West Wimmera Shire Council has towns that are subject to stormwater and riverine flooding. Towns that are prone to stormwater flooding include Apsley and Edenhope. 

Flood events within West Wimmera have been infrequent over the last decade. The most recent flood event was recorded in 2016.

The Shire has three major waterways that impact various townships, localities and the rural areas.  They are the Glenelg River (including Salt Creek), The Chetwynd River and the Koijak Creek.

These systems flow in or near to towns within the Municipality.  Lake Wallace at Edenhope is the largest body of water in the Shire.

Predominantly two townships are impacted within the Shire from flooding events - Apsley and Harrow.  The township of Harrow has experienced two large flood events within the last 10 years, with the flood in 2010 being the largest recently recorded event.

Apsley has had numerous smaller events, predominately due to rainfall and water not draining away as quick as other areas. Within the West Wimmera Shire rural flooding can be significant, other townships do experience some flooding during large flood events within the region.