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Project 3f: Develop Guidance for Implementation of Post-Construction Requirements to Improve Watershed Health

Priority:
High
Assessment:
Critically important, achievable with moderate barriers

Prerequisite:

None

Project Objective:

Develop technical guidance and permitting tools to promote statewide implementation of post-construction requirements based on watershed processes.

Scope:

Develop a methodology to identify watershed-specific processes that are critical to watershed health, to be applied to all watersheds at the statewide scale. Conduct analysis to identify dominant watershed processes and sensitivity of receiving water bodies to degradation of those processes, for each watershed throughout the state. Determine post-construction management strategies necessary to protect watershed health for each dominant watershed process/receiving water type combination, and whether those strategies are best applied at the regional or site scale. Develop tools, guidance, permitting approaches, permit language, and/or policies to implement the post-construction management strategies. Identify and prioritize options such as the development of technical resource centers, dedicated web site, or workshops for promoting the implementation of post construction requirements.


Background:

Many regions are expected to experience significant growth over the next two decades. Much of this growth is planned for the existing urban margins or undeveloped foothills where the potential for hydromodification could severely harm already stressed riparian habitats and natural hydrogeology. Anticipating potential impacts, the Central Coast Regional Board developed several post-construction requirements tailored to protecting watershed processes that are critical to watershed health. Post-construction requirements vary between watersheds, ensuring that sensitive watersheds receive adequate protection, while also allowing development projects to avoid implementing unnecessary storm water management strategies.

Prerequisites:

None.

Products and Timelines:

1 Year: Produce a staff report outlining a methodology for conducting the watershed analysis at the statewide level (Region 3’s efforts could serve as a foundation), results of the analysis using available data, validation using ground truthing, and recommendations for post-construction management strategies. The report will also identify options for promoting implementation of the post-construction requirements.

3 Years: Using a stakeholder process, develop tools, guidance, permitting approaches, permit language, and/or policies to implement recommended post-construction management strategies at the appropriate regional or local scale. Develop Item for State Water Board consideration of adoption.

Phase II

Objective 3

Establish Permit Pathways to Assess Storm Water Programs and Meet Water Quality Requirements

Goal 2

Manage Storm Water to Preserve Watershed Processes and Achieve Desired Water Quality Outcomes

Project Information

Name Develop Guidance for Implementation of Post-Construction Requirements to Improve Watershed Health
Start 2019
Completion 2023
Progress  
Executive
Sponsors
 
Lead Staff  
Support
Staff
 
Contract Information  
Performance Metrics  

NPDES Storm Water Facilities annual Performance Report





 
 

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