Las Posas Estates Drain and N. Ramona Place Drain are located along Ramona Place between Las Posas Estates Detention Basin and Ramona Detention Basin in the county unincorporated area and the city of Camarillo. FEMA mapped these drains as an Approximate Zone A Special Flood Hazard Area (SFHA) on the Flood Insurance Rate Map (FIRM) in the 1980’s. The Las Posas Estates Detention Basin and Ramona Detention Basin were both constructed by the Soil Conservation Service (SCS) in the early 1960’s. The two detention basins were later rebuilt by the Watershed Protection (WP) in 1992 to meet the WP’s standards. However, the SFHA designation has not changed. Currently, thirteen (13) residential structures are affected by the SFHA designation. With updated hydrologic and topographic data and the latest hydraulic modeling techniques, the Ventura County Public Works Agency- Watershed Protection working with Kasraie Consulting, has completed a detailed floodplain analysis to better assess the flood hazards in the area. The analysis report was used to support a Letter of Map Revision (LOMR) from FEMA. The LOMR application was filed on 5/21/2021. Depending on the complexity, a LOMR process normally takes about 3 to 6 months.
Based on the detailed floodplain analysis, much of the watershed is regulated by the two detention basins. However, stormwater runoff from un-regulated drainage areas downstream of the two basins will create ponded flood water in low lying areas during a 100-year flood (base flood) event. The ponded flood water will not pose flooding threats to residential structures which are built on higher elevations. Figure 1 below shows the proposed 100-year (high risk) and 500-year (moderate risk) floodplains.
Interested persons may contact the Public Works Agency at: (805) 258-2423, or call Kasraie Consulting for additional information at (805) 340-4744 during normal business hours.
The Federal Emergency Management Agency (FEMA) in collaboration with the County of Ventura and the Faria Beach Homeowners Association (HOA) have been conducting a Letter of Map Revision (LOMR) re-study along the coastal community of Faria Beach, California.
On January 29, 2021, the California Coastal Analysis and Mapping (CCAMP) for the Ventura County Coast floodplain maps, including the Faria Beach, went into effect. See the news item below.
Subsequent to the adoption of CCAMP, Faria Beach HOA filed a Letter of Map Revision application which once adopted will change the effective floodplain boundaries and Base Flood Elevations (BFE) along portions of the Faria Beach coastal community. The Draft Flood Insurance Rate Maps (FIRM) for the affected areas of the Faria Beach may be found through the link below:
Specifically, the flood hazard information will be revised along the Pacific Ocean from a point approximately 600 feet east of the intersection of Hobson Road with the Pacific Coast Highway to a point approximately 1,400 feet west of the intersection of A Lease Canyon Road and the Pacific Coast Highway.
As a result of the mapping revisions the coastal Base Flood Elevations listed for mapped VE Special Flood Hazard Areas (SFHA) will decrease two (2) to five (5) feet. Within the area of revision, mapped VE SFHA’s will increase (widen) in some locations and decrease in others. The maximum SFHA increase is approximately 28 feet and the maximum SFHA decrease is approximately 15 feet.
Additionally, maps and detailed analysis of the revision can be reviewed with appointment at:
Ventura County Public Works AgencyDevelopment and Inspection Services800 South Victoria AvenueVentura, CA 93009(805) 654-2423
Interested persons may also call Kasraie Consulting for additional information at (805) 340-4744 during normal business hours.
Santa Clara River Watershed Flood Insurance Re-Study
The Federal Emergency Management Agency (FEMA) in collaboration with Ventura County local communities has been conducting a Flood Insurance Re-Study (FIS) for the Santa Clara River watershed. The study area covers the cities of Ventura, Oxnard, Santa Paula, Fillmore, and the county unincorporated areas. A Preliminary Flood Insurance Rate Map (FIRM) was release on September 26, 2014. In May 2018, a flood risk review meeting was held in Ventura to introduce the preliminary maps and collect comments from local communities. Since the release of the preliminary FIRM, the Ventura County Public Works Agency-Watershed Protection and the cities have worked together to perform technical reviews and submit appeals to FEMA to ensure the flood hazard mapping products are produced using the latest technologies and are based on the best available information. Incorporating the review comments and technical appeals, FEMA has released a Revised Preliminary FIRM on July 31, 2020. Local communities have 30-days to comment on the revised preliminary maps followed by a 90-day appeal period. The appeal period begins on March 11, 2021 and ends June 9, 2021.
