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This dataset was developed to support flow path modeling and identification of opportunities for riparian forest buffer using high-resolution land cover data. |
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This dataset was developed to support flow path modeling and identification of opportunities for riparian forest buffer using high-resolution land cover data. |
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Chesapeake Conservancy, Conservation Innovation Center, Chesapeake Bay Program, University of Vermont Spatial Analysis Laboratory |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>The </SPAN><A href="https://chesapeakeconservancy.org/conservation-innovation-center/high-resolution-data/enhanced-flow-paths/"><SPAN>enhanced flow path dataset</SPAN></A><SPAN> (water network) created from using the Chesapeake Conservancy's </SPAN><A href="https://chesapeakeconservancy.org/wp-content/uploads/2018/07/CIC_Enhanced_Flowpath_Methods_20180703.pdf"><SPAN>flow path analysis methodology</SPAN></A><SPAN>, combining terrain/elevation data and the Chesapeake Conservancy’s high resolution land cover.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>The Lidar-derived digital elevation model (Statewide DCNR PAMAP 2006-2008 - Quality Level 3 LiDAR - 1 meter DEM) was hydro-conditioned (breached and filled) using the open-source software SAGA and ArcGIS Hydrology toolbox. Flow direction and Flow accumulation rasters were calculated to delineate flow paths. An accumulation threshold of 60 acres of upslope land was applied to identify a given pixel as a channel head; anything downstream of that channel head is identified as a flow path. The flow paths were then widened based on the total upslope area and the USGS regional curve equation for the Coastal Plain region of MD and VA. Large rivers and other open water features classified as “water” in the high resolution land cover dataset were added to the widened flow paths dataset. This final integration is the “enhanced flow path dataset.” Follow the link to see the Chesapeake Conservancy's </SPAN><A href="https://chesapeakeconservancy.org/wp-content/uploads/2018/06/PA-Streams-Accuracy-Assessment.pdf"><SPAN>PA stream mapping accuracy assessment</SPAN></A><SPAN>.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>The organizations responsible for generating and funding this dataset make no representations of any kind including, but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data. Although every effort has been made to ensure the accuracy of information, errors may be reflected in data supplied. The user must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other condition. Secondary distribution must be accompanied by this documentation. Credit should always be given to the data source when this data is transferred, altered, or used for analysis.</SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN>Results should be ground-truthed using local knowledge through stakeholder and landowner participation, as the data is not intended to provide site-specific engineering/project design.</SPAN></P></DIV></DIV></DIV> |
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cic_efp_Adam42001Copy.tif |
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["Flow Path","Land Cover","Riparian Buffer","Chesapeake Conservancy","Chesapeake Bay","Pennsylvania"] |
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en-US |
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150000000 |
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