Experts measuring rainfall and its consequences™


OneRain's mission is to provide industry leading solutions that empower our clients to perform their critical missions.

water weather and environmental monitoring in real time rainfall data services and analysis rain and stream gauges

For 25 years, OneRain has been providing private and public sector clients across the United States and around the world with solutions to optimize water management, heighten regulatory compliance, achieve successful civil works, and save lives.

OneRain's vertical involvement in water measurement, from gauges through remote sensing and storm analysis, enables us to collect and distribute the best real-time and historical hydrometeorological data available.

OneRain is a recognized leader in measuring and understanding water. Our real-time and historical hydrologic and rainfall-related data solutions, software, and professional services support critical decisions by providing the highest quality most accurate measurement of rainfall and its consequences. OneRain's products and services provide data collection and monitoring of rainfall, water levels and flow rates in streams, rivers, lakes, and dams in real time and provide web-based decision management and early warning alarm notifications to alert of possible hazardous and flood-threatening conditions. Our StormData™ services and professional data analyses enable our clients with critical rainfall-dependent missions to track and understand historical, real-time, and future storm behaviors.  

OneRain's total system approach to rainfall and water management includes:

End-to-end real-time hydrometeorological monitoring and flood warning systems

Contrail® 24/7-reliable data collection and management solutions

StormData™ gauge-adjusted radar rainfall for real-time, future, and analytical applications

StormProperties™ Analysis to create realistic design storms

StormLink™ real-time satellite and IP telemetry systems and data services

Complete hydrologic network design, telemetry system integration and implementation

OneRainTech™ Field Services

Best practices consulting and professional services

OneRain's innovative products and services serve clients in Water Resource Management, Flood Early Warning, Dam Safety and Reservoir Operations, Irrigation, Water Quality, Stormwater and Wastewater Management.

Banner Questions Call 1-800-758-Rain (7246) today

Contrail, DIADvisor, StormLink, StormData, and StormProperties are trademarks or registered trademarks of OneRain Incorporated. ALERT2 is a trademark of the National Hydrologic Warning Council (NHWC).

Latest News

  1. OneRain and High Sierra Electronics Joint Sponsors of the NHWC 2017 Conference

    OneRain Incorporated, in Longmont, Colorado, together with its sister company High Sierra Electronics, Inc. in Grass Valley, California, is proud to sponsor the National Hydrologic Warning Council (NHWC) 2017 biennial training conference and exposition being held in Olympic Valley, California from June 6 to 8, 2017. 

  2. Why is HTTPS-Secure Important for Contrail?

    The Whitehouse mandated HTTPS (HyperText Transfer Protocol Secure) connection for Federal publicly-accessible websites back in 2015.