SMMS METADATA REPORT ...of point data denoting the locations of culverts and other drainage structures. ... Entity Type Definition: Culverts & Drainage Structures for OR/WA
Drainage Guidelines Unless specified otherwise, contractors have the option to use pre-cast or cast-in-place drainage structures. Cast-in-place structures shall be
Section 18.28.080 Flood-prone lands and drainage. Plans for drains and drainage structures shall be adequate for local drainage ... The design for drainage structures and facilities shall be based on a
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