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Rulemaking Designated Basins 
DWR > Ground Water > Designated Basins (CGWC) > CGWC Documents > Rulemaking Designated Basins


Interested Parties and Designated Basin Stakeholders:

The Ground Water Commission (Commission) is in the process to possibly amend its Rules and Regulations for the Management and Control of Designated Ground Water (Designated Basin Rules, or Rules).  The current Designated Basin Rules are available to view and download here. 

In contemplating these changes to the Designated Basin Rules, the Commission invites participants with an interest in the subject of the rulemaking to submit views or otherwise participate informally in conferences on the proposals under consideration.  Interested parties may participate and present their thoughts, ideas, and reasoned opinions on the proposed changes by attending meetings and/or submitting written comments.

Staff of the Commission held public meetings to provide for input to the proposed amendments in November and December of 2017.  Written comments on the proposed amendments previously provided by the public are being made available on the FTP Site here.

After further review, including consideration of the public input already received, Staff of the Commission has revised its proposed amendments to the Rules.  The proposed amendments currently proposed by Staff of the Commission (both redlined to the current rules, and a clean version), as well as a document containing Staff’s reasons for each proposed amendment are being made available on the FTP Site here

Staff of the Commission will hold another public meeting to allow for input on September 26, 2018, from 9:00 am to noon, in Room 814, 1313 Sherman St, Denver, CO, 80203.  Interested parties may participate in person or by phone.  Phone attendance can be accomplished by dialing 303-866-3581 x7622.  Additional public meetings may be scheduled as needed.

Additional written comments should be submitted to Keith Vander Horst, Chief of Water Supply, Basins, by email to, or by US mail to 1313 Sherman St. Room 821, Denver, CO 80203.  Interested parties are encouraged to submit any written comments prior to the public meeting.

This web page will be updated with additional information on the rulemaking process as it becomes available.  We will also be using email to keep in contact with any interested party that wishes to receive notifications and updates on the process.  Anyone may be added to the email notification list by emailing