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This feature class contains line that depict the distribution of Groundwater Features Groundwater on the Features Map of Chatham County.
Inferred diabase dike – A line representing the interpreted location of a diabase dike is provided when the distribution of diabase points and/or topography implies the presence of a mappable dike. The location of the line is an approximation and should be confirmed by a site-specific field investigation. The orientation of diabase dikes can vary. Most are near-vertical, but some have dips as low as 45 degrees have been observed. As such, the surface trace does not necessarily match the subsurface location. When attempting to intersect a diabase dike to improve potential well yield, knowledge of the subsurface orientation of the diabase dike is needed. Diabase dikes can dip in any direction. Inferred brittle fault - A line representing the interpreted location of a brittle fault is provided when geologic units abruptly end (truncated) and/or topography implies the presence of a mappable fault. The location of the line is an approximation and should be confirmed by a site-specific field investigation. On the map, a fault is designated as a line; however, a fault will have a zone of fractured rock on either side of the fault line – called a fault zone or damage zone. Faults can vary widely in length and width. Major brittle faults can extend for miles and have fault zones that are 100’s to 1000’s of feet wide. Smaller faults can extend for inches to 100’s of feet. The general rule-of-thumb is an area that has a brittle fault is likely to have more fractures in the bedrock than a location away from the fault. Also, there is typically a decrease in the intensity of bedrock fractures as one moves farther away from the fault.
Linear geomorphic feature interpreted from hillshade LiDAR - A lineament is a linear (relatively straight) topographic feature. A naturally occurring lineament usually reflects characteristics of the underlying rocks. LiDAR elevation data for... |
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This feature class contains line that depict the distribution of Groundwater Features Groundwater on the Features Map of Chatham County.
Inferred diabase dike – A line representing the interpreted location of a diabase dike is provided when the distribution of diabase points and/or topography implies the presence of a mappable dike. The location of the line is an approximation and should be confirmed by a site-specific field investigation. The orientation of diabase dikes can vary. Most are near-vertical, but some have dips as low as 45 degrees have been observed. As such, the surface trace does not necessarily match the subsurface location. When attempting to intersect a diabase dike to improve potential well yield, knowledge of the subsurface orientation of the diabase dike is needed. Diabase dikes can dip in any direction. Inferred brittle fault - A line representing the interpreted location of a brittle fault is provided when geologic units abruptly end (truncated) and/or topography implies the presence of a mappable fault. The location of the line is an approximation and should be confirmed by a site-specific field investigation. On the map, a fault is designated as a line; however, a fault will have a zone of fractured rock on either side of the fault line – called a fault zone or damage zone. Faults can vary widely in length and width. Major brittle faults can extend for miles and have fault zones that are 100’s to 1000’s of feet wide. Smaller faults can extend for inches to 100’s of feet. The general rule-of-thumb is an area that has a brittle fault is likely to have more fractures in the bedrock than a location away from the fault. Also, there is typically a decrease in the intensity of bedrock fractures as one moves farther away from the fault.
Linear geomorphic feature interpreted from hillshade LiDAR - A lineament is a linear (relatively straight) topographic feature. A naturally occurring lineament usually reflects characteristics of the underlying rocks. LiDAR elevation data for... |
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This digital database was prepared by the North Carolina Geological Survey. Bradley, P.J. and Bolich, R.E., 2022, Groundwater features map of Chatham County and surrounding areas, North Carolina: North Carolina Geological Survey Open-file Report 2022-04, scale 1:50,000, in color. |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class contains lines that depict the distribution of Groundwater Features Groundwater Features on the Groundwater Features Map of Chatham County.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Not for use at scales larger than 1:24,000 or at scales larger than the LocationConfidenceMeters field. Refer to field name: LocationConfidenceMeters in each featureclass for numerical value of approximate location confidence. </SPAN></SPAN><SPAN><SPAN>The North Carolina Geological Survey (NCGS) is committed to offering its users accurate, useful, and current information. Although every effort has been made to ensure the accuracy of information it provides, the NCGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. The information contained in these data is dynamic and may change over time. Earlier versions of this data set may exist. The client 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 conditions specific to certain data. </SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>The NCGS gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are acquired directly from an NCGS source and not indirectly through other sources which may have modified the data in some way. </SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Although these data have been processed successfully on computer systems at the NCGS, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. The use of trade names or commercial products does not constitute their endorsement by the NCGS.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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Groundwater Features Map of Chatham County - Lines |
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["Groundwater Features","digital compilation","North Carolina","Chatham County","NC DEQ","DEMLR"] |
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en-US |
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500000 |
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