also: みなも
water's surface
Refers to the surface of a body of water, such as a lake, river, or sea. The reading みなも is a poetic alternative.
月の光が水面に映っている。
The moonlight is reflected on the water's surface.
小石を投げると、水面に波紋が広がった。
When I threw a pebble, ripples spread across the water's surface.
Fallen leaves were quietly floating on the water's surface.
The moonlight was beautifully reflected on the water's surface.
The wind picked up and the water's surface began to ripple.
The motorboat sped forward, cutting across the water's surface.
水面 refers to the surface of the water, while 水中 refers to the space below that surface.
public waters
water table; groundwater level