Layer: 2023-325-FA DRP1HJAVAR LTC (ID:128)

View In: Map Viewer

Name: 2023-325-FA DRP1HJAVAR LTC

Display Field: fan

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted single-beam and multibeam bathymetry (Stalk and others, 2025) surveys around the northern Chandeleur Islands, Louisiana, from June 12 to 20 and from July 31 to August 9, 2023, as part of Field Activity Number (FAN) 2023-325-FA. The purpose of data collection was to measure submerged coastal elevations along the Chandeleur Islands, located in the Breton National Wildlife Refuge. Funded by the Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) enacted on September 30, 2021, these data, in combination with previous bathymetric data collected at the study area (Stalk and others, 2017; Stalk and others, 2020), can be used to quantify storm-related barrier island sediment redistribution following the 2020-2021 hurricane seasons. The survey encompassed approximately 760 square kilometers (km) of the gulf-side and sound-side nearshore environments around the northern Chandeleur Islands. The single-beam bathymetry was acquired using two 12-foot (ft) personal watercrafts and two boats (a 20-ft Twin Vee [TVEE] and a 17-ft Mako). All vessels were outfitted with high precision Global Navigation Satellite System receivers, motion reference units, and survey grade single-beam echosounders (SBES). Long Term Change (LTC) lines were collected by the TVEE as part of a comparative long term change analysis, but for this data release, LTC lines represent shore-perpendicular transects extending both offshore and soundward 3 km on either side of the island. Sub-bottom profile geophysical data were also collected during this FAN and are provided in Forde and others (2024).

Copyright Text: Funding and (or) support for this study were provided as part of the Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43), enacted on 30 September 2021.

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

{"renderer":{"type":"simple","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[71,255,10,153],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[71,255,10,255],"width":1}}},"scaleSymbols":true,"transparency":0,"labelingInfo":null}
HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field:

Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
fan (type: esriFieldTypeString, alias: fan, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
fan_url (type: esriFieldTypeString, alias: fan_url, SQL Type: sqlTypeOther, length: 250, nullable: true, editable: true)
pub (type: esriFieldTypeString, alias: pub, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
pub_url (type: esriFieldTypeString, alias: pub_url, SQL Type: sqlTypeOther, length: 250, nullable: true, editable: true)
geotiff (type: esriFieldTypeString, alias: geotiff, SQL Type: sqlTypeOther, length: 250, nullable: true, editable: true)
resolution (type: esriFieldTypeString, alias: resolution, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
type (type: esriFieldTypeString, alias: type, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
yr_collect (type: esriFieldTypeString, alias: yr_collect, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/26/2025 5:31:36 PM

Schema Last Edit Date: 8/26/2025 5:31:36 PM

Data Last Edit Date: 8/26/2025 5:31:36 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat