Central Valley TMDL Projects
Cache Creek, Bear Creek, Sulphur Creek,
and Harley Gulch TMDL
Project Information
- The Cache Creek Watershed Mercury Program required an assessment of mercury-contaminated sediments in the upper Cache Creek watershed. Water Board staff has completed the survey and links to the reports are provided below:
- Mercury Inventory in the Cache Creek Canyon (February 2008)
This report evaluates the distribution of mercury in sediment in Cache Creek and identifies tributary sources of mercury to the creek, from North Fork Cache Creek to Bear Creek. - Bear Creek Mercury Inventory (June 2009)
This report evaluates the spacial distribution of mercury in sediment and identifies tributary sources of mercury to Bear Creek, from upper Bear Creek to Cache Creek. - Mercury Inventory in the Cache Creek Canyon, Bear Creek Confluence to Rumsey (March 2011)
This report evaluates the distribution of mercury in sediment in Cache Creek and identifies tributary sources of mercury to the creek, from the confluence of Bear Creek to Rumsey.
- Mercury Inventory in the Cache Creek Canyon (February 2008)
- The Central Valley Water Board has adopted a TMDL and Basin Plan amendment for mercury in Cache Creek, Bear Creek, and Harley Gulch.
The effective Date of TMDL and Basin Plan Amendment is the date of USEPA approval, 6 February 2007.
- USEPA Approval of Site-Specific Water Quality Objectives and COMM Beneficial Use
- USEPA Approval of TMDL
- Final staff report for Basin Plan Amendments for Control of Mercury in the Cache Creek Watershed (October 2005)
Final staff report adopted by the Central Valley Water Board at a public hearing on 21 October 2005. - Cache Creek 10-year Floodplain Definition Report
- Staff Report - Cache Creek, Bear Creek, and Harley Gulch Mercury TMDL (November 2004)
This is the technical TMDL report for mercury in the Cache Creek watershed, including Cache Creek, Bear Creek, and Harley Gulch. The TMDL report contains: a mercury source analysis, numeric targets to protect beneficial uses, a linkage between aqueous and biotic methylmercury concentrations; load allocations, and options for an implementation plan. The Basin Plan amendment adopted by the Central Valley Water Board in October 2005 implements this TMDL.
- Sulphur Creek TMDL and Basin Plan Amendment
Subscribe to our Cache Creek Watershed Mercury TMDL email list to receive notifications and the latest updates. After subscribing, you will need to check your email host for a confirmation email to complete the subscription.
Subscribe to our other email lists.
Contact Us
- Program Contact
Patrick Morris
(916) 464-4621
Patrick.Morris@waterboards.ca.gov - Web page problems: Webmaster5@waterboards.ca.gov
- Report an Environmental Concern
