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North Central Region Office Programs:
California-Nevada and
Watershed Assessment
Land & Water Use
Sacramento-San Joaquin Delta
Surface Water

North Central Region Office
Department of Water Resources

(916) 376-9600

Street Address:

3500 Industrial Blvd.
West Sacramento, CA 95691

Mailing Address:

PO Box 942836
Sacramento, CA 94236

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Well Completion Reports

The Department of Water Resources is responsible for maintaining a file of well completion reports, which must be submitted whenever a driller works on a water well.

About 400,000 well completion reports are on file for Central California, and approximately 500 to 1000 more arrive each month.

This is a valuable resource and service to landowners who want to find out about subsurface geologic conditions on their property or to determine well construction details for their water wells.

The information is also valuable to researchers of public agencies trying to better understand the groundwater basin.

CD staff on Upper Roberts Island

Blank Well Completion Reports (DWR Form 188) are available here in .PDF format or call the North Central Region Office at (916) 376-9612 for information on how to obtain hard copies of this form.

If you would like instructions on properly preparing a well completion report, please refer to How to Fill Out a Well Completion Report; an instruction pamphlet provided in .PDF format by the DWR.

Well Completion Report Request Forms

State law ( Water Code 13752) prohibits distributing well completion reports to anyone but the landowner, his or her designee, or a government agency without the owner's permission.

If you wish to request a copy of a well completion report for a well that you own, you need to complete the Owner Well Completion Report Request (PDF, 17KB) and mail or fax it to the appropriate district office shown on the top of the form.

If you are not the owner of a well, there are two separate forms available: one for governmental agencies and their authorized agents conducting studies, and one for persons conducting conducting environmental cleanup studies. Please click on one of the links below to access the appropriate well completion release form:

  • Governmental Agencies conducting studies
  • Persons conducting environmental cleanup studies.
  • Once completed, mail or fax it to the appropriate district office shown on the top of the form.

    For well inquiries within the North Central Region Office mail or fax the form to:

    Department of Water Resources
    North Central Region Office
    3500 Industrial Blvd,
    West Sacramento, CA 95691
    (916) 376-9676 (fax)

    For additional information regarding well completion reports, please call (916) 376-9612.

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