Water Quality (WQ) Data

The Water Quality Committee maintains the current and historical WQ and cyanobacteria data collected by our volunteers.

LACA's WQ data from 2017 through the present is available for public review at the Virginia Department of Environmental Quality's (DEQ) Virginia Data Explorer (VDE) website. While we prefer to direct users of our data to the VDE website, we can provide raw data files to government agencies, academia and civic organizations that request data for their research and analyses.
LACA's WQ data before 2017 can be obtained by submitting a request to the Water Quality Committee. Please include your full name, organization, email, phone number, data requested (parameters, dates, etc), a justification (how the data will be used) and if you would like approval to release the data to other agencies or in a formal report.

Important Dates - 2026

Instrument Maintenance/Calibration and Volunteer Training: March 30

Monitoring Event #1 (April): Training on April 6 / Monitoring on April 7

Monitoring Event #2 (June): Training on June 1 / Monitoring on June 2

Monitoring Event #3 (August): Training on August 3 / Monitoring on August 4

Monitoring Event #4 (October): Training on October 5 / Monitoring on October 7

WQ Data Maps

October 2025 Data Maps

(next monitoring period is April 2026)

LACA Historical WQ Data Maps