York County HYDRO Floodplains

The National Flood Hazard Layer (NFHL) is a compilation of GIS data that comprises a nationwide digital Flood Insurance Rate Map. The GIS data and services are designed to provide the user with the ability to determine the flood zone, base flood elevation, and floodway status for a particular location. It also has information about the NFIP communities, map panels, cross sections, hydraulic structures, Coastal Barrier Resource System, and base maps such as road, stream, and public land survey data. Through flood studies, FEMA produces Flood Insurance Study Reports, FIRM Panels, and FIRM Databases. FIRM Databases that become effective are incorporated into the NFHL. Updates to the NFHL are issued through Letters of Map Revision (LOMRs) and Letters of Map Amendment (LOMAs). Continuously updated, the NFHL serves as a Digital Flood Insurance Rate Map representing the current effective flood data for those communities where maps have been digitized. NFHL data can be viewed with widely available GIS software, including freely available programs that work with GIS shapefiles. For more information on the NFHL, see the online resources referenced herein. Using base maps: The minimum horizontal positional accuracy for base map hydrographic and transportation features used with the NFHL is the NSSDA radial accuracy of 38 feet. Letter of Map Amendment (LOMA) point locations are approximate. The location of the LOMA is referenced in the legal description of the letter itself. LOMA points can be viewed in the NFHL Interactive Map on the FEMA GeoPlatform.

Data and Resources

Field Value
access_constraints ["Use Constraints: The hardcopy FIRM and FIRM Database and the accompanying FIS are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. Acknowledgement of FEMA would be appreciated in products derived from these data.", "Access Constraints: None"]
bbox-east-long -76.229332
bbox-north-lat 40.228228
bbox-south-lat 39.712828
bbox-west-long -77.102901
contact-email FEMAMapSpecialist@riskmapcds.com
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2018-01-01"}]
frequency-of-update monthly
licence ["No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty. The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided \"as is\" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation."]
metadata-date 2018-12-17
metadata-language eng; USA
metadata_type geospatial
progress underDevelopment
resource-type dataset
responsible-party [{"name": "Federal Emergency Management Agency", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-77.102901, 39.712828], [-76.229332, 39.712828], [-76.229332, 40.228228], [-77.102901, 40.228228], [-77.102901, 39.712828]]]}
spatial_harvester true
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alabama
  • alaska
  • american-samoa
  • amerigeo
  • amerigeoss
  • arizona
  • arkansas
  • base-flood-elevation
  • california
  • cbrs
  • ckan
  • coastal-barrier-resources-system
  • coastal-flooding
  • colorado
  • connecticut
  • delaware
  • district-of-columbia
  • elevation-theme
  • federated-state-of-micronesia
  • fema-flood-hazard-zone
  • firm
  • firm-database
  • flood-insurance-rate-map
  • floodway
  • florida
  • geo
  • georgia
  • geoss
  • guam
  • hawaii
  • idaho
  • illinois
  • indiana
  • iowa
  • kansas
  • kentucky
  • louisiana
  • maine
  • marshall-islands
  • maryland
  • massachusetts
  • michigan
  • minnesota
  • mississippi
  • missouri
  • montana
  • national
  • national-geospatial-data-asset
  • nebraska
  • nevada
  • new-hampshire
  • new-jersey
  • new-mexico
  • new-york
  • nfip
  • ngda
  • north-america
  • north-carolina
  • north-dakota
  • northern-mariana-islands
  • ohio
  • oklahoma
  • oregon
  • palau
  • pennsylvania
  • puerto-rico
  • rhode-island
  • riverine-flooding
  • sfha
  • south-carolina
  • south-dakota
  • special-flood-hazard-area
  • tennessee
  • texas
  • united-states
  • us-minor-islands
  • utah
  • vermont
  • virgin-islands
  • virginia
  • washington
  • west-virginia
  • wisconsin
  • wyoming
isopen False
metadata_created 2025-11-21T11:08:02.295451
metadata_modified 2025-11-21T11:08:02.295455
notes The National Flood Hazard Layer (NFHL) is a compilation of GIS data that comprises a nationwide digital Flood Insurance Rate Map. The GIS data and services are designed to provide the user with the ability to determine the flood zone, base flood elevation, and floodway status for a particular location. It also has information about the NFIP communities, map panels, cross sections, hydraulic structures, Coastal Barrier Resource System, and base maps such as road, stream, and public land survey data. Through flood studies, FEMA produces Flood Insurance Study Reports, FIRM Panels, and FIRM Databases. FIRM Databases that become effective are incorporated into the NFHL. Updates to the NFHL are issued through Letters of Map Revision (LOMRs) and Letters of Map Amendment (LOMAs). Continuously updated, the NFHL serves as a Digital Flood Insurance Rate Map representing the current effective flood data for those communities where maps have been digitized. NFHL data can be viewed with widely available GIS software, including freely available programs that work with GIS shapefiles. For more information on the NFHL, see the online resources referenced herein. ___Using base maps:___ The minimum horizontal positional accuracy for base map hydrographic and transportation features used with the NFHL is the NSSDA radial accuracy of 38 feet. ___Letter of Map Amendment (LOMA) point locations___ are approximate. The location of the LOMA is referenced in the legal description of the letter itself. LOMA points can be viewed in the NFHL Interactive Map on the FEMA GeoPlatform.
num_resources 1
num_tags 84
title York County HYDRO Floodplains