The national pie is not proportional to state pies. When provided, refer to the estimated margins of error to determine suitability of the data for a particular purpose. NRI maps reflect national patterns rather than site-specific information. For example, a valve is used to reduce pressurized water delivered to a farm or field for subsequent distribution by a gravity surface irrigation system. Sub- surface irrigation pipelines or ditches.
Water is supplied to crops by ditches, pipes, or other conduits.
An impoundment made by excavation or earthfill for biological treatment of animal or other agricultural waste. For additional information contact the Resource Assessment Division. Please include the Product ID you are inquiring about. If you use our analysis products, please be aware of our disclaimer .