OneRain

What OneRain does

OneRain, founded in 1992 and headquartered in Longmont, Colorado, provides environmental monitoring and hydro-meteorological solutions focused on flood warning, dam safety, and water resource management. The company is a wholly-owned brand within Advanced Environmental Monitoring (AEM), a diversified environmental monitoring group whose portfolio also includes Davis Instruments, Earth Networks, FTS, High Sierra Electronics, Lambrecht Meteo, Vieux, and WeatherWorks.

The core offering is AEM Elements 360 (formerly the Contrail software platform), a multi-tenant SaaS decision-support application that aggregates rainfall, water level, streamflow, seismic, and weather data from multiple sensor types and external sources (ALERT/ALERT2, StormLink, USGS, METAR, RAWS, HADS, CDEC, SCADA, Modbus, IoT) into a single visualization and alarm management environment. The platform is delivered alongside a StormLink telemetry hardware family (satellite and IP receivers, A/A2 concentrators, IQ field decoders, RF receivers, cameras, and a Quick Deploy Early Warning System) and the StormData services suite — real-time, historical, and forecast gauge-adjusted radar rainfall plus StormProperties design-storm analysis. Supporting offerings include ALERT2 protocol solutions for the National Hydrologic Warning Council standard, hydrologic network design and field services, customized training, and 24/7 extended support.

OneRain sells primarily via direct, consultation-driven enterprise field sales to government agencies (federal, state, county, and municipal flood control districts, emergency management agencies, and water resource agencies) and a limited set of utility and irrigation enterprises. Revenue is generated through a mix of subscription software (Contrail Web pay-as-you-go, AEM Elements 360, annual data/subscription fees), hardware sales, recurring data services, project-based professional services, and premium support. Named federal customers include the U.S. Bureau of Reclamation, USGS, U.S. Army Corps of Engineers, and the Bureau of Indian Affairs (Safety of Dams program covering 140+ dams), with additional deployment across county flood control districts, municipal stormwater agencies, and water utilities in the U.S. and Australia.

Name

OneRain

Legal name

OneRain Incorporated

Website

https://onerain.com

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

11–50 employees

Short description

OneRain, an AEM brand, provides environmental monitoring and hydro-meteorological solutions for flood warning, dam safety, and water resource management. It serves government agencies, water utilities, and irrigation districts with SaaS decision-support software, telemetry hardware, and gauge-adjusted radar rainfall data services.

Ownership category

akta.pro rank

Product category

Environmental Monitoring Software

NAICS

Geophysical Surveying and Mapping Services (54136)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Real-Time Monitoring & Smart Stormwater (Sensors, SCADA/IoT, RTC) (EUANAEAK)

akta.pro secondary industries

Flood Risk Modeling, Mapping & Forecasting (Hydrology/Hydraulics, Digital Twins) (EUANAEAH), Flood Control & Protection Infrastructure (Levees, Floodwalls, Gates, Pump Stations) (EUANAEAI), Online Monitoring, Sensors & Instrumentation (SCADA-integrated analyzers, probes, samplers) (EUANAJAC)

Keywords

• Flood warning systems
• Hydro-meteorological monitoring
• Environmental monitoring software
• Dam safety monitoring
• Rainfall data services

Headquarters

HQ city

Longmont

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Software Subscriptions (SaaS): Contrail Web and AEM Elements 360 are offered as subscription-based software-as-a-service. Contrail Web uses a 'pay as you go' model with slot-based multi-tenant enterprise hosting. Annual data and software subscription fees apply for solutions like StormLink Quick Deploy EWS.
2. Hardware/Telemetry Products: Sale of StormLink telemetry hardware including receivers, concentrators, field decoders, cameras, and Quick Deploy Early Warning Systems. Hardware includes cellular modems and sensors.
3. Professional Services: Hydrologic network design services, field installation and maintenance services, training programs (on-site, in-house, and online), and network evaluation consulting.
4. Data Services: StormData real-time and historical GARR data services, StormProperties Analysis for design storms, and post-event forensic rainfall analysis. Includes optional Gold Reports and basin-averaged data products.
5. 24/7 Extended Support: Premium support services outside normal business hours for mission-critical data collection systems. Includes remote diagnostics and direct access to technical support staff.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

OneRain provides end-to-end hydro-meteorological monitoring and flood early-warning solutions for government agencies, water utilities, and dam operators. The company sells the AEM Elements 360 SaaS decision-support platform (formerly Contrail), the StormLink telemetry hardware family for real-time remote sensing, and StormData gauge-adjusted radar rainfall (GARR) data services. Complementary offerings include ALERT2 protocol telemetry, field installation and maintenance, hydrologic network design, and customized training.

