Download and Access Products:

Point Cloud (1050 nm)   Bulk Download     opentopoID: OTLAS.102016.26914.1

Point Cloud (532 nm)   Bulk Download     opentopoID: OTLAS.102016.26914.1b

Raster Data   Bulk Download     opentopoID: OTSDEM.102016.26914.1

Collection Overview: This dataset was collected as an NCALM Seed grant for PI Jason Alexander, University of Wyoming, for the purpose of quantifying the relationship between channel morphology and the topography of large emergent sandbars.

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).

Publications associated with this dataset can be found at NCALM's Data Tracking Center

Dataset Acknowledgement: 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.

Dataset Citation: Niobrara River, Nebraska. Distributed by OpenTopography. https://doi.org/10.5069/G9NP22DP . Accessed: 2024-04-25

Use License: CC BY 4.0

Dataset Keywords: lidar

Survey Date: 07/11/2015

Publication Date: 10/31/2016

Data Provider and Roles:
Funder

• National Science Foundation

Collector

• National Center for Airborne Laser Mapping

Total number of points: 295,745,974 pts

Area: 61 km²

Point Density: 4.85 pts/m²

Classifications:

Class 1 - Unclassified	96,280,649
Class 2 - Ground	87,345,327
Class 4 - Medium Vegetation	76,007,992
Class 9 - Water	36,109,645
Class 10 - Rail	2,361

Raster Resolution: 1 meter

Coordinate System:
    Horizontal: NAD83 (2011) / UTM Zone 14N Meters [EPSG: 26914]
    Vertical: NAVD88 (GEOID 09) [EPSG: 5703]

Units: meter

Survey Report: Reports

LAS Validation Data Report: NE15_Alexander.html

Tile index in shapefile format: Download

Dataset Extent in KMZ format: Download

Dataset Spatial Bounds: North: 42.8405077634647°     South: 42.6968030743806°     East: -99.1809917127469°     West: -99.5607312877417°