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As of January 1, 2023, these details are to be used on all construction drawings in the City and ETJ:

Drainage Criteria
The City of Magnolia uses the Montgomery County Drainage Criteria Manual: Link

Runoff Reduction Requirement: Drainage systems shall include a means of retention/detention to provide a 10 percent reduction in runoff from pre-construction conditions. Requests for a lower percentage reduction must be approved in writing by the City Engineer or appointee designated by the Administrator. (UDC 5-4-1.02)

RFQ: Example RFQ Title