Product overview

OneRain, an AEM brand, provides environmental monitoring and flood safety solutions through a platform-plus-modules architecture. The core AEM Elements 360 (formerly Contrail) multi-hazard decision support SaaS platform aggregates water, rainfall, and weather data with 24/7 visualization and alarm management. Supporting modules include GateOps for reservoir gate operations, Earthquake Data Services for seismic monitoring, and specialized software for Dam Safety, Flood Warning, and High Water Detection. The StormLink telemetry family (including Concentrator, Camera, Quick Deploy EWS, IQ Field Decoder, RF Field Receiver) enables real-time data collection from remote sites via satellite and radio. StormData services provide gauge-adjusted radar rainfall (GARR) data in real-time, historical, and forecast formats, with StormProperties Analysis for Design Storm creation. ALERT2 Solutions support radio-based flood early warning protocols. Professional services cover network design, field services, installation, maintenance, and training.

Differentiator

Problem solved

Functional benefit

Brands

• Contrail: Environmental monitoring software platform for real-time flood early warning, situational awareness, and decision support. Now part of AEM Elements 360.
• StormLink
• StormData
• StormProperties
• GateOps

Products and services

• AEM Elements 360 (formerly Contrail) Multi-hazard decision support SaaS platform that aggregates water, rainfall, and weather-related environmental data from multiple sensor types and sources, providing 24/7 web-accessible visualization, dashboards, automated alerts, and advanced alarm management for flood and dam safety use cases.
• Contrail Web SaaS Edition Software-as-a-Service edition of Contrail providing multi-tenant enterprise deployment with a pay-as-you-go subscription model for additional web views and sensor data sources.
• StormLink Telemetry Real-time satellite and IP telemetry systems and data services that collect data from and interact with field sensor sites in previously unreachable locations, leveraging L-band satellite communication impervious to rain fade with guaranteed data delivery and two-way communication.
• StormData Real-Time GARR Real-time gauge-adjusted radar rainfall data product delivering ground-truthed spatially distributed rainfall estimates for hydrological applications.
• StormData Historical GARR Historical gauge-adjusted radar rainfall archive recreating rainfall events from 1993 to present, providing shape files and basin-averaged data products for hydrological studies.
• StormData StormProperties Analysis Analysis service creating realistic Design Storms by characterizing real-world storm behaviors using hundreds of thousands of storm cells, leveraging TITAN (UCAR) specialized software for storm geometric property identification.
• ALERT2 Solutions Radio-based telemetry protocol solutions aligned with the National Hydrologic Warning Council's ALERT2 standard for real-time data monitoring and alerting in flood early warning systems.
• StormLink Quick Deploy Early Warning System All-in-one early warning system for short or long-term deployments with multi-sensor suite, satellite telemetry, solar power, and integration with AEM Elements 360, deployable in about 20 minutes.
• StormLink A/A2 Concentrator Hardware device delivering ALERT and ALERT2 data from radio receive sites via TCP/IP with guaranteed delivery to data collectors and data buffering during network outages.
• StormLink Camera Remote off-grid imaging solution with long-distance IR illumination up to 590 ft, pan-tilt-zoom operation with 30x zoom, integrated cellular communications, and AEM Elements 360 Camera cloud-based software.
• StormLink IQ Field Decoder Mobile ALERT/ALERT2 receiver solution with web browser interface for switching frequencies and decoding messages, used for field troubleshooting and gauge network verification.
• StormLink RF Field Receiver Radio-based ALERT2 receiver enabling in-the-field analysis of gauge data messages for troubleshooting, verification, and optimizing gauge network performance.
• OneRainTech Field Services Professional installation, maintenance, and calibration services for hydrologic monitoring networks delivered by OneRain's field-services technicians.
• Hydrologic Network Design Services Expert services for existing network evaluation and new network design, providing in-depth analysis with recommendations for architectural changes and upgrades to enhance system reliability and resiliency for flood forecasting, dam safety, and water resources management.
• Training Services Web-based and on-site training covering water data management, flood warning, flood forecasting, rainfall intensity, streamflow, hydrologic analysis, ratings curves, software training, and field training options; customized for groups of 4 or more.
• 24/7 Extended Support Premium extended support service supplementing normal automated monitoring with remote diagnostics and skilled support outside normal business hours for data collection systems.

