The Marin Sea Level Rise Viewer app was commissioned by a group of local electeds and staff leadership from Marin’s cities and towns to provide the public with consistent countywide sea level rise data. The app includes six sea level rise scenarios, three of sea level rise alone and three with the addition of a 100-year storm surge event, to explore near, medium, and long term sea level rise. Users can zoom in and out, pan, and click on features to see pop-ups with additional information.

For information about Letters of Map Change (LOMC) please click this link FEMA LOMC

Enter Assessor parcel number (found on your property tax bill) or street address to view FEMA flood maps as well as any nearby properties that have been removed from FEMA’s flood hazard zones via a successful LOMC.

Displays areas that are within the Wildland Interface Area where Fuel Reduction requirements will apply.

View streets that have prohibitions on planned excavations for a specified time, typically five years.

LAFCO - Local Agency Formation Commission.
Visit LAFCO's website to view city and special district boundaries.

This application is used to download Orthographic Imagery tiles from 2018.

View street light locations. Marin General Services Authority contracts with DC Electric Group for streetlight maintenance. Report outages to DC Electric using the application.

Local benchmarks denoting elevation plus National Geodetic Survey geodetic control stations that provide a base of reference for latitude, longitude and height throughout the United States.

GIS Data Portal This site provides access to all of County of Marin's published open (GIS) data. You can view it, map it, style it, chart it, download it or share it

Map application that displays NRGs and Clusters. NRGs are activated in emergencies when people need to be checked on.

Streetsaver App to show PCI for Marin County Roads/Streets. You must select/check a city from the layer list then zoom in that area.

Transportation Authority traffic counts for freeway ramps and selected road segments (some of which are in TAM’s Congestion Management Plan).