Evaluation of various decentralized technologies for an expedient, low-cost, and effective integrated approach to manage stormwater in a low-income district of Guzelyurt, North Cyprus. The proposed system utilizes abandoned septic tanks for retention and direct infiltration of storm water, offering recharge potential for the depleted aquifer. The City Council of Guzelyurt is now discussing a timeline for this project.

1. Integration of Decentralized Approaches to Urban Flooding
Bilgici, S. | Gerow, C. | Kumar, P. | Preuner, P. | Troutman, H.
HCU | REAP | PROJECT 3 | 27.01.16
Source: Yanmaz, Akyürek, Akıntuğ (2010)
1

2. Identification
Data
Implementation
Analysis
Future
Outline
Approaches to
Decentralized
Urban Flooding
Integration of
2

3. Identification Problem Identification
100
m
Source(all): Author
100m
Exst. irrigation pipe
Exst. sw network
Border of the focus area
Lowest Elevation
Highest Elevation
Incoherent Governance
Poor SW Infrastructure
Lack of Permeable
Surface Utilization
3

4. Research Question:
How can
decentralized stormwater management technologies be utilized in northeast
Güzelyurt to effectively address the risk of regular urban flooding?
Identification
Source: Author 4

5. Identification Concept Development
Source: Own diagram.
5

6. Data Precipitation Distribution
6

7. Data Surface Distribution
100
m
Permeable Surfaces
Roof Area
Road Area
Type Area (m2) % Area ROc RO (m3) % RO
Total 186,421 100 0.77 4,065 100
Roof 48,663 26 0.90 1,244 31
Road 26,234 14 0.95 708 17
Permeable 106,301 57 0.70 2,113 52
Distribution of Area and Runoff by Surface Type
7

8. Implementation Relief Channel
100
m
Permeable Surfaces
Roof Area
Road Area
Exst. sw network
Exst. Irrigation Pipe
Planned Channel
Security:
20%
Households
Conveys:
70
m3/30mm
event
Reduces:
2%
Area Load
Source: Author
8

9. Implementation Cisterns
Household Water Consumption Supplied by Harvested Rainwater
30
mm/d
< 4 m3
Total:
11,153
m3/year
House:
32
m3/year
Consumption:
0.125
m3/person/day
Cistern
5m3
Cistern
5m3
9

10. Implementation Septic Tanks and Dry Wells
Cistern Septic Tank Dry Well
01.00
10.00
16.00
24.00
Time
0.5 m3
1.0 m3
2.5 m3
3.6 m3
1 m3
2 m3
5.0 m3
5.0 m3
0 m3
0 m3
0.8 m3
3.3 m3
Cistern
5m3
Septic Tank
~5m3
Dry Well
~4m3
220
connections
Block Names
Houses connected to
Septic Tanks & Dry Wells
Names of Road SectionsR10
A
100
m
Capacity:
8.77 m3l
Remaining
Reduction
10

11. Implementation Bioswales in Parking Area
25 m
150 m2
80 m2
PP1
PP2
Retention
Capacity
PP1:
70 m3
Retention
Capacity
PP2:
40 m3
Source: Ciara Gonzalez (2011)
11

12. Implementation Technological Summary
Remaining Reduction
2% 30% 49% 4%
12

13. Analysis Cost Calculations
cost[eur]
excesswater[m3]
affected households
13

14. Analysis Stakeholder Analysis
Key Stakeholder
Source:
Felipe Gonzalez-Zapata and Richard Heeks (2015) The multiple meanings of open
government data: Understanding different stakeholders and their perspectives.
Government Information Quarterly Volume 32, Issue 4, Pages 441–452.
14

15. Analysis Cost Benefit Analysis
net present value before tax [eur]
suggested
package
centralized
solution
Source: Author
Source: Gundem Kibris(2015)
15

16. Future Implementation Timeline
16

17. Conclusion
How can decentralized stormwater management technologies be utilized in
northeast Güzelyurt to effectively address the risk of regular urban flooding?
Septic Tanks
&
Dry Wells
-Septic Tanks
-Bio swales
-Cisterns
Existing infrastructure and decentralized stormwater management
technologies can be effectively utilized, while taking water scarcity and
stakeholder needs into account within the context of environmental justice
and resource efficiency, to address urban flooding in north-east Güzelyurt
Rain Water
Harvesting
Joint
Responsibility
Low Income
Area
Addressed
Time &
Cost
Efficient
17

18. Financial
Institutional
technical
visual
Task Distribution
18

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- Cost Estimations
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References
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