SWOT Level 2 River Single-Pass Vector Data Product, Version D
(SWOT_L2_HR_RiverSP_D)| Version | D |
| Processing Level | 2 |
| Start/Stop Date | 2022-Dec-16 to Present |
| Short Name | SWOT_L2_HR_RiverSP_D |
| Description | The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.
Each granule covers a single satellite pass over one or more continents and includes two ESRI shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data. The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards. This dataset is the parent collection to the following sub-collections: https://podaac.jpl.nasa.gov/dataset/SWOT_L2_HR_RiverSP_node_D https://podaac.jpl.nasa.gov/dataset/SWOT_L2_HR_RiverSP_reach_D |
| DOI | 10.5067/SWOT-RIVERSP-D |
| Measurement | TERRESTRIAL HYDROSPHERE > SURFACE WATER > STAGE HEIGHT TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS |
| Swath Width | 120 km |
| Platform/Sensor | SWOT / Platform Name: Surface Water Ocean Topography (SWOT) KaRIn SENSOR Name: Ka-band Radar Interferometer (KaRIn) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) Jason-class Altimeter SENSOR Name: Jason-class Altimeter (Jason-class Altimeter) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) AMR SENSOR Name: Advanced Microwave Radiometer (AMR) Swath Width: 18.7 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to sigma0 Swath Width: 23.8 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to water vapor Swath Width: 34.0 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to cloud liquid water. SWOT / Platform Name: Surface Water Ocean Topography (SWOT) DORIS SENSOR Name: Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) GPSP SENSOR Name: Global Positioning System Payload (GPSP) Show More |
| Project | Surface Water Ocean Topography (SWOT) |
| Data Provider | Publisher: JPL NASA Creator: Surface Water Ocean Topography (SWOT) Release Place: Jet Propulsion Laboratory Release Date: 2025-May-13 Resource: https://swot.jpl.nasa.gov/ |
| Format | Shapefile |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Coverage Region: GLOBAL North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2022-Dec-16 to PresentSwath Width: 120 km |
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| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-swot-ops-cumulus-protected/SWOT_L2_HR_RiverSP_D/ | |
| podaac-swot-ops-cumulus-public/SWOT_L2_HR_RiverSP_D/ | |
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| GENERAL DOCUMENTATION | |
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| DATA CITATION GUIDELINES | |
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| ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | Surface Water Ocean Topography (SWOT). 2025. SWOT Level 2 River Single-Pass Vector Data Product, Version D. Ver. D. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/SWOT-RIVERSP-D
For more information see Data Citations and Acknowledgments.
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| Journal Reference | JPL Internal Document. 2018. Surface Water and Ocean Topography Mission (SWOT) Project: Science Requirements Document, JPL D-61923, Rev. B, Jet Propulsion Laboratory. |
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