Iowa LiDAR Mapping Project

Metadata Updated: November 14, 2017

This is collection level metadata for LAS and ASCII data files from the statewide Iowa Lidar Project. The Iowa Light Detection and Ranging (LiDAR) Project collects location and elevation (X, Y, Z) data to a set standard for the entire state of Iowa. LIDAR is defined as an airborne laser system, flown aboard rotary or fixed-wing aircraft, that is used to acquire x, y, and z coordinates of terrain and terrain features that are both manmade and naturally occurring. LIDAR systems consist of a light-emitting scanning laser, an airborne Global Positioning System (GPS) with attendant GPS base station(s), and an Inertial Measuring Unit (IMU). The laser scanning system measures ranges from the scanning laser to terrain surfaces by measuring the time it takes for the emitted light (LIDAR return) to reach the earth's surface and reflect back to the onboard LIDAR detector. The airborne GPS system ascertains the in-flight three-dimensional position of the sensor, and the IMU delivers precise information about the attitude of the sensor. The LIDAR system incorporates data from these three subsystems to produce a large cloud of points on the land surface whose X, Y, and Z coordinates are known within the specified accuracy. This collection consists of ASCII files of bare earth elevations and intensity (x,y,z,i) and, LAS (version 1.0 lidar data interchange standard) binary files that include all 1st and last returns, intensity and bare earth classification.

Access & Use Information

Downloads & Resources

Dates

Metadata Date March 8, 2010
Metadata Created Date November 14, 2017
Metadata Updated Date November 14, 2017
Reference Date(s) January 1, 2007 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from FEMA-R07

Additional Metadata

Resource Type Dataset
Metadata Date March 8, 2010
Metadata Created Date November 14, 2017
Metadata Updated Date November 14, 2017
Reference Date(s) January 1, 2007 (publication)
Responsible Party Iowa Department of Natural Resources (Point of Contact)
Contact Email
Access Constraints Use Constraints: The development of the coverages in the NRGIS Library represents a major investment of staff time and effort. As a professional responsibility, the Iowa DNR expects to receive proper credit when these GIS coverages are utilized. he Department also expects that the original documentation will remain with any redistribution of these coverages., Access Constraints: None
Bbox East Long -90.069432
Bbox North Lat 43.557019
Bbox South Lat 40.332776
Bbox West Long -96.684901
Coupled Resource
Frequency Of Update notPlanned
Guid
Harvest Object Id 69983a74-36a4-4bf2-8479-9205d40fc327
Harvest Source Id 39d3fc3b-8b9d-4457-92f5-63ba481044fe
Harvest Source Title FEMA-R07
Licence All data available on this site are currently undergoing quality assurance testing by the U.S. Geological Survey (USGS). While this testing is underway, this data are being provided as-is, with no guarantee of accuracy. If USGS testing indicates data do not meet accuracy specs, those data will immediately be removed from this site. Until USGS certification is received, users should verify data accuracies for themselves.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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