VBET Metrics

DGO/IGO Fields

Field	Data Type	Units	Description
level_path*	TEXT	N/A	Unique identifier for a given stream from where it begins to where it ends
seg_distance	REAL	Meters	Distance along a given level_path. The combination of level path and seg_distance uniquely identifies a DGO/IGO
segment_area	REAL	Square meters	Area of the DGO
centerline_length	REAL	Meters	Length of the centerline of the DGO/analysis window
window_area	REAL	Square meters	Area of the analysis window (a group of DGOs)
FCode*	INTEGER	N/A	A code representing the flow type (e.g., perennial, intermittent, ephemeral) for the main flowline within the DGO/analysis window

* These fields are NHD fields that are used by default, but in custom runs that utilize different datasets, can be substituted for other field names.

Metrics

The following metrics are calculated individually for each DGO polygon and/or within an analysis window (comprised of several DGOs) and attributed to the corresponding IGO point.

Field	Metric	Data Type	Units	Description
active_channel_area	Active Channel Area	REAL	Square meters	Total area of active channel within the DGO/analysis window
active_channel_prop(ortion)	Active Channel Proportion	REAL	Ratio	Proportion of DGO/analysis window that is active channel
floodplain_area	Floodplain Area	REAL	Square meters	Total area of floodplain (valley bottom - active channel) within the DGO/analysis window
floodplain_prop(ortion)	Floodplain Proportion	REAL	Ratio	Proportion of DGO/analysis window that is floodplain
low_lying_floodplain_area	Low-Lying Floodplain Area	REAL	Square meters	Total area of low-lying floodplain within the DGO/analysis window
low_lying_floodplain_prop(ortion)	Low-Lying Floodplain Proportion	REAL	Ratio	Proportion of DGO/analysis window that is topographically low-lying floodplain
elevated_floodplain_area	Elevated Floodplain Area	REAL	Square meters	Total area of elevated Floodplain within the DGO/analysis window
elevated_floodplain_prop(ortion)	Elevated Floodplain Proportion	REAL	Ratio	Proportion of DGO/analysis window that is elevated floodplain
integrated_width	Integrated Width	REAL	Meters	Integrated width calculated as window_area / centerline length (average width of the DGO/analysis window)
active_channel_itgr_width	Active Channel Integrated Width	REAL	Meters	Active channel area divided by centerline length within the DGO/analysis window (average width of active channel)
floodplain_itgr_width	Floodplain Integrated Width	REAL	Meters	Floodplain area divided by centerline length within the DGO/analysis window (average width of floodplain)
vb_acreage_per_mile	Valley Bottom Acreage per Mile	REAL	acres/mile	Window area converted to acres and divided by centerline length converted to miles
vb_hectares_per_km	Valley Bottom Hectares per Kilometer	REAL	hectares/km	Window area converted to hectares and divided by centerline length converted to kilometers
low_lying_floodplain_itgr_width	Low-Lying Floodplain Integrated Width	REAL	Meters	Low-lying floodplain area divided by centerline length within the DGO/analysis window (average width of low-lying floodplain)
elevated_floodplain_itgr_width	Elevated Floodplain Integrated Width	REAL	Meters	Elevated floodplain area divided by centerline length within the DGO/analysis window (average width of elevated floodplain)
low_lying_acreage_per_mile	Low-Lying Acreage per Mile	REAL	acres/mile	Low-lying floodplain area converted to acres and divided by centerline length converted to miles
low_lying_hectares_per_km	Low-Lying Hectares per Kilometer	REAL	hectares/km	Low-lying floodplain area converted to hectares and divided by centerline length converted to kilometers
elevated_acreage_per_mile	Elevated Acreage per Mile	REAL	acres/mile	Elevated floodplain area converted to acres and divided by centerline length converted to miles
elevated_hectares_per_km	Elevated Hectares per Kilometer	REAL	hectares/km	Elevated floodplain area converted to hectares and divided by centerline length converted to kilometers