Stormwater quality management involves a large and diverse range of issues and information. This section provides ready access to the most pertinent and up-to-date resources for the stormwater quality practitioner.

BMP Handbooks

The California Stormwater Best Management Practices (BMP) Handbooks have provided excellent guidance to the stormwater community since their first publication by the Stormwater Quality Task Force (SWQTF) in 1993. Refined and updated since, the handbooks are the standard reference for stormwater quality management in California.

California LID Portal

Welcome to the California Low Impact Development Web Portal or CA LID Portal. LID has become such a popular best management practices strategy for managing stormwater quality that CASQA and its partners decided to create a dedicated web portal for LID.

Effectiveness Assessment

With the help of a Proposition 84 stormwater grant CASQA is developing this web portal to assist the stormwater community conduct assessments of stormwater program effectiveness. This portal will provide a central repository for obtaining guidance, sharing data and information, and obtaining planning and assessment support.

Position Papers

Periodically, CASQA develops position papers on significant stormwater topics. These position papers support the implementation of CASQA’s Vision, as well as other goals.


Links to information about the training and qualification of Qualified Industrial Storm Water Practitioners (QISPs).

QSP / QSD Qualification

Through an agreement with the State Water Board, CASQA is charged with administering the Construction General Permit Training Program, which includes overseeing the training and qualification of Qualified SWPPP Practitioners (QSPs) and Qualified SWPPP Developers (QSDs).

Stormwater Funding Resource Portal