LGRIP30: Global Irrigated Cropland Map at 30 Meters

32 irrigated cropland types are classified at a 30-meter resolution using Landsat 8 time-series data from 2019-2021 to create a nominal 2020 product. This dataset maps irrigated areas, rainfed cropland, and water bodies over 10° by 10° tiles and includes an accuracy assessment layer. As of the latest metadata, coverage is limited to the conterminous United States, with global data planned for a later release.

Use Cases

• Assessing water use efficiency based on the 32 irrigated cropland type classifications.
• Monitoring changes in agricultural land use over time using the 2019-2021 satellite time series.
• Modeling regional food security by analyzing the spatial distribution of irrigated versus rainfed cropland.
• Validating other land cover products using the included accuracy assessment layer.

Strengths

• High spatial resolution of 30 meters enables detailed field-level analysis.
• Classifies land into 32 specific irrigated cropland types, providing granular detail.
• Based on Landsat 8 time-series data from 2019-2021, offering temporal consistency.
• Product is Version 2, described as a significant improvement over the previous version aiming to reduce errors.

Limitations

• Current geographic coverage is limited to the conterminous United States, conflicting with the 'Global' title.
• Metadata on data.gov lists a last update of 2026-04-10, while nasa_earthdata shows 2021-12-31, creating uncertainty about freshness.
• Specific column names and dataset size are not provided in the available metadata.

Provenance

Source

LPCLOUD, as an extension of the USGS Global Food Security-support Analysis Data (GFSAD) project.

Collection Method

Produced using Landsat 8 Operational Land Imager (OLI) time-series satellite sensor data.

Time Range

2019 through 2021 (nominal year 2020).

Freshness

2026-04-10 01:51:00.647363 (most recent update across platforms, though conflicting with older date).

Geography

Conterminous United States (as of current release); global coverage planned.