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  2. Sustaining Environmental Capital Initiative
  3. Difficult Run Floodplain Sediment and Nutrient Retention Ecosystem Service Datasets, Fairfax County, Virginia
  4. Hydrologically Conditioned Digital Elevation Model of the Difficult Run watershed in Fairfax County, Virginia Derived from 2012 lidar LAS Points

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.

Contacts

Point of Contact :
Kristina G Hopkins
Originator :
Kristina G. Hopkins, Marina J Metes, Gregory Noe, Peter R Claggett
Metadata Contact :
Kristina G Hopkins
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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HydroConditioned_DEM_MetaData.xml
“Metadata”
Original FGDC Metadata
View 		10.39 KB application/fgdc+xml
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.

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  • Sustaining Environmental Capital Initiative

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Additional Information

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minX-77.39326337544219
maxY39.01552436478235
maxX-77.21239634578711
files
nameDiffRun_DEM_2012_HydroCond.tif
titleHydrologically Conditioned DEM
contentTypeimage/geotiff
pathOnDisk__disk__35/68/e7/3568e74787e14028ca8a1a6a1fcfd9d9ca114108
size133710187
dateUploadedMon Apr 30 06:32:41 MDT 2018
nameDiffRun_DEM_2012_HydroCond.tif-ColorRamp.SLD
contentTypeapplication/sld+xml
pathOnDisk__disk__4a/4a/ec/4a4aeceaef6f604c80e331683c5872c047ffa5c4
size2140
dateUploadedMon Apr 30 06:36:49 MDT 2018
nameDiffRun_DEM_2012_HydroCond
nativeCrsEPSG:32618
rasterTypeGeoTIFF

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