Integrated Regional Groundwater Management Plan for the Modesto Subbasin

Contact Information

Irrigation Operations
Mon. - Fri. 7am to 4pm
(209) 526-7639

Customer Service
Mon. - Fri. 8am to 5pm
(209) 526-7337 or
(888) 335-1643 toll-free

In April 1994, six agencies covering the Modesto Groundwater Subbasin formed the Stanislaus and Tuolumne Rivers Groundwater Basin Association (Association) to provide a forum for coordinated planning and management of the subbasin. These six agencies are:

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