Sample Sidebar Module

This is a sample module published to the sidebar_top position, using the -sidebar module class suffix. There is also a sidebar_bottom position below the menu.

Sample Sidebar Module

This is a sample module published to the sidebar_bottom position, using the -sidebar module class suffix. There is also a sidebar_top position below the search.

Landslide Map

Landslide VA aims to identify the physical and social elements at risk. Quantifying the vulnerability of sectoral assets illustrates the proportion of assets that are located in hazard prone areas. This provides understanding about the stock of asset which may be vulnerable to different landslide hazard severity. The assessment provides information to policy makers, decision makers and planners about assets which may need mitigation intervention. Nevertheless it does not characterize the performance of assets on varying hazard intensities. Thus EA aims to initiate the process of the (Vulnerability and Risk Assessment) VRA.

The impact profiles of hazards on different assets are distinctive; they vary depending upon the characteristics of the sectoral assets. For example landslide primarily affect physical infrastructure, followed by other secondary sectors. The project aims to estimate primary physical infrastructure including housing, education, health, and transport systems. Apart from these, the population is also considered for landslide impacts. Population is further classified by gender (male and female). There are other sectors which are impacted by landslides however the effects are comparatively low and therefore not considered in this study.

Landslide vulnerability assessment helps to provide information, which could be used to protect population and to improve settlement planning, housing sector, infrastructure, and transportation sector. The landslide exposure assessment is limited to the exposure analysis of the following elements at risk: population, housing, health facilities, schools, roads, and agriculture.

The landslide hazard assessment has developed landslide risk maps, which classifies landslide into five risk classes (very high, high, moderate, low and very low). In this landslide vulnerability assessment only moderate, high and very high risk classes are included in the analysis. The two other classes (low and very low) were not included as landslides are less likely to occur at these levels.

How to Read the Map

The landslide hazard map show spatial distribution of risk zones. Colours from green to red indicate the risk classes from very low to very high. The figure below illustrates the colours that are used to indicate the different risk zones from the qualitative assessment of landslide hazard.

Hazard

Descriptor

Description

Very Low

Rare

The event is conceivable, but only under exceptional circumstances

Low

Unlikely

The event might occur under very adverse circumstances

Moderate

Possible

The event could occur under adverse conditions

High

Likely

The event will probably occur under adverse conditions

Very High

Almost certain

The event is expected to occur

A list of communities exposed to landslide at high susceptibility is present in the table below

Population vulnerable to landslide at moderate risk

District

Male

Female

Total

Percentage of Population

District Population

Bo

57,060

59,325

116,385

20.2

575,478

Bombali

147,578

154,105

301,683

49.7

606,544

Bonthe

19,218

20,250

39,468

19.7

200,781

Kailahun

60,791

61,676

122,467

23.3

526,379

Kambia

27,617

28,942

56,559

16.4

345,474

Kenema

114,908

118,380

233,288

38.3

609,891

Koinadugu

73,205

73,460

146,665

35.8

409,372

Kono

120,196

120,825

241,021

47.6

506,100

Moyamba

39,497

42,918

82,415

25.9

318,588

Port Loko

100,847

107,223

208,070

33.8

615,376

Pujehun

81,339

85,694

167,033

48.2

346,461

Tonkolili

119,469

122,893

242,362

45.6

531,435

Western Area Rural

150,742

152,594

303,336

68.3

444,270

Western Area Urban

151,242

153,039

304,281

28.8

1,055,964

National

1,263,709

1,301,324

2,565,033

36.2

7,092,113

Population vulnerable to landslide at moderate risk