Groundwater Atrazine Detection Probability in Colorado with Hydrogeomorphic Regions

U.S. Geological Survey research produced this raster dataset predicting the probability of detecting atrazine or its breakdown product in Colorado groundwater. It is one of eight related datasets from a 2003 study, differentiated by incorporating hydrogeomorphic regions but not atrazine use estimates. The maps were developed to support Colorado's State Pesticide Management Plan.

Use Cases

• Modeling pesticide contamination risk in groundwater based on hydrogeomorphic regions.
• Informing state-level pesticide management and regulatory planning for atrazine.
• Analyzing relationships between land cover, geology, and groundwater quality for logistic regression.
• Comparing contamination probability between datasets with and without atrazine use estimates.

Strengths

• Part of a structured study producing eight distinct datasets for comparative analysis.
• Methodology documented in a 35-page U.S. Geological Survey Water-Resources Investigations Report.
• Incorporates multiple data layers including geology, land cover, precipitation, and soils.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file formats are unknown, which may limit suitability assessment.

Provenance

Source

U.S. Geological Survey (USGS) Water-Resources Investigations Report 02-4269, 2003.

Collection Method

Groundwater quality data overlaid with anthropogenic and hydrogeologic data in a GIS, analyzed with logistic regression.

Geography

Colorado, United States.