Quantifiable outcome

• Reservoir discharge calculation time reduced from 30 minutes to real-time automated recommendations
• +3 more outcomes

Named customers19 records

Segments6 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• AEM (Advanced Environmental Monitoring)coreStrategic or Co-development PartnerOneRain is a wholly-owned subsidiary of AEM (Advanced Environmental Monitoring). OneRain's Contrail software has been integrated into the AEM Elements 360 multi-hazard decision support platform. OneRain operates as a brand under the AEM corporate umbrella alongside Davis Instruments, Earth Networks, FTS, High Sierra Electronics, Lambrecht Meteo, Vieux, and WeatherWorks.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Vaisala: Vaisala is a global leader in weather, environmental, and industrial measurement instruments, including road weather stations, hydrology sensors, and lightning detection. It competes directly with OneRain in hydrometeorological monitoring instrumentation and telemetry for government and infrastructure customers.
• Campbell Scientific: Campbell Scientific designs and manufactures data loggers, sensors, and environmental monitoring systems used extensively in hydrology, meteorology, and water resources research. It overlaps OneRain in environmental data acquisition, telemetry, and custom monitoring network design for research and government customers.
• KISTERS: KISTERS provides hydrology, meteorology, and water-resource software plus supporting sensors and telemetry (including its WISKI/Hydromet platform). It is highly comparable to OneRain as a software-and-services stack for flood warning, dam safety, and water resource management agencies, particularly in Europe and APAC.
• Stevens Water Monitoring Systems: Stevens manufactures water level, flow, and quality sensors and data loggers used in hydrology, stormwater, and wastewater networks. It is comparable to OneRain on the instrumentation side — supplying hardware and data acquisition for the same kinds of monitoring networks OneRain integrates.
• Sutron: Sutron designs and supplies hydrometeorological monitoring and telemetry systems for dams, rivers, weather stations, and irrigation, and is also part of the AEM family of brands alongside OneRain. It is structurally a direct competitor historically and remains a closely comparable hydrology hardware/telemetry peer.
• Earth Networks: Earth Networks operates large-scale weather observation and lightning-detection networks and is a sister AEM brand. It overlaps OneRain on environmental sensing infrastructure, real-time hazard alerting, and data services sold to government and enterprise customers, and is being consolidated within the AEM Elements 360 platform.

Broad incumbents

• Xylem (YSI / SonTek / Teledyne Water): Xylem owns multiple water and environmental instrumentation brands (YSI, SonTek, etc.) serving surface water, water quality, and flow measurement applications. It is a broader incumbent that overlaps OneRain in hydrology instrumentation and smart water management, but with a much larger portfolio spanning utility, industrial, and analytics markets.
• Hach (Danaher): Hach, a Danaher company, supplies water quality and process-monitoring instruments and software widely used in drinking water, wastewater, and environmental monitoring. It addresses overlapping environmental-monitoring needs as OneRain — particularly for water quality, NPDES compliance, and municipal utility customers — but as a much broader portfolio.

Emerging players

• DTN: DTN provides weather, climate, and agricultural data services, including operational meteorology and decision-support for utilities, transportation, and emergency management. It is a partial-overlap emerging player to OneRain on the data-services and decision-support side, particularly for flood, road weather, and ag/water customers.
• Trimble Water (formerly Cityworks / Trimble Unity): Trimble offers utility- and water-asset management software (Trimble Unity and adjacent geospatial offerings) used by municipalities and water/wastewater utilities. It is a partial-overlap emerging player adjacent to OneRain in stormwater utilities and water resource management, though framed more around asset/operations management than real-time flood early warning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/AEM_eco
• YouTubeyoutube.com/channel/UCIEVCZ05K4xayt5yXed48AA
• Facebookfacebook.com/Advanced-Environmental-Monitoring-AEM-110375228108391
• LinkedInlinkedin.com/company/onerain
• Instagraminstagram.com/aem.eco

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OneRain