3 Geography resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevel IGCSE Other SubjectClear filter Geography Exam board AQA TopicClear filter Rivers Resources Mindmap Revision Notes Factors that affect lag time so give a higher risk of flooding. IGCSE, Geography Mindmap Geography Other, Geography Revision notes The Hydrological Cycle IGCSE, Geography Revision notes Search again