Analysis of Floods from Natural Channels in Urban Areas and Creation of Risk Map: Malatya Province Case

K�l��, Selami; �ZDEM�R, �zg�r; FIRAT, Mahmut

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Analysis of Floods from Natural Channels in Urban Areas and Creation of Risk Map: Malatya Province Case [Pamukkale Univ Muh Bilim Derg]

Pamukkale Univ Muh Bilim Derg. 2019; 25(8): 968-976 | DOI: 10.5505/pajes.2019.21347

Analysis of Floods from Natural Channels in Urban Areas and Creation of Risk Map: Malatya Province Case

Selami K�l��¹, �zg�r �ZDEM�R², Mahmut FIRAT³
¹Malatya Water and Sewerage Administration, Malatya
²Kayseri Water and Sewerage Administration, Kayseri
³�n�n� University, Civil Engineering Department, Malatya

In this study, flood simulation analysis was carried out for the natural channels in the urban area and a risk map of flood waters was formed. For this purpose, Horata channel in Malatya city center was selected as the application area where there are a total of four streams, which have the flood risk potential. The flood events observed in the past were investigated and the factors that cause it were evaluated. Flood hydrographs were obtained for 50, 100 and 500 year return periods for the Horata channel. Info-works ICM was used for flood simulation and flood analysis was performed for different recurrence periods. It was observed that stream sections were inadequate and settlement areas would be adversely affected especially for the return period of 500 years. As a result, flood propagation maps were created for each case and the affected areas were determined. According to the results of these analyzes, the regions where the risk of floods are high can be listed as follows, especially where the natural flow is disturbed, the section is constricted for bridging, the areas where meandering are formed, regions where the section is insufficient.

Keywords: Urban areas, urban floods, flood simulation, flood risk map

Kentsel Alanlarda Do�al Kanallardan Kaynaklanan Ta�k�nlar�n Analizi ve Risk Haritas�n�n Olu�turulmas�: Malatya �li �rne�i

Selami K�l��¹, �zg�r �ZDEM�R², Mahmut FIRAT³
¹Malatya Su ve Kanalizasyon �daresi (MASK�), Malatya
²Kayseri Su ve Kanalizasyon �daresi (KASK�), Kayseri
³�n�n� �niversitesi, �n�aat M�hendisli�i B�l�m�, Malatya

Bu �al��mada, kentsel alandan ge�en dere i�in ta�k�n sim�lasyon analizi ger�ekle�tirilmi� ve ta�k�n sular�n�n yay�l�m haritas� olu�turulmu�tur. Bunun i�in Malatya il merkezinde yer alan Horata deresi uygulama alan� olarak se�ilmi�tir. �al��ma alan�nda toplamda d�rt adet dere yer almakta olup bunlar i�in ge�mi�te g�zlenen ta�k�n olaylar� incelenmi� ve sebep olan fakt�rler de�erlendirilmi�tir. Uygulama alan�nda dere i�in 50, 100 ve 500 y�ll�k yinelenme s�releri i�in ta�k�n hidrograflar� elde edilmi�tir. Ta�k�n sim�lasyonu i�in Infoworks ICM yaz�l�m� kullan�lm�� ve farkl� yinelenme s�releri i�in ta�k�n analizi ger�ekle�tirilmi�tir. Analiz sonucunda her bir durum i�in ta�k�n yay�l�m haritalar� olu�turulmu� ve etkilenen b�lgeler belirlenmi�tir. �zellikle 500 y�ll�k yinelenme s�resi i�in dere kesitlerinin yetersiz kald�� ve yerle�im b�lgelerinin olumsuz etkilenece�i g�zlenmi�tir. Bu sonu�lara g�re, �zellikle do�al ak��n bozuldu�u, kesitin k�pr� ama�l� daralt�ld�� ve menderes olu�an b�lgelerde kesitin yetersiz kald��, ta�k�n riskinin daha fazla oldu�u, bu b�lgelerin ta�k�n sular�ndan daha fazla etkilendi�i g�zlenmi�tir.

Anahtar Kelimeler: Kentsel alan, �ehir ta�k�nlar�, ta�k�n sim�lasyonu, ta�k�n risk haritas�

Selami K�l��, �zg�r �ZDEM�R, Mahmut FIRAT. Analysis of Floods from Natural Channels in Urban Areas and Creation of Risk Map: Malatya Province Case. Pamukkale Univ Muh Bilim Derg. 2019; 25(8): 968-976

Corresponding Author: Mahmut FIRAT, T�rkiye
Manuscript Language: Turkish

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