ENGINEERING UNIT
166 OLD FORT ROAD
DURBAN
4001
DATE:
Dear Sir/Madam,
FLOODING INFORMATION
Property
...............................................................
...............................................................
Address
...............................................................
...............................................................
With reference to your enquiry at this Department, the following information is given in
respect of the above property:_
Under a flood of recurrence period 1 in 50 years, the property is estimated to be _
(a) totally affected by flooding.
(b) partially affected by flooding.
It is regretted that the exact level and/or position of the flood line on your property cannot be
made available, due to variances from time to time in local developments which affect such
levels and positions.
Before proceeding with future development on the property, professional advice should be
sought from a registered professional engineer specialising in hydrological and hydraulic
design work.
For your guidance, the professional engineer will be required to provide the following
information in relation to the development of the property, as given on the annexure
attached.
Additional information may be requested in respect of any particular development.
Yours faithfully,
A.M. PETERS
HEAD : ENGINEERING
INFORMATION TO BE PROVIDED IN RELATION TO THE DEVELOPMENT OF
PROPERTIES SITUATED IN THE 1 IN 50 YEAR FLOOD PLAIN
The Engineer referred to below must be a Professional Engineer experienced in hydrological
and hydraulic matters.
A.
For All Development
1.
The level in metres M.S.L. of the 1 in 50 year and 1 : 100 year flood line on the
property.
2.
Calculations by the Engineer indicating method of determining the flood line
employed.
3.
The position of the flood line on the property, whether the proposed development
is inside or outside the flood plain and the floor level of the proposed
development in metres M.S.L. where appropriate.
4.
The information from 3 is to be shown on all plans relating to the development.
5.
If all or part of the development including the earthworks is inside the
existing 1 in 50 year flood plain, then the Engineer must certify _
a)
that the foundations are capable of withstanding any forces or flood effects on
the development and be prepared to provide design calculation to that
effect if called upon to do so;
b) that the development in the flood plain will not affect the flooding or flood
levels on adjacent properties, upstream, downstream and opposite as
the case may be, and such certification to be backed up by calculations.
B. For All Residential Developments _ New or Extensions
The information as required in A. 1 to 5 inclusive plus _
6.
7.
If the floor level of the proposed new development given in 4 above is below
the 1 in 50 year flood level the development will not be approved.
Extensions to existing development may be allowed within the 1 in 50 year flood
plain provided such extensions are not used for habitable purposes e.g. en suite
bathrooms may be permitted.
If the floor level of the proposed development given in 4 above is above the 1 in
50 year flood level, then the Engineer must certify that there is a continuous
means of access (whether private or public) from the residential building to a
public road all at a level above the 1 in 50 year flood level.
3.../...
C. For Sub_Divisional Scheme Approval
1.
In terms of Section 14 of the National Water Act 1998, all plans relating to the
subdivision of land shall indicate the maximum level likely to be reached on an
average every hundred years by floodwaters on the land in question from any
watercourse with a known and defined channel and with a catchment area
exceeding one square kilometre.
2.
Section 3 of the Council's Subdivisional Bylaws require, in addition, that all plans
relating to the subdivision of land shall indicate the maximum flood level under a
flood of recurrence period 1 in 50 years from any such watercourse.
3.
When it is necessary to show a flood line on a plan, an Engineer shall calculate
the position of that flood line and the following minimum information should be
provided with the subdivisional application:_
1)
Principle
method
prediction;
2) Assumed 1
catchment;
of
calculation
and
formula utilised for flood level
in 50 year and 1 in 100 year
rainfall intensity in the
3) Catchment area taken in Ha;
4) Assumed catchment runoff factor where appropriate.
JUNE1999
ENGINEERING UNIT
166 OLD FORT ROAD
DURBAN
4001
DATE:
Dear Sir/Madam,
FLOODING INFORMATION
Property
...............................................................
...............................................................
Address
...............................................................
...............................................................
With reference to your enquiry at this Department, the following information is given in
respect of the above property:_
Under a flood of recurrence period 1 in 50 years, the property/development is estimated
to be
(a)
totally affected by flooding.
(b)
partially affected by flooding.
(a)not affected by flooding
(i) It is regretted that the exact level and/or position of the flood line on your property cannot
be made available, due to variances from time to time in local developments which affect
such levels and positions.
Before proceeding with future development on the property, professional advice should be
sought from a registered professional engineer specialising in hydrological and hydraulic
design work.
For your guidance, the professional engineer will be required to provide the following
information in relation to the development of the property, as given on the annexure
attached. Additional information may be requested in respect of any particular
development.
(ii) This Department has no objections to the abovementioned development.
Yours faithfully,
A.M. PETERS
HEAD : ENGINEERING
2.../....
INFORMATION TO BE PROVIDED IN RELATION TO THE DEVELOPMENT OF
PROPERTIES SITUATED IN THE 1 IN 50 YEAR FLOOD PLAIN
The Engineer referred to below must be a Professional Engineer experienced in hydrological
and hydraulic matters.
A.
For All Development
1.
The level in metres M.S.L. of the 1 in 50 year and 1 : 100 year flood line on the
property.
2.
3.
Calculations by the Engineer indicating method of determining the flood line
employed.
The position of the flood line on the property, whether the proposed development
is inside or outside the flood plain and the floor level of the proposed
development in metres M.S.L. where appropriate.
4.
The information from 3 is to be shown on all plans relating to the development.
5.
