1. All proposed development requiring stormwater conveyance must provide sufficient capacity to convey stormwater without flooding or otherwise damaging existing or proposed structures in a manner consistent with the city’s engineering standards.

2. Estimation of peak stormwater runoff rates used in the design of stormwater conveyance facilities must use the rational method for estimating a hydrograph using a mathematical simulation.

3. Runoff may not discharge directly onto the surface of a public street or road.

4. Runoff and infiltration must be directed away from septic drain fields.

5. Runoff from impervious surfaces, roof drains, and yard drains must be directed so as not to adversely affect adjacent properties.

6. Runoff from development may not cause a significant adverse impact to down-gradient properties.

1. All proposed development must provide easements for all stormwater conveyance systems that are not located in public rights-of-way or tracts and must be granted to the parties responsible for providing ongoing maintenance of the systems. Drainage easements through non-drainage structures are prohibited.

2. Wording to this effect must appear on the face of all final plats, and must be contained in any covenants required for a development. (Ord. 2991 § 1 (Att. A), 2016)