Estimation of Surface Runoff In Northeastern Missan Governorate by Using (Nrcs-Cn) Technique And Gis

Authors

  • Alaa M. Atiaa Geology Department, Science College, Basra University, Iraq. Author
  • Mukdad H. Aljabbari Geology Department, Science College, Baghdad University, Iraq. Author
  • Ayser M. Al-Shamma’a Geology Department, Science College, Baghdad University, Iraq. Author

DOI:

https://doi.org/10.17656/jzs.10344

Keywords:

Surface runoff, NRCS-CN technique, GIS, Missan Governorate, Iraq

Abstract

In this study, an attempted was made to estimate average of annual total surface runoff in the northeastern Missan Governorate, south of Iraq by using Natural Resources Conservation Services Curve Number (NRCS – CN) empirical technique in GIS platform. Thematic layers of soil hydrological groups and LULC were created using ArcGIS 9.3 software. Intersection of these two thematic layers generated a map with new polygons representing the merged hydrological soil group and LULC. The appropriated CN values adapted from different sources and technical release of United State of Department of Agriculture (USDA) were assigned manually for each new merged polygon. The curve numbers for different antecedent moisture content (AMC) were calculated as 38, 59, 77 for dry, normal, and wet soil conditions. The associated maximum potential retention for each AMC were calculated as 75,87, 176.51, and 414.42 for dry, normal, and wet soil moisture conditions. Application of the method showed that the average annual runoff depth is 0.36 mm. This figure was multiplied by the area of the study area (1856) km2 to get the total average of runoff volume 7424000m3  which represents 0.0003 from the total annual average of rainfall. The applied method is robust and easy to implement and could be used to roughly estimate the surface runoff with minimal data.

References

Al-Jabari, S. J. Estimation of runoff for agricultural watershed using SCS curve number and

GIS, Master thesis, Birzeit University, Palestine, 91p, 2007.

Anderson, M. G., McDonnell, J.J. Encyclopedia of Hydrological Sciences, John Wiley and

Sons, Inc., 5 volume set, 3456 p, 2005.

Chow, V. T., Maidment, D. K., and Mays, L. W. Applied Hydrology, McGrow-Hill Book

Company, New York, USA. 588p, 2002.

Dutta S., A. Mishra, S. Kar, S. Panigraphy.. Estimating spatial curve number for

hydrological response analysis of a small watershed. 6(2): 57-67,2006.

Mabboubeh, E., S. Lai, H. Mohd, A. Ismail.. Application of natural resources conservation

service – curve number method for runoff estimation with GIS in the Kardeh watershed,

Iraq. European J. of Scientific Research. 34(4): 575-590,2009.

Manoharam, A. and Murugappan, A. Estimation of runoff in an ungagged rural watershed,

Tamilandu State, India. International J. of Engineering Sciences and Technology. 4(2): 449

– 456,2012.

Melesse, A. M. and Shih, S. F. Spatially distributed storm runoff depth estimation using

Landsat images and GIS, Computes and Electronic in Agriculture, 37: 173-183,2002. DOI: https://doi.org/10.1016/S0168-1699(02)00111-4

Patil, J. P., A. Saragi, O. P., Singh, A. K. Singh, T. Ahmed,. Development of a GIS –

interface for estimation of runoff from watersheds, Water Resource Management, 22(9):

– 1239, 2008.

Patil, J., A. Sarangi, A. K. Singh, T. Ahmed.. Evaluation of modified CN methods for

watershed runoff estimation using a GIS – based interface. Biosystem Engineering. 100(1):

-146, 2008.

SCS, Hydrology National Engineering Handbook, Supplement A, Section 4 Chapter 10,

Soil Conservation Service, USDA, Washington, DC, 1956.

U. S. Department of Agriculture (USDA). Urban hydrology for small watersheds, Technical

Release No. 55, Washington DC, 1986.

U. S. Department of Agriculture, Soil Conservation Service (USDA-SCS). National

Engineering Handbook, Section 4, Washington, DC,1975.

Zahraa, GM., A. Hachum . Estimating runoff coefficient for water harvesting at Tal – Abata

area, Nineveh governorate. 31(5): 41-52, 2013.

Published

2014-10-16

How to Cite

Estimation of Surface Runoff In Northeastern Missan Governorate by Using (Nrcs-Cn) Technique And Gis. (2014). Journal of Zankoy Sulaimani - Part A, 16(4), 31-47. https://doi.org/10.17656/jzs.10344

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