The Sacramento Stormwater Quality Partnership's New Development program addresses post-construction stormwater quantity and quality from new development and re-development projects. The goal is to protect local creeks and rivers by reducing the discharge of pollutants found in stormwater resulting from new developments to the Maximum Extent Practicable (MEP) and by mitigating increased flows that can cause erosion and degrade habitat.
BMP Sizing Calculator
The Sacramento BMP Sizing Calculator was developed by the Sacramento Stormwater Quality Partnership (Partnership) as part of our Hydromodification Management Plan (HMP) project. This tool is intended to assist Engineers in designing BMPs that meet upcoming hydromodification management requirements. The Partnership’s proposed hydromodification management requirements are presented in the revised HMP that was submitted to Central Valley Regional Board for approval in July 2011. It is unknown when the HMP will be approved.
This BMP Sizing Calculator is now available for public testing and comment. The Calculator may be used to size select hydromodification management BMPs for development projects no greater than 100 acres in size. It is an easy-to-use, desktop-based software application. It incorporates sizing factor tables developed using continuous simulation hydrologic modeling that integrated local data such as long term precipitation, soil characteristics, vegetative cover, and topography (refer HMP Chapter 6 for additional details).
Project applicants may use this tool for site planning and evaluation purposes. However, the calculator may not be used for project approval purposes at this time.
You may contact Hong Lin, City of Sacramento or Dan Gwaltney, County of Sacramento if you have questions regarding this tool.
Design Manual
Sacramento Stormwater Quality Design Manual – Current technical guidance manual to meet stormwater management requirements in the NPDES permit for new development and re-development priority project
- Priority Project and Stormwater Quality Control Measure Selection Matrix
- Proprietary Stormwater Quality Treatment Devices
Hydromodification Management Plan (HMP)
• Pilot Project for Hydromodification Management
• Sacramento Stormwater Quality Partnership Hydromodification Management Plan (revised July 29, 2011)
- Transmittal letter 8/5/2011
- Executive summary
- HMP Report Part 1
- HMP Report Part 2
- HMP Report Part 3
- HMP Report Part 4
- Appendices A-C
- Appendix D
- Appendices E-F
- Appendix G (Part 1)
- Appendix G (Part 2)
- Appendix G (Part 3)
- Appendix G (Part 4)
- Appendices H-J
- HMP Applicability Map
Low Impact Development (LID) Standards (coming soon) – join the stakeholder list, please email hlin@cityofsacramento.org
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