Definition: | unique lake identifier developed by LAGOS-US | unique WS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid | unique NWS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid | watershed subtype class for the watershed; LC equals local catchment, DWS equals drainage-watershed, IDWS equals inter-drainage-lake watershed | flag indicating that the ws is equivalent to the nws | flag indicating zone is adjacent to or crosses the border with Canada or Mexico | flag indicating the zone is adjacent to the coastline | percent of the zone polygon that is within the US border | flag indicating the WS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4 | flag indicating that the focal zone polygon is multipart | flag indicating extreme cases where the watershed is comprised of slivers due to flat or constrained terrain that may not accurately reflect surface drainage | flag indicating an error that applies to a small subset of watersheds that erroneously include in the WS polygon an upstream lake with only in inlet that is greater than or equal to 10 ha, along with its respective WS | flag indicating an error that applies to a small subset of watersheds when the presence of a second lake greater than or equal to 10ha located below a common network divergence led to the erroneous erasure of an overlapping watershed area upstream of that divergence from the focal lake watershed | flag indicating an error that applies to a small subset of watersheds when the presence of a second lake greater than or equal to 10ha located below a common network divergence led to the erroneous erasure of an overlapping watershed area upstream of that divergence from the focal lake network watershed | flag indicating zone is adjacent to or crosses the border with Canada or Mexico | flag indicating the zone is adjacent to the coastline | percent of the zone polygon that is within the US border | flag indicating the NWS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4 | flag indicating that the focal zone polygon is multipart | two-letter postal abbreviations of all states intersecting the zone polygon | surface area of focal lake for which the WS is calculated | area of zone polygon | perimeter of zone polygon including perimeter of any internal holes | ratio between WS area and lake water area | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the WS polygon | the maximum width of the WS convex hull polygon along an axis perpendicular to the axis defined by the convex hull length | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north | mean width of the WS polygon; calculated as ws_area_ha converted to hectares and divided by ws_mbgconhull_length_m | latitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection | longitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection | two-letter postal abbreviations of all states intersecting the zone polygon | surface area of focal lake for which the NWS is calculated | area of zone polygon | perimeter of zone polygon including perimeters of any internal holes | ratio between NWS area and lake water area | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the NWS polygon | the maximum width of the NWS convex hull polygon along an axis perpendicular to the axis defined by the convex hull length | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north | mean width of the NWS polygon; calculated as nws_area_ha converted to hectares and divided by nws_mbgconhull_length_m | latitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection | longitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection |
Measurement Values Domain: | Unit | number | Type | natural | Min | 1 | Max | 483495 |
| Definition | unique WS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid |
| Definition | unique NWS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid |
| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | DWS | Definition | the WS is equivalent to the drainage watershed, defined as the area of land that directly drains into the focal lake combined with the area of land draining into all upstream-connected lakes and streams | Source | |
| Code Definition | Code | IDWS | Definition | the WS is equivalent to the inter-drainage-lake watershed, defined as the area of land that directly drains into the focal lake combined with the area of land that drains into upstream connected streams and lakes less than 10 ha; IDWS accumulation stops at the outlet of any connected lakes larger than 10 ha | Source | |
| Code Definition | Code | LC | Definition | the WS is equivalent to the local catchment, defined as the area of land that directly drains into the focal lake. | Source | |
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| Unit | percent | Type | real | Min | 0 | Max | 100 |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | NULL | Definition | lake does not have a NWS | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | NULL | Definition | lake does not have a NWS | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | NULL | Definition | lake does not have a NWS | Source | |
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| Definition | percent of the zone polygon that is within the US border |
| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | NULL | Definition | lake does not have a NWS | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | NULL | Definition | lake does not have a NWS | Source | |
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| Definition | two-letter postal abbreviations of all states intersecting the zone polygon |
| Unit | hectare | Type | real | Min | 1.000008 | Max | 338950.2 |
| Unit | hectare | Type | real | Min | 0.000911658 | Max | 7712449 |
| Unit | meter | Type | real | Min | 12.48364 | Max | 7904472 |
| Unit | number | Type | real | Min | 1.06e-05 | Max | 1831464 |
| Unit | meter | Type | real | Min | 4.556192 | Max | 590490 |
| Unit | meter | Type | real | Min | 2.552874 | Max | 305138.5 |
| Unit | degree | Type | real | Min | 0 | Max | 179.9726 |
| Unit | meter | Type | real | Min | 0.06134753 | Max | 154154.7 |
| Unit | degree | Type | real | Min | 24.95558 | Max | 49.37423 |
| Unit | degree | Type | real | Min | -124.6878 | Max | -66.99847428 |
| Definition | two-letter postal abbreviations of all states intersecting the zone polygon |
| Definition | surface area of focal lake for which the NWS is calculated |
| Definition | area of zone polygon |
| Definition | perimeter of zone polygon including perimeters of any internal holes |
| Definition | ratio between NWS area and lake water area |
| Definition | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the NWS polygon |
| Definition | the maximum width of the NWS convex hull polygon along an axis perpendicular to the axis defined by the convex hull length |
| Definition | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north |
| Definition | mean width of the NWS polygon; calculated as nws_area_ha converted to hectares and divided by nws_mbgconhull_length_m |
| Definition | latitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection |
| Definition | longitude of the centroid of the focal lake polygon in decimal degrees; NAD83 projection |
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