Acre River Tributary GPS Coordinates for DEM Validation

South America's tri-national Acre River basin provides GPS coordinates for tributary mouths in the MAP frontier region of Peru, Brazil, and Bolivia. The dataset contains averaged readings from three GPS measurements per point, collected during 2003-2004 to assess the reliability of SRTM-derived drainage network data. It is provided by ORNL_CLOUD and consists of a CSV file with coordinates and a companion PDF document.

Use Cases

• Validating the accuracy of SRTM-derived river network data by comparing DEM outputs to ground-truthed GPS coordinates.
• Georeferencing hydrological models for the Acre River basin using precise tributary confluence locations.
• Supporting cross-border water resource management studies in the MAP region with standardized coordinate data.

Strengths

• Coordinates are averaged from three independent GPS readings per tributary mouth, reducing measurement error.
• Covers a significant 300,000 km2 tri-national frontier region, providing a cross-border spatial context.
• Explicitly designed for a concrete methodological purpose: assessing DEM/SRTM drainage network reliability.

Limitations

• Contains only GPS coordinates with no associated hydrological measurements or research documentation.
• Conflicting last updated dates exist between platforms (2004-07-30 and 2026-03 13), creating uncertainty about metadata maintenance.
• The complete column schema is unknown, limiting detailed analysis of the data structure.

Provenance

Source

ORNL_CLOUD

Collection Method

Field GPS readings averaged from three measurements per tributary outlet.

Time Range

2003-2004

Freshness

2026-03-13 01:15:48.781691

Geography

Tri-national River Basin (Acre River) in the MAP region of Madre de Dios, Peru; Acre, Brazil; and Pando, Bolivia.