what is flooding

What is flooding ? • surface water > carrying capacity of the channel • exceed bankfull stage • inundation occurs at flat ground (flood-plain) alongside the river banks

Upload: kenny-lam

Post on 23-Jan-2015

532 views

Category:

Technology

0 download

Report

Download

Embed Size (px):

DESCRIPTION

TRANSCRIPT

What is flooding ?

• surface water > carrying capacity of the channel• exceed bankfull stage• inundation occurs at flat ground (flood-plain) alongside the river banks

Magnitude of flooding in HK

Blackspot Scales:

Minor - affecting area < 50x50m (0.25 hectare) minor public nuisance and inconvenience

Small - affecting area >0.25 hectares agricultural damage , isolated property damage/ traffic disruption

Medium - affecting area > 10 hectares significant property damage/ serious traffic disruption

Major - affecting area > 100 hectares

serious socio- economic disruption

Source: DSD

Flooding Blackspots in H.K.

(out of 16 total blackspots)

Northern New Territories (56%)Southern New Territories (13%)Kowloon (6%)Islands (25%)

Source : DSD

Why in Northern New Territories?

Coming up next …

1. Causes of flooding

2. Measures taken by government to tackle flooding

3. Evaluation of gov.’ s effort and suggestion

Natural factors Weather

Catchment features

Human influence

Mobile Mental Health Apps are Flooding the Marketplace: Who is using them and to what effect?

Water Well Flooding: What Do You Do? - Welcome to DECdec.vermont.gov/.../files/dwgwp/roed/pdf/wellfloodingwhatdoyoudo.pdf · Webinar - Water Well Flooding: What Do You Do? 4/17/2014

HOW TO PREPARE...your home, or your business is in danger. FLOOD BASICS WHAT Flooding is an overflowing of water onto land that is normally dry. Flooding may happen with only a few

Aug 27, 2011 - Doctor’s Brook is Flooding

PREPARING FOR HURRICANES AND COASTAL FLOODING: A … · flooding is just as relevant to the Pacific coast. Deciding How to Prepare For Hurricanes and Coastal Flooding ... or persuasion

SPECIAL ISSUE - Flooding Tears , Flooding Hearts

Your Chamber News M A Y96bda424cfcc34d9dd1a-0a7f10f87519dba22d2dbc6233a731e5.r41.… · wildfires, flooding and emergency preparedness. Learn what the county is doing to be prepared

Preparing for Flooding - Grand River Conservation Authority · Preparing for Flooding T he central part of Ayr lies on land that is prone to flooding – the floodplain – and high

Sunshine Coast Council Flooding and Stormwater Management ... · to flooding and stormwater management. Crispin Smythe Crispin is the Coordinator of the Sunshine Coast Council Flooding

What Causes Flooding Along the Logan Riverhydrology.usu.edu/giswr/Archive17/Stephenson/TermProject.pdf · What Causes Flooding Along the Logan River Stephenson Figure 2. Annual peak

St Mary’s Island Flood Risks to CMT Estates€¦ · The flooding in Uckfield in 2000 (upstream from Lewes) is an example of river flooding. Pluvial flooding from localised excessive

Distillation Column Flooding Diagnostics with Intelligent ... · Distillation Column Flooding Diagnostics with Intelligent Differential Pressure Transmitter Distillation is a common

SUMMER 2011 Flood Preparedness Guide - Home | NRCS€¦ · for what flooding occurred last year and if flooding was greater than what appears on the maps, then prepare for at least

Flooding and Drainage · this type of flooding is low, the impact upon communities is high due to the sudden release and rapid inundation of flood water; and • Coastal Flooding

Flooding Outside Mapped Flood Plains · Flooding Outside Mapped Flood Plains It is a common misconception that Flood Insurance is only available if your home or business is located

IRRIGATION METHOD & Chapter WATER REQUIREMENTS 1...applying irrigation water to the comparatively steeper rolling land, is: (A) check flooding (B) boarder flooding (C) wild flooding

PAJANG ATLAS ASSETS English.pdfPollution and flooding along the river is bad for health Institutional and commercial center What are Pajang’s assets? What are potential issues? Public

Pluvial Flooding In Europe - isprambiente.gov.it · Pluvial Flooding is flooding as a result of heavy rainfall when water which does not infiltrate the ground ponds in natural or

Trouble-Shooting Flooding of Paper Dryers · Troubleshooting Paper Dryer Flooding Paper dryers can experience periodic problems with flooding. A “flooded” dryer is one that has

Bellwork What factors influence flooding?

Global sea-level rise is recognised, but flooding from

Water Well Flooding: What Do You Do?Webinar - Water Well Flooding: What Do You Do? 4/17/2014 9 17 Well Construction: Regular Inspection of the Well Head and Surface Seal are encouraged

Your essential Flood Guide · flooding, act now and plan what you would do in a flood. Flooding can happen quickly so preparing in advance can reduce the damage and disruption flooding

Potential Storm Surge Flooding · Tips for Emergency Managers Potential Storm Surge Flooding The Potential Storm Surge Flooding map is an experimental National Weather Service (NWS)

Community Risk Register - East Hampshire · Flooding FLOODING Many people think that flooding will never happen to them – but it could. Our local area is at risk of coastal, fluvial,

Flood: Risks and Mitigation - Utahlong-term rainfall events, spring snowmelt river flooding, and dam break flooding. Types of floods Flash Floods: A flash flood is a rapid flooding

Natural Hazards HO Pui-sing. Contents What are natural hazards Flooding Drought

Dealing with floods Preparing for Flooding · 2018. 2. 8. · Preparing for Flooding T he central part of Drayton lies on land that is prone to flooding – the floodplain – and

may undergo alterations. · 0.1% and 1%. Medium risk is for chance of flooding of between 1% and 3.3%, whilst high risk is for a chance of flooding of greater than 3.3%. Flooding

Flooding: advice for the public...Flooding: advice for the publicAdvice on: • planning for flooding before it happens • what to do during a flood • recovering and cleaning up

Title: The Effects of Flooding Flooding can be very dangerous and only 15cm of fast flowing water is needed to knock you off your feet. Flooding can disrupt

Laboratory Investigation of Polymer-flooding, ASP-flooding

RESEARCH Open Access Protection from annual flooding is ... · Protection from annual flooding is correlated with increased cholera prevalence in Bangladesh: a zero-inflated regression

What is bioinformatics? An introduction and overview€¦ · Department of Molecular Biophysics and Biochemistry Yale University New Haven, USA Introduction Biological data are flooding

Trivia Fun Times What does Mesopotamia mean? What are the two rivers that run through Mesopotamia? What technique was used to help with flooding