Flood Risk and Vulnerability Analysis Project - Atlantic Climate ...

Gaudon‟s Brook / Cold Brook
Stephenville
Table 3-3. Communities for which Flood Mapping data was provided by
WRMD in Shapefile format.
Flood lines for 17 communiites were captured from AutoCAD files posted on the WRMD
website.
Badger Outer Cove Shoal Harbour / Hodges Cove
Cox‟s Cove
Parson‟s Pont
Stephenville Crossing / Black
Duck Siding
Ferryland Petty Harbour Victoria
Hant‟s Harbour Portugal Cove / St. Philips Whiteboune
Heart‟s Delight Rushoon Winterton
Hickman‟s Harbour
Salmon Cove
Table 3-4 Communities for which flood mapping data was captured from
Autocad files
Flood lines for Goulds were not captured during this project as the data was not available.
Flood lines for the community of Waterford River were received in part by the City of Mount
Pearl and in part by the City of St. John‟s. The City of St. John‟s indicated the flood lines were
digitized from the WRMD maps and “approximately corrected” where the City of Mount Pearl
indicated the flood lines are considered unofficial and were originally in multiple sections and
these sections were joined where possible.
3.2 C2 – Delineate Community Flood Watersheds
A community flood watershed is defined in the Feature Codes – Flood Risk Mapping document
provided by WRMD as a “watershed for a community / water body that has experienced a
documented flood event”. It includes all areas of the watershed upstream of the community.
Delineation of community flood watersheds was completed in accordance with the standards
established by WRMD. The following key steps for this effort are outlined below:
The most up-to-date 1:50,000 NTS digital topographic data available from NRCan
GeoBase (January 2012) was obtained for the areas of interest.
The most up-to-date 1:50,000 DEMs from NRCan GeoBase (January 2012) for the
areas of interest were obtained. Where the information was not available, DEMs were
created using the 1:50,000 NTS vector topographic data.
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