August 18, 20091

Contents

1. Outline
2. Planning by Objects
3. Core Projects of Each River
4. Expected Effects
5. Investigation Plan23

VisionObjectCli t
ClimateChange

Coexistenceof Nature andHumans

4Re-creation
Reof NationalLandBalanced
Development& Green
GrowthBackground
Frequent Flood & Drought Due to Climate Change¾ Watera e scascarcityc yoof 1 bbillion
o m3 in 2016
0 6¾ Annul flood damage US$ 2.3 billion, Rehabilitation US$ 3.5

D t i ti off W
Deterioration
Watert Quality
Q lit & Ecosystem
Et¾ Immoderate cultivation on floodplains¾Aggravation of water quality owing to water scarcity in drought

Inadequate Utilization of Riverine Area
¾ Desolate areas or parking lots
¾ Insufficient space for leisure & culture along rivers

Domestic Economic Crisis¾ Increase of joblessness & slowdown in local economy
5Project Scope
ProjectGroup

Temporal

Scope

Main

Direct-linked Major tributaries & water quality improvement
LinkedUtilization of riverine infrastructure

Main

Completed in 2011 (dams & reser
reservoirs
oirs in 2012)

Direct-linked Completed in 2012
LinkedSpatial
Scope

Mainstream of four riversExecuted by yearly plan of each ministryHan, Nakdong, Geum & Yeongsan Rivers
Seomjin River & thirteen major tributaries of mainstreams
66Internal and External Case Study
Enhancement of Flood Control by Dredging“Room for the river (2006)” in the Rhine, the Netherlands
Enlarging of mainstream

Deeping of floodplain

Displacement of Levee

Enlargement of channel cross-section by dredging in Yodo river, Japan

Versatile Utilization of Riverine Space & Ecological Restoration
Eco-river of Taehwa River in Ulsan (2004)

Comprehensive Development Project of Han Rivier (1982~1986)- Channel regulation of the reach of 36 km between Heanju & Amsa
* Dredging amount: 69 million m3 (1.9 million m3/km)- Increased bio-diversity : fishes 42
771 Sp, birds 21

98 Sp (2007)

8

Riveroriented
growth ofcommunity

Securing
water

Protecting
againstfloodsCreating
complexspace
pfor
resident
Improvingwater quality& restoring
ecology9

1. Securing abundant water resources in preparation for water shortage
Securing water supply of 1.3 billion m3 for preparation of water shortage of 1 billion m3 in 2016
Securing available water supply (0(0.88 billion m3) by dredging & installing 16 weirs

Used for many purposessuch as stream maintenancewater, etc.
Operating in an organic
manner by connecting themwith upstream dams throughIT
Making them serve as
landmarks considering thesurrounding landscape

Han R.

Geum RR.

Seomjin R.

Nakdong R.

* Installing environment-friendly
f iliti such
facilities
h as fish
fi h way,ecological wetlands, etc.

Yeongsan R.
10Constructing landmarks by benchmarking excellent weirs
Hagestein weir in the Rhine, Netherlands

Gates closedGates opened11

Designg of weirs applicablepp
to the domestic rivers

12

Weirs shall be installed within low-flow channel

13Construction of small & medium sized multi-purpose dams

Construction of Yeongju and Bohyeon dams inth N
theNakdongkdriveri
watershedt h dConnection of Andong-Imha dam (1.8km)

Yeongju dam

Connection of Andong-Imha dam
NHWL

NHWL

LWL
LWL
Storage: 1
1,248
248 million m3
Andong dam
14

Storage: 595 million m3
Imha damRaising the existing agricultural reservoirs (96 sites, 250 m3)Screeningg the ppossible reservoirs for raisingg out ofthe 17,600 nationwide (322 sites above 10km2 of watershed area)
The additionally secured reservoir storage shall be discharged
intensively during low water season to improve flow duration.
Additional raising

Wedge raising
Raised Water Level

NHWL

FilterNHWL
FilterFilter15

Silt CCore

Siltt Core

Raised Water Level

Filter2. Preparing flood control measures for the prevention of flood damage
Increment of 920 billion m3 of flood storage preparing the flood of 200
200--year return period
LLoweringi off flfloodd watert llevell (0(0.4~3.94 3 9 m)) bby ddredging
d i ththe ddeposited
it d soilil (570 millionilli m3)
Decreased flood water levelby dredging the low-flow channel

Dredging thelow-flowchannel

Using a new-concept flood control measure instead of theexisting uniform method such as embankment raising16

