The following eight zones are designated by the City:
Zone
Designation
Suburban Residential
SR
Urban Residential
UR
Town Center
TC
Neighborhood Center
NC
Community Commercial
CC
Rural
R
Public Facility
PF
Suburban
S
Industrial
I
Industrial Commercial
IC
Natural Resource
NR
Suburban Medium
SM
(Ord. 252 § 3.01, 2004; Amended during 2010 codification)
The designation, location and boundaries of the aforesaid zones shall be delineated on the zoning map of the City. Said map and all notations, references, data and other information shown thereon shall be a part of these regulations and subject thereto, and such map shall constitute RDMC § 17.15.030.
(Ord. 252 § 3.03, 2004)
This section consists of the zoning map of the City, which map may be amended in whole or in part in accordance with the amendment procedure set forth in Chapter 17.30 RDMC.
(Ord. 252 § 3.04, 2004)
Where uncertainty exists with respect to the boundaries of the various zones, the following rules shall apply:
(1) 
Streets or Alleys. Where the indicated zoning boundaries are approximately street or alley lines, the center lines of such streets or alleys shall be construed to be such boundaries.
(2) 
Lot Lines. Where the zoning boundaries are not shown to be streets or alleys, and where the indicated boundaries are approximately lot lines, said lot lines shall be construed to be the boundaries of said zone, unless said boundaries are otherwise indicated.
(3) 
Scale on Map – Determination by Commission. Where property is indicated on a zoning map as acreage and not subdivided into lots and blocks, or where the zone boundary lines are not approximately street, alley, or lot lines, the zone boundary lines on said zoning map shall be determined by scale contained on such map and where uncertainty exists, the zone boundary line shall be determined by the Planning Commission.
(Ord. 252 § 3.05, 2004)
All incorporated lands within the City of Rio Dell sphere of influence shall be classified as specified by the zoning map adopted as a part of these regulations. Property hereafter annexed to the City of Rio Dell shall be prezoned in accordance with the provisions of Section 65859 of the California Government Code.
(Ord. 252 § 3.06, 2004)
Except as otherwise provided herein:
(1) 
Use Requirements. No building or part thereof or other structure shall be erected, altered, added to or enlarged, nor shall any land, building, structure or premises be used, designated or intended to be used for any purpose or in any manner other than is included among the uses hereinafter listed as permitted in the zone in which such building, land or premises is located.
(2) 
Height Requirements. No building or part thereof or structure shall be erected, reconstructed or structurally altered to exceed in height the limit hereinafter designated for the zone in which such building is located except as provided in Chapter 17.25 RDMC.
(3) 
Area Requirements. No building or part thereof or structure shall be erected nor shall any existing building be altered, enlarged or rebuilt or moved into any zone, nor shall any open space be encroached upon or reduced in any manner, except in conformity to the yard, building site area, and building location regulations hereinafter designated for the zone in which such building or open space is located.
(4) 
Duplicate Use of Open Space in Yards. No yard or other spaces provided about any buildings for the purpose of complying with provisions of these regulations shall be considered as providing a yard or open space for a building or any other building site unless specifically permitted elsewhere in these regulations.
(Ord. 252 § 3.07, 2004)