Instream Flow Rule 6k Revisions to Implement Section 2 of Senate Bill 24-197
Colorado Water Conservation Board (CWCB) will hold Stakeholder meetings in December 2024 and January 2025, and a rulemaking hearing in 2025 to adopt amendments to the Rules Concerning Colorado's Instream Flow and Natural Lake Level Program. The amendments to the ISF Rules address the rulemaking requirements of SB24-197 as codified at 37-83-105 C.R.S., by updating ISF Rule 6k.
The final adopted ISF Rules will be published in the Colorado Register and will become effective thereafter, along with the updated Statement of Basis and Purpose.
Documents related to this rulemaking process can be found at the links below. For more information, contact Kaylea White.
Documents Grouped by Category
Requests for Party Status
Hearing Officer ORDERS
Prehearing Statements
Rebuttal & Supplements Statements
Pre-filed Written Testimony
CWCB Adoption ORDER
- ISF Rules Revisions (Draft 5) - June 24, 2025 - This draft shows redlines to the existing rules and will be presented to the Board at the Hearing in July 2025.
- ISF Rules Revisions (Draft 4) - March 20, 2025 - This draft is published in the Colorado Register
- ISF Rules Revisions (Draft 3) - January 24, 2025- This draft shows redlines to the existing rules.
- ISF Rules Revisions (Draft 2) - December 23, 2024 - The updated revisions are indicated with yellow highlighted text.
- ISF Rules Revisions (Draft 1) - December 5, 2025
- Proposed Statement of Basis and Purpose, and Specific Statutory Authority - June 24, 2025
- Proposed Statement of Basis and Purpose, and Specific Statutory Authority - March 6, 2025
- January 29, 2025 Stakeholder Meeting Notice
- January 29, 2025 Stakeholder Meeting Presentation
- January 29, 2025 Stakeholder Meeting Attendance
- Public Comments - January 3, 2025
- December 17, 2024 and Stakeholder Meetings Notice
- December 17, 2024 Stakeholder Meeting Recorded Video
- December 17, 2024 Stakeholder Meeting Attendance and Chat Log