#1Presented at the FIG e-Working Week 2021, CHALLENGES IN A NEW REALITY 21-25 June 2021 in Virtually in the Netherlands SMART SURVEYORS FOR LAND AND WATER MANAGEMENT FIGNL eWORKING WEEK 2021 20-25 JUNE Dupe N. OLAYINKA, Nigeria Paper ID-11091 G Assessing Social Vulnerability to Floods and Coping Strategies in Adamawa Catchment, Nigeria. kadaster 22 June, 2021; time: 08:00-09:30 ORGANISED BY FIG G+N Geo-Informatie Nederland ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#2HIGNIL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY INTRODUCTION Flooding is a well-known seasonal problem in Adamawa catchment which usually exposes the people to different risks. More communities are becoming more vulnerable in recent times. Destructive impacts of flooding · • • Disruption of Farming activities Loss of lives and properties Displacement of residents The concept of vulnerability is very important when it comes to issues of flooding and quantification of their impact on man and the environment. ORGANISED BY FIG GIN Geo-Informatie Nederland kadaster 6 ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#3HIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY This study assesses social vulnerability to flooding and coping strategies adopted by the human dwellers in the Adamawa catchment. Participatory Vulnerability Approach (PVA) is used to assess the human dimensions involved in investigating flood vulnerability and coping strategies; data from emergency records kadaster GIN G ORGANISED BY FIG Geo-Informatie Nederland PLATINUM SPONSORS ITC UNIVERSITY Trimble. OF TWENTE. esri THE SCIENCE OF WHERE#4N.0.0.01 N.0.0.6 HIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY STUDY AREA Location Along Upper Benue Drainage Basin Extent Longitude: 11° 46'E-14° 14'E - Latitude: -8° 37'N -9° 41'N N.0.0.91 N.0.0.01 N.0.0.9 איטיסיי10 5°0'0"E 10°0'0"E 15°0'0"E 12°0'0"E 12°30'0"E NIGERIA CATCHMENT NIGER NORTH NIGER CENTRAL WESTERN LITTORAL COWER BENUE NIGER SOUTHEASTERN LITTORAK LAKE CHAD OPPER BENUE 5°00″E 10°0'0"E 15°0'0"E UPPER BENUE RIVER BASIN N.0.06.6 N.0.0.6 Dumbur igawa N W- S Numan Dems a Nasarawa WurfuBomb Bille Bagon Dare Yola Tutare N.0.0.8 0 10 20 40 Km 12°0'0"E PLATINUM SPONSORS Trimble. 8°00″E 10°0'0"E 12°0'0"E 14°0'0"E kadaster GING ORGANISED BY FIG Geo-Informatie Nederland UNIVERSITY OF TWENTE. N.0.0.6 Road Network River Network Airport Settlement Study Area 12°30'0"E esri THE SCIENCE OF WHERE#5FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Data acquisition & compilation METHODS Sampling Technique Causes and Effects ORGANISED BY FIG GIN kadaster Population projection Data processing Livelihood Statistical analysis Data Collection Vulnerability Score Results presentation ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#6HIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY SAMPLING TECHNIQUE A structured questionnaire was used as the instrument for data data collection using a stratified and systematic sampling technique. The investigated area was stratified into seven areas Quadrants was imposed to give five zones for good spatial spread with 237,457 households FIELD SURVEY (Questionnaire) Sampling Stratified ZONE 4 ZONE 3 methods Systematic ZONE 1 ZONE 5 ZONE 2 kadaster ORGANISED BY FIG GIN ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#7HIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY S/N Area Number of No. of Percentage Households Questionnaires (%) 1 Demsa 37,498 67 15.8 2 Fufore 44,025 79 18.6 3 Gombi 29,062 52 12.2 4 Lamurde 19,604 35 8.2 5 Numan 24,062 43 10.1 6 Yola North 41,968 75 17.7 7 Yola South 41,238 74 17.4 Total 237,457 425 100 kadaster GING ORGANISED BY FIG Geo-Informatie Nederland UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE Ranking according to number of households#8FIG WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY DATA COLLECTION • A total of 425 questionnaires were administered to members of the communities. • The questionnaire was designed to retrieve: ○ Demographic, o socio-economic, and 。 livelihood data kadaster ORGANISED BY FIG GIN DATA ANALYSIS This study makes use of descriptive statistical tools of frequency counts and percentages The final vulnerability scores (VS) were computed using • VS = (Frequency + Area of Impact)x Magnitude) esri PLATINUM SPONSORS ITC Trimble. UNIVERSITY OF TWENTE. THE SCIENCE OF WHERE#9HIGNIL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY RESULTS Severity of potential impact No. of Respondent 200 58 50 4.9% 54.1% 41% [a] Risk associated with river floods [b] Very high 34.6% Not serious Serious Very serious Potential Impact (a) Severity of potential impact ORGANISED BY FIG kadaster GING UNIVERSITY OF TWENTE. Risk High Moderate Low 2.8% 0 100 22.1% 40.5% 200 No. of Respondent (b) Risk associated with river floods in the basin PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#10FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Cumulative Percentage (%) Group Frequency Percentage (%) Rural dwellers 217 51.10 51.10 Urban dwellers 15 3.50 Farmers Traders Fishermen Total 54.60 102 24.00 78.60 18 4.20 82.80 73 425 People mostly at risk of flood hazards ORGANISED BY FIG GIN Geo-Informatie Nederland kadaster ITC UNIVERSITY OF TWENTE. 