Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Terrestrial Laser Scanning Data from Malakoff Diggins State Historic Park, Nevada County, California, 2014-17

Metadata Updated: October 28, 2023

High-resolution, terrestrial laser scanning (TLS), was used to quantify the volume of sediment eroded from outcrops at Malakoff Diggins State Historic Park, located about 17 kilometers (km) northeast of Grass Valley, California. TLS was used to create centimeter-scale, three-dimensional (3-D) maps of the complex outcrop surfaces, which could not be mapped non-destructively or in sufficient detail with traditional surveying techniques. To develop a comprehensive sediment budget for the Malakoff Diggins mine pit that will help identify sources of sediment and metals within the pit that comprise the suspended sediment discharged from the pit into Humbug Creek, the USGS used TLS technology to quantify the eroded volumes and erosion rates of sedimentary units exposed in the pit walls. Eroded volumes from nineteen sedimentary units at four study sites located throughout the pit were calculated for the period December 2014 to August 2017. (Note that the monitoring sites were numbered 1, 2, 4, and 5.) Each survey at all four study sites was comprised of multiple lidar scans collected from different vantages that were combined into a composite 3-D point cloud. At all four study sites, the sequential surveys were co-registered or ‘aligned’ into a common and site-specific reference frame so that volumetric comparisons between surveys could be made. At each study site, sedimentary units were differentiated based on grain size, color, compaction, cementation, and slope angle. The various sedimentary units were mapped on the lidar point clouds and individually isolated for volumetric change analysis. The volumetric differences between surveys quantify the erosional and/or depositional volume change of each sedimentary unit.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:5d1cf22de4b0941bde64ce0c
Data Last Modified 20220707
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id e686cb7d-3887-4086-a0f0-95c4f4a44940
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -120.92986,39.36748,-120.90222,39.38055
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 3d0f10f65cf18e53e268a1e813099b9bfd491fdbdf558737daf4289dbb564150
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -120.92986, 39.36748, -120.92986, 39.38055, -120.90222, 39.38055, -120.90222, 39.36748, -120.92986, 39.36748}

Didn't find what you're looking for? Suggest a dataset here.

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?