Sacramento County Zoning Code § 905-01 Establishment

A Floodplain Management Permit shall be obtained before any new construction, substantial improvements, or other development, including alteration of land, begins within any special flood hazard area or local flood hazard area established in Section 903-02. Permits for work in the floodplain requiring approval by the Floodplain Administrator are either in the form of a permit or formal improvement plan. The application for a Floodplain Management Permit shall be filed on a form and submitted with such information as is prescribed by the Floodplain Administrator including, but not limited to the following:

A. Plans in duplicate drawn to scale showing the nature, location, dimensions, and elevation of the property, existing or proposed structures, fill, storage of materials, and drainage facilities;
B. Proposed elevation in relation to the currently adopted Vertical Datum of the lowest floor of all buildings- in Zone AO, the elevation of the highest adjacent preconstruction natural grade, and the proposed elevation of the lowest floor of all buildings;
C. Proposed elevation in relation to the currently adopted Vertical Datum to which any structure will be flood-proofed if required in Chapter 6;
D. All appropriate certifications listed in Section 904-02(D);
E. Location and elevation of the base flood and the floodway, both before and after proposed development;
F. Location, volume, and depth of proposed fill and excavation within the 100-year floodplain and the floodway; and
G. Description of the extent to which any watercourse will be altered or relocated as a result of proposed development.