pluvial
/ˈpluːviəl/Definitions
1. adjective
relating to or caused by rain
“The pluvial landscape was dotted with small streams and waterfalls.”
2. noun
a stream or river that is formed by or carries rainwater
“The pluvial was swollen after the heavy rainstorm.”
3. noun
a period of rain or a rainy season
“The pluvial season was perfect for growing crops.”