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Hydrologically Conditioned Digital Elevation Model of the Difficult Run watershed in Fairfax County, Virginia Derived from 2012 lidar LAS Points

Dates

Publication Date
Time Period
2012-04-12
Start Date
2012-04-12
End Date
2012-04-14

Citation

Hopkins, K.G., Metes M.J., Noe, G.B., and Claggett, P.R., 2018, Difficult Run Floodplain Sediment and Nutrient Retention Ecosystem Service Datasets, Fairfax County, Virginia: U.S. Geological Survey data release, https://doi.org/10.5066/F7K936HB.

Summary

Hydrologically conditioned digital elevation model (DEM) generated from lidar data clipped to the Difficult Run watershed with a 500-m buffer in ArcGIS 10.3.1 (ESRI, Redlands, CA). The DEM was hydrologically corrected by breaching through pits with no downslope neighboring cells to force surface flow to continuously move downslope using Whitebox Geospatial Analysis Tools (Lindsay and Dhun 2015, Lindsay 2016). Pits that were not properly breached were manually adjusted using elevation information from the DEM and aerial imagery to locate culverts under roadways.

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Attached Files

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Extension: DiffRun_DEM_2012_HydroCond.zip
DiffRun_DEM_2012_HydroCond.tif
“Hydrologically Conditioned DEM”
127.52 MB
DiffRun_DEM_2012_HydroCond.tif-ColorRamp.SLD 2.09 KB

Purpose

Datasets used to quantify and value the ecosystem service of sediment and nutrient retention for floodplains within the Difficult Run watershed located in Fairfax County, Virginia. Geospatial datasets include a digital elevation model (DEM), a hydrologically conditioned DEM, output from the USGS Stream Channel and Floodplain Metric Toolbox, and field data sets used to develop regression models to predict sediment and nutrient retention services for stream within the Difficult Run watershed.

Map

Spatial Services

ScienceBase WMS

ScienceBase WCS

Communities

  • Sustaining Environmental Capital Initiative

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Data source
Input directly

Additional Information

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titleHydrologically Conditioned DEM
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