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USGS High Resolution Orthoimagery for Polk County, Iowa: 15TVG590095_201304_0x1250m_4B_1


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2015-11-18 18:10:00


U.S. Geological Survey, and Polk County Assessors Office, 2014, USGS High Resolution Orthoimagery for Polk County, Iowa: 15TVG590095_201304_0x1250m_4B_1: U.S. Geological Survey: Sioux Falls, SD,,,


"Digital Color orthophotography covering Polk County, Iowa" An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. There is no image overlap between adjacent files.Data received at Earth Resources Observation and Science Center (EROS) were reprojected from:Projection: NAD_1983_StatePlane_Iowa_South_FIPS_1402_FeetResolution: 0.4 feetType: 4 Bandto:Standard Product Projection: NAD_1983_UTM_Zone_15NStandard Product Resolution: 0.1250 mRows: 12000Columns: 12000and resampled to align to the U.S. National Grid (USNG) using [...]


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"This digital geographically referenced data set was developed for the Polk County Iowa Assessors Office to carry out County government tasks." A digital orthoimage is a geometrically accurate photographic record of landscape conditions at the time of the corresponding aerial photography. As such, High Resolution Orthoimagery is useful for a variety of applications, such as environmental monitoring, facility engineering/maintenance, city/county planning, property line review, etc. The digital orthoimage can be used alone or as a raster basemap for corresponding vector line mapping. The detailed focus of High Resolution Orthoimagery provides emergency responders critical information in determining the best evacuation routes, alternative routes and safe access to aid. High Resolution Orthoimagery assists law enforcement personnel in determining the best locations to place surveillance cameras in high-traffic urban areas and popular attractions. The data assists Federal, State and local emergency responders in planning for homeland security efforts. This data also supports The National Map.

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id gda 7624203

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