Description: A storm water manhole provides an access point along an enclosed storm drainage system. Manhole structures are a component of the stormwater system and can provide one or more of the following: -Access at desired intervals for system inspection and maintenance -Changes in horizontal direction -Junctions for connecting pipes -Vertical drops along a pipe system -Sediment traps -Utility crossing conflicts
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: Control Structures regulate storm water flow discharging from a Storm Water Management Facility. This dataset contains the Control Structures owned or operated by either the City of Jacksonville Florida or the Florida Department of Transportation District 2 within Duval County Florida.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: Outfall means a point source at the location where a municipal separate storm sewer discharges to water of the state and does not include open conveyances connecting two municipal separate storm sewers, or pipes, tunnels or other conveyances which connect segments of the same stream or other waters of the state and are used to convey waters of the state. Point source is defined as any discernible, confined, and discrete conveyance, such as any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, or landfill leachate collection system from which pollutants are or may be discharged.
Copyright Text: This dataset has its foundations in the dedicated efforts of multiple field personnel in the employ of Robert M. Angas and Associates of Jacksonville Florida.
Description: An Inlet provides a collection point for storm water runoff along an enclosed storm drainage system. Inlets are a component of the storm water system and are located along the curbed edge of paved surfaces or the low point of paved areas to provide one or more of the following: -Collection of storm water runoff -Access for inspection and maintenance -Changes in horizontal storm pipe direction -Junctions for connecting pipes -Junctions for changes in pipe sizes -Sediment traps -Conflicts with other utilities
Description: An Endwall is the discharge point of a drainage system or culvert into a receiving water body (in most cases a pond, open conveyance, wetland, or stream). Endwalls differ from ends of pipe in that they have a structure associated with them that controls erosion around the discharge point.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: A ditch block is a barrier, or weir, that is placed in a ditch. A ditch block allows water to flow through the ditch only after the water has reached a certain level. Usually this level is set as the bottom of a slot cut into the block. The shape of the slot can vary. Ditch blocks restrict flow through a ditch for flow management and water treatment (quality) purposes.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: A culvert is a pipe; or other closed conveyance, used to transport storm water. Culverts differ from pipes in that they are open to the air on both ends. Notably, cross and side drains are included as part of this data set. The culverts contained herein are those that fall within the limits of the City of Jacksonville (COJ) and that are owned or maintained by the COJ or the Florida Department of Transportation District II.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: A closed conveyance is a pipe or other closed conveyance used to transport storm water. Notably, cross and side drains are not included as part of this data set. The closed conveyances contained herein are those that fall within the limits of the City of Jacksonville (COJ) and that are owned or maintained by the COJ or the Florida Department of Transportation District II.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: An open conveyance is a ditch or other long narrow manmade trench used to convey stormwater. The open conveyances contained herein are those that fall within the limits of the City of Jacksonville (COJ) and that are owned or maintained by the COJ or the Florida Department of Transportation District II.
Copyright Text: The original municipal separated storm sewer system (MS4) inventory (1997-2007); upon which this dataset has its foundation, was funded by the City of Jacksonville and the Florida Department of Transportation District II.
Description: A stormwater valve controls the passage of stormwater through a pipe, especially an automatic device allowing movement in one direction only. Typically used to prevent water from flowing into the system at a point where water should be flowing out of the system, but may also disallow flow in a particular direction for any reason. An example of a typical valve location is a pipe that discharges to a waterbody that is effected by tide or weather conditions which might cause the level of that waterbody to rise during a severe storm event, thereby allowing water into the system at a point where water should be exiting.
Copyright Text: The data contained herein was provided via multiple source by the City of Jacksonville (COJ), Florida. The data was entered manually by GIS technicians working for a private consulting firm employed by the COJ for this purpose. Valve locations were drawn manually on field markups or record drawing sources and were not provided in a digital form containing coordinate data of any kind. Visual cues were used to place the valves relative to cues common to both the sources and the MS4 GIS inventory, or the basemap used by the GIS technician.