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    <dif:Entry_Title>Gollyngiadau a Ganiateir ag Amodau i Ddyfroedd a Reolir</dif:Entry_Title>
    <dif:Data_Set_Citation>
      <dif:Dataset_Creator/>
      <dif:Dataset_Release_Date>2026-03-05</dif:Dataset_Release_Date>
      <dif:Dataset_Publisher>Cyfoeth Naturiol Cymru</dif:Dataset_Publisher>
      <dif:Data_Presentation_Form/>
    </dif:Data_Set_Citation>
    <dif:ISO_Topic_Category>inlandWaters</dif:ISO_Topic_Category>
    <dif:Temporal_Coverage>
      <dif:Start_Date/>
      <dif:End_Date/>
    </dif:Temporal_Coverage>
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      <dif:Northernmost_Latitude>53.44493922831393</dif:Northernmost_Latitude>
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      <dif:Easternmost_Longitude>-2.656542792117022</dif:Easternmost_Longitude>
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    <dif:Summary>Mae'r set ddata hon yn darparu manylion trwyddedu fel sy'n ofynnol gan Reoliadau Trwyddedu Amgylcheddol. Cedwir gwybodaeth am bob deiliaid trwydded ac mae'n cynnwys yr holl sylweddau a reolir. Daw'r data o Gofrestr Gyhoeddus Cyfoeth Naturiol Cymru. Mae'r set ddata'n cynnwys tair haen o wybodaeth: Haen 1 – Safle a chyffredinol Gwybodaeth yn ymwneud â gweithredwr y drwydded, cyfeiriad gollwng a math. Dyddiad cyflwyno, dod i rym a dirymio'r drwydded. Gwybodaeth ynglŷn â lle mae'r elifion yn mynd i'r amgylchedd (fel afon, arfordir, dŵr daear) ar gyfer pob trwydded. Haen 2 – Allfa a gollwng Data ar y math o elifion, e.e. elifiant carthion, gorlif storm, masnach. Caiff lleoliad yr elifiant a'r allfa eu darparu yn fformat Cyfeirnod Grid Cenedlaethol OS. Rhoddir manylion pellach am y math o drwydded a'r math o driniaeth. Haen 3 – Cyfyngiadau manylion gollwng / penderfynyddion Darperir gwybodaeth bellach am faint y gellir ei ollwng ac ym mha gyfnod amser mewn misoedd. Manylion gollwng / penderfynyddion yw'r sylweddau a'r cyfyngiadau rhifyddol sy'n cyfrannu at yr elifion. Gallai hyn gynnwys cyfyngiadau cemegol, biolegol a ffisegol. Cynhwysir y cyfyngiadau trwyddedig ar gyfer pob manylyn penderfynydd / gollyngiad. Darperir data ar gyfer pob elifiant a gall gynnwys un penderfynydd neu fwy gan ddibynnu ar gymhlethdod y gollyngiad. Cydnabyddiaeth Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl.</dif:Summary>
    <dif:DIF_Creation_Date>2026-03-05</dif:DIF_Creation_Date>
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        <dif:Type>WWW:DOWNLOAD-1.0-http--download</dif:Type>
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      <dif:URL>https://datamap.gov.wales/download/3544</dif:URL>
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    <dif:Metadata_Name>CEOS IDN DIF</dif:Metadata_Name>
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