ALEXANDRIA, VA — For many Alexandrians, summer means time on the Potomac.

Whether it’s launching a kayak from Jones Point Park, paddleboarding along the waterfront, casting a fishing line, or simply watching boats drift past Old Town, the river is one of the city’s greatest assets.

Now, before heading out, residents have a new way to see what’s happening beneath the surface.

A New Tool for River Users

The Reservoir Center for Water Solutions, working with the Potomac Riverkeeper Network, Anacostia Riverkeeper, and the Anacostia Watershed Society, has launched a new public water-quality dashboard that provides near-real-time information on conditions in the Potomac River.

The online dashboard gathers data from monitoring stations throughout the watershed, including one at National Harbor, directly across the river from Alexandria. Most measurements update approximately every 15 minutes, giving boaters, anglers, and paddlers a current snapshot of river conditions before they head onto the water.

The dashboard tracks several important indicators, including:

• Water temperature
• Dissolved oxygen
• Water clarity (turbidity)
• pH
• Conductivity
• Chlorophyll
• Chloride

It also displays E. coli monitoring information collected through the Chesapeake Monitoring Cooperative, although those bacteria results are updated separately and are not real-time.

According to the Reservoir Center, the project was created to make scientific water-quality information more accessible to the public and to help people better understand changing river conditions.

Why It Matters to Alexandria

For Alexandria residents, the timing couldn’t be more appropriate.

This summer has already highlighted how quickly conditions on the Potomac can change. Record-breaking heat recently pushed river temperatures into the 90s, contributing to a fish kill upstream that prompted an investigation by Maryland environmental officials. Earlier this year, the collapse of the Potomac Interceptor sewer line resulted in the release of untreated wastewater into the river before emergency repairs were completed.

Not a Substitute, But a Helpful Tool

While the new dashboard does not replace official health advisories or swimming recommendations, it gives the public another valuable tool for making informed decisions.

For example, lower dissolved oxygen levels can indicate stress on fish and aquatic life. Higher turbidity often follows heavy rain as stormwater carries sediment and debris into the river. Chlorophyll measurements can signal increased algae growth, while water temperature affects everything from fish behavior to overall river health.

Officials with the Potomac Riverkeeper Network say improving public access to water-quality information is an important step in helping residents better understand the river they use every day.

For Alexandria, where the Potomac serves as both a recreational playground and the city’s front yard, the dashboard offers another way for residents to stay connected to the health of one of the region’s most important natural resources.