17.20 100.00 100.00 PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#11FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Causes of flood problem in Adamawa No. of Respondents Percentage (%) Heavy rain 109 25.60 Release of water from dam Impervious surfaces Channel blockage Total Causes of floods ORGANISED BY FIG GIN Geo-Informatie Nederland kadaster 171 40.20 64 15.10 81 19.10 425 100.00 PLATINUM SPONSORS Trimble. ITC UNIVERSITY OF TWENTE. esri THE SCIENCE OF WHERE#12HIGNL WORKING WEEK 2021 No. of Respondent 100 90 80 70 60 64 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY 87 55' 48 89 82 50 40 30 20 10 0 Loss of life Property damage pollution of Infrstructure Disease drinking water damage Variables Effects of flood in livelihood of victims ORGANISED BY FIG G+N Geo-Informatie Nederland kadaster Destruction of farmland and products PLATINUM SPONSORS ITC UNIVERSITY Trimble. OF TWENTE. esri THE SCIENCE OF WHERE#13HIGNL WORKING WEEK 2021 Respondents SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Livelihood pattern of people living with floods 250 200 150 100 50 L 0 Have Natural Have Physical Have Human Have Financial Have Social capital capital capital capital capital Yes 197 187 156 158 166 % 56.9 51.1 47.6 43.2 49.8 No 149 179 172 208 167 % 43.1 48.9 52.4 56.8 50.2 Livelihood Patterns Livelihood pattern of people living with floods G+N ORGANISED BY FIG Geo-Informatie Nederland kadaster ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#14FIGNL WORKING WEEK 201 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Degree to which natural resources are affected by [a] Degree Very severe effect Severe effect Moderate effect Low or no effect flood 16 121 136 132 0 20 40 60 80 100 120 140 160 Respondents Low 4% Socio-economic impact of flood [c] Very severe 30% Moderate 32% ■Low Severe 34% ORGANISED BY FIG G+N Geo-Informatie Nederland kadaster Degree to which physical resources are affected by Degree Very severe effect Severe effect Moderate effect Low or no effect flood 20 20 [b] 116 139 127 0 20 40 60 80 100 120 140 160 Respondents (a) Degree to which natural resource; Moderate Severe Very severe (b) physical resources are affected by flood and (c) Percentage response on socio-economic impact of flood ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#15FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY The results show that rural dwellers are mostly at risk of flood hazard. The vulnerability score revealed that the agricultural sector is the most vulnerable with 32.8% for both cultivated and irrigated land. Biodiversity and forests are the least vulnerable sectors with 3.3% each. Analysis of livelihood patterns of people living with flood shows evidence of the presence of natural capital (56.9%). kadaster ORGANISED BY FIG GIN ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#16FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY Findings on the socio-economic impact of flood based on degree of physical and natural resources affected show severe effect (34%). The capacity to cope with floods were mainly between self-support and government support. Analysis of livelihood resources available to cope with flood impact shows that all the resources were of medium availability; - Economic (39.5%) Human capital (38.1%), Social and institutional capacity (33.2%). ORGANISED BY FIG G+N Geo-Informatie Nederland kadaster ITC UNIVERSITY OF TWENTE PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#17FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY CONCLUSION These findings contribute to the body of knowledge on flood vulnerability in Nigeria and provides crucial insights to government and stakeholders in adopting a holistic strategy to tackle the flood hazard. An additional recommendation is for the government to adopt citizen-centred and public participatory approaches in the planning and implementation of disaster management projects to ensure their continued sustainability. ORGANISED BY FIG G+N Geo-Informatie Nederland kadaster ITC UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE#18FIGNL WORKING WEEK 2021 SMART SURVEYORS FOR LAND AND WATER MANAGEMENT CHALLENGES IN A NEW REALITY THANK You kadaster GING ORGANISED BY FIG Geo-Informatie Nederland UNIVERSITY OF TWENTE. PLATINUM SPONSORS Trimble. esri THE SCIENCE OF WHERE