SIERRA LEONE

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Aug 16, 2017 - ... T: +41 22 767 4020 (UNOSAT Operations) - Hotline 24/7: +41 75 411 4998 - [email protected] .... 15 Au
SIERRA LEONE

A Æ

Regent

FL20170815SLE

Imagery analysis: 15 August 2017 | Published 16 August 2017 | Version 1.0 13°15'30"W

13°15'15"W

13°15'0"W

Flood

13°14'45"W

Hill Station

13°14'30"W

13°14'15"W

13°14'0"W

13°13'45"W

INSET: 15 August 2017

INSET: 03 March 2017

Freetown

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Leicester

8°27'0"N

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West III

8°26'45"N

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Western Area Urban

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Mudflow

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Western Area

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Juba/Kaningo

Mountain Rural

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Western Area Rural

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Legend

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City/Town Village/Locality

Chiefdoms / Counties

Mudflow District boundary 8°26'0"N

Chiefdom boundary

Map Scale for A3: 1:11,000 200

300

Gbendembu

York Rural Potentially affected

Affected road

100

on

See inset for close-up view of landslide impact

Primary road Secondary/Local road

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400

Meters

500

Analysis conducted with ArcGIS v10.4.1 Coordinate System: WGS 1984 UTM Zone 28N Projection: Transverse Mercator Datum: WGS 1984 Units: Meter

Mountain Rural Regent West III Juba/Kaningo Malama/Kamayama Total 13°15'30"W

Satellite Data (1): GeoEye-1 Imagery Dates: 15 August 2017 Resolution: 50 cm Copyright: DigitalGlobe, Inc. Source: USGS-HDDS

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buildings 192 192 157 87 70 349

13°15'15"W

Satellite Data (2): Worldview-3 Imagery Date: 03 March 2017 Resolution: 50 cm Copyright: DigitalGlobe, Inc. Source: USGS-HDDS

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Goderich-Adonkia/M

8°26'0"N

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Flow direc ti

8°26'15"N

Affected buildings

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Regent 8°26'30"N

8°26'45"N

This map illustrates satellite-detected landslides and mudflow that affected Regent area south eastern Freetown using a GeoEye-1 acquired the 15 August 2017 compared with a pre-crisis image acquired the 03 March 2017. UNOSAT extracted areas affected by the landslide and subsequent mudflow and could identify 349 damaged structure and 1.3 km of damaged roads within the analysed area. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR /UNOSAT.

Malama/Kamayama

8°26'30"N

Potentially Affected Zones by the Mudflow in southeastern Freetown, Sierra Leone

Mirimboe

8°26'15"N

SIERRA LEONE

8°27'0"N

Map location

Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community 13°15'0"W

13°14'45"W

Road Data : OpenStreetMap / HDX Other Data: USGS, UNCS, NASA, NGA Analysis : UNITAR - UNOSAT Production: UNITAR - UNOSAT

13°14'30"W

13°14'15"W

13°14'0"W

13°13'45"W

The depiction and use of boundaries, geographic names and related data shown here are not warranted to be error-free nor do they imply official endorsement or acceptance by the United Nations. UNOSAT is a program of the United Nations Institute for Training and Research (UNITAR), providing satellite imagery and related geographic information, research and analysis to UN humanitarian & development agencies & their implementing partners. This work by UNITAR-UNOSAT is licensed under a CC BY-NC 3.0.

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