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Survey monument positions for the Cleveland Corral landslide near U.S. Highway 50, El Dorado County, California

Metadata Updated: July 6, 2024

Data in this document record the ground-surface positions from 1996 to 2018 of monuments located on different kinematic elements of the Cleveland Corral landslide, or on nearby more stable ground. Data were collected about once a year in campaign mode, at times when the landslide was dormant and not moving (typically late spring or fall). Survey timing was selected to identify wet-season movement of the slide, which typically occurs during the winter and spring. Between 1996 and 2000, positional information was collected by surveying pins (with rod and prism) from a total station instrument located across the valley from the landslide. Between June 2000 and March 2004, no surveys were performed. Starting in 2004, positional information for monuments was determined using static differential Global Positioning System (GPS) surveying techniques with a nearby reference site located on stable ground. Details of the GPS surveying and processing techniques are further described in the Data_Quality_Information section of the FGDC Metadata. One file is provided for each of the two periods of measurement. Initial monuments were pins (large nails) and rebar for aerial photo targets located on and off the active slide. These were replaced or supplemented by rebar in 1999 and 2000. When GPS surveying began, new rebar with aluminum-cap monuments were driven into the ground. The number of monuments evolved over the years as some were destroyed or buried by landslide activity and others added.
This data release includes four files: 1) geographic positions of survey pins/rebar, 1996 - 2000, 2) geographic positions of GPS monuments starting in 2004, 3) image showing the locations of the pins and monuments, and 4) the 2004 OPUS solution used to obtain the GPS base-station position.

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 July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:5c5a34fae4b070828900f073
Data Last Modified 20200821
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id d9a5efdb-e87f-4491-bff1-f05c779a758c
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -120.422,38.776,-120.418,38.7806
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash f54185bfdeffdc76280702eb598e36bde1a861f91b841a81ba3b6afab650aae6
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -120.422, 38.776, -120.422, 38.7806, -120.418, 38.7806, -120.418, 38.776, -120.422, 38.776}

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