Please Do Not Drive Through Flooded Roadways!
Driving through a flooded roadway can be very dangerous for
Loss of Control: When driving through a flooded
roadway, the water can cause a loss of control of the vehicle,
especially if the water is moving or deeper than expected. Your
vehicle's tires may lose traction, making it difficult to steer or
stop the car.
Mechanical & Electrical Failures: If the water
is deep enough to reach the bottom of the car, it can also cause
the engine to stall, which can entrap you into the flood water.
Water can also cause electrical systems in your vehicle to fail or
short-circuit, leaving you without lights or other essential
Hidden Dangers: Floodwater can hide debris, sharp
objects, or other hazards that can damage your car or cause injury
to you and your passengers. It's impossible to see what's below
the water's surface, so you never know what dangers may be lurking
Rapidly Rising Water: Floodwaters can rise rapidly
and unexpectedly, so it's easy to find yourself in a dangerous
situation. Flash floods, in particular, can appear suddenly and
So, if you encounter a flooded roadway, avoiding driving through
whenever possible is best. It's important to stay calm, turn
around, and find an alternative route to ensure the safety of you
and your passengers.
Overview of Low-Water Crossing Web Camera Network
The San Diego County Flood Control District maintains four webcams
at selected low water crossings throughout the county. The image
position of the webcam may change from time to time as the cameras can
be controlled by County emergency staff as they inspect the condition
of the road during flooding, and look up and downstream to inspect the
general condition of the stream.
The webcams transmit their data by Verizon wireless modems.
Occasionally, voice traffic over the nearby cell towers increases, and
Verizon temporarily blocks access to our webcams until the voice
traffic decreases, usually for just a few minutes. If you try to
access the webcam while it is offline, an alternative site can be
accessed at https://sandiego.onerain.com.
The co-located flood warning station is listed next to the webcam link
below. Select Sites in the upper left corner of the home page,
scroll down to the station you are interested in, select the station,
select Stream Level, then click on the graph. The orange line
on the graph represents the road surface, and the red line represents
a road-closed condition.
Quarry Road Flooding on December 14, 2021
most significant storm of the 2021-2022 winter season impacted the
San Diego region on December 14, 2021. This storm was characterized
by an atmospheric river, which resulted in widespread precipitation
across the area.
Rainfall totals on the 14th ranged
from 1 to 2 inches over and west of the peninsular mountain ranges
in San Diego County. The heaviest precipitation occurred during the
late morning and early afternoon as narrow cold-frontal rainbands
developed and produced rainfall rates between 0.5 and 0.75 inches
per hour. These intense rainfall rates led to localized flooding in
The image series provided below
illustrates the flooding that transpired at Quarry Road as a
consequence of this heavy rain event.