The Palouse Basin Aquifer Committee works to ensure a long-term, quality water supply for the Palouse Basin region.

We Are Committed To Working Together


The primary role of PBAC is to encourage member entities to implement the Palouse Basin Groundwater Management Plan, enacted in 1992. Additional roles involve monitoring of pumping and groundwater levels, provide an education and information exchange, support groundwater system research, and explore supplemental water sources.

Upcoming Events

Next PBAC Meeting: Thursday, March 23 at 2:00PM

In Person Attendance: UI Facilities Building, Jack's Creek Room 151
Virtual Attendance: Zoom (Passcode: PBAC)
Meeting Information: Agenda found on Committee Page the Tuesday prior to the meeting


Upcoming PBAC Meeting: Thursday, April 20 at 2:00PM


Upcoming PBAC Meeting: Thursday, May 18 at 2:00PM


Upcoming PBAC Meeting: Thursday, June 15 at 2:00PM

Water Supply Alternatives Report

PBAC commissioned Alta Science & Engineering, Inc. in 2020 to refine five water supply project alternatives and generate recommendations for the best way to move towards project implementation. PBAC adopted Alta's findings at their August 18, 2022, meeting.


|| Read the Summary Report   || Read the Full Report

General Information

2015 Informational Update to the 1992 Groundwater Management Plan ||  Download

Original 1992 Groundwater Management Plan ||  Download

Boundary Map of the Palouse Basin Aquifer System || Download

Entity Action Plans ||  Download

PBAC Fact Sheet || Download

PBAC Mission and Goals ||  Download

PBAC Interagency Agreement ||  Download

History of Groundwater Management on the Palouse ||  Download

PBAC Bylaws ||  Download