Real Flood Warning. No monthly fees.
One alarm. One job. Upfront pricing. No apps, no subscriptions, no cell service required.
Starting at $1,900.
Floodwater can rise fast, often after dark
Documented U.S. floods show how quickly floodwater can rise, sometimes overnight while people are asleep. When seconds matter, waiting on a phone alert, cell signal, or internet connection is a gamble. Crest Alert is built to provide an immediate local warning when floodwater reaches your chosen sensor point.
Real flood events have shown how fast floodwater can rise:
Guadalupe River
25 feet in 45 minutes at night in 2025
San Juan River
9 feet in 2.5 hours at night in 2025
Big Thompson River
20+ feet in under an hour at night in 1976
Patapsco River
~18 feet in under 2 hours in 2018
Blanco River
40 feet in about 2 hours overnight in 2015
Skagit River
37 feet overnight during flooding in 2021
Why Crest Alert?
Crest Alert is built to provide dependable flood warning where phones, apps, and networks often fail. Our alarms activate locally when floodwater reaches your chosen sensor location.
No Subscriptions or apps
No subscriptions. Ever. — Buy it once, own it. No fees, no accounts, no contracts.
No internet or cell service required
Crest Alert operates entirely on-site — no network, no cell service, no internet connection required.
Loud siren and flashing strobe
When floodwater reaches the sensor, Crest Alert activates a loud audible alarm and bright visual warning designed to wake people up and get their attention fast.
Built for remote locations
The alarm runs on solar, AC, or both, and stays operational for up to 3 days without any power input. That makes it practical for remote sites and areas where outages are common.
Why not just rely on weather alerts or phone warnings?
Weather alerts and phone notifications can help, but they are not always enough.
Phones can be silenced, left on a nightstand, lose service, lose power, or fail to wake people up in time. Weather alerts also cover large areas and may not reflect what is happening at your exact location near the river.
Crest Alert is different. It provides an on-site warning triggered by actual floodwater reaching your chosen sensor point. It does not wait on cell service, internet access, or someone noticing a notification.
When floodwater reaches the sensor, the alarm sounds where people need to hear it.
Straight-Forward Pricing
No subscriptions. No service contracts. No hidden quote process. Choose the power configuration that fits your site.
Hardwired
$
1900
Battery maintained automatically
Ideal where utility power is available
Continues operating during
power outages
Solar
$
2400
Fully off-grid solar operation
Battery maintained by solar panel
Ideal for remote or rural locations
Operates without utility power
Hardwire + Solar
$
2700
AC Powered with solar backup
Designed for maximum reliability
Ideal where outages are common
Provides power redundancy
