Earlier editions: 2026-09
Marin County Municipal Code Ch. 9.03 Visitor Conduct
Marin County Municipal Code · 2026-10 edition · updated 2026-10-04 · Marin County
Cite as: Marin County Municipal Code Chapter 9.03 · Text as of 2026-10-04
9.03.010 - Compliance with all laws, regulations and signs.¶
No person shall violate or fail to comply with any provision of federal, state or county laws, regulations or posted signs.
(Ord. 3418 § 1 (part), 2004)
9.03.020 - Use restrictions.¶
No person shall enter any area of lands or facilities managed by the department which are closed to the public, nor use any area of such lands or facilities for an unauthorized purpose. No person shall remain on or reenter lands or facilities managed by the department after a department employee or law enforcement official has specifically withdrawn consent to use such lands or facilities.
(Ord. 3418 § 1 (part), 2004)
9.03.030 - Care of property and facilities.¶
No person shall damage, deface, paint, tamper with or remove any property or facilities managed by the department, including buildings, signs, gates, fences, equipment, markers, trash receptacles, paving material, utilities or water lines.
(Ord. 3418 § 1 (part), 2004)
9.03.040 - Group use.¶
No group, school, club or similar organization, whether formally organized or not, shall hold or conduct any activity on lands managed by the department without prior written approval from the department. Group use of lands and facilities managed by the department is subject to prior reservations, conditions and charges.
(Ord. 3418 § 1 (part), 2004)
9.03.050 - Responsibility for conduct of minors.¶
Parents and guardians shall be responsible for the conduct of their minor children and shall not permit such minor children to do any act on lands or within facilities managed by the department prohibited by these regulations.
(Ord. 3418 § 1 (part), 2004)
9.03.060 - Miscellaneous activities.¶
No person using lands or facilities managed by the department shall engage in activities which endanger property, public safety or environmental resources. Nonpermitted activities include, but are not limited to:
A. Operating or landing aircraft of any nature;
B. Hang-gliding, paragliding or parachuting, except in areas specifically designated for such use;
C. Hitting golf balls;
D. Operating self-propelled model airplanes, boats, automobiles or other model craft;
E. Participating in any activity or operating any device in such fashion which endangers property, public safety or environmental resources.
(Ord. 3418 § 1 (part), 2004)
9.03.070 - Firearms, traps and other weapons.¶
No person shall possess, use, carry, discharge or cause to be discharged any gun, firearm or weapon while on lands or within facilities managed by the department, including any air or gas weapon, spring gun, spear, bow and arrow, crossbow, sling shot, animal trap, knife, explosive or any other form of weapon potentially dangerous to wildlife or human safety. No person shall discharge or cause to be discharged any firearm or weapon onto or across lands managed by the department from outside the boundary of such lands.
(Ord. 3418 § 1 (part), 2004)
9.03.080 - Noise and audio devices.¶
No person using lands or facilities managed by the department shall make or cause to be made any loud, unnecessary or unusual noise which causes discomfort or annoyance to any reasonable person of normal sensitivity. Except for radios and similar devices operated at levels which do not disturb others using lands and facilities managed by the department, no person shall operate or possess any public address system, amplified musical instrument or other noise-producing or transmitting device without written permission from the department.
(Ord. 3418 § 1 (part), 2004)
9.03.090 - Sanitation.¶
No person using lands or facilities managed by the department shall do any of the following:
A. Urinate or defecate other than at restrooms provided;
B. Fail to cooperate in maintaining restrooms in a neat and sanitary condition;
C. Use restrooms set apart for the opposite sex, except when doing so for the purpose of assisting a person with a disability who requests such assistance;
D. Fail to cleanup feces deposited by their pet.;hn0;(Ord. 3418 § 1 (part), 2004)
(Ord. No. 3523, § III, 2009)
9.03.100 - Swimming.¶
No person shall bathe, swim, wade, wash or otherwise enter any water or waterways on lands managed by the department in areas posted against such use.
(Ord. 3418 § 1 (part), 2004)
9.03.110 - Littering.¶
No person shall throw, drop, place, deposit or sweep any object, including, but not limited to, paper, food scraps, bottles, bottle caps, cans, fish or fish parts, soil or rocks onto lands, reservoirs, lakes, streams, waterways and facilities managed by the department, except in trash receptacles. Where trash receptacles are not provided or are full, all such matter shall be carried away by the person responsible for its presence and properly disposed of elsewhere.
(Ord. 3418 § 1 (part), 2004)
9.03.120 - Garbage, refuse and trash.¶
No person shall bring garbage, refuse, trash or yard clippings onto lands managed by the department, nor dump or deposit such garbage, refuse, trash or yard clippings on such lands.
(Ord. 3418 § 1 (part), 2004)
9.03.130 - Unauthorized structures, encroachments and signs.¶
No person shall erect any temporary or permanent obstruction, structure, monument, facility, physical improvement, encroachment or sign on lands or within facilities managed by the department without prior approval by the department. Any such item may be impounded or demolished by the department.
(Ord. 3418 § 1 (part), 2004)
9.03.140 - Abandoned and unattended property.¶
No person shall abandon or leave unattended or without permission any personal property or device on lands or within facilities managed by the department for a period longer than twelve hours. Any property or device so abandoned or unattended may be impounded and disposed of in accordance with law.
(Ord. 3418 § 1 (part), 2004)
9.03.150 - Commercial activities.¶
No person shall do any of the following on lands or within facilities managed by the department:
A. Sell, hawk or otherwise peddle any goods, merchandise or services;
B. Station or place any stand, cart or vehicle for display of goods, merchandise or services;
C. Distribute, circulate or post any handbill, pamphlet or other advertisement regarding sale of goods, merchandise or services;
D. Conduct any commercial filming or photography or activity related to commercial filming or photography except by written permission from the department;
E. Conduct any activity of a commercial nature except by written permission from the department.
(Ord. 3418 § 1 (part), 2004)
9.03.160 - Prohibited conduct.¶
No person shall do any of the following on lands within facilities managed by the department:
A. Harass or otherwise disturb others;
B. Accost another person for the purpose of begging or soliciting;
C. Be under the influence of intoxicating liquor or dangerous drugs in such a condition that the individual is unable to exercise care for their own safety or the safety of others;
D. Engage in loud or disturbing conduct or any act tending to a breach of the peace;
E. Appear in a state of dress or undress in which the pubic hair, genitals, buttocks or any portion of the female breast below the top of the areola are exposed. In addition, no person shall do any thing defined as "disorderly conduct" as outlined in Section 647 of the California Penal Code.
(Ord. 3418 § 1 (part), 2004)
9.03.170 - Alcoholic beverages.¶
The department may regulate the use, possession and transportation of alcoholic beverages within lands and facilities managed by the department.
(Ord. 3418 § 1 (part), 2004)
9.03.180 - Introduction of organisms.¶
No person shall introduce, cause to be introduced or otherwise disperse on lands or within facilities managed by the department any organism, living or dead, including native or nonnative plants, animals, fish, insects or bacteria, except as necessary for fishing bait and as permitted in the California Fish and Game Code.
(Ord. 3418 § 1 (part), 2004)
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