Well Completion Reports

Submit a Well Completion Report

California Water Code Section 13751 requires that anyone who constructs, alters, or destroys a water well, cathodic protection well, groundwater monitoring well, or geothermal heat exchange well must file with the Department of Water Resources a report of completion within 60 days of the completion of the work. Drillers submit their well completion reports with the Online System of Well Completion Reports (OSWCR, say "Oscar"). OSWCR users create an account based on their C-57 license that DWR will validate. Upon approval users will be able to submit Well Completion Reports.

Click here to submit a Well Completion Report

Public Access to Well Completion Reports

California Water Code Section 13752 allows for the release of copies of well completion reports to governmental agencies and to the public. DWR has redacted the personal information from the approximately 800,000 reports on file. They are available online at no charge via a web mapping application here:

Well Completion Report Map Application

If you are unable to find reports of interest using this application, Department staff can process your request, but a fee may be charged as provided by the law. If you are interested in requesting well completion reports instead of using the free online access, please fill out and submit a Well Completion Report Request Form.


For maps of regions and a list of counties that each office supports, see the Integrated Regional Water Management Technical Assistance page.

    Northern Region

    April Scholzen

    Water Resources Tech. II

    2440 Main Street

    Red Bluff, CA 96080

    530-529-7368 (office)

    530-529-7322 (fax)



    North Central Region

    Madeleine Blanc

    Water Resources Engineer

    Groundwater Supply & Special Studies Section

    3500 Industrial Blvd

    West Sacramento, CA 95691


    916-376-9676 (fax)



    South Central Region

    Chris Guevara

    Water Resources Tech. II

    691 N. Laverne Ave Suite 104

    Fresno, CA 93727-6820

    559-552-4450 (office)
    916-744-5009  (fax)



    Southern Region

    Blanca Zendejas 

    Junior Engineering Technician 

    770 Fairmont Avenue, Suite 200

    Glendale, CA 91203-1035

    818-549-2336 (office)


DWR Headquarters

Well Completion Reports/OSWCR