The determination of the watershed area must be made using the best available maps or surveys. LiDAR information or a survey conducted under the supervision of a registered land surveyor are preferred. Published seven and one-half minute topographic maps may also be utilized. This information may be supplemented by aerial photographs of the watershed or by an onsite investigation requested by the applicant or board or if the department determines it is necessary.
N.D. Admin Code 89-02-01-06
General Authority: NDCC 61-03-13
Law Implemented: NDCC 61-32-03