Installing flood control reservoirs & retention ponds (50 million m3)
Channelstorage+Watershedstorage

Space for enhancementof stream ecology inordinary time
Retention ponds (4 sites)
Watershedstorage

Fl d control
Floodt l reservoiri (2 sites)
it )

17

Reinforcing superannuated levees & expanding drainage gates

Reinforcement of superannuated levees (620km)

Reduction of flood water level (0.3~1.1 m) and quick flood drainage
WorkExpansion
pof drainage
g g
gate at Nakdongg estuaryyExpansion of drainage gate at Yeongsan estuary

18

Guide levees
BeforeConfluentC
flt areaof Geumho riverto Nakdong river
After

Installation of guide levees :3 sites in Nakdong river19

3. Improving the Water Quality and Restoring Ecosystem
Improvement of water quality
Impro ement of water
Improvement
ater quality
q alit for four-river
fo r ri er• Systematically controlling 34 tributary-estuaries causing high levels of pollution• Newly establishing the stream environmental standards for COD and TP• Advancing the standards for releasing at the basic environmental facilities• Implementing the TP Total Water Pollution Load Management System• Expanding 644 sewage treatment facilities• Reducing non-point pollution

Environment Management under construction• Establishing of the Integrated Water Pollution Prevention Center• Interception of industrial waste water• Disposal of dredged soil20R t ti off ecosystem
tRestoration
Providing habitat for wildlives• Restoring ecological rivers (Province-class river : 91 sites)• Fostering substitute habitat• Fostering ecological wetland• Installing fish wayInstallation
sta at o of
o close-to-environment
c ose to eo e t rivere ststructuresuctu es• Installing nature-observatory• Introducing close-to-environment facilities
C
i close-to-environmentli
bl weirs
i &d• Constructing
movabledrop structures

Building a research basis for aquatic habitat• Proliferating the endangered fishes• Surveying for aquatic health• Mapping the ecosystem of four rivers

21

Restoring ecological rivers and creating a river eco-belt
Clearing the farmland such as removing the vinyl greenhouse

Creating ecological rivers and restoring urban streams, etc.,
along 929 km of river area
Reducing non-point pollution by creating river eco-belt

22

4. Creating Complex Space for Residents
Creating leisure space
Constructing bicycle roads connecting the upstream anddownstream areas (1,728 km)
Building a nationwide network connecting major national roads
and local roads
Creating pedestrian lanes
lanes, inin-lineline skating area
area, water leisuresports facilities, etc

23

Improving access to the waterfront
Addressing
Addi ththe problem
bloff didisruptionti off space causeddbby road,dbank, etc.
Reinforcing the connection between river and urban area

Waterfront-urban area network

Green pedestrian path, Underground road24

Utilizing water space in a variety of ways
Utilizing the water space as a space of residence andeconomic activity
Creating a waterfront landmark
Developing architectural design and theme in harmony with thewaterfront
Recreating a waterfront city

Waterfront landmark

25

Waterfront architecture in harmony

Utilizing water space in a variety of ways
Creating a dynamic space within the urban area
Various activity spaces and banks, shore protection with smoothslope, etc.

Creating nature-friendly, waterfront space
Preserving
g the natural environment near rivers,, creatingg
observatory facilities, resting facilities, etc.
Pedestrian lane, Bicycle lane, etc.

Nature-style waterfront space26

5. River-oriented Regional Development
Improving branch rivers

Reviving the four rivers
with a cultural theme

Comprehensive maintenance

CultivatingC
lti ating the functions
f nctions ofculture and sightseeing

Preparation against floods with
100~200-year return periods

Specialized package sites forculture and sightseeing

Project on "Making Beautiful
River Villages"

Activating riding bicycles andcreating leisure-sports complex

Central government 8 sites, thenlocal government 23 sites

Creating river culture
combining culture & art

River-oriented regional development

27

DevelopingDl i waterfrontt f tnear reservoirs

ActivatingAti ti ththe green
growth industry

Stabilization of vallies &increasing water resourcesIntegrate river information system

Clean IT sensor

Making noted places linking
with urban & rural areas

Digital tour system
Robots for environment management

MakingMki ththematicti placelffrom
local native resources

Solar & Hydro-power generation

28

29

Han River ‒ Flood control, ecosystem restoration and recreation

30

Han River
Water

Increase of water supply : 50 million m3
Weirs (3 sites, 40 million m3)
Agricultural reservoirs (12 sites, 10 million m3)

