MAPPING ENCROACHMENT ON ROAD RESERVES

A CASE STUDY OF KIKUYU-NDERI ROAD (E1507)

Mwanzia John Musyimi

F19/2459/2009

Supervisor: Mr.Mwenda

OUTLINE OF PRESENTATION Introduction Background of the study Problem statement Objectives of the study Area of studyMethodology Data and their sources Materials and their sources Overview of methodologyResults and interpretationConclusions and recommendations

IntroductionBackground of the study

a road- a long narrow stretch with smoothed or paved surface made for travelling by vehicles and carriage between two or more points

A road reserve- a strip of public land between abutting property boundaries specifically gazetted for the provision of public right of way

Encroachment- unlawful entering, gradually and without permission upon the land, property, other possessions or rights of another

Problem statement Many cases of encroachment on

road reserves Increased traffic jams due to reduced

road width Controversy between government

and members of public on issues of encroachment

Encroachment on road reserves interferes with development and maintenance of roads

Objectives of the studyGeneral objective To assess the extent of encroachment

on the road reserve of the study roadSpecific objectives To demonstrate the application of

AutoCAD and GIS in mapping encroachment on road reserves

To develop a road reserve map of the study road

To recommend ways to reduce encroachment on road reserves

Area of study

Area of study(cont’d) Kikuyu-Nderi road is a 4km road found in

Kikuyu Township, Kikuyu constituency which is in Kiambu County.

It starts from Kikuyu town all the way to Sigona near Sigona golf club where it joins Nairobi-Nakuru-Malaba road

It lies within the following graticules: latitudes 0˚22’28.18’’S and 0˚22’36.34’’S longitude 36˚53’53.64’’E and

36˚53’50.05’’E.

Methodologydata and their sources

DATA CHARACTERISTICS SOURCE

Topographic data Excel sheet Topographic survey

Registry Index map Digital form, scale

1:2500

Kenya Rural Roads

Authority

Survey plan Digital form, scale

1:5000

Kenya Rural Roads

Authority

Image Geo eye image Google earth

Softwares usedSoftware Source Purpose

AutoCAD 2010 KeRRA Plotting the outline of the road

Global Mapper

version 11.0

KeRRA Georeferencing RIM, Survey

plan and the image

ArcGIS (ArcMap

version 10.0)

KeRRA Analysis of data

Microsoft Excel Microsoft Presenting and editing

topographic survey data

Microsoft Word Microsoft Report writing

Materials and equipment used

Material Source Purpose

Total station

(Nikon)

 

KeRRACarrying out

topographic survey of

the area of study

Laptop

(Dell, Core i5, 4gb RAM

2.4GHz)

 

PersonalData editing,

manipulation,

analysis, and report

writing. 

Measuring tape

 

KeRRAMeasuring short

distances during

topographic survey.

Overview of methodology

no

yes

Data identification

Spatial data Non-spatial datadata collection and

capture

Data preparation, processing and

verification e.g. road drawing,georeferenci

ng,editing

Data correct?

Road reserve map

Results and interpretation

Results and interpretationLayout of digitized parcels

Road reserve map

Parcels that have encroached   

Parcel

Extent of encroachment in

terms of area in square

metres

1 Muguga Gitaru 486 175.5587

2 Muguga Gitaru 297 221.2837

3 Muguga Gitaru 16 278.6563

4 Muguga Gitaru 301 308.0213

5 Muguga Gitaru 690 118.31

6 Muguga Gitaru 691 127.8513

7 Muguga Gitaru 692 129.4451

8 Muguga Gitaru 693 144.3647

9 Muguga Gitaru 694 255.8748

10 Muguga Gitaru 143 495.6734

11 Muguga Gitaru 477 210.2109

12 Muguga Gitaru 265 264.2292

13 Muguga Gitaru 438 272.2591

14 LR 4871/15 164.1038

15 LR 4871/14 196.48133

16 LR 4871/13 266.1782

17 LR 4871/12 262.6267

18 LR 4871/11 281.345

Parcels that have been encroached by the road

 

Parcel

Extent of encroachment of road onto the

parcel in square metres

LR 4955/2 196.48133

LR 4871/3 243.437

LR 4871/4 262.568

LR 4871/5 270.345

LR 4871/12 296.117

LR 4871/13 211.678

LR 4871/14 213.030

LR 4871/15 246.549

conclusionThe following conclusions were made The road reserve of the study road has been

encroached There are sections which are completely

encroached There is road re-alignment whereby the

road has encroached land parcels The most encroached sections are those

with general boundary Sections with fixed boundaries have less

encroachment

Recommendations there is urgent need for action to be

taken on those who have encroached the road reserve

Those affected by road re- alignment to be compensated

All road reserves to be mapped and protected and if possible made available online

Sensitize members of the public about the role of road reserves and the legal implication of encroachment on public land

Update all records dealing with roads such as RIMs and survey plans

Thank you