Stormwater network model from as-built PDFs
A City in Maryland, USA, required to develop a spatial GIS database for the storm water infrastructure within the City.
Storm drain information had to be extracted from plans and entered into the GIS. There were approximately 900 as-built pdfs which contain stormwater features to be digitized.
Digitize Stormwater Features Stormwater features were digitized from the provided as-builts and imagery. Features to be included are storm drain pipes (plan view), roadside swales, manholes, inlets, outfalls, etc. The attributes included pipe diameter, pipe material, rim elevation, invert elevations. Data capture also included a reference field with the name and year of the as-built used to create features.
A job of more than 2000-man hours, it was executed successfully ensuring accuracy, uniformity, completeness and timeliness
Stormwater Feature | Description | Geography Type |
|---|---|---|
swCleanOut | Diameter, Material, Device Type, Enabled, Active Flag, Owned By, Maintained By, Map Reference, Year, Location Description, Source Type | Point |
swDetention | Active Flag, Owned By, Maintained By, Invert Elevation, Outflow Elevation, Map Reference, Location Description, Year, Source Type | Polygon |
swDischargePoint | Discharge Type, Diameter, Map Reference, Location Description, Year, Source Type | Point |
swFitting | Fitting Type, Enabled, Active Flag, Owned By, Maintained By, Diameter, Map Reference, Location Description, Year, Source Type | Point |
swGravityMain | Material, Diameter, Pipe Type, Upstream Elevation, Downstream Elevation, Slope, From MH, To MH, Enabled, Active Flag, Owned By, Maintained By, Map Reference, Location Description, Year, Source Type | Line |
swInlet | Inlet Type, Access Diameter, Invert Elevation, Map Reference, Location Description, Year, Source Type | Point |
swManhole | High Pipe Elevation, Invert Elevation, Invert, Rim Elevation, Manhole Type, Location Description, Enabled, Active Flag, Owned By, Maintained By, Map Reference, Source Type | Point |
swOpenDrain | Enabled, Active Flag, Map Reference, Location Description, Year, Source Type | Line |
swSwale | Active Flag, Owned By, Maintained By, Map Reference, Location Description, Year, Source Type | Polygon |
swReview | Details, Comment, Client Response, Resolved | Point |