This data release consists of three child items distinguishing the following types of data: light detection and ranging (lidar) point clouds (LPCs), digital elevation models (DEMs), and snow depth raster maps. These three data types are all derived from lidar data collected on small, uncrewed aircraft systems (sUAS) at study areas in the Upper Colorado River Basin, Colorado, from 2020 to 2022. These data were collected and generated as part of the U.S. Geological Survey's (USGS) Next Generation Water Observing Systems (NGWOS) Upper Colorado River Basin project.

The U.S. Geological Survey contracted with Juniper Unmanned to conduct field tests of the ASTRALiTe bathymetric lidar system upstream and downstream of its confluence with the Blue River near Kremmling, Colorado, on October 18, 2018. The objective of this project was to assess the potential to map river bathymetry (i.e., channel bed topography) using lidar data collected from an unmanned aircraft system (UAS). The ASTRALiTe lidar instrument was mounted on a DJI Matrice 600 Pro UAS owned and operated by Juniper Unmanned. As part of the study, Juniper's pilot flew the ASTRALiTe instrument across 2 river transects (cross-stream) on the Blue River and 2 river transects on the Colorado River. This data release includes data delivered to the USGS by ASTRALite on November 15, 2018. The data have been parsed into separate text files for bare earth (i.e., river bed) and water surface returns for each cross-section but have not been filtered or modified in any other way.

The U.S. Geological Survey contracted with LiteWave Technologies (formerly ASTRALiTe) to fly their production topo-bathymetric lidar system (Edge) along the Colorado River near McCoy, Colorado, on September 8-9, 2021. The objective of this project was to assess the potential to map river bathymetry (i.e., river-bed topography) using lidar data collected from an uncrewed aircraft system (UAS). The Edge was mounted on a UAS owned and operated by LiteWave Technologies. This data release includes data delivered to the USGS by LiteWave Technologies on November 9, 2021. Grid coordinates are projected in Universal Transverse Mercator Zone 13 North and are represented in units of meters. The topo-bathymetric elevations, in units of meters, delivered by the contractor are believed to be relative to the height of the GRS80 ellipsoid and differ from the more commonly used orthometric height computed by the addition of the geoid height to the GRS80 ellipsoid. The data is provided as a LAS file which includes points classified as bathymetric or river bottom (code 40), created, never classified (code 0), and water surface returns (code 41). These data delivered to USGS have not been filtered or modified.

LiDAR data provided through the State of Colorado Office of Information Technology.

Español: Modelo Digital de Superficies (MDS) del Monumento Natural Barro Colorado, derivado de los datos de elevación provistos por la compañia Blom. Blom realizó 11 sobrevuelos del 15/08/2009 hasta el 10/09/2009, tomando alrededor de 4,837 fotografías, con un tamaño de pixel de 0.066m, cubriendo aproximadamente 6,552ha. Este MDS tiene un tamaño de pixel de 1m x 1m. Por favor, reconocer la fuente de información como STRI and NSF DEB0939907, J. Dalling, S. Hubbell y S. Dewalt que financiaron la adquisión de los datos LiDAR. El documento que contiene la información técnica sobre el sobrevuelo realizado por Bloom, se puede descargar en Documento Técnico del sobrevuelo LiDAR English: Barro Colorado Natural Monument Digital Surface Model derived from the Lidar elevation data provided by the company Blom. Blom made 11 overflights from 08/15/2009 to 09/10/2009, taking 4,837 images, with a pixel size of 0.066m, covering about 6,552Ha. This DSM has a pixel size of 1m x 1m. Please acknowledge STRI and NSF DEB0939907, J. Dalling, S. Hubbell and S. Dewalt which funded acquisition of the LiDAR data. The technical documentation about the flights made by Bloom, may be download from LiDAR Overflight Technical Details.DTM vs DSMDSM = (earth) surface including objects on it DTM = (earth) surface without any objects

This dataset includes measurements obtained using the University of Colorado Windcube v1 lidars during the 2018 LAPSE-RATE (Lower Atmospheric Profiling Studies at Elevation - a Remotely-piloted Aircraft Team Experiment) field campaign. This campaign took place in the San Luis Valley of Colorado between 14-21 July, 2018.

On 14 July, both lidars were co-located at the Saguache site for intercomparison. WC49 (here named DPLR2) was moved to the Moffat School site late in the day on the 14th. Moffat School data starts on the 15th.

Bad or missing data is set to -9999.0 for all fields.

The a1 and the a2 datafiles are identical except that the a2 files include beam information (0, 90, 180, or 270) that was omitted from the a1 files.

This lidar dataset was collected as part of an NCALM Seed grant for Christian Roumelis at the Ohio State University. This dataset was collected to help understand the interactions between log jams, stream morphology, and groundwater in a partially burned mountain watershed. Data was collected over the Fort Collins/Loveland, Colorado area.

