Service Description: GRSM_CT_FIRE_SEDIMENT_YIELD_DEPTH

Service ItemId: fb9f2ced3f214304a0cd3892f96c06a2

Has Versioned Data: false

Max Record Count: 1000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: False

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Layers:

• GRSM_CT_FIRE_SEDIMENT_YIELD_DEPTH (0)

Description: One measure of geomorphic activity is sediment yield, which is defined as the amount of sediment per unit area removed from a watershed by flowing water during a specified period of time. Changes in sediment yield can signal changes in many elements of the desert ecosystem, including rates of weathering and erosion, climate, and human activity. Sediment yield affects rates of soil development and influences the recovery of disturbed surfaces downslope from source areas in park landscapes. Sediment yield is strongly affected by surficial materials, topography, rainfall seasonality, and vegetation cover and can be increased by soil disturbance, which often occurs as the result of land use. These data represent output from the Automated Geospatial Watershed Assessment (AGWA), a GIS-based hydrologic modeling tool that uses commonly available GIS data layers to fully parameterize, execute, and spatially visualize results from watershed runoff and erosion models. These models were executed to determine watershed response to the Chimney Tops 2 Fire in Great Smoky Mountains National Park. Planning and assessment in land and water resource management are evolving from simple, local-scale problems toward complex, spatially explicit regional ones. Such problems have to be addressed with distributed models that can compute runoff and erosion at different spatial and temporal scales. The extensive data requirements and the difficult task of building input parameter files, however, have long represented an obstacle to the timely and cost-effective use of such complex models by resource managers. The USDA-ARS Southwest Watershed Research Center, in cooperation with the U.S. EPA Office of Research and Development, has developed a GIS tool to facilitate this process. A geographic information system (GIS) provides the framework within which spatially-distributed data are collected and used to prepare model input files and evaluate model results for two watershed runoff and erosion models: KINEROS2 and SWAT. AGWA (all versions) is designed as a tool for performing relative assessment (change analysis) resulting from land cover/use change. Areas identified through large-scale assessment with SWAT as being most susceptible to change can be evaluated in more detail at smaller scales with KINEROS2. Results can be visualized as percent or absolute change for a variety of output and derived parameters. These features are intended to assist resource managers in identifying the most important areas for watershed restoration efforts and preventative measures.

Copyright Text: DOI BAER Team

Spatial Reference: 26917 (26917)

Initial Extent:

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Spatial Reference: 26917 (26917)

Full Extent:

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Spatial Reference: 26917 (26917)

Units: esriMeters

Child Resources:   Info

Supported Operations:   Query   Create Replica