FEMA's announcement of the appeal period can be found at:
You can find the Preliminary FIRM at:
New Maps Will Become Effective January 29, 2021.
California Coastal Analysis and Mapping (CCAMP) for Ventura County Coast
FEMA released the Preliminary Flood Insurance Rate Map (FIRM) on September 30, 2016. Following the release, public outreach meetings were held in cities of Ventura and in Oxnard in May 2017 to introduce the preliminary maps to the affected communities and to collect comments from residents. During the appeal period which ended in September 2017, the Ventura County Public Works Agency in collaboration with cities of Ventura, Oxnard, and Port Hueneme, and local communities had conducted a detailed technical review of the coastal flood hazard analysis and mapping products and submitted review comments and appeals to FEMA. After resolving all the comments and appeals, FEMA issued a Letter of Final Determination (LFD) on July 29, 2020 and the Preliminary FIRM will become effective on January 29, 2021. According to the National Flood Insurance Program (NFIP) regulations Section 60.3 (d and c), local communities are required to adopt the effective FIRM and the Flood Insurance Study (FIS) reports thereafter.
You can find the Preliminary FIRM at:
While Ventura County’s weather patterns can be unpredictable at times, it is crucial that members of the community understand the risks of the aftermath of a wildfire. Heavy rainfall in burn areas after a wildfire cannot absorb the water causing flooding as well as the danger of landslides, mud flows, and debris flows.
Many risk factors are involved in flooding events, with little to no warning, including damage to infrastructures including roadways, bridges, public buildings and residential homes putting the public in danger.
While the Ventura County Public Works Agency’s Watershed Protection District works to ensure the safety of the public by reducing the impact of flooding, erosion and water pollution on our community to protect lives, property and the environment, it is imperative to prepare your own home and property while also knowing the steps to take in the event of a flood.
To ensure you and your family are ready for natural disasters, including floods visit the #CAFloodPrepWeek booth Oct. 21-25 from 8 a.m. to 5 p.m. at the Hall of Administration, County of Ventura for additional information and resources regarding disaster preparedness, flood hazard, flood safety, and flood insurance. In addition, a free copy of the Homeowner Guide for Flood, Debris, and Erosion Control and staff will be available to answer your specific questions about flood hazards, flood safety, and flood insurance.
Tips to prepare before or in the event of a flood
Be prepared to respond to flooding by taking the following actions before rainfall and flooding begin:
- Assemble emergency supply kits for your home, workplace, and vehicle.
- Store the materials for protecting your home in a location away from potential flooding
- Maintain fuel in your cars; electrical outages might make gasoline pumps inoperable.
- Identify safe routes from your home or work place to higher ground. Determine whether you can use these routes during flooding or storms.
- Clear debris and overgrowth from gutters and storm drains.
If a flood is likely in your area, you should:
- Listen to the radio or television for information.
- Be aware that flash flooding can occur. If there is any possibility of a flash flood, move immediately to higher ground. Do not wait for instructions to move.
- Be aware of streams, drainage channels, canyons, and other areas known to flood suddenly. Flash floods can occur in these areas with or without such typical warnings as rain clouds or heavy rain.
If you must prepare to evacuate, you should do the following:
- Secure your home. If you have time, bring in outdoor furniture. Move essential items to an upper floor.
- Turn off utilities at the main switches or valves if instructed to do so. Disconnect electrical appliances. Do not touch
electrical equipment if you are wet or standing in water.
Subscribe to these resources for additional helpful information:
- Ventura County Emergency Information: vcemergency.com
- Ready Ventura County: readyventuracounty.org
- Ventura County Public Works Agency: vcpublicworks.org
- VC Watershed: vcwatershed.net/fws
- Local County Road Closures: vcpublicworks.org/roadclosures
- SigAlert: sigalert.com
- National Weather Service: weather.gov
- Ventura County Flood Info: vcfloodinfo.com