{"id":8889,"date":"2022-01-12T10:36:17","date_gmt":"2022-01-12T10:36:17","guid":{"rendered":"https:\/\/afonyddcymru.cambrianweb.dev\/gorlifoedd-storm-cyfun-csos\/"},"modified":"2026-10-17T22:43:57","modified_gmt":"2026-10-17T21:43:57","slug":"gorlifoedd-storm-cyfun-csos","status":"publish","type":"post","link":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/gorlifoedd-storm-cyfun-csos\/","title":{"rendered":"Gorlifoedd Storm Cyfun (CSOs)"},"content":{"rendered":"<p><div class=\"et_d4_element et_pb_section et_pb_section_0  et_pb_css_mix_blend_mode et_section_regular et_block_section\" >\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_d4_element et_pb_row et_pb_row_0  et_pb_css_mix_blend_mode et_block_row\">\n\t\t\t\t<div class=\"et_d4_element et_pb_column_3_5 et_pb_column et_pb_column_0  et_pb_css_mix_blend_mode et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_0  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p>Mae dros 2,000 o orlifoedd storm wedi'u caniat\u00e1u yng Nghymru. Maent yn cyflawni swyddogaeth iechyd cyhoeddus hanfodol, gan reoli'r mewnbwn ychwanegol i weithfeydd trin d?r gwastraff mewn <strong>cyfnodau o dywydd eithafol<\/strong>.<\/p>\n<p><\/p>\n<p>Yn \u00f4l y gyfraith, rhaid i gwmn\u00efau d?r sicrhau bod gorlifoedd storm ond yn gollwng d?r yn ystod cyfnodau o law trwm, pan fydd capasiti'r system garthffosiaeth gyfun wedi ei drechu oherwydd glaw a\/neu eira'n toddi. O dan yr amodau hyn, bydd y d?r a gaiff ei ollwng wedi\u2019i wanhau a dylai effaith y llwyth bacteriol ar y cwrs d?r sy'n ei dderbyn fod yn fach iawn. Er y gallant gyflwyno llygryddion eraill, nid yw gorlifoedd storm yn gyfrannwr sylweddol at lefelau maetholion yn y rhan fwyaf o afonydd Cymru.<\/p>\n<p><\/p>\n<p>Mae gorlifoedd storm yng Nghymru yn cael eu rheoleiddio gan Cyfoeth Naturiol Cymru (CNC), y corff sy'n pennu\u2019r amodau trwydded y mae\u2019n rhaid cydymffurfio \u00e2 hwy. Mae nifer y gollyngiadau a ganiateir o orlif yn dibynnu ar sensitifrwydd amgylcheddol y cwrs d?r y gwneir y gollyngiad iddo.<\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><div class=\"et_d4_element et_pb_column_2_5 et_pb_column et_pb_column_1  et_pb_css_mix_blend_mode et-last-child et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_image et_pb_image_0\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<a href=\"https:\/\/corporate.dwrcymru.com\/en\/community\/environment\/storm-overflow-map\"><span class=\"et_pb_image_wrap \"><img loading=\"lazy\" decoding=\"async\" width=\"1023\" height=\"825\" src=\"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map.jpg\" alt=\"\" title=\"Map ar gyfer gormodedd storm\" srcset=\"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map.jpg 1023w, https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map-300x242.jpg 300w, https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map-768x619.jpg 768w, https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map-980x790.jpg 980w, https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2024\/02\/WW-storm-overflow-map-480x387.jpg 480w\" sizes=\"(max-width: 1023px) 100vw, 1023px\" class=\"wp-image-6436\" \/><\/span><\/a>\n\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_1 et_clickable  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p>Mae gan D?r Cymru fap ar eu gwefan sy'n dangos gwybodaeth amser real am orlifoedd storm. Noder mai dim ond gorlifoedd sy'n gysylltiedig \u00e2 dyfroedd ymdrochi y mae hwn yn eu dangos \u2013 nid yw'n dangos holl orlifoedd storm D?r Cymru.