Classification and identification of changes in river flow regime using the Indicators of Hydrologic Alteration (IHA) Case study: (The Khormarud River- Tilabad Watershed- Golestan Province)

Document Type : Research Article

Authors

1 Ph.D. Student of Watershed Management, Gorgan University of Agricultural Sciences and Natural Resources, Iran

2 Professor, Department of Desert Management, Gorgan University of Agricultural Sciences and Natural Resources, Iran

3 Associate Professor, Department of Watershed Management, Gorgan University of Agricultural Sciences and Natural Resources, Iran- Corresponding author

4 Associate Professor, Department of Biodiversity and Ecosystem Management, Environmental Sciences Research Institute, Shahid Beheshti University, Iran

Abstract

In this research, using the Indicators of Hydrologic Alteration (IHA), the hydrologic regime alteration in two periods "natural flow regime" and "altered flow regime" at the hydrometric station of Nodeh Khandus, located at the outlet of the Tilabad Watershed in Golestan Province was investigated. On the basis of IHA method, a total of 67 statistical parameters are calculated using IHA7 software. These parameters are subdivided into 2 main groups, the IHA parameters and the Environmental Flow Component (EFC) parameters. A significance count used to determine the significant difference between the median values of the pre- and post- alterating periods. To classify flow regime, the classification method developed by Oueslati et al. was used. The results of this research indicate that the annual flow regime during the period of 1968 to 2016 from "Perennial Runoff" to "Perennial Flashy" has altered. Human activities in the Tilabad Watershed can be responsible for the magnitude of low flows, the minimum and mean monthly discharge, frequency and duration of high pulses, duration of small and large floods, indicators of annual minimum, 1, 7 and 90-day means, as well as indicators of annual maximum 7 and 90-day means. On the contrary, the agents are responsible for an increase the magnitude and frequency of small and large floods peak flow, number of zero-flow days, frequency of extreme low flows during each water year, annual maximum, 1-day mean, as well as changein timing of annual extreme water conditions, frequency and duration of high and low pulses.

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Office of Deputy for Strategic Supervision, Ministry of Energy. Guideline for Finding Aquatic Ecosystems Environmental Water Requirement, Vice Presidency For Strategic Planning and Supervision, Iran. 2012; 150-205. [Persian]
2. Dyson M, Bergkamp G, Scanlon J. Flow. The Essentials of Environmental Flows. IUCN,Gland, Switzerland and Cambridge, UK. 2003.
3. Tharme R.E. "A global persprctive on environmental flow assessment: emerging trends in the development and application of environmental flow methodologies for rivers", Published online in Wiley InterScience. 2003.
4. Richter B.D, Davis M.M, Apse C, Konrad C.. A presumptive standard for environmental flow protection. River Res. 2011; 28: 1312–1321.
5. Richter BD, Baumgartner JV, Powell J, Braun DP. A method for assessing hydrologic alteration within ecosystems. Conserv Biol.1996; 10(4):1163–1174.
6. Yang T, Zhang Q, Chen Y.D, Tao X. A spatial assessment of hydrologic alteration caused by dam construction in the middle and lower Yellow River, China. Hydrol Process. 2008; 22: 3829–3843.
7. Fernandez J.A, Martinez C, Magdaleno F. Application of indicators of hydrologic alterations in the designation of heavily modified water bodies in Spain. Environ. Sci. 2012; 16: 31–43.
8. Papadaki C, Soulis K, Muñoz-Mas R, Martinez-Capel F, Zogaris S, Ntoanidis L. Potential impacts of climate change on flow regime and fish habitat in mountain rivers of the south-western Balkans. Sci. Total Environ. 2016; 540: 418–428.
9. Peñas F.J, Barquín J, Álvarez CAssessing hydrologic alteration: evaluation of different alternatives according to data availability. Ecol. Indic. 2016; 60: 470–482.
10. Richter B.D, Baumgartner J.V, Wigington R, and Braun D. P. How much water does a river need? Freshwater Biology. 1997; 37: 231-249.
11. Mathews R, Richter B.D. Application of the indicators of hydrologic alteration software in environmental flow setting. J. Am. Water Res. Assoc. 2007; 43: 1400–1413.
12. Smakhtin V.U, Revenga C, Doِll, P. Taking into account environmental water requirements in global scale water resources assessments. Research Report 2 of the CGIAR Comprehensive Assessment Program of Water Use in Agriculture. Colombo, Sri Lanka: International Water Management Institute. 2004; 24 pp.
13. Salmani H, Sheikh V, Mahini M, Ownegh M. Landuse planning for minimization runoff and sediment at tilabad watershed in Golestan Province, Iran, Ph.D. thesis, Gorgan University of Agricultural Sciences and Natural Resources, Iran. 2108; 85-112. [Persian]
14. The Nature Conservancy. Indicators of Hydrologic Alteration Version 7.1 User's Manual.. 2009; 81pp.Available online at: https://www.conservationgateway.org.
15. Poff N.L. A hydrogeography of unregulated streams in United States and an examination of scale-dependance in some hydrological discriptors.Freshwater Biology.1996;36 pp:71-91.
16. Smakhtin V, Anputhas M. An assessment of environmental flow requirements of Indian river basins. Colombo, Sri Lanka: International Water Management Institute. 2006; 42 p.
17. Oueslati O, De Girolamo A.M, Abouabdillah A, Lo Porto A. Attemps to flow regime classification and characterization in Mediterranean streams using multivariate analysis. International Workshop ‘Advances in Statistical Hydrology. 2010; 23-25.
18. Huh, S., Dickey, DA., Meador, MR., Ruh, KE. Temporal analysis of the frequency and duration of low and high streamflow: years of record needed to characterize streamflow variability, Journal of Hydrology. 2005; 310: 78–94.
19. Poff NL, Ward JV. Implications of streamflow variability and predictability for lotic community structure: a regional analysis of Streamflow Patterns, Canadian Journal of Fisheries and Aquatic Sciences. 1989; 46: 1805–1818.
Volume 6, Issue 3
September 2019
Pages 651-671
  • Receive Date: 11 November 2018
  • Revise Date: 20 May 2019
  • Accept Date: 20 May 2019
  • First Publish Date: 23 September 2019
  • Publish Date: 23 September 2019