IML Critical Zone Observatory, Clear Creek Aug 2014 Lidar Survey
OT Collection ID
OT Collection Name
: IML Critical Zone Observatory, Clear Creek Aug 2014 Lidar Survey
: Airborne Lidar
This dataset was collected by NCALM for PI Dr. Praveen Kumar, University of Illinois. Clear Creek is part of the Intensively Managed Landscapes (ILM) Critical Zone Observatory (CZO).
The requested survey area consisted of two rectangles - called East and West - enclosing approximately 204 square kilometers along with their associated watercourse corridors. The West rectangle is located 35 km NW of Iowa City, Iowa and the East rectangle is located 10 km NW of the same city.
This survey was performed with 2 different LiDAR systems: 1) Optech Gemini Airborne Laser
Terrain Mapper (ALTM) which is an infrared laser mapping sensor and 2)
Optech Aquarius ALTM which is a hybrid laser mapping system as it
collects simultaneous land and shallow water-depth measurements. It operates in the green
spectrum, thus enabling it to penetrate water. These LiDAR mapping systems along with an
Optech 12-bit full waveform digitizer were mounted consecutively in a twin-engine Piper PA-
31-350 Navajo Chieftain (Tail Number N154WW).
Full waveform files are available via this link
LiDAR data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM
). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051.
: czo, intensely managed landscapes, critical zone observatory, clear creek, river, watershed
Data Provider and Roles
Total lidar returns
: 178,274,179 pts
: 95.09 km2
: 1.87 pts/m2
: 1 meter
Horizontal: NAD 1983 (2011) UTM Zone 15N [EPSG: 26915]
Vertical: NAVD88 (GEOID 12a
LAS Validation Data Report
Dataset Extent in KMZ format
Dataset Spatial Bounds
: North: 41.7666° South: 41.6518° East: -91.5464° West: -92.0235°