Submittals to the Regional Water Boards

Hydromodification Management (HM) Applicability Map

Important Note: These documents are not effective until the San Francisco Bay Regional Water Quality Control Board (SFBRWQCB) Executive Officer (EO) has formally approved them.  They were submitted to SFBRWQCB as part of 2022-2023 Annual Reporting requirements and have not yet received EO approval. 

Until SFBRWQCB accepts the map and related submittals, Contra Costa Permittees will continue to apply the criteria in CCCWP's 2006 HMP and MRP 1.0.  This page will be updated upon EO approval.  


Hydrograph Modification Management Plan

Note: As of December 2022, CCCWP decided to adopt the Bay Area Hydrology Model (BAHM), and has worked with Clear Creek Solutions to incorporate Contra Costa rainfall data into the model.  Further information and resources will be provided soon.


Archived Hydromodification Management Submittals (2007-2017)

Hydrograph Modification Management Plan Submittals (2004-2005)

Appendix B to Attachment 4: Sample Stream Stability Handbook Sheets

Other Submittals to the Regional Water Quality Control Boards