<\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><div class=\"et_d4_element et_pb_section et_pb_section_1 et_hover_enabled  et_pb_css_mix_blend_mode et_section_regular section_has_divider et_pb_top_divider et_block_section\" >\n\t\t\t\t<div class=\"et_pb_top_inside_divider et-no-transition\"><\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_d4_element et_pb_row et_pb_row_1 et_hover_enabled  et_pb_css_mix_blend_mode et_block_row\">\n\t\t\t\t<div class=\"et_d4_element et_pb_column_4_4 et_pb_column et_pb_column_2  et_pb_css_mix_blend_mode et-last-child et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_2  et_pb_text_align_center et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><h3 style=\"text-align: left;\">Tasglu Gwella Ansawdd Afonydd Cymru<\/h3><\/div>\n\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_3  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p>Yn 2021, sefydlwyd \u201cTasglu Gwella Ansawdd Afonydd Cymru\u201d Llywodraeth Cymru i wella rheolaeth a rheoleiddio amgylcheddol gorlifoedd yng Nghymru. Mae Afonydd Cymru wedi gweithredu fel ymgynghorwyr annibynnol i\u2019r Tasglu hwn. O ganlyniad i waith y Tasglu, mae dros 99% o orlifoedd storm D?r Cymru bellach yn cael eu monitro (100% o rai Hafren Dyfrdwy), gan gofnodi nifer a hyd y gollyngiadau. Cyhoeddir y data hwn (data Monitro Hyd Digwyddiadau neu EDM) ar eu gwefan ac adroddir arno i Gyfoeth Naturiol Cymru.<\/p>\n<p><\/p>\n<p>Sicrhaodd y Tasglu hefyd ddiffiniad o law eithriadol y gellir ei ddefnyddio i reoleiddio gorlifoedd carthffosiaeth yng Nghymru yn ei erbyn. O ganlyniad, mae trwyddedau ar orlifoedd carthffosiaeth bellach yn orfodol yn gyfreithiol am y tro cyntaf<\/p>\n<p><\/p>\n<p>Mae D?r Cymru hefyd yn buddsoddi'n sylweddol i wella gorlifoedd storm (\u00a3140m 2020-2025 a \u00a3420m pellach wedi'i gynllunio ar gyfer 2025 -2030) gan ganolbwyntio yn gyntaf ar orlifoedd sy'n achosi'r niwed amgylcheddol mwyaf.<\/p>\n<p><\/p>\n<p>Er hyn, mae problemau'n parhau i effeithio ar afonydd Cymru a gorlifoedd storm. Datgelodd ymchwiliadau annibynnol yn 2023 dorri amodau trwyddedau hirdymor mewn rhai safleoedd, nifer fawr yr oedd Cyfoeth Naturiol Cymru yn gwbl ymwybodol ohonynt. Bu i Afonydd Cymru, trwy gydweithio gyda Peter Hammond, herio\u2019r diffyg prosesau rheoleiddio a oedd yn caniat\u00e1u'r gollyngiadau hyn. Yn 2023, sicrhawyd canllawiau diwygiedig i gwmn\u00efau d?r yng Nghymru i gydymffurfiaeth \u00e2 gofynion llif llawn i\u2019r gwaith trin. Rydym hefyd wedi galw am gryfhau pellach yn y system gynllunio i atal datblygiadau newydd rhag cael eu caniat\u00e1u lle nad yw gorlifoedd carthffosiaeth yn cael eu gweithredu\u2019n unol \u00e2 thrwydded nac yn cydymffurfio \u00e2\u2019r gwaith trin.<\/p>\n<p><\/p>\n<p>Hefyd, yn 2023, cafodd perfformiad amgylcheddol D?r Cymru ei israddio gan CNC o dair i ddwy seren oherwydd:<\/p>\n<p><\/p>\n<ul>\n<li>25 o ddigwyddiadau llygredd yn gysylltiedig \u00e2'r rhwydwaith carthffosiaeth<\/li>\n<li>5 ohonynt yn ddigwyddiadau llygredd \"difrifol\"<\/li>\n<li>Methiant D?r Cymru i gyflawni targedau ar hunan-adrodd digwyddiadau llygredd<\/li>\n<li>A'u methiant i gyflawni targedau amodau trwydded gollyngiadau<\/li>\n<\/ul><\/div>\n\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_4  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p><strong>Mwy o wybodaeth:<\/strong><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/corporate.dwrcymru.com\/en\/community\/environment\/storm-overflow-map\">D?r Cymru Map Gwybodaeth Gorlifoedd Storm Amser Real <\/a><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/Compliance%20Assessment%20of%20Welsh%20River%20SACs%20Against%20Phosphorus%20Targets\">Asesiad Cydymffurfiaeth Ardaloedd Cadwraeth Arbennig Afonydd Cymru yn erbyn Targedau Ffosfforws<\/a><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/naturalresources.wales\/about-us\/what-we-do\/our-roles-and-responsibilities\/water\/storm-overflows\/?lang=en#:~:text=In%20Wales%20there%20are%20over%202000%20permitted%20storm,been%20exceeded%20due%20to%20rainfall%20and%2For%20snow%20melt.\">Gorlifoedd Storm\u2013 CyfoethNaturiol Cymru\u00a0\u00a0 <\/a><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/www.gov.wales\/wales-better-river-quality-taskforce\">Tasglu Gwella Ansawdd Afonydd Cymru <\/a><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/afonyddcymru.cambrianweb.dev\/welsh-water-permit-breaches\/\">Adroddiad Newydd yn Dangos Mwy o Fethiannau D?r Gwastraff D?r Cymru \u2013 Afonydd Cymru, 19 Hydref \u00a02023.