水 位(すいい)

すいい

noun

water level

1. water level; water height

The height of the surface of water in a river, lake, reservoir, or other body of water. A key measurement in flood management and weather reporting.

川(かわ)の水位(すいい)が上(あ)がっている。

The water level of the river is rising.

大雨(おおあめ)で水位(すいい)が危険(きけん)な水準(すいじゅん)に達(たっ)した。

The water level reached a dangerous level due to heavy rain.

ダムの水位(すいい)が低下(ていか)しているため、取水(しゅすい)制限(せいげん)が出(で)された。

Water intake restrictions were issued because the dam's water level is declining.

Composed of 水(すい) (water) and 位(い) (level, rank). A fundamental term in weather reports and disaster preparedness.

Common collocations

水位(すいい)が上(あ)がる/下(さ)がる: the water level rises/falls
水位(すいい)が上昇(じょうしょう)する: the water level increases (formal)
危険(きけん)水位(すいい): dangerous water level
水位(すいい)計(けい): water level gauge
水位(すいい)を監視(かんし)する: to monitor the water level

Usage

Frequently heard in weather reports and disaster alerts, especially during the rainy season (梅雨(つゆ)) and typhoon season. The phrase 危険(きけん)水位(すいい) (dangerous water level) triggers evacuation warnings.

Similar words

水位(すいい): water level — the actual height of water
推移(すいい): transition, changes over time — a homophone with completely different meaning
水量(すいりょう): water volume — the amount of water, not just its height
潮位(ちょうい): tide level — specifically for ocean tides

Related Words

Homophone: 推移(すいい) (transition, changes over time)

Related: 水深(すいしん) (water depth)

general

Added 2026.4.3 1:20 · Revised 2026.9.2 13:02

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