Ponds were usually fed by a stream from the northeast of the compound following the geological shape of Kyoto, and the stream ran between the shinden and the east tsuinoya, south toward the pond.
池への給水は京都の地形から敷地の北東部からの流れが導かれることが多く、水路は寝殿と東対屋の間をとおし南に流れて池に注ぐ。