<\/a><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2023\/10\/FINAL_SUMMARY_Welsh_Water_Overview_WwTWs_Oct_17th_2023.pdf\">Adroddiad yr Athro Peter Hammond, 17 Hydref 2023<\/a><\/p>\n<p><\/p>\n<p>&nbsp;<\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mae Afonydd Cymru yn pryderu am bob dessun o oechyd. Gall CSOs fod yn un rheswm&#8230;.<\/p>\n","protected":false},"author":3,"featured_media":10737,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[60],"tags":[],"class_list":["post-8889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-datganiadau-sefyllfa"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru<\/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:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru\" \/>\n<meta property=\"og:description\" content=\"Mae Afonydd Cymru yn pryderu am bob dessun o oechyd. Gall CSOs fod yn un rheswm....\" \/>\n<meta property=\"og:url\" content=\"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/\" \/>\n<meta property=\"og:site_name\" content=\"Afonydd Cymru\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-12T10:36:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-17T21:43:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1602\" \/>\n\t<meta property=\"og:image:height\" content=\"1198\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Seth Johnson-Marshall\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Seth Johnson-Marshall\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/\"},\"author\":{\"name\":\"Seth Johnson-Marshall\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/#\\\/schema\\\/person\\\/4014068ab3f19d974bca1f2bd567d2bc\"},\"headline\":\"Gorlifoedd Storm Cyfun (CSOs)\",\"datePublished\":\"2022-01-12T10:36:17+00:00\",\"dateModified\":\"2026-10-17T21:43:57+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/\"},\"wordCount\":2200,\"image\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/20210505_182814-copy-ed.jpg\",\"articleSection\":[\"Datganiadau Sefyllfa\"],\"inLanguage\":\"cy-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/\",\"url\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/\",\"name\":\"Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/20210505_182814-copy-ed.jpg\",\"datePublished\":\"2022-01-12T10:36:17+00:00\",\"dateModified\":\"2026-10-17T21:43:57+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/#\\\/schema\\\/person\\\/4014068ab3f19d974bca1f2bd567d2bc\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#breadcrumb\"},\"inLanguage\":\"cy-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"cy-GB\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#primaryimage\",\"url\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/20210505_182814-copy-ed.jpg\",\"contentUrl\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/20210505_182814-copy-ed.jpg\",\"width\":1602,\"height\":1198},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/combined-storm-overflows-csos\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Gorlifoedd Storm Cyfun (CSOs)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/#website\",\"url\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/\",\"name\":\"Afonydd Cymru\",\"description\":\"Caring for Welsh Rivers\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"cy-GB\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/#\\\/schema\\\/person\\\/4014068ab3f19d974bca1f2bd567d2bc\",\"name\":\"Seth Johnson-Marshall\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"cy-GB\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g\",\"caption\":\"Seth Johnson-Marshall\"},\"url\":\"https:\\\/\\\/afonyddcymru.cambrianweb.dev\\\/cy\\\/author\\\/seth-johnson-marshall\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru","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:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/","og_locale":"cy_GB","og_type":"article","og_title":"Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru","og_description":"Mae Afonydd Cymru yn pryderu am bob dessun o oechyd. Gall CSOs fod yn un rheswm....","og_url":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/","og_site_name":"Afonydd