Includes derived metrics for each lake such as lake geometry (e.g., area, perimeter, shape metrics), lake connectivity (e.g., lake connectivity class, number of upstream lakes), and whether the lake is located within an area that was glaciated during the Late Wisconsin glaciation.
| Variable name | Variable description | Units |
| lagoslakeid | unique lake identifier developed by LAGOS-US | |
| lake_waterarea_ha | surface area of lake waterbody polygon from NHD comprised of open water; islands are excluded | hectare |
| lake_totalarea_ha | total area of the lake waterbody polygon from the NHD; includes combined area of open water and any islands within the outer boundary | hectare |
| lake_islandarea_ha | surface area of any islands contained within the outer boundary of the lake waterbody polygon from NHD | hectare |
| lake_perimeter_m | perimeter of outer boundary of lake waterbody polygon from the NHD; excludes perimeter of any islands | meter |
| lake_islandperimeter_m | perimeter of islands contained within the outer boundary of the lake waterbody polygon from the NHD | meter |
| lake_shorelinedevfactor | shoreline development factor; calculated as lake_perimeter_m divided by the product of 2 times the square root of pi times lake_waterarea_ha | |
| lake_mbgconhull_length_m | the maximum possible distance between any two vertices of the minimum bounding geometry convex hull that encloses the lake polygon | meter |
| lake_mbgconhull_width_m | the maximum width of the lake convex hull polygon along an axis perpendicular to the axis defined by the convex hull length | meter |
| lake_mbgconhull_orientation_deg | orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north | degree |
| lake_mbgrect_length_m | length of the minimum bounding geometry rectangle by area enclosing the lake polygon | meter |
| lake_mbgrect_width_m | width of the minimum bounding geometry rectangle by area enclosing the lake polygon | meter |
| lake_mbgrect_arearatio | ratio between lake_waterarea_ha converted to meters squared and the product of lake_mbgrect_length_m and lake_mbgrect_width_m; values near 1 indicate rectangular lake shape | |
| lake_meanwidth_m | mean width of the lake; calculated as lake_waterarea_ha converted to meters squared divided by lake_mbgconhull_length_m | meter |
| lake_connectivity_class | maximum hydrologic connectivity class of the focal lake determined from the NHD network considering both permanent and intermittent-ephemeral flow | |
| lake_connectivity_fluctuates | indicates whether the lake connectivity classification depends on non-permanent flow | |
| lake_connectivity_permanent | hydrologic connectivity class of the focal lake determined from the NHD network considering only permanent flow | |
| lake_lakes1ha_upstream_ha | total area of lakes greater than or equal to 1 ha upstream of the focal lake, connected via surface streams | hectare |
| lake_lakes4ha_upstream_ha | total area of lakes greater than or equal to 4 ha upstream of the focal lake, connected via surface streams | hectare |
| lake_lakes10ha_upstream_ha | total area of lakes greater than or equal to 10 ha upstream of the focal lake, connected via surface streams | hectare |
| lake_lakes1ha_upstream_n | count of lakes greater than or equal to 1 ha upstream of the focal lake, connected via surface streams | count |
| lake_lakes4ha_upstream_n | count of lakes greater than or equal to 4 ha upstream of the focal lake, connected via surface streams | count |
| lake_lakes10ha_upstream_n | count of lakes greater than or equal to 10 ha upstream of the focal lake, connected via surface streams | count |
| lake_glaciatedlatewisc | glaciation status during the Late Wisconsin glaciation; Glaciated status is assigned if any part of the lake polygon is inside the glacial extent |