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COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

Public Works will re-open our front counter to the public on July 6 and start providing some modified services.  Our hours will be 8 – 5, with closure from 12 – 1:30 for sanitation. Masks are mandatory in our building, and we ask that you adhere to physical distancing protocol. We will have limited services at our front counter and will not be accepting drop in meetings.  Please contact 805-781-5252 to make an appointment with staff.  Bus passes can be purchased at the Kiosk on the corner of Osos and Palm or by phone via Follow us on Twitter @SLOCountyPWD for the latest updates.

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Search Misc Historic Maps (Surveyors-Good Stuff, Look Here)

Forms & Documents > Maps > Misc Historic Maps (Surveyors-Good Stuff, Look Here)

Name Description Type
Historic Quad Maps Folder
CO-SLO-1874-MAP File
CO-SLO-1890-MAP File
CO-SLO-1913-MAP File
1941-Forestry File
1943-County-Road-Map File
California-Valley-Map File
HWY-101-1930-original-hwy-algn File
HWY-101-1957-northern-section-re-align File
HWY-101-1960-southern-section-re-align File
Nipoma-Rancho File
Nipoma-Rancho-1850 File
Nipoma-Rancho-1887 File
Petrero-San-Luis File
port-san-luis-harbor File
Rancho-Nacimiento File
Town-of-Cambria File

Contact Public Works via web form, email, or call us at (805) 781-5252.