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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/ Events, Monitoring, Outreach
Gunpowder RIVERKEEPER® Attends North American WATERKEEPER Summit in Pittsburgh, PA

Gunpowder RIVERKEEPER® Attends North American WATERKEEPER Summit in Pittsburgh, PA

Thursday November 13th and Friday November 14th, Gunpowder RIVERKEEPER®'s Theaux Le Gardeur attended the Pittsburgh conference in-person and staffers attended ...
/ Events, Monitoring, Outreach
Gunpowder RIVERKEEPER® Team Presents at 31st Annual Maryland Water Monitoring Council

Gunpowder RIVERKEEPER® Team Presents at 31st Annual Maryland Water Monitoring Council

Thursday November 20th, Gunpowder RIVERKEEPER®’s Theaux Le Gardeur, staff, intern, and volunteer met at the Maritime Conference Center in Linthicum ...
/ Education, Monitoring
Gunpowder RIVERKEEPER® Receives Submerged Aquatic Vegetation Training

Gunpowder RIVERKEEPER® Receives Submerged Aquatic Vegetation Training

Three species of Submerged Aquatic Vegetation (SAV) identified at Dundee Creek Marina on training day On October 2nd 2025 Gunpowder ...
/ Monitoring
Overpass of Landsat-9 Calls for Tidal Monitoring on the Gunpowder River

Overpass of Landsat-9 Calls for Tidal Monitoring on the Gunpowder River

Chesapeake Water Watch Program October 7th marked a day that Landsat-9, a NASA/USGS satellite, made one of its many overpasses ...
/ Monitoring, Water
Gunpowder River Water Quality Summary: Summer 2025

Gunpowder River Water Quality Summary: Summer 2025

Gunpowder Riverkeeper is proud to provide weekly water quality information to residents of Baltimore and Harford counties along the Gunpowder ...
/ Monitoring, Water
Gunpowder River Water Quality Update August 26, 2025

Gunpowder River Water Quality Update August 26, 2025

Gunpowder Riverkeeper is proud to provide weekly water quality information to residents of Baltimore and Harford counties along the Gunpowder ...
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