Trusted Across 18 U.S. States
HDR ENGINEERING
Hohonu allowed engineering decisions to be confidently made and gave the client real event data to better understand the reasoning behind those decisions.
SAN FRANCISCO
PARKS & REC
Hohonu has been great in helping us bring data online to our many boaters and for dredging activities. The overall installation was painless and the design is military tough for the saltwater environment.
LEE COUNTY
PUBLIC SAFETY
For the first time, we are starting to get data which will lead to more resilient and better prepared communities. We are proud to partner with Hohonu to deploy this first set of devices in Southwest, Florida.

Who We Serve
Hohonu helps flood decision-makers act with confidence. We deliver real-time, ground-truth water data that supports smarter planning, faster response, and greater resilience for the communities you serve.
Emergency Management & Public Safety
Close roads before they flood and allocate resources in real time.
Environmental Protection & Planning
Protect coastlines and meet compliance goals with transparent, defensible data.
Public Works, Stormwater, & Engineering
Design resilient infrastructure with hyperlocal flood data that supplement models.
Ports &
Operators
Keep vessels moving and ports productive with real-time depth and water level intelligence.
3 MILLION+ HOURS OF MONITORING ACROSS 200 LOCATIONS AND 18 STATES



























Designed for Every Type of Flood
Every flood is different - Hohonu monitors them all. Real-time visibility across all flooding types provide communities with the insight they need to prepare, respond, and recover.
Tidal Monitoring
Track daily tides and nuisance flooding events that federal gauges sometimes miss.
Urban Flash Flooding
Detect sudden surges in urban stormwater systems in real time.
Compound Events
Monitor when storm surge and rainfall interact
River & Inland Flooding
Extend coverage beyond the coast with hyperlocal data from rivers, lakes, and watersheds.
From Sensors to Strategy
Ground-truth measurements power the entire platform, making dashboards, forecasts, and analytics more accurate and actionable.
Suite of Robust Sensors
Low-cost ultrasonic and radar technologies for daily and extreme event monitoring over water or over land.
Seamless Workflow Integrations
Directly connect with NWS, ArcGIS/ESRI, and other systems—or embed live data on your own website with just a line of code.
Public Live Maps
Real-time, public dashboard and mobile app that keep communities informed and build trust.
Strategic Planning & Response
An expanding suite of tools - from threshold analyses to forecast calendars - to enable confident decision-making
Meet the Team
50+ Years of Collecting Environmental Data
With The Latest Engineering Technologies