establish or update flood-risk zone data in all such areas, and make estimates with respect to the rates of probable flood caused loss for the various flood risk zones for each such area; and

use, in identifying, reviewing, updating, maintaining, or publishing any National Flood Insurance Program rate map required under this section or under the National Flood Insurance Act of 1968 (42 U.S.C. 4011 et seq.), the most accurate topography and elevation data available.

assess the accuracy of current ground elevation data used for hydrologic and hydraulic modeling of flooding sources and mapping of the flood hazard and wherever necessary acquire new ground elevation data utilizing the most up-to-date geospatial technologies in accordance with guidelines and specifications of the Federal Emergency Management Agency; and

any relevant information of the United States Geological Survey on stream flows, watershed characteristics, and topography that is useful in the identification of flood hazard areas, as determined by the Administrator;

any relevant information on land subsidence, coastal erosion areas, changing lake levels, and other flood-related hazards;

any relevant information or data of the National Oceanic and Atmospheric Administration and the United States Geological Survey relating to the best available science regarding future changes in sea levels, precipitation, and intensity of hurricanes; and

any other relevant information as may be recommended by the Technical Mapping Advisory Committee.

facilitate identification and use of consistent methods of data collection and analysis by the Administrator, in conjunction with State and local governments, in developing maps for communities with similar flood risks, as determined by the Administrator; and

digital geospatial data compliant;

compliant with the open publishing and data exchange standards established by the Open Geospatial Consortium; and

aligned with official data defined by the National Geodetic Survey.

before commencement of any mapping or map updating process, notify each community affected of the model or models that the Administrator plans to use in such process and provide an explanation of why such model or models are appropriate;

provide each community affected a 30-day period beginning upon notification under subparagraph (A) to consult with the Administrator regarding the appropriateness, with respect to such community, of the mapping model or models to be used; provided that consultation by a community pursuant to this subparagraph shall not waive or otherwise affect any right of the community to appeal any flood hazard determinations;

upon completion of the first Independent Data Submission, transmit a copy of such Submission to the affected community, provide the affected community a 30-day period during which the community may provide data to Administrator 1 that can be used to supplement or modify the existing data, and incorporate any data that is consistent with prevailing engineering principles;

work with States, local communities, and property owners to identify areas and features described in subsection (b)(1)(A)(v);

engage with local communities to enhance communication and outreach to the residents of such communities, including tenants (with regard to contents insurance), on the matters described under subparagraph (E);

upon the issuance of any proposed map and any notice of an opportunity to make an appeal relating to the proposed map, notify the Senators for each State affected and each Member of the House of Representatives for each congressional district affected by the proposed map of any action taken by the Administrator with respect to the proposed map or an appeal relating to the proposed map.

notifying property owners when their properties become included in, or when they are excluded from, an area covered by the mandatory flood insurance purchase requirement under section 4012a of this title;

educating property owners regarding the flood risk and reduction of this risk in their community, including the continued flood risks to areas that are no longer subject to the flood insurance mandatory purchase requirement;

educating property owners regarding the benefits and costs of maintaining or acquiring flood insurance, including, where applicable, lower-cost preferred risk policies under the National Flood Insurance Act of 1968 (42 U.S.C. 4011 et seq.) for such properties and the contents of such properties;

educating property owners about flood map revisions and the process available to such owners to appeal proposed changes in flood elevations through their community, including by notifying local radio and television stations; and

encouraging property owners to maintain or acquire flood insurance coverage.