I'd like to show you a graph of the changes in the Ishite-gawa Dam reservoir water.
http://www.city.matsuyama
It's one of the pages in the municipal official website. It's written in Japanese and I'll try to explain it in English.
The left longitudinal axis shows the rate of reservoir water. The vertical scale of it is written as a %. The right side is the amount of precipitation. The scale is in millimeters. The horizontal axis shows the month in each year.
The blue line is the rate of reservoir water from April 2006 to March 2007. The Japanese fiscal year is from April to March. Anyway, the green line is in 1994, the drought year and the red line is this year. The bar chart of each color shows the precipitation of each month in each year. The stair-like line plot shows the average year.
I think you can understand visually how serious our water supply situation is.
(Vocabulary)
precipitation [C,U](専門) 降水（量）, 降雨［降雪］（量）
line plot 折れ線グラフ
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