshoe-bend-iconic_s.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0horseshoe-bend-iconic_s.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0horseshoe-bend-iconic_s.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0horseshoe-bend-iconic_s.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0horseshoe-bend-iconic_s.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/08\/0-ChatGPT-Colorado-River-Crisis-Brings-Major-Cuts-for-California-Nevada-and-Arizona.png?fit=1536%2C1024&ssl=1","_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/467347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=467347"}],"version-history":[{"count":13,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/467347\/revisions"}],"predecessor-version":[{"id":467362,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/467347\/revisions\/467362"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/467348"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=467347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=467347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=467347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}