Hazus: A standardized methodology for flood risk assessment in Canada

Figures & data

Figure 1 (a) Natural disasters in Canada since 1900; (b) frequency of flood disasters [Public Safety Canada (PSC) 2010].

Figure 2 Schematic representation of the hazards, inventory, damage functions, and risks in Hazus. In grey are characteristics of the Hazus Flood model. Characters in bold represent options currently available to Canadian users.

Figure 3 Schematic representation of the hazard parameters for a typical Canadian house with a basement [1st floor in Hazus]. Depth-damage functions are applied to relevant depth of flooding (depth in structure).

Table 1. Census block size in Canada and in the US.

Province, Territory	Population	Area (km^2)	Population/km^2	Census Blocks	Population /Census Block	km^2/Census Block
AB	3,645,257	640,081	5.7	5357	680	119.5
BC	4,400,057	922,509	4.8	7469	589	123.5
MB	1,208,268	552,330	2.2	2152	561	256.7
NB	751,171	71,377	10.5	1439	522	49.6
NL	514,536	370,511	1.4	1062	484	348.9
NS	921,727	52,939	17.4	1633	564	32.4
NT	41,462	1,143,793	0.04	84	494	13,616.6
NU	31,906	1,877,788	0.02	42	760	44,709.2
ON	12,851,821	908,608	14.1	19,177	670	47.4
PE	140,204	5686	24.7	292	480	19.5
QC	7,903,001	1,356,547	5.8	13,408	589	101.2
SK	1,033,381	588,239	1.8	2431	425	242.0
YT	33,897	474,713	0.1	78	435	6086.1
Canada	33,476,688	8,965,121	3.7	54,624	613	164.1
US	281,421,906	7,663,941	36.7	8,200,000	34	0.9