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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Data Acquisition and Management

Data Acquisition and Management

HYDRA staffThe Data Acquisition and Management Section provides public notification for the Environmental Services combined sewer overflow (CSO) control program. The city uses data collected from a citywide system of rain gauges, flow monitors and pump stations for the operation, maintenance, repair, and design of city wastewater and stormwater collection systems, and for notification and compliance with federal and state regulations.

The section manages Portland’s HYDRA (Hydrological Data Retrieval and Alarm) system. The HYDRA system collects and stores long-term, continuous rainfall information from over 40 rain gauges strategically placed for optimal rainfall data collection of Portland’s watersheds. The system monitors sewer water levels and flows, sewage pump station wet well levels, and wastewater pH and conductivity. The system also monitors and notifies the Columbia Boulevard Wastewater Treatment Plant’s Operations Center 24 hours a day, seven days a week of any operational problems. Services provided include: 

  • Public notification for the CSO control program 

  • Monitoring of city wastewater and stormwater collection systems

  • Rainfall data collection 

  • Sewer water level and flow monitoring 

  • Sewage pump station operational and critical alarm monitoring 

Hydra Staff

Jennifer A. Martinez
Public Works Manager
Phone: 503-823-7714

Dallas R. Fowler Jr.
Electronic System Technician
Phone: 503-823-7188
Page: 503-323-6389

Glenn Noel LeBrasseur
Communications Engineer
Phone: 503-823-7755

Ivan D. Chen
Communications Engineer
Phone: 503-823-5511
Page: 503-955-0462

Chris Jackson
Electronic System Technician
Phone: 503-823-5619
Page: 503-323-6851

Francisco Perez
Electronic System Technician
hone: 503-823-5354
Page: 503-942-0075


USGS - HYDRA Rainfall 

USGS - Rainfall