Are Feature Agreement Statistics Alone Sufficient to Validate Modelled Flood Extent Quality? A Study on Three Swedish Rivers Using Different Digital Elevation Model Resolutions

Table 4

Performance scores of most optimal DEM resolutions (with associated roughness in small font) for the Voxna river, together with inundation areas and the percent differences in size from the reference data.

Res. (m)	and
	Max. score  |	Flood area (km^2)	% diff.	Max. score	Flood area (km^2)	% diff.	Max. score	Flood area (km^2)	% diff.
3	0.8230.080 | 0.6460.080	5.410	8.80	0.7390.030	4.331	−12.91	0.7870.090	5.585	12.33
4	0.8230.080 | 0.6470.080	5.457	9.75	0.7340.040	4.479	−9.92	0.7870.090	5.605	12.72
5	0.8430.080 | 0.6870.080	5.303	6.65	0.7630.050	4.410	−11.31	0.8020.080	5.303	6.65
10	0.8500.040 | 0.7000.040	5.241	5.40	0.750.030	5.086	2.29	0.8070.040	5.241	5.40
15	0.8410.040 | 0.6820.040	5.263	5.84	0.7380.020	5.051	1.59	0.8050.060	5.550	11.61
20	0.8430.030 | 0.6850.030	5.176	4.10	0.7440.020	5.040	1.35	0.8030.040	5.339	7.37
25	0.8230.020 | 0.6550.020	5.300	6.59	0.7150.010	5.154	3.65	0.7900.030	5.438	9.36
50	0.8280.010 | 0.6570.010	5.407	8.73	0.6970.010	5.407	8.73	0.7940.030	5.556	11.73