7 CFR § 760.638 - Determination of SURE yield.
(b) The adjusted actual production history yield, as defined in § 760.602, will be weighted by the applicable crop year total planted and prevented planted acres, by crop, type, and intended use for each county. RMA data will be used for calculating the SURE yield for insured crops.
(c) The counter-cyclical yield for a crop on a SURE farm will be weighted in such manner as FSA deems fit taking into account a desire for a consistent system and FSA's ability to make timely yield determinations.
(2) The SURE yield will be the higher of the yield calculated using the method in paragraph (d)(1) of this section or 65 percent of the weighted counter-cyclical yield as determined in paragraph (c) of this section.
(e) For those participants with crop insurance but without an adjusted actual production history yield, a SURE yield will be determined by the applicable FSA county committee. This paragraph will apply in the case where the insurance policy does not require an actual production history yield, or where a participant has no production history.