The Science Behind the Registry
The Fallowed Land Registry integrates high-resolution datasets from local, state, and federal agencies to provide a comprehensive, science-based view of basin health and water usage.
Core Data Providers
These organizations provide the foundational datasets used for enrollment verification and basin-scale analysis.
Land IQ
Specialized crop mapping and climatologic data. Provides field boundaries and crop classifications in partnership with the California DWR. Land IQ also provides precipitation data and net ET.
- Crop Classification
- Field Boundary Mapping
- Precipitation Data
- Net ET Estimates
OpenET
Satellite-based evapotranspiration (ET) estimates at field scale. Developed by NASA, DRI, and EDF, providing transparent, science-based water usage data.
- Field-scale ET Estimates
- NASA-backed Methodology
- Model Ensemble Approach
County of SLO
Local jurisdictional and parcel data. Manages the administrative boundaries, Williamson Act status, and monitoring well networks.
- Parcel & Ownership Data
- Monitoring Well Data
Integrated Public Sources
The registry integrates widely used public datasets to support mapping, eligibility context, and basin insights.
California DWR
Bulletin 118 basin boundary and related groundwater boundaries.
USGS
Stream gage locations and real-time or historical flow data.
USDA
Soils mapping and 12-digit HUC watershed boundaries.
ESRI
Base map imagery, streams, roads, and railroads.
Climatologic stations and monitoring well data may combine Land IQ, DWR, and County sources. Layer availability and attribution are visible in the platform map.
Data Currency & Reliability
Our systems are designed for high-frequency updates to ensure the most accurate representation of basin conditions.
Daily or more
Climatologic stations, stream gages, and instrumented monitoring wells.
Monthly
Precipitation, ET (total and net), and consumptive use datasets.
Annual
Crop mapping and other layers on a yearly cycle based on dataset.
As Needed
Farming unit and parcel boundaries, ownership, and administrative layers.
Ready to explore the data?
Access the interactive map to view basin conditions, groundwater levels, and other insights derived from these trusted sources.