Geophysical surveys and geospatial data for Bob Kidd Lake, Washington County, Arkansas
type: Dataset
contact point: Organization
  fn: Benjamin V Miller
keyword: frequency-domain-electromagnetism
keyword: usgs-5c87c647e4b09388244cff93
keyword: earthen-structure
keyword: United States
keyword: AmeriGEO
keyword: prairie-grove
keyword: geophysical-survey
keyword: direct-current-resistivity
keyword: arkansas
keyword: electrical-resistivity
keyword: AmeriGEOSS
keyword: National
keyword: electrical-resistivity-tomography
keyword: North America
keyword: bob-kidd-lake
keyword: electromagnetism
keyword: washington-county
keyword: inlandwaters
keyword: gnss-gps-data
keyword: GEO
keyword: CKAN
keyword: GEOSS
keyword: earthen-dam
theme: {geospatial}
description: This data release consists of three different types of data: including direct current (DC) resistivity profiles, frequency domain electromagnetic (FDEM) survey data, and global navigation satellite system (GNSS) coordinate data of the geophysical measurement locations. A data dictionary is included along with the data and defines all of the table headings, definitions, and units. Earthen dams are common on lakes and ponds, but characteristics of these structures such as construction history, composition, and integrity are often unknown for older dams. Geophysical surveying techniques provide a non-invasive method of mapping their lithology and structure. In particular, DC resistivity and FDEM methods can, when properly processed, provide the information necessary to construct a lithologic model of an earthen dam without having to trench or core through the shell of the dam itself. In September, 2016 the U.S. Geological Survey (USGS) conducted geophysical surveys at Bob Kidd Lake, an 81-hectare lake, in northwestern Arkansas to help determine the composition of the earthen dam and guide any potential geotechnical investigations. A series of DC resistivity surveys were conducted along, parallel, and perpendicular to the axis of the crest of the dam to identify the soil-bedrock interface and any variations in the composition of the earthen dam. A dense survey using a multi-frequency electromagnetic sensor was used to map the shallow materials comprising the dam at a higher resolution. Resistivity measurements were made by transmitting a known current through two electrodes (transmitter) and measuring the voltage potential across two other electrodes (receiver). The multiple channels on the resistivity meter allow for voltage measurements to be made at 10 receivers simultaneously following a current injection. The configuration of the transmitter relative to the receiver(s) is referred to as an array. For these surveys, a Reciprocal Schlumberger array was used, which po…
issued: 2025-09-24T07:50:41.408873
modified: 2024-01-23T00:00:00+00:00
spatial: Location

US Migrating
type: Agent

Original Metadata
type: Distribution
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.5c87c647e4b09388244cff93.xml
media type: text/xml
description: The metadata original format
format: XML
issued: 2025-09-15T03:01:29.597949
modified: 2025-09-24T07:50:41.379403

Digital Data
type: Distribution
access URL: https://doi.org/10.5066/P9I4W2P0
media type: application/http
description: Landing page for access to the data
format: XML
issued: 2025-09-17T17:07:50.087138
modified: 2025-09-24T07:50:41.378146