Investigation of the effect of climate change on runoff curve number by using GIS and RS (case study: Mansourabad and Navroud watersheds)

Document Type: Original Article


1 Hydraulic Structures,Agriculture Faculty, Birjand University.

2 Regional Water Corporation of Southern Khorasan .

3 Water Engineering Groups, ,Agriculture Faculty, Birjand University.

4 Faculty Member of Water Engineering Groups, ,Agriculture Faculty, Birjand University.


  Application of gepraphic information system and image processing in evaluation of surface runoff of a watershed in recent years has increased greatly. In the study , the runoff curve number map was prepared using geographic information system (GIS)and Landsat Sattelite Images (ETM+)for two watersheds of Mansourabad in southern Khorasan province and Navroud in Gilan province based on the factors of hydrologic soil group, land use, land cover and hydrologic conditions. The land cover map was perpared by NDVI index and  watersheds were classified by three classes of good, fair and weak sitation vegetation in Mansourabad watershed but for Navrood watershed, Vegetation had three classes of excellent, good and moderate. Land use map of this watersheds  was prepared from Landsat Sattelite Images and Soil Hydrologic Group addition to soil, slope and Landuse, geology  maps plus filed investigations. From Coalition of GIS shape files and SCS tables, runoff curve number map was extrcated for both watersheds. In evaluation of  accuracy of Curve Number, maximum flood discharge in both two watersheds was simulated by HEC-HMS model  and compared with observed data. Low errorr discrepancy between simulated and observed dischrge showed that curve number for both basins was calculated with high accurcy. So results showed that weithing runoff curve number   in MansoorAbad basin is highly greater than Navrood basin, that this parameter can cause destructive floods  during hight intensity events.


- اکبرپور، ا، و شریفی، م.ب. (1385). تخمین شماره منحنی رواناب با استفاده از سنجش از دور وسیستم اطلاعات جغرافیایی(مطالعه موردی: حوضه آبریز کامه)، در مجموعه مقالات هفتمین سمینار بین المللی مهندسی رودخانه، دانشگاه شهید چمران اهواز، 357-365.

-یعقوب زاده، م. (1387). تعیین شماره منحنی حوضه آبریز با استفاده از سیستم اطلاعات جغرافیایی (GIS) و سنجش از دور (RS) (مطالعه موردی: حوضه آبریز منصورآباد بیرجند)، پایان نامه کارشناسی ارشد، دانشگاه شهید باهنر کرمان، ص150.

-ASCE, (1993). Criteria for evaluation of watershed models, J. Irrig.drain. Engrg, 119(3): 425-449.

-Foher, N., Haverkamp, S,. Eckhardt, K and Frede, G. (2001). Hydrologic response to land use change on the catchment scale, physics and chemistry of earth, part B: Hydrology, oceans and Atmosphere, 26, pp.577-582.

-French, R.M., Miller, J.J., Dettling, CH and Carr, J.R.  (2006). “Use of remotely sensed data to estimate the flow of water to a playa lake”, Journal of Hydrology, pp. 62-81.

-Gandini, M.L and Usunoff, E.J. (2004). SCS curve number estimation using remote sensing NDVI in a GIS environmental, Journal of Environmental Hydrology, 12, pp.168-179.

 -InciTekeli, Y., Akguül, O., Dengiz. A and Aküzüm ,T. ( 2006). Estimation of flood discharge for small watershed using SCS curve number and geographic information system, River Basin Flood Management Journal, pp. 527-538.

- Mather, P.M. (1999). Computer Processing of Remotely-sensed Images, John Wiley and Sons.NewYork, p. 332

- Mishra, S.K., Tyagi, J.V., Singh, V.P.,  Ranvir Singh,D. (2006). SCS-CN-based modeling of sediment yield, Journal of Hydrology, pp. 301-322.

-Nayak, R.T and Jaiswal, R.K. (2003). Rainfall-Runoff modeling using satellite data and GIS for Bebas river in Madhta Pradesh, Journal-CV, 47-50.

-Symeonahis, E., Koukoulas, S., Calvo-Case, A., Aruau-Rosalen, E and Makris, I. (2005). A land use change and land degradation study in Spain and Greece using remote sensing and GIS. International Archives of Photogrammetry and Remote Sensing, XXth ISPRS Congress, Istambul, 16-23 July.

-Titmarsh, G.W., Cordery, I and Pilgrim,F. (1995). Calibration procedures for the Rational and USSCS design flood methods, Journ. Hydraulic Engg., Amer. Soc. Civ. Engrs., 121, pp. 61-70