Cloudburst Management Plan - Climate Change Adaptation

6.3 Total Investments 19
The speed with which the Cloudburst Management Plan will be implemented
is a political decision but, technically speaking, it could be done
over a period of approximately 20 years.
Figure 5 shows the estimated total costs during the period broken down
into private, revenue-financed, and municipal investments. The period
is furthermore broken down into three intervals: 2013-2016, 2016-2025,
and 2026- 2033. Those measures which are easy to implement and
those able to drain the largest quantities of water hence limiting most
incidents of pluvial flooding are expected to be implemented during the
first two investment periods.
Figure 5 // Overview of the economic consequences of the Cluodburst Management plan
during three periods: up to 2016, up to 2025 and overall up to 2033. All prices are presentday
prices (2012) – without discounting – exclusive of financing charges, and exclusive of
VAT.
6.4 Allocating Responsibility
To make the city more resilient to pluvial flooding will require action by
at least three players: property owners, the utility company, and the City
Administration.
• Property owners are, basically, responsible for flood-proofing their
properties on private soil. This might involve protecting basements by
means of anti-flood backflow valves, ground level adjustments, raising
the sides of light wells, basement entrances, etc.
• The utility company is responsible for ensuring that drainage systems
meet the service levels, i.e. that an average of one occurrence of
sewer discharge to ground level is permitted per 10 years. The utility
company is not responsible for protecting privately owned basements.
• This Plan will also allocate responsibility to the utility company for
implementing adaptive measures in accordance with the new risk
dimensioning (see section 4).
• The City Administration is, in its capacity of urban planning authority
and owner of the utility company, responsible for ensuring that the
adaptive measures will be incorporated into the municipal master
plans and implemented. The City Administration will also be responsible
for climate adaptation/redirection of water courses.
19
3,8
4,0
3,5
3,0
2,5
2,0
1,5
1,0
0,5
0,0
0,8
3,1
0,2
1,0
1,2
0,5
1,8
2,2
0,4
0,4
Total for 2013-2033 approx. DKK 3.8 m
The period 2013-2015 approx. DKK 3.1 bn
Overall investments
0,1
Private measures against
pluvial flooding
Revenues from charges
for adaptive measures
Municipal share (extreme rainfall
events and climate adaptation)
The period 2013-2016 approx. DKK 0.8 bn