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The City of Corvallis Collections access structures database was derived from paper source maps. The data provides a representation of the geometry and topology of the stormwater and wastewater facilities maintained by the Public Works Collections Crew.
The City of Corvallis, Oregon utility system GIS features are derived from a variety of source maps including: as-built construction plans (PIPC), City designed projects (CIP), field crew edits and historic field maps. New developments generally come from private contracts and use survey data to ensure accuracy.