Water-Quality Monitoring on Lake Houston


April 2018


General public, partner agencies, municipalities, water treatment facility operators

Base Data

USGS Water Data for the Nation


USGS News Release

Launch Lake Houston App

Real-time water-quality, streamflow and water height information for Lake Houston and the surrounding San Jacinto watershed are now available from a new web application from the U.S. Geological Survey, done in cooperation with the City of Houston.

Lake Houston is the primary drinking-water source for Houston, Texas. Real-time data are required to evaluate the effects of watershed influences, such as land-use change and storm events, on Lake Houston water quality. These data will help water treatment facility operators make informed decisions about adjusting treatment methods in response to changing water-quality conditions.

Real-time measurements are updated hourly and visualizations are accessible from 40 USGS observation stations, which collect a combination of lake, stream, groundwater well, precipitation and water-quality data. The map viewer includes supporting data layers, such as current and forecasted weather conditions and hazard warnings. Users can view seven real-time water-quality observation stations: four located on streams that flow into, and three within, Lake Houston. The continuous water-quality monitoring stations are located in urbanized and rural parts of the watershed and measure various parameters such as turbidity, pH and others.

Screenshot of the Data Section of the Lake Houston Water Quality website

Screenshot of the map of USGS water-quality stations in and around Lake Houston

Screenshot of the real-time water quality page from a USGS gaging station on Lake Houston