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converted to a non-agricultural use. 009 <br /> (3) A lawn within the riparian buffer ceases to be <br /> maintained. <br /> B. Zones within the Riparian Buffer <br /> The protected riparian buffer shall have two zones as follows: <br /> 1. Zone I shall consist of a vegetated area that is undisturbed except for <br /> uses provided for in the Table of Uses, Section 4. The location of Zone I <br /> shall be as follows: <br /> a) For intermittent and perennial streams,Zone I shall begin at <br /> the most landward limit of the top of the bank or rooted herbaceous <br /> vegetation,and extend outward a minimum distance of 30 feet on <br /> all sides of the surface water,'measured horizontally on a line <br /> perpendicular to the surface water. <br /> b) For ponds, lakes, and reservoirs located within a natural <br /> drainage way,Zone I shall begin at the most landward limit of the <br /> normal water level or the rooted herbaceous vegetation and extend <br /> landward a minimum distance of 30 feet,measured horizontally on <br /> a line perpendicular to the surface water. <br /> c) Zone 2 shall consist of a stable,vegetated area that is <br /> undisturbed except for activities and uses provided for in the Table <br /> of Uses, Section 4. Grading and revegetation is allowed provided <br /> that the health of the vegetation in Zone I is not compromise. Zone <br /> 2 shall begin at the outer edge of Zone I and extend landward a <br /> minimum of 20 feet as measured horizontally on a line <br /> perpendicular to the surface water. The minimum combined width <br /> of Zone I and Zone 2 shall be 50 feet on all sides of the surface <br /> water. <br /> C. Diffuse Flow Requirement <br /> Diffuse flow of runoff shall be maintained in the riparian buffer by dispersing <br /> concentrated flow and reestablishing vegetation. <br /> 1. Concentrated runoff from new ditches or constructed conveyances <br /> shall be converted to diffuse flow before the runoff enters the riparian <br /> buffer. <br /> 2. Periodic corrective action to restore diffuse flow shall be taken if <br /> necessary to impede the formation of erosion gullies. <br /> Section 4 Table of Uses <br /> The following chart sets out the uses and their designation under this Ordinance as <br /> exempt, allowable, allowable with mitigation, or prohibited. The requirements for each <br /> category are given in Section 4.A. <br /> 3 <br />