Includes identifiers, location, and geometry for the calculated watersheds (WS) and network watersheds (NWS).
| Variable name | Variable description | Units |
| lagoslakeid | unique lake identifier developed by LAGOS-US | |
| ws_zoneid | unique WS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid | |
| nws_zoneid | unique NWS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid | |
| ws_subtype | watershed subtype class for the watershed; LC equals local catchment, DWS equals drainage-watershed, IDWS equals inter-drainage-lake watershed | |
| ws_equalsnws | flag indicating that the ws is equivalent to the nws | |
| ws_onlandborder | flag indicating zone is adjacent to or crosses the border with Canada or Mexico | |
| ws_oncoast | flag indicating the zone is adjacent to an ocean or Great Lakes coast | |
| ws_inusa_pct | percent of the zone polygon that is within the US border | percent |
| ws_includeshu4inlet | flag indicating the WS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4 | |
| ws_ismultipart | flag indicating that the focal zone polygon is multipart | |
| ws_sliverflag | flag indicating extreme cases where the watershed is comprised of slivers due to flat or constrained terrain that may not accurately reflect surface drainage | |
| nws_onlandborder | flag indicating zone is adjacent to or crosses the border with Canada or Mexico | |
| nws_oncoast | flag indicating the zone is adjacent to an ocean or Great Lakes coast | |
| nws_inusa_pct | percent of the zone polygon that is within the US border | percent |
| nws_includeshu4inlet | flag indicating the NWS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4 | |
| nws_ismultipart | flag indicating that the focal zone polygon is multipart | |
| ws_states | two-letter postal abbreviations of all states intersecting the zone polygon | |
| ws_focallakewaterarea_ha | surface area of focal lake for which the WS is calculated | hectare |
| ws_area_ha | area of zone polygon | hectare |
| ws_perimeter_m | perimeter of zone polygon including perimeter of any internal holes | meter |
| ws_lake_arearatio | ratio between WS area and lake water area | |
| ws_mbgconhull_length_m | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the WS polygon | meter |
| ws_mbgconhull_width_m | the maximum width of the WS convex hull polygon along an axis perpendicular to the axis defined by the convex hull length | meter |
| ws_mbgconhull_orientation_deg | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north | degree |
| ws_meanwidth_m | mean width of the WS polygon; calculated as ws_area_ha converted to hectares and divided by ws_mbgconhull_length_m | meter |
| ws_lat_decdeg | latitude of the focal lake central point in decimal degrees; NAD83 projection | decimaldegree |
| ws_lon_decdeg | longitude of the focal lake central point in decimal degrees; NAD83 projection | decimaldegree |
| nws_states | two-letter postal abbreviations of all states intersecting the zone polygon | |
| nws_focallakewaterarea_ha | surface area of focal lake for which the NWS is calculated | hectare |
| nws_area_ha | area of zone polygon | hectare |
| nws_perimeter_m | perimeter of zone polygon including perimeters of any internal holes | meter |
| nws_lake_arearatio | ratio between NWS area and lake water area | |
| nws_mbgconhull_length_m | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the NWS polygon | meter |
| nws_mbgconhull_width_m | the maximum width of the NWS convex hull polygon along an axis perpendicular to the axis defined by the convex hull length | meter |
| nws_mbgconhull_orientation_deg | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north | degree |
| nws_meanwidth_m | mean width of the NWS polygon; calculated as nws_area_ha converted to hectares and divided by nws_mbgconhull_length_m | meter |
| nws_lat_decdeg | latitude of the focal lake central point in decimal degrees; NAD83 projection | decimal degree |
| nws_lon_decdeg | longitude of the focal lake central point in decimal degrees; NAD83 projection | decimal degree |