This feature class includes streams digitized from Parametrix field inventory of 2003 and those added using AutoCAD drawings submitted as deliverables from a project site or other environmental work. Streams inventoried as part of City projects that have their information delivered as shapefiles or ACAD drawings are added to the feature class. Periodically PC Streams is referenced as is the 2017 Contour feature class. During the March 2019 update, Josh Grbich in Collections, was consulted as he has formidable knowledge of City drainage.

Also, during the March 2019 update several streams were removed with information provided by Josh Grbich. Using PC's 2017 Contours, some stream channels were altered to follow topography correctly. As part of this update, the direction of flow was established using known information and input from the Collections Department. Direction of flow was corrected in many cases. This feature class can now be used for networking with other feature classes with flow.