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Tokat – Zile Akdoğan Deresi Havzası Yağış ve Akım Karakteristikleri
(The Characterics of Precipitation and Flows in Tokat-Zile Akdoğan Basin )

Author : Özlem AKAR  İrfan OĞUZ  
Type :
Printing Year : 2016
Number : 2016-2
Page : 206-218


Summary
Bu çalışmada, havza alanı 7.376 km2 olan Tokat – Zile Akdoğan Deresi Havzası yağış ve akış özellikleri 1987-2011 su yıllarını kapsayan dönem için araştırılmıştır. Havzada üç adet yağış istasyonu ve bir adet limnigraf bulunmaktadır. Savak, 40°18'02" Kuzey enlemi ve 35°47'23" Doğu boylamındadır. Araştırmanın 1987-2011 su yıllarını kapsayan döneminde yıllık ortalama yağış 495.5 mm, ortalama akım 27.07 mm ve ortalama su verimi 199668 m3 olarak saptanmıştır. Bu akımın 9.34 mm’si yüzey akış, 8.04mm’si yüzeyaltı akım ve 9.69 mm’si ana akımdır. Havza yıllık ortalama yüzey akış katsayısı % 2.55’tir. Havzanın 60 dakika süreli ortalama birim hidrografında pik debisi (qp) 1565 L/s, taban süresi (tb ) 3.54 saat, pike erişme süresi (tp ) 1.46 saattir. Havza yıllık su verimi hesabında kullanılan M. Turc yöntemindeki A katsayısı havza için 689.7, benzer havzaların birim hidrograflarının sentetik olarak çıkarılmasında kullanılan Snyder metodu katsayıları olan Ct=0.32 ve Cp=0.993, Mockus metodu katsayıları K=0,32 ve H=0.85 ve M.Turc metodunun A katsayısı 689.7 olarak hesaplanmıştır.

Turkish Keywords
Tokat Zile Akdoğan, Havza, Yağış, Akım, Hidroloji

Abstract
In this study; the result of hydrologic research obtained from Tokat – Zile Akdoğan Watershed of 7.376 sq.km area presented for the period of 1987-2011. In the watershed has three pluviograph and one linnigraph. The sluice locates at the 40°18'02" North latitude and the 35°47'23" East longitude. The average annual precipitation of watershed for the period of 1987-2011 is 495.5 mm, average runoff is 27.07 mm and average water yield is 199668 m3. Surface flow, subsurface flow and base flow values of this flow were found to be 9.34 mm, 8.04 mm and 9.69 mm respectively. The average annual coefficient of surface flow was found as 2.55 %. The Elements of average Unit Hydrograph for the watershed were calculated as qp = 1565 L/sec, tb = 3.54 hours and tp = 1.46 hours. The coefficient of Snyder`s Ct and Cp , Mockus`s H and K and M.Turc method’s A were calculated as Ct=0.32, Cp=0.993, K=0.32, H=0.85 and A=689.7 respectively.

Keywords
Tokat Zile Akdoğan, Watershed, Rainfall, Precipitation, Hydrology

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