You are expected to understand the vulnerability of your supply system to drought risk and align with the assumptions set out in your WRMP and to more challenging but plausible drought scenarios.
Disgwylir i chi ddeall pa mor agored i niwed yw eich system gyflenwi i risg sychder ac alinio â'r rhagdybiaethau a nodir yn eich Cynllun Rheoli Adnoddau Dŵr a senarios sychder mwy heriol ond credadwy.