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 more than 20 years, OneRain has been providing private and public sector clients across the country with solutions to optimize water management, heighten regulatory compliance, achieve successful civil works, and save lives.

OneRain’s products and services support critical decisions by providing the highest quality most accurate measurement of rainfall and its consequences, and providing the best tools that enable our clients to manage their missions in Flood Early Warning, Dam Safety monitoring, Reservoir, Stormwater and Wastewater Management. 

Our products and professional services serve agencies and organizations with critical missions that depend on understanding real-time rainfall and hydrology. Our solutions cover the full scope:

End-to-end real-time hydrometeorological monitoring systems

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

OneRainware™ radar rainfall for real-time and analytical applications

StormLink™ telemetry systems and data services

Complete hydrologic network design and implementation

OneRainTech Field Services

Best practices consulting and professional services

Our total systems approach to rainfall and water management includes nationwide 24/7-supported enterprise data collection, monitoring, archiving, alarming notification and web visualization services. Our products include local real-time data collection software, telemetry system integration, rain and other hydrometeorological gauging and professional services, real-time satellite and IP telemetry services, gauge-adjusted radar-rainfall estimates, storm properties analyses and consulting services. OneRain is the industry-leading provider of real-time and historical rainfall-related data and professional services to local, state and federal government agencies across the U.S.

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Latest News

  1. OneRain Announces Major Software Release for its Contrail Hydrologic Data Collection Platform

    LONGMONT, COLORADO, April 14, 2015 - OneRain Inc., a leading provider of real-time and historical hydrologic and rainfall-related data solutions and services, today announced a major new software release for its Contrail® platform that brings full capabilities and accessibility to all devices (desktop, mobile, tablet) for a rich, engaging, context-relevant user experience.

  2. OneRain Announces Participation in 2015 U.S. Society on Dams Conference

    LONGMONT, COLORADO, March 27, 2015 - OneRain Incorporated announced today that James Logan, Chief Executive Officer, and Blake Kellum, Systems Consultant, are scheduled to participate at the upcoming 2015 U.S. Society on Dams (USSD) Annual Meeting and Conference taking place at the Kentucky International Convention Center, Louisville, KY, April 13-17, 2015.