Code of Colorado Regulations
Official Publication of the State Administrative Rules (24-4-103(11) C.R.S.)

5 CCR 1002-31 REGULATION NO. 31 - THE BASIC STANDARDS AND METHODOLOGIES FOR SURFACE WATER

Current version

5 CCR 1002-31 effective 06/14/2023 (PDF)

All versions

Rule version by effective date (PDF)	Filing Type	Adopted date	Colorado Register publication date	Rulemaking details (eDocket tracking #)
06/14/2023	Permanent Rule	04/12/2023	05/25/2023	2022-00593
12/31/2021	Permanent Rule	08/09/2021	09/10/2021	2021-00091
06/30/2020	Permanent Rule	01/13/2020	02/10/2020	2019-00393 2019-00736
01/31/2018	Permanent Rule	12/11/2017	01/10/2018	2017-00347
12/30/2017	Permanent Rule	11/13/2017	12/10/2017	2017-00234
03/02/2017	Permanent Rule	01/09/2017	02/10/2017	2016-00466
12/31/2016	Permanent Rule	08/08/2016	09/10/2016	2016-00109
06/30/2016	Permanent Rule	05/09/2016	06/10/2016	2015-00837
01/31/2013	Permanent Rule	09/11/2012	n/a	2012-00386
09/30/2012	Permanent Rule	06/11/2012	n/a	2011-00832
09/30/2012	Admin Change by SOS	09/17/2012	n/a	2012-00842
01/01/2012	Permanent Rule	06/13/2011	n/a	2011-00111
06/13/2011	Admin Change by SOS	06/13/2011	n/a	2011-00352
01/01/2011	Permanent Rule	08/09/2010	n/a	2010-00072
11/30/2009	Permanent Rule	10/13/2009	n/a	2009-00625
05/31/2008	Permanent Rule	01/14/2008	n/a	2007-00944
07/01/2007	Permanent Rule	02/12/2007	n/a	2006-00857
10/16/2006	Admin Change by SOS	10/16/2006	n/a	2006-01067
10/16/2006	Admin Change by SOS	10/16/2006	n/a	2006-01068
Imported	Permanent Rule	n/a	n/a