SAJC Cluster 4 GI (Fluvial Flood Management Qn + notes)

SAJC/Geography/Fieldwork_Exercise_2025 Page 1 St Andrew’s Junior College H2 Geography Cluster 4: Fieldwork Topics in the syllabus: Fluvial flood risk and strategies to mitigate it (Cluster 2) Area chosen: Bishan Ang Mo Kio Park (BAMK Park) Hypothesis: Places near the Kallang River in BAMK Park have higher flood risk than places far from the riverbank. Geographical question: Does places near the Kallang River in BAMK Park have higher flood risk than places far from the riverbank? Develop a plan: • establishes the primary and secondary data needed to examine the question/hypothesis posed • identifies appropriate methods to determine sample size, select sample and collect data • ensures accuracy and reliability of data collected • addresses possible issues related to research ethics and the limitations imposed by resources • minimises potential risks in undertaking fieldwork. Craft Geographical Question or Hypothesis Students should be able to craft geographical questions/hypotheses based on geographical issues or phenomenon that are: • at a suitable scale • researchable or measurable • clearly defined

SAJC/Geography/Fieldwork_Exercise_2025 Page 2 • How does flood risk differ with distance from the Kallang River in BAMK Park? (Swamp Tea Tree and Aramsa) • How does flood risk differ with land use along the Kallang River in BAMK Park? (Students may opt to study Swamp Tea Tree and Aramsa/241 HDB) • How does flood risk differ with urban function along the Kallang River in BAMK Park? (Aramsa and 241 HDB) Flood Risk Index: Indicator Rating for Site A Rating for Site B Severity of Impact (1: Highly Severe; 5: Not Severe) Distance from river channel Elevation above river channel Land Use Human Flow River Efficiency (1: Low river efficiency; 5: High river efficiency) Hydraulic Radius Potential for OLF to Take Place (1: High potential for OLF; 5: Low Potential for OLF) Ground Cover Infiltration Rate Effectiveness of Mitigating Strategies (1: Ineffective; 5: effective) Hard Engineering Measures Soft Engineering Measures Average Rating: Data Collection Methods: Indicator Data Collection Method Severity of Impact (1: Highly Severe; 5: Not Severe) Distance from river channel Google Map Elevation above river channel Google Map Land Use Observation Human Flow Pedestrian Count River Efficiency (1: Low river efficiency; High river efficiency) Hydraulic Radius Measurement Potential for OLF to Take Place (1: High potential for OLF; 5: Low Potential for OLF) Ground Cover / Landuse pattern Observation Infiltration Rate Measurement Effectiveness of Mitigating Strategies (1: Ineffective; 5: effective) Hard Engineering Measures Observation Soft Engineering Measures Observation

SAJC/Geography/Fieldwork_Exercise_2025 Page 3 To measure infiltration rate, follow the steps below: a) Based