promoting climate resilient rural infrastructure in northern vietnam

Promoting Climate Resilient Rural Infrastructure in

Northern Vietnam

ADB Technical Assistance Project TA 8102-VIE : Introduction

April 2016James Ramsay, Team Leader/Bioengineer

River erosionBac Kan

The problem: riverbank erosion

River erosionBac Kan

The solution: expensive engineering

The problem: failing rural roads

Rural road

Poor design, little maintenance

Rural roadBac Kan

The solution: expensive engineering

Concrete revetment: $ 33 / sq. m

Is there an alternative?

Bioengineering: $ 6 / sq. m

Yes! (in many cases)

Examples of riverbank protection works: gabions

• RIVERBANK PROTECTION IDEAS

Riprap and bioengineering• RIVERBANK PROTECTION IDEAS

Geotextile and grass• RIVERBANK PROTECTION IDEAS

Bac Kan• RIVERBANK PROTECTION IDEAS

Live willow fencing

Vetiver grass on river bank

Before After

Vetiver grass on dyke in Vietnam

Community participation

Roads: typical cutslope needingslope protection measures

Integrated solutions: hard and soft engineering

Nepal:Road 13N, Km 316.6 before treatment

Nepal:Road 13N, Km 316.6 after treatment

Laos

Project StructureGRANT LOAN

MARD

APMBCPMU

DARDs

PPMUs

45 sub-projects

3: TA8102-VIE

ADB GEF

4 demonstration sites

UNDP ADB

1, 2, 4, 5: UNDP

Sub-project Management

UnitLIC

Demonstrations: where?

SP4 Bac Kan

Thanh Mai site

Thanh MaiSP4, Bac Kan Province:

Thanh Mai

Initialconditions:

bank erosion affecting rice fields

SP4: conventional solution

SP4: demonstration of low-cost alternatives

SP4 Bac Kan: immediately after Installation - 22 April 2015

SP4: demonstration of low-cost alternatives

SP4 Bac Kan: 5 months growth14 September 2015

SP32 Son La

Thom Mon

Existing conditions

Irrigation infrastructurein poor condition

Farmers protecting their land using local knowledge

Replacement weir

Riverbank protection demonstration

SP32 Son La: May 2015

Riverbank protection demonstration

SP32 Son La: June 2015

SP32 Son La: 10 September 2015

Riverbank protection demonstration

SP31 Son La: site for roadside demo

SP34/35 Thai Nguyen:site for roadside demo

Capacity building:Technical Core Group, workshops

Workshop fieldwork

SP32 Son La: 05 November 2013

TA 8102-VIE: 2016 Plans• Construction of 2 roadside demonstrations• Roadside bioengineering workshop• Monitoring• Evaluation of effectiveness & lessons learned

workshop• Recommendations - training curricula etc.

SP4 Bac Kan : 29 May 2015

Biophysicalmonitoring

Technical surveys for design ofroadside demonstrations

Thai Nguyen – Deo NhauDCP survey – 29 August 2015

Thank you!