Flow Ecology Special Study

OC Public Works, on behalf of the municipalities of South Orange County Watershed Management Area (South OC WMA), is initiating the Flow Ecology Special Study as identified in the Water Quality Improvement Plan (WQIP).

The South OC WMA committed to implementing a comprehensive WQIP in association with the regional stormwater discharge permit, which identifies goals, strategies, and schedules to address altered flow patterns as a key concern for water quality and stream health in south Orange County creeks and rivers. The identification and elimination of nuisance dry weather flows and restoration of 23,000 linear feet of degraded stream habitat are key implementation strategies to achieve the goals of the WQIP.

Determining environmental flow needs will shed light on how to manage water to promote streamflow enhancement and environmental restoration while balancing the needs of the communities of South Orange County. The primary goal of the Flow Ecology Study is to develop ecologically-based environmental flow recommendations for waterbodies across the South OC WMA.

Project Leads:

More information about the development and implementation of the Flow Ecology Special Study can be found below:

How to participate/contribute

 
Request more information on the Flow Ecology Special Study. See below for Stakeholder Advisory Group meeting information, documents, and action items.
 

June 3, 2020: Technical Advisory Group Webinar 

A webinar for the Technical Advisory Group (TAG) will be held on Wednesday, June 3, 2020. The meeting agenda will focus on the recently developed hydrologic model, its calibration, and its output.
When: June 3, 2020, from 9:00 - 10:30 am
Where: Online
In preparation for this meeting, the draft PowerPoint slide set will be distributed to the TAG for review, in accordance with the tentative schedule below.
  • Friday, May 1, 2020 - TAG will receive the draft slide set via email
  • Thursday, May 14, 2020 - TAG will submit questions/comments on the draft slide set
  • Wednesday, June 3, 2020 - TAG webinar

January 8, 2020: In Person Workshop

 
An in-person workshop was held on January 8, 2020. It was a joint meeting of the Stakeholder Advisory Group (SAG) and the TAG to help increase efficiency of the communication process and reduce the total number of meetings some individuals would have to attend. This workshop provided the SAG and TAG with an update on the study progress and addressed action items identified in previous meetings.
 
When: January 8, 2020 from 1:00 pm - 3:30 pm
Where: Southern California Coastal Water Research Project (SCCWRP), 3535 Harbor Blvd # 110 Costa Mesa, CA 92626
 
Meeting Documents (accessible through the South OC WQIP Regional Clearinghouse)
  • Agenda
  • Presentation
  • Sign in Sheet
  • Meeting Notes
  • Articles including additional information about CSCI and ASCI
 
Action Items
  • Upload more information regarding CSCI and ASCI (see link above)
  • Schedule meetings and detailed technical webinars regarding hydrology and biology, as needed
  • Use the "Request more information" button above to contact the study technical team as needed
  

October 22, 2019: Technical Advisory Group Workshop

 
An in-person meeting was held on October 22, 2019 to discuss technical processes within the study and opportunities for TAG input. See below for details, meeting documents, and action items
 
When: October 22, 2019 from 9:30 am - 2:30 pm
Where: Southern California Coastal Water Research Project (SCCWRP), 3535 Harbor Blvd # 110 Costa Mesa, CA 92626
 
 Meeting Documents (accessible through the South OC WQIP Regional Clearinghouse)
  • Agenda
  • Presentation
  • Meeting Notes
  • Biological and Habitat Data Sources
  • TAG Participant List
 
Action Items
  • Upload biological and habitat data sources (see link above)
  • Use the "Request more information" button above to contact the study technical team as needed
 

August 5, 2019: Stakeholder Advisory Group Workshop

 
An in-person meeting was held on August 5, 2019 to further discuss the study and opportunities for stakeholder input. See below for details, meeting documents, and action items.
 
When: August 5, 2019 from 1:30 - 3:30 pm
Where: OC Sailing and Events Center: Dana Cove Room, 34451 Ensenada Place, Dana Point, California 92629
 
Meeting Documents (accessible through the South OC WQIP Regional Clearinghouse)
  • Agenda
  • Presentation
  • Meeting handout
  • Sign in sheet
  • KMZ files of
    • modeled subbasins
    • modeled reaches and 
    • in-stream low flow diversions, not including coastal diversions or diversions within storm drains
 
Action Items
Use the "Request more information" button above to notify us of:
  • Key hydrologic and ecological data
  • Potential additional TAG participants
  • Additional questions or concerns
 

July 17, 2019: Stakeholder Advisory Group Webinar

 
An online webinar was held on July 17, 2019 to introduce the Flow Ecology Special Study. See below for details and for meeting documents, including a link to the recorded webinar.
 
When: July 17, 2019 from 1:30 - 3:30 pm
Where: Online
 
Meeting Documents (accessible through the South OC WQIP Regional Clearinghouse)
  • Presentation slides
  • Webinar recording (password: FlowEcologyJuly2019)
 
Action Items
Use the "Request more information" button above to notify us of questions or concerns and join us at the in person workshop on August 5, 2019.