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Water Quality Program - Nitrate Groundwater Pollution Hazard Index
Find Your Index Number
Purpose: To provide information for farmers to voluntarily target resources for management
practices that will yield the greatest level of reduced nitrogen contamination potential for groundwater
by identifying the fields of highest intrinsic vulnerability.
How it Works: The index works with an overlay of soil, crop, and irrigation information. Based on the three
components, an overall potential hazard number is assigned and management practices are suggested where necessary. If you don't know what soil type you have,
try this online soil survey with detailed soil survey data for much of
California, Arizona, and Nevada.
More Information:
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