Environmental Monitoring

Overview: Because of the economic, biological and recreational importance of the River, there exists a pressing need for independent, comprehensive baseline environmental monitoring and mapping of the river and its watershed. Parameters such as temperature, pH, dissolved solids, Chlorophyll A, Nitrogen, Phosphorous and bacteria will be collected throughout the watershed. This data will be visualized with GIS mapping and shared with regulatory agencies.

Project: In-stream monitoring work will take place at sites of concern along the river and its watershed to determine water quality impacts.

Benefits: This information may be used to assess and report on the river’s relative biological health, potential watershed impacts and monitoring industrial, commercial and recreational impacts along the watershed. This data set will be used to direct county and state agencies to factor existing impacts into TMDL, (Total Maximum Daily Load) recommendations throughout the watershed.


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Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, August 12th 2026

Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, August 12th 2026

With your public support we are now monitoring the Gunpowder River Tidal Basin to provide the public with information about ...
Gunpowder River Water Quality Update: August 11, 2026

Gunpowder River Water Quality Update: August 11, 2026

Gunpowder RIVERKEEPER® is proud to provide weekly water quality information to residents of Baltimore and Harford counties along the Gunpowder ...
Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, August 5th 2026

Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, August 5th 2026

With your public support we are now monitoring the Gunpowder River Tidal Basin to provide the public with information about ...
/ Education, Monitoring, Outreach, Water
Join us for Submerged Aquatic Vegetation Training: 9/19/2026

Join us for Submerged Aquatic Vegetation Training: 9/19/2026

Join us at the Gunpowder Falls State Park Hammerman Area and Dundee Creek Marina for a day of learning about ...
Gunpowder River Water Quality Update: August 4, 2026

Gunpowder River Water Quality Update: August 4, 2026

Gunpowder RIVERKEEPER® is proud to provide weekly water quality information to residents of Baltimore and Harford counties along the Gunpowder ...
Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, July 31st 2026

Gunpowder RIVERKEEPER® Tidal Basin Bacteria Results, July 31st 2026

With your public support we are now monitoring the Gunpowder River Tidal Basin to provide the public with information about ...
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