,This service represents CTDOT’s Stormwater Drainage Network. The data is collected from a collection of resources including completed construction plans, right-of-way plans, permits & field reconnaissance. Not all drainage features depicted on the map accurately reflect the condition of the drainage network that is currently built. Data is updated, modified and added daily by CTDOT to both grow the inventory of drainage structures statewide and to improve accuracy. Drainage data is collected for continued compliance of the CTDOT MS4 Permit and for CTDOT’s Asset Management Purposes.,Please refer to the CTDOT Maintenance Guide for definitions of all Drainage Features:,ctdot-ms4-gis-database-maintenance-guide-jan-2021.pdf,,This data is digitized at a scale of approximately 1:500 and was digitized from the 2016, 2019 and 2023 CT imagery.,The coordinate system used is NAD 1983 2011 State Plane Connecticut FIPS 0600 Ft US WKID: 6434 Authority: EPSG.,It is edited in the Drainage Network - Office Editors group and is maintained by the Office of Environmental Planning in the Bureau of Planning and the Office of Environmental Compliance in the Bureau of Engineering.,The data is updated daily. The metadata is updated as needed.,

The Curb Inlet REFDOC table should be used in conjunction with the Curb Inlet feature class https://data.austintexas.gov/dataset/Curb-Inlet/7rbw-mv35 with a join on the DRAINAGE_ID.

The Bridge Inlet REFDOC table should be used in conjunction with the Bridge Inlet feature class https://data.austintexas.gov/dataset/Bridge-Inlet/t598-em66 with a join on the DRAINAGE_ID.

The Combo Inlet REFDOC table should be used in conjunction with the Combo Inlet feature class https://data.austintexas.gov/dataset/Combo-Inlet/4cn2-4rhg with a join on the DRAINAGE_ID.

This layer indicates which areas contribute sanitary and storm water flow to a CSO overflow point. Areas are broken down by NPDES Outfall Number. The data source is DWW.cso_basin_plgn_pv. The layer continues to be updated as new information about the CSO system becomes available and as modifications to the system are completed. The boundaries in this layer were created and updated for purposes of developing a hydrologic and hydraulic computer model. The model was used to estimate CSO control volumes and develop CSO control alternatives. Estimation of control volume and alternative analysis did not require a parcel level of detail, so it is expected that the boundary is not always correct at the parcel level. In addition, the CSO basin boundary shapefile reflects both the sewer basin AND the drainage basin tributary to the overflow point, and these two basins do not always line up cleanly. This layer reflects the best compromise between the two boundaries.,

Drainage pipe data showing the underground network of drainage infrastructure. Developed using the open council data standard (0.2) http://standards.opencouncildata.org/#/drainpipes

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