Derived Flood Assessment

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Derived Flood Assessment 9 June 2021 PRELIMINARY SATELLITE- DERIVED FLOOD ASSESSMENT Guyana Status: Water increase of several rivers Further action(s): continue monitoring GUYANA AREA OF INTEREST (AOI) 9 June 2021 REGION AOI 1 AOI 4 AOI 2 AOI 3 FLOODS OVER GUYANA N 120 km Region 1 AOI 1 Region 2 AOI 2 Region 3 Region 4 Region 7 Region 5 AOI 4 Region 10 Region 8 Satellite detected water AOI 3 as of 6 June 2021 Legend Region boundary International boundary River Region 6 Satellite detected water as of 06 June 2021 [Joint ABI/VIIRS] Region 9 Cloud mask Area of interest Background: ESRI Basemap 3 Image center: AOI 1-1 Region 2 / Pomeroon-Supenaam 58°50'51.244"W 7°36'19.174"N Water increase along the Moruka river BEFORE AFTER Moruka river Creek Water increase observed N 2 km Sentinel-1 / 1 May 2021 Sentinel-1 / 6 June 2021 4 Image center: AOI 1-2 Region 2 / Pomeroon-Supenaam 58°31'33.969"W 7°14'21.714"N Inundated agricultural area BEFORE AFTER Inundated agricultural area N 3 km Sentinel-1 / 1 May 2021 Sentinel-1 / 6 June 2021 5 Image center: AOI 2-1 Region 3 / Essequibo Islands-West Demerara 58°11'22.3"W 6°47'5.596"N Inundated agricultural area BEFORE AFTER Georgetown Georgetown Inundated agricultural area N 1 km Sentinel-1 / 1 May 2021 Sentinel-1 / 6 June 2021 6 Image center: AOI 2-2 Region 4 / Demerara-Mahaica and 5 / Mahaica Berbice 57°44'15.584"W 6°14'15.754"N Inundated agricultural area along the Mahaica, Mahaicony and Abary rivers BEFORE AFTER Mahaica river Water increase observed river Abary Mahaicony river N 1 km Sentinel-1 / 1 May 2021 Sentinel-1 / 6 June 2021 7 Image center: AOI 3-1 Region 10 / Upper Demerara-Berbice 58°4'42.178"W 5°16'11.555"N Potentially affected structures observed along the Berbice river BEFORE AFTER Water increase Potentially affected structures Kwakwani town N 200 m Sentinel-2 / 18 Mar 2021 Sentinel-2 / 6 June 2021 8 Image center: AOI 3-2 Region 10 / Upper Demerara-Berbice 58°17'27.792"W 6°0'12.697"N No floods observed along the Demerara river BEFORE AFTER Linden town Linden town Blue Lake Blue Lake Linden Linden N 300 m Sentinel-1 / 1 May 2021 Terra SAR-X / 8 June 2021 9 Image center: AOI 4-1 Region 7 / Cuyuni-Mazaruni 59°24'33.968"W 6°16'50.952"N Floods observed upstream of Peters Mine hamlet BEFORE AFTER Water increase observed Water increase observed Peters Mine 300 m Sentinel-1 / 1 May 2021 Sentinel-1 / 6 June 2021 10 Image center: AOI 4-2 Region 7 / Cuyuni-Mazaruni 59°45'47.376"W 6°47'59.959"N No floods observed along the Rio Cuyuni river BEFORE AFTER Rio Cuyuni river Rio Cuyuni river Aurora Aurora 1 km Sentinel-1 / 6 May 2021 RCM-2/ 8 June 2021 11 SUMMARY OF FINDINGS • Inundated agricultural fields observed in the coastal Regions (2, 3, 4 & 5) north-east of Guyana as of 06 June 2021; • Increased water level of the Moruka river, Pomeroon-Supenaam (Region 2) as of 06 June 2021; • Potentially affected structures observed along the Berbice river in Kwakwani town, Upper Demerara-Berbice Region as of 06 June 2021; • No floods observed along the Demerara and the Rio Cuyuni rivers, Regions 7 & 10 as of 08 June 2021; • Floods observed upstream of Peters Mine hamlet, Cuyuni-Mazaruni Region as of 06 June 2021. 12 COPYRIGHTS AND SOURCES Data sources: (3) Ancillary data (1) Satellite Image (Post-event) Administrative boundaries: Guyana Lands and Surveys Commission, Sentinel-1 & Sentinel-2 / 06 June 2021 HDX Copyright: Contains modified Copernicus Sentinel Data [2021] Populated places: OpenStreetMap Source: ESA Waterways: OpenStreetMap TerraSAR-X / 08 June 2021 Analysis: UNITAR-UNOSAT Copyright: © DLR e.V. (2021), Distribution Airbus DS Geo GmgH Production: UNITAR-UNOSAT Source: DLR RCM-2/ 08 June 2021 Copyright: RADARSAT Constellation Mission Imagery © Government of Canada (2021) Source: CSA / RCM-2 (2) Satellite Image (Pre-event) Sentinel-1 / 01 and 06 May 2021 & Sentinel-2 / 18 Mar 2021 Copyright: Contains modified Copernicus Sentinel Data [2021] Source: ESA ESRI Basemap 13 @UNOSAT @UNITAR.unosat UNOSAT, United Nations Institute for Training T +41 022 917 4720 and Research (UNITAR) E [email protected] 7 bis, Avenue de la Paix, CH-1202 Geneva 2, www.unosat.org Switzerland.
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