Mississippi River Delta Sonar Bathymetry Survey 2021

Sonar bathymetry data for water channels in the Mississippi River Delta of coastal Louisiana. The dataset was collected during the NASA Delta-X Campaign in 2021, with in-situ surveys conducted in the Atchafalaya and Terrebonne basins. Measurements include depth, date, time, and location, and were used to generate a digital elevation model.

Use Cases

• Interpolating digital elevation models (DEMs) for delta channels using depth, date, and location columns.
• Analyzing channel morphology and cross-sectional profiles from sonar depth measurements.
• Mapping field survey routes for the 2021 Delta-X campaign using the provided KMZ file.
• Studying seasonal or spatial bathymetric variation in the Atchafalaya and Terrebonne basins.

Strengths

• Data collected during a focused NASA field campaign (Delta-X) in 2021, ensuring methodological consistency.
• Specifies sonar equipment used (Lowrance HDS-Live Fish Finder, SonarMite Echo Sounder) for transparency.
• Includes a map of data collection routes in KMZ format for spatial context.
• Cross-platform presence on Data.gov and NASA Earthdata indicates recognized importance.

Limitations

• Exact row count, file size, and complete column list are not provided by any source.
• Sources conflict on the last updated date: Data.gov lists 2026-03-13, while NASA Earthdata lists 2021-09-25.
• License is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

National Aeronautics and Space Administration (NASA), Delta-X Campaign.

Collection Method

In-situ continuous sonar surveys from research boats using specified echo sounders.

Time Range

2021

Freshness

2026-03-13 (from Data.gov, though this may be a metadata update conflict)

Geography

Mississippi River Delta, coastal Louisiana, specifically the Atchafalaya and Terrebonne basins.