Group Risk Plan (GRP) is designed as a risk management tool to insure against widespread loss of production of the insured crop in a county. GRP policies use a county yield index as the basis for determining a loss. When the estimated county yield for the insured crop, as determined by National Agricultural Statistics Service (NASS), falls below the trigger yield level chosen by the producer, an indemnity is paid. Payments are not based on an individual producer's crop yields. Coverage levels are available for up to 90 percent of the expected county yield. GRP involves less paperwork and costs less than plans of insurance against individual loss, as described above. Under GRP, insured acreage for an individual producer's crop may have low yields and not receive a payment if the county does not suffer a similar level of yield loss. This insurance is primarily intended for producers whose crop yields typically follow the average county yield.