If all or part of the development including the earthworks is inside the
existing 1 in 50 year flood plain, then the Engineer must certify _
a)
that the foundations are capable of withstanding any forces or flood effects on
the development and be prepared to provide design calculation to that
effect if called upon to do so;
b) that the development in the flood plain will not affect the flooding or flood
levels on adjacent properties, upstream, downstream and opposite as
the case may be, and such certification to be backed up by calculations.
B. For All Residential Developments _ New or Extensions
The information as required in A. 1 to 5 inclusive plus _
6.
If the floor level of the proposed new development given in 4 above is below
the 1 in 50 year flood level the development will not be approved.
Extensions to existing development may be allowed within the 1 in 50 year flood
plain provided such extensions are not used for habitable purposes e.g. en suite
bathrooms may be permitted.
7.
If the floor level of the proposed development given in 4 above is above the 1 in
50 year flood level, then the Engineer must certify that there is a continuous
means of access (whether private or public) from the residential building to a
public road all at a level above the 1 in 50 year flood level.
3.../...
C. For Sub_Divisional Scheme Approval
1.
In terms of Section 14 of the National Water Act 1998, all plans relating to the
subdivision of land shall indicate the maximum level likely to be reached on an
average every hundred years by floodwaters on the land in question from any
watercourse with a known and defined channel and with a catchment area
exceeding one square kilometre.
2.
Section 3 of the Council's Subdivisional Bylaws require, in addition, that all plans
relating to the subdivision of land shall indicate the maximum flood level under a
flood of recurrence period 1 in 50 years from any such watercourse.
3.
When it is necessary to show a flood line on a plan, an Engineer shall calculate
the position of that flood line and the following minimum information should be
provided with the subdivisional application:_
1)
Principle
method
prediction;
2) Assumed 1
catchment;
of
calculation
and
formula utilised for flood level
in 50 year and 1 in 100 year
3) Catchment area taken in Ha;
4) Assumed catchment runoff factor where appropriate.
JUNE1999
rainfall intensity in the
ENGINEERING UNIT
166 OLD FORT ROAD
DURBAN
4001
DATE
Dear Sir/Madam,
ULWAZI NGEZIKHUKHULA
Property
...............................................................
..............................................................
Address ..............................................................
..............................................................
Ngokwesicelo semininingwane yakho kuleli hhovisi, nansi imininingwane enikeziwe
maqondana nendawo engenhla:Ngokwezikhukhula ecenzeka kanye eminyakeni engamashumi amahlanu, indawo
kulindeleke
ukubaa) Ilimale yonke ngenxayezi zikhukhula
b)
Ingxenye yayo ithintwe izikhukhula
1. Siyaxolisa ukukwazisa ukuthi amaleveli okuyiwo kanye/noma inclawo lapho kumele
kuhambe khona izihukhula, ingetholakale, ngenxa yokushintshashintsha
kwezinthuthuko ezenzakabyo eziipazamisa lawa noma izindawo
2. Ngaphambi kokuba uqhubeke nokwakha, izeluleko zingathobkala konjimyela ababhalisik
abanolwazi kwezokuathdhungulwa kwamanzi.
3. Uku uthole ukwelulekwa, unjinyela kuzomele anikezele lolu lwazi olulandelayo oluqondene
nezokuthuthuwswa kwezindawo njengoba kulotshwe kwi Elandelayo
Ulwazi olunzulu mayelana nezenthuthuko, luyatholakala
Yumi ozithobayo
A.M. PETERS
HEAD : ENGINEERING
UKUNIKEZELWA KWEMIMNINGWANE MAQONDANA NOKUTHUTHUKISWA
KWEZINDAWO EZITHINTEKAYO EZIKHUKHULENI ZONYAKA OWODWA
KWENGAMASHUMO AMAHLANU
Unjinyela okukhulumywa ngawe ngezanansi, kumele kube unjinyela obhalisiwe nonolwazwi
ngezinkinga eziphathelene namanzi ezimvula
A. Okwazo Zonke Izinhlelo Izenththhuko
1.
2.
Izibalo zikanjiniyela ezivezaindlela esetshemisiwe ukuthola
3.
Indawo engatholwa izihhukuka ecacisayo uma inthuthuko esohlelweni
ingaphokathi
noma ngaphandle komncele wezikhukhula kanye neleveli tenthuthuko
esohlelweni
kumamitha, lapho kufanelekile .
4.
Ulwazi/iminingwane ekunombolo 3 ngaphezulu, kumele itshengiswe
kumaplani
amayelana nezenthuthuko.
5.
Uma yonke noma ingxengenye yentuthuko kanye nezokusetshenzwa
komhlaba,
kungaphakathi komncele
amahlanu, unjinyele
kumele aginsekise:
(1)
wezikhukula
zonyaka
kwengamashumi
Ukuthi isisekelo somuzi siqine singamelana ukuthi nemimoya
noma
nezikhulukhula futhi
ezisthshenziselwe
alungele
ukumkezela
ngezibalo
ukumelana nalomonakalo uma kudingeka ukuba enze njalo.
(2)
Ukuthi loko kuthuthukiswa oku semncelem wezikhukhula
kungephazamisane, nezikhukula noma namaleveli ezikhukula
emizi
eseduzane,
enhla
nangaphesheyafuthi leso
nomfula,
ezansi
nomfula,
siqinisekiso kumele sihambisane nezibalo zakhona.
II.
OKHWEZINTUTHUKO
EZIKHULISWAYO
ZASEMAKHAYA
Iminingwane njegoka kudingeka ku A1. Kuya ku-5
-
EZINTSHA
NOMA