EFFECTS OF LAND USE CHANGE ON FLOODS IN GOLESTAN DAM DRAINAGE BASIN

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SAGHAFIAN B.; FARAZJOU H.; SEPEHR ADEL; NAJAFI NEJAD A.

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Paper Information

Journal: IRAN-WATER RESOURCES RESEARCH Year:2006 | Volume:2 | Issue:1 (4) Page(s): 18-28

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Title

EFFECTS OF LAND USE CHANGE ON FLOODS IN GOLESTAN DAM DRAINAGE BASIN

Author(s)

SAGHAFIAN B. | FARAZJOU H. | SEPEHR ADEL | NAJAFI NEJAD A. | Issue Writer Certificate

Keywords

PEAK DISCHARGEQ4

FLOODQ2

LAND USE CHANGESQ3

HYDROLOGIC MODELQ4

GOLESTAN DAM DRAINAGE BASINQ4

Abstract

One of the major governing factors in FLOOD trends is the changes in land use. Golestan Dam basin in North- East of Iran has recently experienced devastating FLOODs. LAND USE CHANGES are believed to be partially reponsible for this FLOOD intensification. In this paper, using GIS tools and HEC-HMS model, the effects of changing vegetation cover on FLOOD hydrographs in Golestan Dam basin are assessed. The FLOOD condition corresponding to two limiting land use scenarios are then evaluated. Landuse maps from 1967 and 1996 along with the soil map were overlaid using GIS tools to produce CN maps. HEC-HMS hydroloigc model was calibrated and validated based on three methods; curve number (CN) method for infiltration, SCS unit hydrograph for subwatershed rainfall-runoff routing, and Muskingum method for river routing. The results show that recent changes in land use has caused upward trend in FLOOD magnitudes of different frequencies, e.g., 31.7 and 17.8 percent increase in FLOOD peak corresponding to 5-yr and l000-yr return periods, respectively. This impact reduces as return period increases. Also, the results of deteriorating land use in the pessimistic scenarios show that loss of forests and rangelands increases FLOOD peaks of 5 and l000-yr by as much as 35 and 24 percent, respectively.

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APA: Copy

SAGHAFIAN, B., FARAZJOU, H., SEPEHR, ADEL, & NAJAFI NEJAD, A.. (2006). EFFECTS OF LAND USE CHANGE ON FLOODS IN GOLESTAN DAM DRAINAGE BASIN. IRAN-WATER RESOURCES RESEARCH, 2(1 (4)), 18-28. SID. https://sid.ir/paper/100283/en

Vancouver: Copy

SAGHAFIAN B., FARAZJOU H., SEPEHR ADEL, NAJAFI NEJAD A.. EFFECTS OF LAND USE CHANGE ON FLOODS IN GOLESTAN DAM DRAINAGE BASIN. IRAN-WATER RESOURCES RESEARCH[Internet]. 2006;2(1 (4)):18-28. Available from: https://sid.ir/paper/100283/en

IEEE: Copy

B. SAGHAFIAN, H. FARAZJOU, ADEL SEPEHR, and A. NAJAFI NEJAD, “EFFECTS OF LAND USE CHANGE ON FLOODS IN GOLESTAN DAM DRAINAGE BASIN,” IRAN-WATER RESOURCES RESEARCH, vol. 2, no. 1 (4), pp. 18–28, 2006, [Online]. Available: https://sid.ir/paper/100283/en

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