Groundwater Monitoring (CASGEM)

CASGEMSince 2009, the California Statewide Groundwater Elevation Monitoring (CASGEM) Program has tracked seasonal and long-term groundwater elevation trends in groundwater basins statewide. 

The program’s mission is to establish a permanent, locally-managed program of regular and systematic monitoring in all of California's alluvial groundwater basins. This early attempt to monitor groundwater continues to exist as a tool to help achieve the goals set out under the Sustainable Groundwater Management Act (SGMA). 

Senate Bill x7-6, passed by the legislature in 2009, established collaboration between local monitoring parties and DWR to collect statewide groundwater elevations, to be made available to the public. In response to the law, we developed the CASGEM program. 

Collecting and evaluating these groundwater data on a statewide scale is a fundamental step toward improving management of California's groundwater resources. The CASGEM program relies and builds upon the many previously established local long-term groundwater monitoring and management programs. Our role is to coordinate the CASGEM program, to work cooperatively with local entities, and to maintain the collected elevation data in a readily and widely available public database.

The CASGEM Online System allows you to:

 

  • View lists of local agencies, counties and associations who have volunteered to serve as CASGEM Monitoring Entities providing groundwater data statewide
  • View CASGEM Monitoring Plans and Groundwater Management Plans
  • Search and view groundwater elevation data in tabular format
  • View hydrographs that show groundwater elevations for wells
  • Search and view groundwater monitoring well information
  • View mapped locations of CASGEM wells, monitoring area boundaries, and other geographic information
  • Measure distances between wells and size of monitoring areas and basins
  • Download well information, groundwater data, hydrographs and maps
  • Download summary reports on wells, groundwater elevations, Monitoring Entities and basin information

The CASGEM application will undergo maintenance Wednesday, June 27, 2018, from 6:00 pm to 8:00 pm. There will be an interruption in website access during this time.

If you have any questions regarding this outage, please contact Tom Lutterman at thomas.lutterman@water.ca.gov.

CASGEM Public Portal Sign-in

The CASGEM system provides Monitoring Entities the following notification and data submittal:

  • Create, edit, and submit notifications to become a Monitoring Entity
  • Create and manage user accounts
  • Create and manage agency information
  • Submit CASGEM monitoring plans and groundwater management plans
  • Submit construction and location information associated with CASGEM wells
  • Submit groundwater elevation data (including batch uploads)

The CASGEM system also provides the following access to Monitoring Entities:

  • View lists of local agencies, counties and associations who have volunteered to serve as CASGEM Monitoring Entities providing groundwater data statewide 
  • View CASGEM Monitoring Plans and Groundwater Management Plans (via hyperlink)
  • Search and view groundwater elevation data in tabular format
  • View hydrographs for single wells and compare hydrographs for multiple wells
  • Search and view groundwater monitoring well information
  • View mapped locations of CASGEM wells, monitoring area boundaries, and other geographic information
  • Measure distances between wells and size of monitoring areas and basins
  • Download well information, groundwater data, hydrographs and maps
  • Download summary reports on wells, groundwater elevations, Monitoring Entities and basin information

The CASGEM application will undergo maintenance Wednesday, June 27, 2018, from 6:00 pm to 8:00 pm. There will be an interruption in website access during this time.

If you have any questions regarding this outage, please contact Tom Lutterman at thomas.lutterman@water.ca.gov.

CASGEM Monitoring Entity Sign-in

  • Why Is CASGEM Important?

    This brochure provides information about why is CASGEM important for management of California's groundwater.

  • What Is My Role as a Well Owner?

    This brochure describes a role of a land owner related to the CASGEM program.

  • What Is CASGEM?

    This brochure provides information about the CASGEM and describes how the CASGEM works. The contact infor-mation and the timeline for the program are included in the brochure.

  • What Is a Monitoring Entity?

    This brochure answers questions related to CASGEM Monitoring Entities.

  • California Groundwater Elevation Monitoring SBX7 6 Flier

    The SBX7 6 flier provides the background for California Groundwater Elevation Monitoring, gives an overview of SBX7 6, states two major deadlines for the program, and lists frequently asked questions.

CASGEM 2015 Status Report
2015 Status Report to the Legislature and the Governor ( PDF) | (Publish Date:
This report describes the significant number of CASGEM Program accomplishments achieved during calendar years 2012 through 2015. This report is the second in a series of CASGEM Program status reports that DWR will provide to the Governor and the Legislature.
CASGEM 2012 Report
2012 Status Report to the Legislature and the Governor ( PDF) | (Publish Date:
The report outlines the background of the CASGEM Program and describes the first two years of implementation (2010 and 2011). This report is the first in a series of periodic reports on the CASGEM Program that DWR will provide to the Governor and the Legislature.
CASGEM ME Reporting Procedures
Procedures for Monitoring Entity Reporting ( PDF) | (Publish Date:
This document summarizes the requirements of the law, explains how monitoring entities are established, and describes how data will be submitted on-line to DWR.
CASGEM ME Guidelines
Groundwater Elevation Monitoring Guidelines ( PDF) | (Publish Date:
This document describes the groundwater monitoring procedures that DWR will use if no local entity volunteers to perform CASGEM monitoring and DWR is required to conduct monitoring. These Guidelines are not binding on local entities monitoring a basin, but can provide guidance to local entities considering whether they wish to assume groundwater monitoring functions and may be helpful to determine what to include in the monitoring plans required by the law. Each basin is unique, and DWR will work with the designated Monitoring Entities to determine the appropriate plan for each basin.
CASGEM Monitoring Plan Summary
Monitoring Plan Summary ( PDF) | (Publish Date:
This document summarizes the basic components of a CASGEM monitoring plan.
CASGEM Public Supply Well Addendum
Use of Public Supply Wells for CASGEM Monitoring Addendum ( PDF) | (Publish Date:

 

 

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Contacts

Northern Region
Pat Vellines
Senior Engr. Geologist
2440 Main Street
Red Bluff, CA 96080
530-529-7344
Patricia.Vellines@water.ca.gov

North Central Region
Bill Brewster
Senior Engr. Geologist
3500 Industrial Blvd 
W. Sacramento, CA 95691
916-376-9657
Bill.Brewster@water.ca.gov

South Central Region
Mike McKenzie
Senior Engr. Geologist
3374 East Shields Avenue
Fresno, CA 93726
559-230-3308
Charles.McKenzie@water.ca.gov

Southern Region
Abiodun Aderonmu
Senior Engineer 
770 Fairmont Avenue, Suite 102
Glendale, CA 91203
(818)-549-2327
Abiodun.Aderonmu@water.ca.gov

DWR Headquarters
Tom Lutterman
Senior Engr. Geologist
Sustainable Groundwater Management Branch
901 P Street, Room 213
P.O. Box 942836
Sacramento, CA 94236
916-651-9263
Thomas.Lutterman@water.ca.gov