About Us

COG is the one place in metropolitan Washington that regularly brings leaders together to develop solutions to the region's major challenges. COG prepares plans enabling the region to receive federal funding, provides members with research and data to inform decision-making, and offers a wide range of programs, including commuter services, cooperative purchasing, technical assistance and grants, and public outreach campaigns.

Transportation

Through the National Capital Region Transportation Planning Board (TPB), area officials, planners, and engineers ensure a well-managed and maintained transportation system. The TPB, which is staffed by COG, conducts the federally mandated transportation planning process for the region and ensures the uninterrupted flow of federal transportation funds that area jurisdictions receive.

Environment

COG's work engages leaders in various environmental fields from water quality experts to climate scientists. Together, they are advancing regional efforts to restore local waterways, improve air quality, reduce greenhouse gas emissions and address climate change, promote recycling, and enhance and preserve green space and agriculture.

Community

Area officials and experts, including planning and housing directors and child welfare and health officials, work together with their counterparts at COG to help shape stronger communities throughout the region.

Homeland Security & Public Safety

COG brings police chiefs, fire chiefs, emergency managers, and other leaders together as part of its work to strengthen regional public safety coordination, homeland security planning, and emergency communication.

Home>Documents>Loudoun County Baseline Biological Monitoring Survey (2004 – 2006) - Phase II: Clarks Run, Catoctin Creek, Quarter Branch, Dutchman Creek and Piney Run Conditions

Print Email

Publications

Loudoun County Baseline Biological Monitoring Survey (2004 – 2006) - Phase II: Clarks Run, Catoctin Creek, Quarter Branch, Dutchman Creek and Piney Run Conditions

Sep 30, 2006

Summary

Under Phase II of a proposed multi-phased study, Clarks Run, Catoctin Creek, Quarter Branch, Dutchman Creek and Piney Run were surveyed to systematically evaluate existing physical, chemical and biological stream quality conditions. Using COG’s Rapid Stream Assessment Technique (RSAT), 16 strategically located and representative mainstem and tributary sites (totaling approximately five stream miles) were surveyed between October 2005 and April 2006. This report presents the findings of the RSAT survey, and provides valuable baseline data for assessing general stream conditions in the five preceding watersheds.

In addition, COG staff analyzed existing riparian buffer conditions under 35, 50, 100, and 200 foot width scenarios (on both sides of the stream) for the Catoctin Creek watershed. Using the Loudoun County stream geodata file and year 2005 Spot 5 satellite imagery within the ArcGIS platform, riparian buffer conditions were additionally classified into two generic forest and non-forest categories.

Results: 1 Record found.

Tags:

Stormwater Stream