| WMS is currently
digitizing FEMA Flood Insurance Rate Maps (FIRMs) to create digital flood
hazard maps (DFIRMs) and incorporate current MOA base map information through
the Federal Emergency Management Agency’s (FEMA) Map Modernization
program. Both WMS and the Planning Department’s Technical Services
Division are upgrading MOA base map digital spatial data sets through data
accuracy assessments and metadata upgrades to meet FEMA (NSSDA) standards. MOA
digital base map and flood hazard data will be used to populate FEMA-standard
DFIRM databases and digital flood hazard map views will be created using these
data. Once approved, digital data and flood hazard maps will be archived and
available both through FEMA and MOA websites. As part of this project WMS will
also incorporate the flood hazard digital data into its existing hydrography
geodatabase and use this GDB to track, update and archive data produced in
administering the MOA’s flood hazard mapping and permitting program.
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Product or Outcome
- Digital flood maps (DFIRMs), flood hazard geodatabase
Schedule - Draft flood hazard databases and DFIRMs are due June
2005. Final DFIRMS are due December 31, 2005
Contact - Reception Desk at 343-8135
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| WMS has the corporate
responsibility for preparing digital mapping for streams, lakes and marine
features within the Municipality. WMS also maintains wetlands spatial data in
partnership with the Planning Department. WMS maintains all these receiving
water digital data in a working hydrography geodatabase. To manage these
digital data, WMS develops logical data and metadata structures and data
dictionaries, performs field mapping and feature attribution, builds,
maintains, populates and secures digital data archives, and develops map views
and data distribution systems. Though it updates hydrographic mapping on an
on-going basis, WMS prepares and submits a compilation of new mapping for
incorporation into the corporate GIS only once annually as a new revision of
its hydrography geodatabase. All mapping information is transmitted as a
comprehensive copy of the latest WMS hydrography geodatabase with select
feature classes also published as shapefiles. However, annual MOA corporate
datasets may reflect selective censorship of the full attribution available
directly from the WMS hydrography geodatabase. Similarly, because the MOA
corporate GIS is updated with WMS hydrography data only once a year, the
official corporate hydrography is not likely to reflect the latest mapping
information available in the most current version of the WMS geodatabase.
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Product or Outcome - WMS hydrography geodatabase and selected
shapefiles
Schedule - On-going data updates; annual corporate submittal
Contact - Scott Wheaton
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| Drainage systems mapping
encompasses the entire interconnected network of features that carry surface
water in a basin (from ditches to streams) and their associated contributing
areas. Good mapping information of these systems is fundamental to efficient
planning and engineering design—and to watershed management. Though
mapping of receiving waters has improved substantially in the last few years,
unfortunately the MOA still depends upon incomplete mapping of drainageway
features and their associated Subdrainage Basins. WMS has
recently developed a logically integrated mapping system for these features and
has compiled pilot digital mapping of these features for Chester, Little
Campbell, Rabbit, Little Rabbit and Little Survival Creeks. Currently WMS is
working with MOA and DOT street maintenance groups and the Planning Department
Technical Services Division to expand this mapping to other watersheds and to
integrate and formalize this mapping as part of the MOA’s GIS. When
complete, digital data products will include drainageway network data
integrating storm pipes, road ditches and natural drainage swales, and
subdrainage basin areas, all related to receiving waters through discharge
features. Work will also include map products, including storm drainageway and
drainage area maps, and tools and formal processes for on-going update of the
digital mapping. |
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Product or Outcome
- Drainageway and subdrainage basin feature classes and digital
data and metadata; drainage feature work maps; data up-date tools
Schedule - Summer 2005 for select subwatersheds
Contact - Scott Wheaton
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