DamWeir Template

 

Delineation

The limit of DAM/WEIR is the extent of the exposed built-up barrier.

 

Data Extraction

Capture Conditions

 

If DAM/WEIR is earthen, and is named, and is ≥ 0.02" along the shortest axis,

Or

If DAM/WEIR is nonearthen and is named,

Or

If the DAM/WEIR is nonearthen and is ≥ 0.05" along the longest axis,

Then capture.

 

Source Interpretation Guidelines

 

All

If DAM/WEIR with Construction Material = Nonearthen meets capture

conditions, then capture DAM/WEIR and NONEARTHEN SHORE.

 

If a dam/weir does not meet capture conditions,

Then capture only SHORELINE.

 

If DAM/WEIR with Construction Material = Earthen meets capture

conditions, then capture both DAM/WEIR and SHORELINE.

 

If DAM/WEIR covers part of the same area as SPILLWAY, then capture both

DAM/WEIR and SPILLWAY where the features overlap.

 

If DAM/WEIR has an overflow spillway,

Then capture only DAM/WEIR (do not capture as SPILLWAY).

 

SPILLWAY may exist completely apart from the feature DAM/WEIR.

 

If DAM/WEIR meets capture conditions and carries ROAD that meets capture conditions, then capture both DAM/WEIR and ROAD.

 

Do not capture check dams as DAM/WEIR. See EMBANKMENT (Built-up

theme).

 

If a lock and DAM/WEIR share a name, as in "Lock and Dam #6,"

Then only collect the name with DAM/WEIR.

 

If DAM/WEIR is 1-dimensional,then capture NONEARTHEN SHORE or

SHORELINE only for the portion of DAM/WEIR that separates land from

water.

 

Graphic

 

If named earthen dams are shown by contours,

Then capture DAM/WEIR as the area defined by the portion of the shoreline that runs parallel to the squared-off contours and the arbitrary line surrounding the built-up barrier as indicated by the contours.

 

Revision - General

 

Revision - Standard

 

Revision - Limited

 

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