Related Experiment Video
Updated: Jun 7, 2026
04:41
A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs
Published on: January 26, 2018
Flood policy reversal in australia
1Centre for Resource and Environmental Studies Australian National University Canberra Australia.
Disasters
|October 21, 2010
Summary
New South Wales
Area of Science:
- Environmental Policy
- Urban Planning
- Natural Hazard Management
Background:
- The 1977 New South Wales flood prone lands policy shifted from structural works to land-use planning.
- It utilized 1:100 year and 1:20 year flood events for floodplain and floodway delineation, respectively.
Purpose of the Study:
- To analyze the evolution and impact of New South Wales' flood prone lands policy.
- To understand the reasons behind the policy's eventual overturning and subsequent changes.
Main Methods:
- Historical policy analysis.
- Examination of governmental and community responses to floodplain management strategies.
Main Results:
- Initial policy faced opposition due to mapping of developed urban areas, particularly in Sydney.
- Concerns over legal liability and perceived property value decline fueled opposition.
- The policy was overturned in favor of increased local government responsibility.
Conclusions:
- The shift in policy reflects a complex interplay between technical planning, legal concerns, and public/developer interests.
- The new approach emphasizes a manual-guided, integrated approach to flood hazard assessment, incorporating social criteria.
Related Concept Videos
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
02:41Responses to Drought and Flooding
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
01:29Applications of GIS: Disaster Management and Emergency Response
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
02:07Conservation of Declining Populations
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
01:22Net Change Theorem
The Net Change Theorem is a fundamental principle in calculus that establishes a direct relationship between a function’s rate of change and its accumulated change over an interval. Mathematically, it states that the definite integral of a function's derivative over a given interval [a,b] yields the net change in the original function:This theorem has significant applications in various real-world scenarios, including physics, economics, and engineering. A particularly useful application is in...
01:24Rapidly Varying Flow
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...