CSA W229.2:25

Preface This is the first edition of CSA W229.2, Geomatics for flood mapping. This Standard is based on the Natural Resources Canada open-source document Federal geomatics guidelines for flood mapping (Version 1.0, 2019). CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of the Standards Council of Canada. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was prepared by the Subcommittee on Geomatics for Flood Mapping, under the jurisdiction of the Technical Committee on Flood Mapping and the Strategic Steering Committee on Natural Resources, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 Inclusions This Standard provides requirements and recommendations for the following: a) geospatial data that is produced for a flood study, including data management, geospatial reference systems, file formats, geometric validity, data layer schema, and interoperability; b) data required for flood mapping, including digital terrain models (DTMs), imagery, and thematic geospatial datasets; c) map layout and base mapping requirements; d) specific requirements for different types of flood maps; and e) data ownership and copyright. 1.2 Exclusions This Standard does not cover bathymetric data collection or topo-bathymetric DTM development in detail. 1.3 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative non-mandatory) to define their application.