Estimation of Environmental Water Requirement and Ecological Water Level of Parishan Wetland with the Purpose of Transferring Water from Nargesi Dam and Restoration of the Wetland

Document Type : Research Paper


1 Department of Fisheries, Natural Resources Faculty, University of Tehran, Karaj, Iran.

2 Assistant Professor, Department of Agriculture and Natural Resources, Faculty of Engineering, Payame Noor University, Tehran, Iran.

3 Iran Water Resources Management Company, Ministry of Energy, Tehran, Iran.


The purpose of this research was to calculate the environmental water requirement and ecological water level of Parishan wetland to transfer water from Nargesi Dam. Based on hydrological information, there is no relationship between the volume of water in the wetland, the amount of rainfall and runoff input. Therefore, the main factor of wetland death is the improper use of water in agriculture in addition to drought. To determine the hydrological water right, the balance formula of lakes was used. Accordingly, the environmental water requirement is 15.05 million cubic meters per year in the case of stop-cultivation plan, and 35.95 in case of limiting 50% of agricultural wells. If the first scenario is implemented, without drought and water transfer after 3.5 years, the groundwater will reach to zero level and then the restoration process will begin, but with the implementation of the second scenario, this time is 5 years and in case of water transfer from the dam, it will be accelerated. Flagship species include Dalmatian pelican, Golden barb and common reed. The year of 2007 was the last year that the entire area had water. Multi Species Indicators (MSI) was 80 and desirable. In 2007, the amount of fishing was 64 tons and it was desirable. The area of ​​reeds in the same year was 220 hectares. Therefore, the minimum ecological level, based on the volume of wetlands in 2007, is 39.3 million cubic meters, but the ecological balance level based on the average volume of wetlands in watery years is 51.6 million cubic meters. Thus, using hydrological and ecological indicators determine the minimum and optimal volume for the restoration of the wetland to its natural functions, and the role of accurate statistics of indicator organisms is very important.


