1. ponding - Noun
2. ponding - Verb
(construction, hydrology) The excessive accumulation of water in low-lying areas, remaining 48 hours after the end of rainfall under conditions ordinarily conducive to drying.
The accumulation of water on a flat roof, potentially leading to leakage.
ponding
present participle of pond
The picture to the right shows one of many ways to achieve this, ponding – submerging setting concrete in water and wrapping in plastic to prevent dehydration. Source: Internet
It experiences frost up to 53 days per year, however this varies greatly with elevation, proximity to high mountains and terrain either draining or ponding cold air drainage. Source: Internet