Model

Formula

Category

Crisp Threshold to segment standing water

Reference

AWEI

C1 * (GREEN − SWIR1) − (C2 * NIR + C3 * SWIR2)

Water SI

AWEI > 0

[19]

AWEIsh

BLUE + D1 * GREEN – D2 * (NIR + SWIR1) – D3 * SWIR2

Water SI

AWEIsh > 0

[19]

mNDWI

(GREEN – SWIR1)/(GREEN + SWIR1)

Water SI

mNDWI > 0

[23]

NDWI

(GREEN – NIR)/(GREEN + NIR)

Water SI

NDWI > 0

[21]

NDFI

(RED – SWIR2)/(RED + SWIR2)

Flooding SI

NDFI > 0.32

[18]

SAVI

(1 + L) * (NIR – RED)/(NIR + RED + L)

Vegetation SI

SAVI < −0.25 or SAVI < −0.27 (in the present paper we used −0.25)

[20]

WRI

(GREEN + RED)/(NIR + SWIR2)

Water SI

WRI > 1

[41]

HV

f(SWIR2, NIR, RED)

Water indicator

H < (−0.3593 * V) + 360

or

H > (0.0363 * V) + 75.853

or

H > (0.054 * V) + 150.04 and

V < 5500

[22]