Middle Great Seneca Creek Watershed Management Categories

Much of the Middle Great Seneca area is located within the City of Gaithersburg. The City has completed an inventory of stream physical conditions, and is in the process of identifying potential projects to address the identified problems. The County will conduct baseline stream monitoring in 1998, and preliminary assessments and management categories will be updated as necessary.

Watershed Protection Areas (areas outside the City of Gaithersburg)

The mainstem of Middle Great Seneca is generally in good condition. A forested riparian buffer is protected by parkland, and there are numerous stormwater management facilities, both on-site and regional, in the tributaries draining to this area, so that effects of runoff from impervious areas in these tributaries are mitigated to some extent. Many of the communities making up Montgomery Village drain to this portion of the watershed, and have predominately been built utilizing stream valley protection and stormwater management approaches.

• Continued application of current environmental guidelines and regulations and other regular protection tools.

Watershed Restoration Areas (areas outside the City of Gaithersburg)

These subwatersheds include Cabin Branch, Whetstone Run, the I-270 tributary and Gunners Branch. Impervious surfaces in these subwatersheds have had an effect on the stream conditions. Areas developed without stormwater controls, and stream reaches above regional facilities where runoff is not controlled until reaching the regional structure have been particularly impacted.

• Pursue watershed-based restoration approach including study and implementation of feasible projects, stream habitat improvements, and pubic education and volunteer projects.
• Conduct baseline monitoring and update preliminary stream condition assessments to further target restoration needs.

• The City of Gaithersburg has conducted a detailed habitat assessment of areas within its boundaries and is in the process of identifying potential projects to address problem areas.
  

Middle Great Seneca Creek Stream Condition, Habitat Conditions, and Management Category Designation

Maps
Land Cover	Impervious Area	Stream Condition	Management Categories

Land Cover Graph

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