lake_watersheds: LAGOSUS Lake watersheds

In cont-limno/LAGOSUS: Interface to the Lake Multi-Scaled Geospatial and Temporal Database

LAGOSUS Lake watersheds

Description

Includes identifiers, location, and geometry for the calculated watersheds (WS) and network watersheds (NWS).

Details

Variable name	Variable name group	Lagosne variable name	Variable description	Units
lagoslakeid	lagoslakeid	lagoslakeid	unique lake identifier developed by LAGOS-US
ws_zoneid	zoneid	iws_zoneid	unique WS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid
nws_zoneid	zoneid		unique NWS watershed identifier assigned by LAGOS-US; identifier is equivalent to the focal lake lagoslakeid
ws_subtype	subtype		watershed subtype class for the watershed; LC equals local catchment, DWS equals drainage-watershed, IDWS equals inter-drainage-lake watershed
ws_equalsnws	equalsnws		flag indicating that the ws is equivalent to the nws
ws_onlandborder	onlandborder		flag indicating zone is adjacent to or crosses the border with Canada or Mexico
ws_oncoast	oncoast		flag indicating the zone is adjacent to an ocean or Great Lakes coast
ws_inusa_pct	inusa_pct	iws_pct_in_usa	percent of the zone polygon that is within the US border	percent
ws_includeshu4inlet	includeshu4inlet		flag indicating the WS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4
ws_ismultipart	ismultipart		flag indicating that the focal zone polygon is multipart
ws_sliverflag	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	onlandborder		flag indicating zone is adjacent to or crosses the border with Canada or Mexico
nws_oncoast	oncoast		flag indicating the zone is adjacent to an ocean or Great Lakes coast
nws_inusa_pct	inusa_pct		percent of the zone polygon that is within the US border	percent
nws_includeshu4inlet	includeshu4inlet		flag indicating the NWS extends beyond the focal HU4 and is connected via an inlet to an adjoining HU4
nws_ismultipart	ismultipart		flag indicating that the focal zone polygon is multipart
ws_states	states		two-letter postal abbreviations of all states intersecting the zone polygon
ws_focallakewaterarea_ha	focallakewaterarea_ha	iws_lakeareaha	surface area of focal lake for which the WS is calculated	hectare
ws_area_ha	area_ha	iws_ha	area of zone polygon	hectare
ws_perimeter_m	perimeter_m	iws_perimkm	perimeter of zone polygon including perimeter of any internal holes	meter
ws_lake_arearatio	lake_arearatio		ratio between WS area and lake water area
ws_mbgconhull_length_m	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	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	mbgconhull_orientation_m		orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north	degree
ws_meanwidth_m	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	lat_decdeg	iws_lat	latitude of the focal lake central point in decimal degrees; NAD83 projection	decimaldegree
ws_lon_decdeg	lon_decdeg	iws_lon	longitude of the focal lake central point in decimal degrees; NAD83 projection	decimaldegree
nws_states	states		two-letter postal abbreviations of all states intersecting the zone polygon
nws_focallakewaterarea_ha	focallakewaterarea_ha		surface area of focal lake for which the NWS is calculated	hectare
nws_area_ha	area_ha		area of zone polygon	hectare
nws_perimeter_m	perimeter_m		perimeter of zone polygon including perimeters of any internal holes	meter
nws_lake_arearatio	lake_arearatio		ratio between NWS area and lake water area
nws_mbgconhull_length_m	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	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	mbgconhull_orientation_m		orientation of the line defining the convex hull length; calculated as decimal degrees clockwise from north	degree
nws_meanwidth_m	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	lat_decdeg		latitude of the focal lake central point in decimal degrees; NAD83 projection	decimal degree
nws_lon_decdeg	lon_decdeg		longitude of the focal lake central point in decimal degrees; NAD83 projection	decimal degree

cont-limno/LAGOSUS documentation built on Aug. 24, 2023, 10:01 a.m.