On receipt of a copy of a watershed work plan from the county commissioners, county council, or Mayor and City Council of Baltimore City, a board of viewers: shall engage the services of private engineers; or may use the services of planners and engineers of local, State, and federal units of government; enter and view, with the individuals described in item (1) of this subsection, the land described in the watershed work plan and the proposed watershed project as laid out on the ground; and make careful and thorough examination of the area to determine the benefits and damages that would result from the proposed watershed project to the land in the area affected by the watershed association. A board of viewers shall consider as damages, without regard to any benefit that would result from the proposed watershed project: the value of land taken for construction of the proposed watershed project; inconvenience imposed by the construction of the proposed watershed project; and other lawfully compensable damages.