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Using GIS for Utility Mapping and Asset Management Sanitary Sewer, Storm Sewer, and Water Distribution City of Mason City. Jessy Willadsen - Mason City GIS Analyst. First Question: Why include utilities into your GIS?. View information graphically. View different layers together.

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Jessy Willadsen - Mason City GIS Analyst

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Using GIS for Utility Mapping and Asset ManagementSanitary Sewer, Storm Sewer, and Water DistributionCity of Mason City

Jessy Willadsen - Mason City GIS Analyst

first question why include utilities into your gis
First Question: Why include utilities into your GIS?
  • View information graphically.
  • View different layers together.
  • Store attribute information about features.
  • Link features to scanned records.
  • You only have to store the location of features once.
  • 80-90% of data maintained by government has a spatial component.
where do you start
Where do you start?
  • Went to each department to evaluate what their GIS needs were.
  • Features requested
  • Attributes needed
  • Potential use of data (use this for prioritization)
  • Planned source to collect the features and what method will be used to create the data.
needs assessment
What GIS layers should be created.

What data will be needed to create these GIS layers.

Where is this data located.

Prioritize what GIS layers will be created first.

Needs Assessment
creating data
Creating data
  • GPS Data collection: Collect features by GPS and import them into the GIS system.
  • Aerial photography interpretation: Example, you can see manholes in the aerial photography.
  • Measurements from known locations: Example: Measure water valve from the center of the road or from property corners.
purchase of survey grade gps
Purchase of Survey Grade GPS
  • In 2008, the City purchased survey grade GPS equipment.
  • The Leica GPS 1200 unit utilizes the Iowa Real Time Network.
  • Using a cellular modem, the GPS controller receives correction data from the internet in real time.
engineering and operations maintenance priorities
Engineering and Operations & Maintenance Priorities
  • Sanitary Sewer System
  • Storm Sewer System
  • Water Distribution System
  • Road infrastructure
sanitary sewer
Primary Features:



Other features Mapped:

Caps and plugs


Private mains and manholes

Service lines including wyes and stubs


Sanitary Sewer
sanitary sewer evolution
Sanitary Sewer Evolution
  • CAD Files converted to GIS
  • Improvement of location in GIS of Mains and Manholes
  • Link to external database
  • Link to field books for each service
  • Link to CCTV sewer videos.
  • Link to sewer profiles.
  • Repair Mapping
sanitary sewer future development ideas
Sanitary Sewer Future Development / Ideas
  • Maintain existing functionality
  • Complete GPS collection of all manholes
  • Map service connections
  • Scan plans and link to GIS.
sanitary sewer common attributes
Sanitary Sewer Common attributes
  • Pipe Material
  • Pipe Size
  • More?
water distribution
Primary Features





Other features Mapped

Service lines

Cutoffs and Corporation

Turning zones and Flushing routes

Main breaks

Wells, Water Towers, Booster Stations, and reservoirs

Reducers and Hydra-stoppers

Water Distribution
water distribution evolution
Water Distribution Evolution
  • No Usable CAD files to import
  • GPS collected valves and hydrants
  • Draw mains using water book as reference.
  • Used database as reference also which contained measurements from the center of the road and sidewalk.
water distribution features
Water Distribution Features
  • Link to external database for valves and hydrants
  • Link to external database for service points
water distribution typical attributes
Water Distribution Typical Attributes
  • Pipe Material
  • Pipe Diameter
  • Valve Type (Main or Hydrant)
  • Cutoff Address
water distribution future development ideas
Water Distribution Future Development/Ideas
  • Maintain existing advancements.
  • Migrate the microsoft access database to an enterprise database such as postgre.
  • Scan service records for each water service and link to GIS.
  • Continue GPS collecting Valves, Hydrants, and Water Cutoffs.
  • Link service data to cutoffs.
storm sewer
Storm Sewer
  • Primary Features
    • Main
    • Intake
    • Manhole
    • Discharge
storm sewer1
Storm Sewer
  • Other features Mapped
    • Abandoned pipe
    • Districts
    • Lift Station
    • Private mains, intakes
    • Services
the end
The End
  • Questions
  • Comments