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  1. Municipal GIS ApplicationsJOHN C. CHLARSON, P.E.UNIVERSITY OF TENNESSEEMUNICIPAL TECHNICAL ADVISORY SERVICE F URE

  2. Municipal GIS Applications What are local governments doing with GIS?

  3. Municipal GIS Applications What are local governments doing with GIS? Water/Sewer/Storm Asset Management Work Order Management Field Data Collection Capital Improvement Planning Workforce Management

  4. Municipal GIS Applications What are local governments doing with GIS? Public Works Asset Management Work Order Management Field Data Collection Capital Improvement Planning Call Center Integration Tree Inventories

  5. Municipal GIS Applications What are local governments doing with GIS? Emergency Management Ad-Hoc Map Production Incident Management System Integration Common Operational Picture Field Data Collection Public Safety/HLS Exercise & Evaluation Programs

  6. Municipal GIS Applications What are local governments doing with GIS? Law Enforcement Crime Analysis & Reporting CAD/RMS Integration Common Operational Picture/ComStat Critical Infrastructure Protection and Planning (BZPP) Mobile Data Solutions (Mobile Data Terminals)

  7. Municipal GIS Applications What are local governments doing with GIS? Land Records Management CAMA Integration Public Access Land Assessment & Analysis Mobile Data Collection

  8. Cartography

  9. What Survey Control is within 1/2 mile of my project area? Well type Drilled Building owner Smith Soil type Sandy Information Management Which parcels are within 50 feet of the road? • Proximity • Overlay • Network

  10. Land Use and Transportation Regional Planning Urban Planning Sustainability Transportation

  11. Infrastructure Water Systems Cadastral Sewer Storm Water Traffic Flood Control Electric Utilities

  12. Natural Environment Environmental Marine Hydrology Geology

  13. Public Safety Hurricanes Earthquakes Crime Dam Rupture Coastal Flooding Fire

  14. HomelandSecurity Disaster Assessment Security Maps on Demand Airborne Contaminants Scenario Management

  15. Engineering and Construction Site Engineering Asset Management Construction Facilities Management Surveying

  16. Stormwater: GIS and TMDL Monitoring • TMDL monitoring for the MS4s will be pendant on the specific type of TMDL. There are three protocols: • Visual Stream Assessment and Inventory - based on EPA’s and NRCS’s visual assessment protocols and is being developed by Jimmy Smith and John Burr. The basics in the assessments will be the identification, documentation and prioritization of the sources of the pollution within the entire HUC 12 watersheds within a 5-year period. • RBP3 protocol - strait from our SOP/QAPP and will include at least one sample per HUC 12 in a 5-year period. • Chemical and biological - also from our SOPs/QAPP, utilizing the identified parameter lists and methodologies and will include 1 set of samples (12 monthly/4 during high flow) per 5-year period.

  17. Stormwater: GIS and TMDL Monitoring The chart below is a summary of the requirements:

  18. Stormwater: GIS and TMDL Monitoring

  19. Stormwater: GIS Methodology

  20. What isLow Impact Development? • Comprehensive, landscape-based approach to sustainable development • Set of strategies to maintain existing natural systems, hydrology, ecology • Cost-effective, flexible approach based on a toolkit of simple techniques • Collection of practices that have been implemented nationwide

  21. WHY DO WE NEED LOW IMPACT DEVELOPMENT?Conventional strategies aren’t working • Increased runoff & decreased recharge • Loss of vegetation and wildlife habitat • Loss of community character • Polluted waterways • Cost of development

  22. WHY DO WE NEED LOW IMPACT DEVELOPMENT? Typical pre-development conditions: Runoff = 10% Infiltration = 50%

  23. WHY DO WE NEED LOW IMPACT DEVELOPMENT? Typical post-development conditions: Runoff = 55% Infiltration = 15%

  24. LID PRINCIPLESUse existing natural systems as the integrating framework for site planning • Land use planning and watershed planning • Identify environmentally sensitive resources: wetlands, mature trees, slopes, drainageways, permeable soils, waterway buffers • Assess existing hydrology • Define a development envelope

  25. LID STRATEGIESLow Impact Site Design • Conservation of natural hydrology, trees, vegetation • Stream & wetland buffers • Minimize impervious surfaces • Stormwater micromanagement • Ecological landscaping Conservation Typical Subdivision

  26. LID STRATEGIESLow Impact Site Design Open Space Residential Design 1. Identify Conservation Areas

  27. LID STRATEGIESLow Impact Site Design Open Space Residential Design 1. Identify Conservation Areas 2. Locate House Sites

  28. LID STRATEGIESLow Impact Site Design Open Space Residential Design 1. Identify Conservation Areas 2. Locate House Sites 3. Align Roads & Trails

  29. LID STRATEGIESLow Impact Site Design Open Space Residential Design 1. Identify Conservation Areas 2. Locate House Sites 3. Align Roads & Trails 4. Draw the Lot Lines

  30. LID STRATEGIESLow Impact Site Design Buildings and Roadways • Cluster buildings within the development envelope • Design buildings with smaller footprints • Roadways should follow existing grades. • Use parking structures • Separate parking areas

  31. LID STRATEGIESLow Impact Site Design Stormwater Management • Minimize directly connected impervious area • Create multiple sub-watersheds • Increase time of concentration • Use a “treatment train” of LID techniques to deal with frequent, low-intensity storms.

  32. LID STRATEGIESLow Impact Site Design Stormwater Management • Minimize directly connected impervious area • Create multiple sub-watersheds • Increase time of concentration • Use a “treatment train” of LID techniques to deal with frequent, low-intensity storms.

  33. LID STRATEGIESLow Impact Site Design

  34. Municipal GIS Applications What GIS assistance would local governments like to have from the State? Among other things, an easily accessible clearing house entity that coordinates lists, locations, and links to the various GIS datasets, etc. that different groups within state government have produced. Without such a source, local governments don’t know “what they don’t know”. That is, they don’t know what is available, or who has it.