Flood

Increase of Flood control capacity : 90 million m3
Dredging: 50 million m3, reinforcing levee : 131 km
Retention ponds (2 sites, 30 million m3)
Agricultural reservoirs (10 million m3)

Water qquality
y & ecosystem
ySewer treatment facilities : main (55 sites), local (91 sites)
Non-point source management : eco-retention ponds (16 sites)
Restoration : Eco-river
Eco river (193 km)km), tributary (22 sites) & urban stream (5 sites)

Complex space Bicycle road : 305 km
Local development River regulation : 84 sites, 480 km
3131

Nakdong River ‒ Flood control, water supply & ecosystem restoration

32

Nakdong RiverWaterIncrease of water supply : 1.02 billion m3
Weirs (8 sites, 0.67 million m3)
Agricultural reservoirs (31 sites, 0.1 billion m3)
Small & medium sized dams (3 sites, 0.25 billion m3)

Flood

Increase of Flood control capacity : 90 million m3
Dredging: 440 million m3, reinforcing levee : 335 km
Yeongju dam (80 million m3), agricultural reservoirs (50 million m3)
Guide levee (3 sites), drainage gates at estuary

Water qquality
y & ecosystem
ySewer treatment facilities : main (74 sites), local (238 sites)Non-point source management : eco-retention ponds (23 sites)
Restoration : Eco-river
Eco river (407 km)km), tributary (13 sites) & urban stream (1 site)

Complex space Bicycle road : 743 km
Local development River regulation : 148 sites, 862 km
33
33

Geum River ‒ Local development linking with Baekje cultural heritage34

Geum River
Water

Increase of water supply : 110 million m3
Weirs (3 sites, 50 million m3)
Agricultural reservoirs (30 sites, 60 million m3)

Flood

Increase of Flood control capacity : 100 million m3
Dredging: 50 million m3, reinforcing levee : 117 km
Agricultural reservoirs (50 million m3)

Water quality & ecosystem
Sewer treatment facilities : main ((63 sites),), local ((133 sites))
Non-point source management : eco-retention ponds (9 sites)
Restoration : Eco-river (199 km), tributary (8 sites) & urban stream (1 site)

Complex space Bicycle road : 248 km
sites, 588 km
Local development River regulation : 94 sites
Waterway Restoration : 67 km
35
35

Yeongsan River ‒ Flood control & water quality improvement36Yeongsan River (including Seomjin River)
Water

Increase of water supply : 120 million m3
Weirs (3 sites, 40 million m3)
Agricultural reservoirs (23 sites, 80 million m3)

Flood

Increase of Flood control capacity : 120 million m3
Dredging: 30 million m3, reinforcing levee : 37 km
Flood control reservoirs (2 sites, 9 million m3)
Retention ponds (1 site, 11 million m3)
Agricultural reservoirs (70 million m3), drainage gates at estuary

Water quality & ecosystem
Sewer treatment facilities : main (15 sites), local (127 sites)
Non-point source management : eco-retention ponds (37 sites)
Restoration : Eco-river (130 km), tributary (5 sites)

Complex space Bicycle road : 432 km
Local development River regulation : 41 sites, 211 km
Waterway restoration : 80 km
3737

38

Korea ‒ Emerging as one of the world’s advanced countries in water management

Fundamental solution of water shortage and flood damage¾

Increasing the available water supply and flood control capacity

Improving the level of national leisure culture and quality of life¾

Providing cultural, resting, and exercise space for residents

Creation of sound ecosystem, improvement of water quality and river restoration¾Improving the rate of “good water”

Enhancing the prestige of the nation as a global leader in water management¾ Disseminating the experience and technology attracting water-related
i tinternationaltil organizations
i ti

Activation of the regional economy through the Green New Deal Project¾Jobthe effectJ b opportunities
t iti forf 340,000
340 000 persons expectedt d iincluding
l di thff t off
production inducement amounting to US$ 3.3 billion
39

40

Investigation
gpplanMLTM

Main$14 billionbilli

Directlinked$ 4.4 billion

LinkedRiver regulation, dams, detention ponds : US$ 11.3 billion

MIFAFF Agricultural reservoirs, drainage gates : US$ 2.3 billion
MEMLTM

Water quality improvement : US$ 0.4 billion

Seomjin River, major tributaries : US$ 1.4 billion

MIFAFF Agricultural reservoirs : US$ 00.22 billion
ME

Water quality improvement : US$ 2.8 billion

Yearly performance according to the plan of each ministry41

Headquarters ofFour-River Restoration Project42