Idaho Code § 43-701C
As soon as possible after the board of directors determines to make flat rate assessments as provided in section 43-701B, Idaho Code, the treasurer of the district shall prepare a list containing the legal description, the assessor's parcel number and the name and last known address of the owner of record of each residential tract, one (1) acre or less in size, assessed by the district for all purposes, and a separate list in like manner for such tracts assessed only for drainage. The list or lists may be certified by the treasurer to the county auditor of the county in which the lands are situate. When an irrigation district includes lands in more than one (1) county, separate lists may be prepared for each county. When a tract lies partly in one (1) county and partly in one or more other counties, only the portion in any county shall be included in the list for that county if the treasurer is certifying a list or lists to the county auditor. If the legal description of any tract or tracts on any such list differs from the legal description as shown by the assessor's records, the auditor shall notify the irrigation district treasurer of the discrepancy and the description in the list shall be changed by the irrigation district treasurer, by an addendum, to conform with the assessor's records; provided, however, that where the discrepancy between the descriptions occurs because a portion of the parcel lies outside the boundaries of the irrigation district, no change in description shall be required, and the irrigation district assessments shall be effective only as to the portions of any such parcel that are within the boundaries of the irrigation district.
Idaho Code § 43-701C