CASGEM Monitoring Entities

Groundwater Pump

What Is a Monitoring Entity?

A Monitoring Entity is a local agency or group that voluntarily takes responsibility for coordinating groundwater level monitoring and data reporting for all or part of a groundwater basin. A Monitoring Entity may measure groundwater levels itself or compile data for other agencies. A Monitoring Entity is also responsible for submitting the data to the Department of Water Resources so that it can be made available to the public.

Who Is Authorized To Be a Monitoring Entity?

  • Watermasters or court appointed water management engineers
  • Groundwater management agencies with statutory authority who are monitoring groundwater elevations prior to January 1, 2010
  • Water replenishment districts
  • Local agencies that manage all or part of the groundwater basin who were monitoring groundwater elevations prior to January 1, 2010
  • Local agencies implementing an Integrated Regional Water Management Plan
  • Counties
  • Voluntary groundwater associations formed pursuant to Water Code Section 10935

If no monitoring entity comes forward, then DWR will assume monitoring in the basin. Nonparticipating agencies risk losing eligibility for State water grants.

How Does an Agency Become a Monitoring Entity?

DWR has developed the CASGEM Online Submittal System for submitting Monitoring Entity notifications. To be considered for designation as a Monitoring Entity, a local agency must notify DWR prior to January 1, 2011. Notification must include:

  • The prospective Monitoring Entity's identity and contact information
  • The specific authority described in SBx7 6 that qualifies the applicant to become a designated Monitoring Entity
  • A map of the Monitoring Entity's jurisdiction, the groundwater basin, and the proposed monitoring area
  • A statement that the entity will comply with the requirements of CASGEM
  • Additional requirements depending upon the applicant's qualifying authority