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Tanyard Branch Watershed Assessment
The Tanyard Branch, located in Easton, Talbot County, MD is a small watershed that drains into the Tred Avon River. The Center for Environment and Society (CES) and the GIS Program at Washington College, in partnership with the Midshore Riverkeeper Conservancy (MRC) and Aloft Aerial Photography, conducted an assessment of this watershed for agricultural BMP implementation opportunities, which include assessments of urban neighborhoods, upland and developed areas, stream corridors, and a mix of commercial and publicly owned properties for stormwater management. The primary goals of this project were to understand the nature of the water quality issues for the watershed and to design and implement an improvement plan for water quality. The following webpage contains a bevy of products that mark the beginning of this project including aerial video, GIS analysis and an interactive online map of the watershed.
Our data is also available at ArcGIS Online.
Tanyard Watershed
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Deliverables
Address Points
This map includes the address points of commercial, no building and residential properties within the Tanyard Watershed Boundary.
Aspect
This map shows the direction each slope faces within the boundary; this can help to classify runoff potential as certain slopes may be better suited for flora.
Buildings
This map shows the building types, commercial, no building or residential, on parcels within the watershed as well as the percent of land they cover within the boundary.
Canopy
This map displays the canopy cover within the watershed boundary and is classified by tree type into three categories, deciduous, evergreen and mixed.
Contours
This map shows the elevation of the Tanyard Watershed with contours showing every two foot change in elevation.
Digital Elevation Model
This map displays the elevation of the Tanyard Watershed as a smooth digital model.
Flow Length
This map displays the paths water flows throughout the watershed; the stormwater system has been added to show how the addition of stormwater pipes has altered the flow of the water.
Green Grass
This map displays an evaluation of the grass based on a visual assessment of the brightness of the grass from aerial imagery of the watershed. The classification of the grass was based on a green factor score from 0-3 and the amount of each group found within the watershed was subsequently factored.
Hillshade
This map displays a simulated three-dimensional effect that shows how shade would occur naturally on the terrain.
Impervious
This map shows the range of impervious surfaces found within the Tanyard Watershed as well as the amount of area they hold.
LBCS
This map (currently in progress) displays the parcel data within the Tanyard Boundary based on landuse.
Parcels
This map shows the parcels within the boundary based off of commercial or residential use.
Slope
This map displays the slope of the Tanyard Boundary with more extreme slopes shown in red and flatter areas in green.