Impervious Surface Data Collection
 |
||
|
On October 11, 2005, Water Board staff hosted a workshop with interested stakeholders to discuss the impervious surface data tracking and reporting needs and strategy of new and redevelopment projects. Impervious surface has been recognized as a good indicator to track the trend of urbanization and its impacts on streams. About 25 people attended that represent interests of municipalities, consultants, local environmental groups and other agencies. At the conclusion of the workshop, it was agreed that several cities that have been collecting the data will provide all the existing data to Water Board by December 2005 as a pilot project to see it there is any pattern. It was also agreed that impervious surfaces are not all equal; the directly connected impervious surface needs to be better defined. Impervious surface data can serve as an indicator of stream health, an effectiveness measurement of stormwater program effectiveness in pollutant and flow controls, a parameter to prioritize stormwater management activities and stream restoration efforts, etc. Some local entities assess flood control fees based on the amount of impervious surface created or replaced. Such approach creates incentives to reduce the amount of imperviousness. Agenda, notes, handouts and presentations from the workshop are posted here for information. Zone
7 Impervious Surface Calculation Form (pdf)
|
|
|
||