Baqerzadeh, K. M. (2008). Requirements for determining the environmental water needs of wetlands. Environmental Committee of Large Dams. (In Farsi)
Burfield, I. & Bommel, F. V. M. (2004). Birds in Europe: Populations, Estimates, Trends and Conservation Status. Bird Life Conservation Series (No 12.). Birdlife International. Cambridge, UK.
Danekar, A. & Samadi, K. B. (2021). The role of efficient conservation management to support the biodiversity of wetlands in Fars province. In: Proceedings of the first Fars Biodiversity Conference, Shiraz university, Shiraz, Iran. (In Farsi)
Delany, S. & Scott, D. (2006). Waterbird Population Estimates (4th ed.). Wetlands International. Wageningen. The Netherland.
Department of Infrastructure. (2004). A guide to the water sharing plan for the gwydir regulated river water source. Planning and Natural Resources.
Ducarme, F., Luque, G. M. & Courchamp, F. (2012). What are "charismatic species" for conservation biologists. BioSciences Master Reviews. Retrieved 19 December 2013.
Fars Regional Water Company. (2016). Updating the balance of water resources Study areas of Hilleh catchment area and small problems on both sides leading to 2010-2011. Volume 5: Water Resources Assessment, Water Resources Balance Report, Parishan Lake Study Area. Ministry of Energy, Iran Water Resources Management Company. (In Farsi)
GorjiShani, R. & Barani, G. A. (2017). Evaluation of the Hawizeh Marshes Water Requirements with Respect to Dust Control and Improvement in Environmental Conditions. Journal of Hydraulics, 12(3), 13-27. (In Farsi)
Guide to Determining the Water requirements of Wetlands. (2014). Iran Wetlands Conservation Plan. Tehran: Golden publication, 188 pages. (In Farsi)
Hashemi, S., Majidzadeh, T. M. R. & Musavi, N. R. (2016). Brown trout functional flows range, based on morphologic and physical habitat parameters in Lar Headwaters. Journal of natural environment (Iranian Journal of natural environment), 16(3), 865-880. (In Farsi)
Headquarter of Department of Environmental Protection of Fars Province. (2021). Investigation of Water transfer from Nargesi dam to Parishan wetland. 1st phase. Parishan Wetland Rehabilitation Plan. (In Farsi)
Headquarter of Environmental Protection of Fars. (2010). Comprehensive plan for the protection of Parishan wetlands. Parishan Wetland Comprehensive Management Program. (In Farsi)
Iran Water Resources Management Company. (2016). Updating the balance of water resources Study areas of Hilleh catchment area and small problems on both sides leading to 2010-2011. (Vol 5). Ministry of Energy. (In Farsi)
Iran Wetlands Conservation Plan. (2014). Guide to Determining the Water Needs of Wetlands. Tehran: Golden publication. (In Farsi)
Kaboli, M., Aliabadian, M., Tohidifar, M., Musavi, S. B. & Roslar, K. (2016). Iran’s Encyclopedia of Bird. Department of Environment Islamic republic of Iran. (In Farsi)
Modaberi, H. & Shokuhi, A. R. (2019). Using Eco-Hydrologic Methods in Determining Anzali Wetland Environmental Water Requirement. Iran-Water Resources Research, 15(3), 91-104. (In Farsi)
Naderi, M. H., Zakerinia, M. & Salarijazi, M. (2018). Application of the PHABSIM model in Explaining the Ecological Regime of the River in order to Estimate the Environmental Flow and Compare with Hydrological Methods (Case Study: Gharasoo River). Ecohydrology, 5(3), 941-955. (In Farsi)
Nagy, S. & Langendoen, T. (2017). Flyway trend analyses based on data from the African-Eurasian Waterbird Census from the period of 1967-2015. Wetlands International. Ede, The Netherlands.
Piri, H. (2011). Estimation of environmental water needs of Hamoon wetland. Journal of wetland ecobiology, 2(6), 57-69. (In Farsi)
Ramsar. (2010). Ramsar handbooks for the wise use of wetlands (4th ed.): Water allocation and management (Vol.10). Ramsar Convention Secretariat, Gland, Switzerland.
Rees, C. V. (2018). Project: The Movement Ecology and Conservation of the Hawaiian gallinule (Gallinula galeata sandvicensis), Wetland Conservation in Hawai'i and the Need for Flagship Species.
Rezaei Tavabe, K. & Samadi, K. B. (2021). Investigation of the possibility of invasive species entering Parishan wetland due to water transfer from Nargesi dam by studying the biodiversity of Parishan wetland and Dalaki river. In: Proceedings of the first Fars Biodiversity Conference, Shiraz university, Shiraz, Iran. (In Farsi)
Rezaei Tavabe, K., Samadi, K. B. & Zare, G. A. (2021). Investigation of biological indicators and flag in determining the ecological water content of Parishan wetland. In: Proceedings of the first Fars Biodiversity Conference, Shiraz university, Shiraz, Iran. (In Farsi)
Sedighikia, M., Ayyoubzadeh, S. A. & Hajiesmaeili, M. (2017). Modification of Tennant and Wetted Perimeter method in Simindasht Basin. Tehran Province. Civil Engineering Infrastructures Journal, 50(2), 221-231.
Sefidian, S., Dehghani, A. A., Rezaei, H. R. & Fadakar, D. (2016). Effective Ecological Factors in Determining the Environmental Requirement Water of Wetlands. Proceedings of the 2nd international conference IALE-IRAN, Iran. (In Farsi)
Shang, S. (2018). Simplified lake surface area method for the minimum ecological water level of lakes and wetlands. Water, (10), 1-10.
Shang, S. H. (2013). Lake surface area method to define minimum ecological lake level from level–area–storage curves. J. Arid Land, (5), 133–142.
Taghavi, K. S., Reiazi, B. & Taghavi, L. (2014). Determination of environmental water requirement of Miankaleh wetland. Journal of Environmental science and technology, 16(2), 101-109. (In Farsi)
Walpole, M. J. & Leader, W. N. (2002). Tourism and Flagship Species in Conservation. Biodiversity and Conservation, 11(3), 543–547.
Wetlands International. (2015). Report on the Conservation Status of Migratory Waterbirds in the Agreement Area (6th ed.) (CSR6), UNEP/AEWA/MOP6.14. UNEP/AEWA, Bonn, Germany. from
Yang, W. (2011). A multi objective optimization approach to allocate environmental flows to the artificially restored wetlands of China’s yellow river delta. Ecological Modelling, 222, 261–267.