​The Poso Creek Regional Water Management Group (RWMG) comprises six agricultural districts and one resource conservation district listed below.  

• Semitropic Water Storage District – Lead Agency
• Cawelo Water District  
• Delano-Earlimart Irrigation District
• Kern-Tulare Water District 
• North Kern Water Storage District 
• Shafter-Wasco Irrigation District
• North West Kern Resource Conservation District 

The RWMG adopted the Poso Creek Integrated Regional Water Management Plan (Poso Creek IRWMP) in July 2007.