Data are available for download at: https://smithsonian.dataone.org/datasets/ALS_Panama_2023/ Small-footprint airborne lidar, or Airborne Laser Scanning (ALS), data provides detailed information about forest vertical structure as well as ground topography. Such data are used extensively for estimating canopy height, forest above ground biomass density, leaf area indices and more, and for calibrating and validating satellite remote sensing products. The 2023 data collection campaign covered 3825.24 ha across 11 areas. It included both high-lidar data (20.31 shots per square meter) and RGB orthophotos (6 cm resolution). LiDAR data were collected with an IGI LiteMapper 6800i, which incorporates a Riegl LMS680 full waveform sensor. RGB imagery was collected with a Nikon D800E SLR camera. The covered area included all 1542 ha of Barro Colorado Island, all 700 ha of the Panama Canal Watershed Project at Agua Salud, parts of the Gigante peninsula of the Barro Colorado Nature Monument including a long-term factorial nutrient addition experiment as well as experimental liana removal plots, the San Lorenzo canopy crane site and San Lorenzo ForestGEO plot (formerly the Sherman plot), the Parque Metropolitano canopy crane site, the Limbo bird plot on Pipeline Road (Camino Oleoducto) in Parque Nacional Soberania, and other areas in and around annually measured Smithsonian ForestGEO 1-ha plots (Panama Small Plots) of P05, P06, P07, P09, P12, P14, P15, P16, elcharco,fincaroubik,metrop, panamapacifico, soberania, San Lorenzo, Santa Rita, Parque Natural Metropolitano, and Parque Nacional Soberanía.Within all sites there are established plots for the observation of forest diversity, secondary forest regrowth, lianas and more. The data collection campaign was contracted to the company STEREOCARTO which specializes in geographic engineering, GIS, geodesy, and topography. All areas were sampled during May 26 and 27 of 2023 using a helicopter Bell 206 JR III. The dataset contains a wide range of data products such as digital elevation models, digital surface models, canopy height models, orthomosaics,RGB images, classified point clouds and raw LiDAR data.

This teaching data subset contains data focused on the flooding events in 2013 in Boulder, Colorado. The subset includes publicly available data from a sources including NEON, USGS, & NOAA. See the README files in individual directories to see the provenience of each data subset. The Teaching Module & Data Activities associate with this data set can be found on the NEON Data Skills Portal.

Airborne LiDAR data were acquired over the study area on August 10th, 2015, using a Riegl Q1560 dual-channel LiDAR system mounted on a Piper Navajo. The survey was performed by Quantum Spatial in collaboration with Eagle Mapping Ltd. The data complies with the USGS QL1 standard [Heideman, 2014] with the point density more than 8 pulse per m2.

NCALM Seed. PI: Robert Anderson, University of Colorado at Boulder. The survey area is a rectangular polygon about 48 square kilometers located 14 km west of Boulder, Colorado at the Niwot Ridge Long-Term Ecological Research Site. This area was flown and completed on September 29, 2005. Publications associated with this dataset can be found at NCALM's Data Tracking Center

The U.S. Geological Survey contracted with Juniper Unmanned to conduct field tests of the ASTRALiTe bathymetric lidar system on the Blue River just upstream of its confluence with the Colorado River near Kremmling, Colorado, on October 18, 2018. The objective of this project was to assess the potential to map river bathymetry (i.e., channel bed topography) using lidar data collected from an unmanned aircraft system (UAS). The ASTRALiTe lidar instrument was mounted on a DJI Matrice 600 Pro UAS owned and operated by Juniper Unmanned. As part of the study, Juniper's pilot flew the ASTRALiTe instrument across 2 river transects (cross-stream) on the Blue River. This data release includes data delivered to the USGS by ASTRALite on November 15, 2018. The data have been parsed into separate text files for bare earth (i.e., river bed) and water surface returns for each cross-section but have not been filtered or modified in any other way.

PI: Dr. Craig Glennie, University of Houston. NSF Project. The survey area is located over the confluence of Blue and Colorado rivers south of Kremmling, Colorado. Data were collected to test the Aquarius bathymetry laser since the confluence creates a variety of conditions with clear and muddy waters mixing from the two rivers. The Aquarius was tested for bathymetric performance with respect to water turbidity within the rivers. The data on OpenTopography are from the Gemini instrument. Bathymetric point cloud data (LAZ) from the Optech Aquarius sensor are available via the "bulk download" link below. Publications associated with this dataset can be found at NCALM's Data Tracking Center

NCALM Project. PI: Greg Tucker, University of Colorado, Boulder. The survey area totals 62 square kilometers and consists of one irregular polygon located ~45 km southwest of Denver, Colorado, and ~30 km west of Castle Rock, Colorado. The survey took place on May 7, 2010. Publications associated with this dataset can be found at NCALM's Data Tracking Center

