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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Salt Watch Monitoring of the Little Falls in Baltimore County

Salt Watch Monitoring of the Little Falls in Baltimore County

Looking upstream in the rain from the sampling site at Big Falls On Saturday January 10th, 2026 the skies above ...
/ Monitoring, News, Water
Deliberation Continues on the Days Cove Rubble Landfill Update

Deliberation Continues on the Days Cove Rubble Landfill Update

Map of the rubble landfill and receiving waters Thanks for Sapna Bansil at the Baltimore Banner, Natalie Jones at the ...
/ Monitoring, Take Action, Water
Gunpowder RIVERKEEPER® Partners with Blue Water Baltimore for Little Falls Bacteria, Optical Brighteners, and Road Salt Monitoring

Gunpowder RIVERKEEPER® Partners with Blue Water Baltimore for Little Falls Bacteria, Optical Brighteners, and Road Salt Monitoring

Wednesday December 17th, Blue Water Baltimore's Sarah Holter and Dri DeLuca made the trip up from the city to Sparks ...
/ 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 ...
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