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The GIS webpage gives you links to the map viewers that are currently available. We are working to add new ones and improve the existing viewers and will post the new/improved map tools as soon as they are ready. Within each of the viewers are icon-based toolsets, and help in using those is found by clicking the info icon.
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We work with the datasets constantly and strive to make the data as accurate as we can. However, we understand that there are limitations to how the information should be used because of the variable accuracy and completeness of the data, and hope that reading the disclosure information will cause the public user to understand the limitations. Actively checking the results with this Department prior to making a further investment of time or money is strongly recommended.
Like all of the major webpages for Tuolumne County, the GIS page has contact information on the side. Ways of using the contact information to ask a question include a phone number, address, and a link that allows the user to send an email to us. We try to answer any inquiry in a complete and timely fashion.