project
clean water |
|
|
|
|
|
| |
Standard Urban Stormwater Management Plan (SUSMP) and
Hydromodification Workgroup
- Rain
Gauge and Rainfall Data Selection - technical memo
(April, 2008)
- Rain
Stream Gauge Acquisition Table (Excel)
- Development of Interim Hydrograph Modification Criteria for the San Diego County HMP
presentation on February 21, 2008 RWQCB
- Low Impact Development
to meet stormwater NPDES treatment and hydrograph modification management requirements
presentation February 21, 2008
Click
here
for the Revised Model Standard Urban Storm Water Mitigation Plan
document - No Redline (February 2008).
Click
here
for the Revised Model Standard Urban Storm Water Mitigation Plan
document - Redline (February 2008).
Click
here for the Interim Hydromodification Criteria
document
(November 2007).
A Hydromodification and SUSMP Public Workshop was held
on November 19, 2007.
Presentations from the workshop included:
- Development of Interim Hydrograph Modification Criteria for the San Diego County HMP
- Plans for
Standard Urban Stormwater Management Plan Revisions
- Standard Urban Stormwater Management Plan
and Interim Hydromodification Management Criteria
Regional Water Quality Control Board Order R9-2007-0001
Provision D.1.g (6) (Board Order) requires the County of
San Diego and its NPDES Co-permittees to identify Interim
Hydromodification Criteria (IHC) within 365 days of Order
adoption (i.e., by January 24, 2008). The interim criteria
will apply until the final Hydrograph Modification
Management Plan (HMP) is implemented. The IHC is described
in the order as “an interim range of runoff flow rates
for which Priority Development Project post-project runoff
flow rates and durations shall not exceed pre-project
runoff flow rates and durations.” The purpose of the IHC
is to prevent development-related changes in stormwater
runoff from causing, or further accelerating, stream
channel erosion or other adverse impacts to beneficial
stream uses. This memorandum provides background on
fluvial geomorphology and hydrograph modification
management, describes flow control criteria applied in
other HMPs, and provides a recommendation for developing
the San Diego IHC.
|
|
| |
|
|
Workgroup Chair: Sara
Agahi, County of San Diego
For more information, questions, or comments, please contact Sara
Agahi at 858.694.2665
|
|
|
Meetings are open to all interested parties.
Meeting(s)
T.B.D.
Meeting Summaries
|
|
|
|
|
|
| |
|
|
|
|
|
| |
|
|
|
clean
water through local commitment and action
PCW Webmaster
|
|