Español: Modelo Digital del Terreno (MDT) del Monumento Natural Barro Colorado, derivado de los datos de elevación provistos por la compañia Blom. Blom realizó 11 sobrevuelos del 15/08/2009 hasta el 10/09/2009, tomando alrededor de 4,837 fotografías, con un tamaño de pixel de 0.066m, cubriendo aproximadamente 6,552ha. Este MDT tiene un tamaño de pixel de 1m x 1m. Por favor, reconocer la fuente de información como STRI and NSF DEB0939907, J. Dalling, S. Hubbell y S. Dewalt que financiaron la adquisión de los datos LiDAR. El documento que contiene la información técnica sobre el sobrevuelo realizado por Bloom, se puede descargar en Documento Técnico del sobrevuelo LiDAR. Para descargar el archivo TIF original, utilice el DOI siguiente https://doi.org/10.25573/data.25843519.v1 English: Barro Colorado Natural Monument Digital Elevation Model derived from the Lidar elevation data provided by the company Blom. Blom made 11 overflights from 08/15/2009 to 09/10/2009, taking 4,837 images, with a pixel size of 0.066m, covering about 6,552Ha. This DTM has a pixel size of 1m x 1m. Please acknowledge STRI and NSF DEB0939907, J. Dalling, S. Hubbell and S. Dewalt which funded acquisition of the LiDAR data. The technical documentation about the flights made by Bloom, may be download from LiDAR Overflight Technical Details. To download the original TIF file, please use the following DOI: https://doi.org/10.25573/data.25843519.v1DTM vs DSMDSM = (earth) surface including objects on it DTM = (earth) surface without any objects

These light detection and ranging (lidar) point clouds (LPCs) were generated from lidar data collected during multiple field campaigns in three study areas near Winter Park, Colorado. Small, uncrewed aircraft systems (sUAS) collected lidar datasets to represent snow-covered and snow-free periods. More information regarding the sUAS used and data collection methods can be found in the Supplemental Information and process step sections of each study area metadata file.

These digital elevation models (DEMs) were generated from light detection and ranging (lidar) point clouds (LPCs) derived from lidar data collected during multiple field campaigns at three study areas near Winter Park, Colorado. Small, uncrewed aircraft systems (sUAS) were used to collect lidar datasets to represent snow-covered and snow-free periods.

2010 Boulder Creek, Colorado Snow-Off LiDAR Surveys LiDAR was acquired for a 600 km2 area inside the Boulder Creek watershed during a snow-off (August, 2010) time slice, near Boulder Colorado. This data was collected in collaboration between the National Center for Airborne Laser Mapping (NCALM) project and the Boulder Creek Critical Zone Observatory (CZO), both funded by the National Science Foundation (NSF). The dataset contains 1 m Digital Surface Models (first-stop), Digital Terrain Models (bare-earth), and 10 points/m2 LAS-formated point cloud tiles. The DSMs and DTMs are available in GeoTIFF format, approx. 1-2 GB each, with associated shaded relief models, for a total of 15 GB of data. The Digital Terrain Model (DTM) is a ground-surface elevation dataset better suited for derived layers such as slope angle, aspect, and contours. Accessory layers consist of index map layers for point cloud tiles, DEM extent, and flight lines. Other LiDAR DSMs, DTMs, and point cloud data available in this series include snow-on data for 2010. Together, the LiDAR Digital Elevation Models (DEM) and point cloud data will be of interest to land managers, scientists, and others for study of topography, snow, ecosystems and environmental change. The Boulder Creek CZO will be using the LiDAR data to further their mission of focusing on how water, atmosphere, ecosystems, & soils interact and shape the Earth's surface. The "Critical Zone" lies between rock and sky. It is essential to life - including human food production - and helps drive Earth's carbon cycle, climate change, stream runoff, and water quality. PLEASE READ the FGDC-compliant metadata files that are available for each dataset (in .html, .txt, and .xml formats). These files provide numerous details that may be of interest. Also included are flight lines, survey reports, reference materials, and DEM extent shapefiles. Publications associated with this dataset can be found at NCALM's Data Tracking Center

Barro Colorado Natural Monument Digital Elevation Model derived from the Lidar elevation data provided by the company Blom. Blom made 11 overflights from 08/15/2009 to 09/10/2009, taking 4,837 images, with a pixel size of 0.066m, covering about 6,552Ha. This DEM has a pixel size of 1m x 1m. Please acknowledge STRI and NSF DEB0939907, J. Dalling, S. Hubbell and S. Dewalt which funded acquisition of the LiDAR data.

This dataset contains lidar digital elevation models (DEMs). The lidar data were collected before (2016) and after (2021) the Grizzly Creek Fire, which occurred in 2020. The 2016 lidar was collected during a series of flights between 10 June and 7 October 2016. The 2021 lidar flight was conducted in full on 24 August 2021. The files are named with the following convention: Vendor_Year_Resolution_merged_Watershed. The vendor is either Merrick (2016 data) or Sanborn (2021), the year is either 2016 or 2021, the resolution is 1 meter in both cases, and the watershed is labeled as HUC1, HUC2, HUC3_N_side, or HUC3_S_side. Additionally, the files from the individual vendors were uploaded to two separate compressed folders: Merrick_2016_1m_merged_HUCx.zip and Sanborn_2021_1m_merged_HUCx.zip.