# Detection of Surface Water and Floods with Multispectral Satellites
## 3 Multispectral Indices for Water Segmentation
\begin{table}
\begin{tabular}{c c} \hline \hline
**Satellite/Sensor** & \\ \hline \multirow{6}{*}{Landsat (MSS, TM, ETM+, and OLI)} & [PERSON] and [PERSON] [72]; [PERSON] et al. [98]; [PERSON] et al. [62]; [PERSON] and [PERSON] [43]; [PERSON] [61]; [PERSON] et al. [65]; [PERSON] and [PERSON] [90]; [PERSON] and [PERSON] [68]; [PERSON] et al. [75]; [PERSON] and [PERSON] [73]; [PERSON] et al. [79]; [PERSON] et al. [44]; [PERSON] et al. [46]; [PERSON] et al. [100]; [PERSON] et al. [82]; [PERSON] \\ \cline{1-1}  & [101]; [PERSON] et al. [47]; [PERSON] et al. [41]; [PERSON] et al. [102]; [PERSON] et al. [57]; [PERSON] \\ \cline{1-1}  & [78]; [PERSON] and [PERSON] [84]; [PERSON] et al. [95]; [PERSON] et al. [45]; [PERSON] et al. [89]; [PERSON] et al. [58]; [PERSON] et al. [67]; [PERSON] and [PERSON] [93]; [PERSON] et al. [92]; [PERSON] et al. [42]; [PERSON] and [PERSON] [72]; [PERSON] et al. [94]; [PERSON] et al. [90]. \\ \hline \multirow{6}{*}{MODIS (Aqua/Terra)} & [PERSON] et al. [52]; [PERSON] et al. [50]; [PERSON] et al. [60]; [PERSON] et al. [49]; [PERSON] et al. [66]; [PERSON] et al. [80]; [PERSON] et al. [85]; [PERSON] et al. [51]; [PERSON] et al. [63]; [PERSON] et al. [48]; [PERSON] et al. [96]; [PERSON] et al. [59]; [PERSON] et al. [97]. \\ \hline \multirow{2}{*}{Sentinel-2 (MSI)} & [PERSON] et al. [53]; [PERSON] and [PERSON] [64]; [PERSON] et al. [54]; [PERSON] et al. [55]; [PERSON] and [PERSON] [103]; [PERSON] [56]; [PERSON] et al. [9]. \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Sample of references, in chronological order, for flooded area and wetland inundamping using Landsat, MODIS, or Sentinel-2 images. NDWI, i.e., an increasing use of Landsat and Sentinel-2 (pink and green lines, respectively) and a decreasing interest in spectral indices for MODIS (blue line) since 2015. Table 3 illustrates the indices selected after an in-depth screening of the available documents. For each index reported in the table, both the general formula with the original bands composition from the authors that first proposed it and the specific formula for each selected sensor are provided. \begin{table}
\begin{tabular}{c c c c c c c} \hline  & **NDWI** & **NDWI** & **NDMI** & **MNDWI** & **WRI** & **MNDWI7** \\ \hline \multirow{6}{*}{**Reference**} & **Reference** & [PERSON] et al. [33] & [PERSON] [34] & [PERSON] [104] & [PERSON] [26] & [PERSON] and [PERSON] [107] & [PERSON] et al. [106] \\ \cline{2-7}  & \(\frac{NIE-RED}{NIE+RED}\) & \(\frac{GERN-NIE}{NIE+RED}\) & \(\frac{NIE-SWIE}{NIE+RED}\) & \(\frac{GERN-SWIE}{NIE+RED}\) & \(\frac{GERN-SWIE}{NIE+RED}\) & \(\frac{GERN-SWIE}{NIE+RED}\) \\ \cline{2-7}  & **Landsat** & **5-TM** & **64-10** & **62-61** & **64-75** & **62-65** & **63-65** & **64-75** \\  & **7-ETM+** & & & & & & \\ \cline{2-7}  & **Landsat** & **5-TM** & **64-10** & **64-10** & **62-61** & **64-75** & **64-75** & **64-75** \\  & **7-ETM+** & & & & & & \\ \cline{2-7}  & **Landsat** & **5-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** \\  & **8-OLI** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** \\ \cline{2-7}  & **Sentinel-2** & **5-84** & **55-88** & **55-88** & **55-81** & **55-18** & **55-18** & **55-18** \\  & **MSI** & **55-81** & **55-88** & **55-88** & **55-81** & **55-18** & **55-18** & **55-18** \\ \cline{2-7}  & **Terza-Aqua** & **5-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** & **55-18** \\  & **MODIS** & **55-74** & **55-72** & **55-75** & **55-75** & **55-75** & **55-75** & **55-75** \\ \hline \multicolumn{7}{c}{**AWELish**} & **AWELish** \\ \cline{2-7}  & **Reference** & **[PERSON] et al. [105] & **[PERSON] et al.