Cymru","article_published_time":"2022-01-12T10:36:17+00:00","article_modified_time":"2026-10-17T21:43:57+00:00","og_image":[{"width":1602,"height":1198,"url":"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg","type":"image\/jpeg"}],"author":"Seth Johnson-Marshall","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Seth Johnson-Marshall","Est. reading time":"11 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#article","isPartOf":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/"},"author":{"name":"Seth Johnson-Marshall","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/#\/schema\/person\/4014068ab3f19d974bca1f2bd567d2bc"},"headline":"Gorlifoedd Storm Cyfun (CSOs)","datePublished":"2022-01-12T10:36:17+00:00","dateModified":"2026-10-17T21:43:57+00:00","mainEntityOfPage":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/"},"wordCount":2200,"image":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#primaryimage"},"thumbnailUrl":"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg","articleSection":["Datganiadau Sefyllfa"],"inLanguage":"cy-GB"},{"@type":"WebPage","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/","url":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/","name":"Gorlifoedd Storm Cyfun (CSOs) - Afonydd Cymru","isPartOf":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/#website"},"primaryImageOfPage":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#primaryimage"},"image":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#primaryimage"},"thumbnailUrl":"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg","datePublished":"2022-01-12T10:36:17+00:00","dateModified":"2026-10-17T21:43:57+00:00","author":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/#\/schema\/person\/4014068ab3f19d974bca1f2bd567d2bc"},"breadcrumb":{"@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#breadcrumb"},"inLanguage":"cy-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/"]}]},{"@type":"ImageObject","inLanguage":"cy-GB","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#primaryimage","url":"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg","contentUrl":"https:\/\/afonyddcymru.cambrianweb.dev\/wp-content\/uploads\/2022\/01\/20210505_182814-copy-ed.jpg","width":1602,"height":1198},{"@type":"BreadcrumbList","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/combined-storm-overflows-csos\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/afonyddcymru.cambrianweb.dev\/"},{"@type":"ListItem","position":2,"name":"Gorlifoedd Storm Cyfun (CSOs)"}]},{"@type":"WebSite","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/#website","url":"https:\/\/afonyddcymru.cambrianweb.dev\/","name":"Afonydd Cymru","description":"Caring for Welsh Rivers","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/afonyddcymru.cambrianweb.dev\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"cy-GB"},{"@type":"Person","@id":"https:\/\/afonyddcymru.cambrianweb.dev\/#\/schema\/person\/4014068ab3f19d974bca1f2bd567d2bc","name":"Seth Johnson-Marshall","image":{"@type":"ImageObject","inLanguage":"cy-GB","@id":"https:\/\/secure.gravatar.com\/avatar\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ab96db04fe886625b70397fbc1562d1c1aca5b0d177b9870a3d972568e35cb8b?s=96&d=mm&r=g","caption":"Seth Johnson-Marshall"},"url":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/author\/seth-johnson-marshall\/"}]}},"_links":{"self":[{"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/posts\/8889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/comments?post=8889"}],"version-history":[{"count":5,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/posts\/8889\/revisions"}],"predecessor-version":[{"id":12147,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/posts\/8889\/revisions\/12147"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/media\/10737"}],"wp:attachment":[{"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/media?parent=8889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/categories?post=8889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afonyddcymru.cambrianweb.dev\/cy\/wp-json\/wp\/v2\/tags?post=8889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}