It is supposed to be, but my childhood impression is that there are more spring and summer, and less summer and autumn.
I remember when I was in the fourth grade of primary school, the teacher asked us when there was the most water there, and a girl said it was summer. The result was scolded by the teacher: the river is dusty in summer, and it overflows both banks in winter (referring to Heihe River, which is called the second largest inland river in China, and it is called weak water near my home to the satellite launch site). The reason for this is that, first, the agricultural water consumption in summer is large, which is almost used up by the upstream; Second, because of the large evaporation, the weather in my place is very refreshing most of the year, and the hot sun hangs high in summer (alas, otherwise the launch site would not be chosen)
For example, in winter, the water level of the earthen toilets in rural areas is very high (this is not too much urine).
What is it? You'd better find an expert.