PEMA Orthoimagery 2018 - York County Mosaic

This orthoimagery data set includes 0.5-foot (15-centimeter) 8-bit 4-band (RGBN) digital orthoimage tiles in GeoTIFF format. Geographic Extent: The York County AOI covers approximately 1019 total square miles (2639 total square kilometers) in the Commonwealth of Pennsylvania. Dataset Description: The PEMA 2018 0.5-foot Orthoimagery - York County Delivery project called for the planning, acquisition, processing, and derivative products of imagery data to be collected at a ground sample distance (GSD) of 0.5-foot (15 centimeters). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Ortho Specification, Version 1.0. The data were developed based on a horizontal projection/datum of NAD83 (2011) State Plane Pennsylvania South FIPS 3702, US Survey Feet. Orthoimagery data was delivered as 284 individual 0.5-foot (15-centimeter) 1" = 100' (1 cm = 12 m) GeoTIFF (uncompressed) 10,000-foot x 10,000-foot (3,048-meter x 3,048-meter) tiles. Ground Conditions: Aerial photography was captured during the winter and spring of 2018, while no snow was on the ground and rivers were at or below normal levels. In order to post process the imagery data to meet task order specifications and meet horizontal accuracy guidelines, Quantum Spatial, Inc. utilized a total of 496 QC points throughout the Commonwealth of Pennsylvania to assess the horizontal accuracy of the data. These checkpoints were not used to calibrate or post process the data.

Data and Resources

Field Value
access_constraints ["Use Constraints: None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations.", "Access Constraints: None"]
bbox-east-long -76.9626752469
bbox-north-lat 39.7151720508
bbox-south-lat 39.6874827837
bbox-west-long -76.9985210868
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2019-04-11"}]
frequency-of-update notPlanned
licence ["The Pennsylvania Emergency Management Agency shall not be held liable for improper or incorrect use of this data. This data and related graphics are not legal documents and are not intended to be used as such. The information contained in this data is dynamic and may change over time. The data is not better than the original sources from which it was derived. It is the responsibility of the data user to use the data appropriately and within the limitations of geospatial data in general. The Pennsylvania Emergency Management Agency gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of this data. It is strongly recommended that this data be directly acquired from the Pennsylvania Emergency Management Agency, and not indirectly through other sources which may have changed the data in some way. This disclaimer applies both to individual use of the data and aggregate use with other data."]
metadata-date 2019-04-10
metadata-language eng; USA
metadata_type geospatial
progress completed
resource-type dataset
responsible-party [{"name": "Quantum Spatial", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-76.9985210868, 39.6874827837], [-76.9626752469, 39.6874827837], [-76.9626752469, 39.7151720508], [-76.9985210868, 39.7151720508], [-76.9985210868, 39.6874827837]]]}
spatial_harvester true
temporal-extent-begin 2018-03-18
temporal-extent-end 2018-12-11
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • commonwealth-of-pennsylvania
  • geo
  • geoss
  • national
  • north-america
  • united-states
  • york-county
isopen False
metadata_created 2025-11-22T12:22:21.512219
metadata_modified 2025-11-22T12:22:21.512223
notes This orthoimagery data set includes 0.5-foot (15-centimeter) 8-bit 4-band (RGBN) digital orthoimage tiles in GeoTIFF format. Geographic Extent: The York County AOI covers approximately 1019 total square miles (2639 total square kilometers) in the Commonwealth of Pennsylvania. Dataset Description: The PEMA 2018 0.5-foot Orthoimagery - York County Delivery project called for the planning, acquisition, processing, and derivative products of imagery data to be collected at a ground sample distance (GSD) of 0.5-foot (15 centimeters). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Ortho Specification, Version 1.0. The data were developed based on a horizontal projection/datum of NAD83 (2011) State Plane Pennsylvania South FIPS 3702, US Survey Feet. Orthoimagery data was delivered as 284 individual 0.5-foot (15-centimeter) 1" = 100' (1 cm = 12 m) GeoTIFF (uncompressed) 10,000-foot x 10,000-foot (3,048-meter x 3,048-meter) tiles. Ground Conditions: Aerial photography was captured during the winter and spring of 2018, while no snow was on the ground and rivers were at or below normal levels. In order to post process the imagery data to meet task order specifications and meet horizontal accuracy guidelines, Quantum Spatial, Inc. utilized a total of 496 QC points throughout the Commonwealth of Pennsylvania to assess the horizontal accuracy of the data. These checkpoints were not used to calibrate or post process the data.
num_resources 1
num_tags 10
title PEMA Orthoimagery 2018 - York County Mosaic