noun
quantity of hot spring water
Used when discussing the amount or volume of water in a hot spring, often in contexts like onsen quality or supply.
この温泉は湯量が豊富です。
This hot spring has an abundant quantity of water.
湯量が少ないと、温泉の温度が下がりやすい。
When the quantity of hot spring water is low, the temperature tends to drop easily.