T 2 1 Centralized Watershed Planning System in Fairfax County Virginia

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T 2 1 Centralized Watershed Planning System in Fairfax County Virginia Powered By Docstoc
					Value and Benefits of a Centralized
   Watershed Planning System




John Zastrow, Tetra Tech
Overview

    Background
    Problems
    Solutions
    Value and Benefits
    Next Steps
 Fairfax County, Virginia

 Adjacent to Washington, D.C.
 About 1 Million Residents
 Rapidly Urbanizing
 30 Major Watersheds
 Hydrologic Contributor to
  Chesapeake Bay
 Watershed Management Plan
 Issues
 Watershed Management Plans
  (WMPs) are like other resource plans
 30 Static WMPs Developed Over
  Years
    Contain vital derived data, but
     rarely updated
    Data comparability between plans
     questionable at best – problematic
     for countywide analyses
 Lack of project tracking system
 Discovery and Access of WMP files
    Watershed Management Solution
 Consolidate, Update, and Centralize
    Plan Data
 Track Proposed Projects
      From proposed, through planning,
       and into implementation
 Provide Intuitive, Online Analysis
  Tools
      Not just a viewer, even for non-GIS
       users
 Reduce Effort
      For data maintenance, discovery,
       access
   Expand User Base
 KEEP IT SIMPLE
Implementation
 Technology was part of the solution, so here is what we
  did
    Build an online tool that is easy to use, focused on
     providing up-to-date numeric content as found in the
     watershed plans, but for the entire county
    Include value-added decision support tools that are
     also based on the latest information
System Architecture
Application:
    ESRI ArcGIS Server 9.2 (soon 9.3) for .Net
         ESRI .Net Web ADF
         Fused, tiled map cache for performance
         Asynchronous map components for interactivity
         Within Fairfax Enterprise .Net Library Framework
    Oracle Spatial – provides geoprocessing
       Reports through simple .Net web service
       Chosen for performance reasons
       County standard for geoprocessing
 ESRI ArcSDE provides data for Map Viewer
    Oracle SDO_geometry enabled through ArcSDE
     keyword
 Features

 Subwatersheds
  chosen by
    Name / association
     with parent
     features
    Map selection
 Reduced set of Web
  ADF components
 Fused Composite
  layers (Maps) based
  on user interests
  (Activities)
  Report Builder

 Allow some or all
  sections of report
  to be included
 Flexible
  geoprocessing
  allows results to
  be separated or
  combined in
  output
 Simple, focused
  interface
Combined Results Report
 Example of geoprocessing
  presented as aggregate or
  separate for each
  subwatershed
 Based on user choice
                              Summed,
                              Avg, Etc.
WMS Modules
                                                   Model Data Management
                                                       (VB.Net Pages)
 Completed Core Modules:
 •Map Viewer
                                                    WMP Viewer Module
 •Geoprocessing Framework                             (VB.Net Pages)
 •Reporting Framework
                                                  Proposed Projects Report
                                                          Module
                                 WMS Map Viewer        (VB.Net Pages)
                                  (ArcGIS Server)

                                                    Project Prioritization
                                                       (VB.Net Pages)


 Next Steps:
                                                      Summary Report
 •Project Prioritization                               (VB.Net Pages)
 •Proposed Projects Report
                                                  Geoprocessing Framework
                                                   (Web Services and Oracle
              Manage Proposed                              Spatial)
                  Projects              Proposed Project Data
              (ArcGIS Desktop)             Geographic Data
Value for County

  Data Access and Comparability
     Rapid access to current and consistent data
     Ease of use
     Web access increases number of possible users
  Cost Reduction and Improved Products
     Central data management to reduce costs
     Reduced effort to conduct sophisticated
      geoprocessing at large scales
Next Steps: Project
Prioritization
  Quantitative prioritization of watershed projects
  Annual countywide evaluation to determine projects to
   implement in coming year
     Relies on current data from many sources (hydrologic, water
      quality, physical assessments, citizen complaints, proposed
      projects (with costs/benefits)
     Eliminates time consuming manual desktop operations
  Produces ranking and detailed report for each project
  Reduces time to evaluate projects for implementation
  Applies a consistent evaluation approach
For additional information contact:
    Fred Rose
    Fairfax County, VA
    Watershed Planning & Assessment Branch
    fred.rose@fairfaxcounty.gov

    John Zastrow
    Tetra Tech, Inc.
    Information Technology Services
    john.zastrow@tetratech.com

				
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posted:8/7/2012
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