Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN><SPAN>Drainage and wastewater area tributary to permitted combined sewer overflow (CSO) overflow points.</SPAN></SPAN></P></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 0 0;"><SPAN>Areas where flow of water is over impervious surfaces, ditch/culvert systems or small private drainage systems to a receiving waterbody.</SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 0 0;"><SPAN>Areas that drain to a receiving water body via outfall(s) in the formal or piped infrastructure. </SPAN></P></DIV>
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Active smaller structures that provide piped access such as wyes, clean outs or stand pipes. Other feature types such as bends are also included.</SPAN></SPAN></P><DIV><P><SPAN /></P></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Designed large structures that will define the end of a mainline such as maintenance holes, vaults, plugs, or other designated features.</SPAN></SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN><SPAN>An outfall is where drainage water leaves a pipe and drains out of the formal sewer and drainage system into a stream, body of water, ditch, etc.</SPAN></SPAN></P></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>NPDES(National Pollutant Discharge Elimination System) outfalls permitted through the Environmental Protection Agency. For more information, please see the EPS website: http://water.epa.gov/polwaste/npdes/basics/index.cfm.</SPAN></P></DIV></DIV>
Description: A presentation feature class displaying large structures that define the end of a mainline such as maintenance holes, vaults, plugs, or other designated features.
Description: A presentation feature class displaying the footprint of various structures as described within the descriptive text column of the feature class.
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN><SPAN>Perennial and intermittent natural surface water flow identified and recognized as a watercourse by the Seattle Public Utilities.</SPAN></SPAN></P></DIV></DIV>
Description: This layer displays all connected or to be connected drainage, sanitary, and combined mainline pipes within the City of Seattle (and the former service area north of the City limits) regardless of ownership and not including detention systems. Probable flow is the derived use classification based on what is the best estimation of usage broken out by combined sewer, drainage, and sanitary. A combined sewer is a type of sewer system that collects sanitary sewage and stormwater runoff into a single pipe system. A sanitary sewer is a type of underground system for transporting sewage . A drainage system transports waste water from buildings and water run-off from streets.
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>The classification of SPU infrastructure in the City of Seattle and the former service area north of the City limits into areas of piped flow where storm water flow is either separated, partially separated, or combined with sanitary flow. </SPAN></SPAN><SPAN>An area with separated flow means that drainage flow is in drainage pipes only. A partially separated area means that some pipes are present that have both drainage and sanitary flow. A combined area has all pipes carrying sanitary and drainage flow.</SPAN></P><DIV><P><SPAN /></P></DIV></DIV>