Details
| Original language | English |
|---|---|
| Pages (from-to) | 439-449 |
| Number of pages | 11 |
| Journal | Groundwater for Sustainable Development |
| Volume | 8 |
| Early online date | 12 Jan 2019 |
| Publication status | Published - Apr 2019 |
Abstract
Heavy groundwater withdrawal results in aquifer compaction and increases the risk of land subsidence hazard with significant economic, environmental, and social consequences. Having an accurate model for hydraulic pressure loss and groundwater level changes is one of the crucial factors in proper modeling and evaluation of land subsidence hazard. This paper investigates dynamics of groundwater variations in Tehran aquifer. By analyzing a comprehensive geological and hydrological data such as alluvium depths, hydraulic conductivity, piezometric measurements, and pumping well information, we model the hydraulic heads and evaluate the hydraulic conductivity. For validation of the model, groundwater level changes resulting from the model are compared with piezometric measurements for the period 2006–2011. The comparison shows a good consistency between the predicted and observed hydraulic head values with the maximum absolute error of less than 7 m and RMS error of about 5 m, that is about 2% error, considering that the hydraulic head values are between 850 and 1250 m. This shows the capability and accuracy of the proposed model to simulate and predict the aquifer hydraulic head distribution and its changes. The model also indicates high hydraulic conductivity in the northern and central parts of Tehran Plain, which is attributed to the river sedimentation there.
Keywords
- Groundwater modeling, Hydraulic conductivity, Subsidence, Tehran aquifer
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Environmental Science(all)
- Environmental Chemistry
- Social Sciences(all)
- Geography, Planning and Development
- Environmental Science(all)
- Water Science and Technology
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In: Groundwater for Sustainable Development, Vol. 8, 04.2019, p. 439-449.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modeling groundwater level fluctuations in Tehran aquifer
T2 - Results from a 3D unconfined aquifer model
AU - Karimi, L.
AU - Motagh, M.
AU - Entezam, I.
N1 - Funding Information: The authors wish to thank Tehran Regional Water Authority for supplying the hydrogeology data and Geological Survey of Iran for supplying Geological data.
PY - 2019/4
Y1 - 2019/4
N2 - Heavy groundwater withdrawal results in aquifer compaction and increases the risk of land subsidence hazard with significant economic, environmental, and social consequences. Having an accurate model for hydraulic pressure loss and groundwater level changes is one of the crucial factors in proper modeling and evaluation of land subsidence hazard. This paper investigates dynamics of groundwater variations in Tehran aquifer. By analyzing a comprehensive geological and hydrological data such as alluvium depths, hydraulic conductivity, piezometric measurements, and pumping well information, we model the hydraulic heads and evaluate the hydraulic conductivity. For validation of the model, groundwater level changes resulting from the model are compared with piezometric measurements for the period 2006–2011. The comparison shows a good consistency between the predicted and observed hydraulic head values with the maximum absolute error of less than 7 m and RMS error of about 5 m, that is about 2% error, considering that the hydraulic head values are between 850 and 1250 m. This shows the capability and accuracy of the proposed model to simulate and predict the aquifer hydraulic head distribution and its changes. The model also indicates high hydraulic conductivity in the northern and central parts of Tehran Plain, which is attributed to the river sedimentation there.
AB - Heavy groundwater withdrawal results in aquifer compaction and increases the risk of land subsidence hazard with significant economic, environmental, and social consequences. Having an accurate model for hydraulic pressure loss and groundwater level changes is one of the crucial factors in proper modeling and evaluation of land subsidence hazard. This paper investigates dynamics of groundwater variations in Tehran aquifer. By analyzing a comprehensive geological and hydrological data such as alluvium depths, hydraulic conductivity, piezometric measurements, and pumping well information, we model the hydraulic heads and evaluate the hydraulic conductivity. For validation of the model, groundwater level changes resulting from the model are compared with piezometric measurements for the period 2006–2011. The comparison shows a good consistency between the predicted and observed hydraulic head values with the maximum absolute error of less than 7 m and RMS error of about 5 m, that is about 2% error, considering that the hydraulic head values are between 850 and 1250 m. This shows the capability and accuracy of the proposed model to simulate and predict the aquifer hydraulic head distribution and its changes. The model also indicates high hydraulic conductivity in the northern and central parts of Tehran Plain, which is attributed to the river sedimentation there.
KW - Groundwater modeling
KW - Hydraulic conductivity
KW - Subsidence
KW - Tehran aquifer
UR - http://www.scopus.com/inward/record.url?scp=85060935926&partnerID=8YFLogxK
U2 - 10.1016/j.gsd.2019.01.003
DO - 10.1016/j.gsd.2019.01.003
M3 - Article
AN - SCOPUS:85060935926
VL - 8
SP - 439
EP - 449
JO - Groundwater for Sustainable Development
JF - Groundwater for Sustainable Development
ER -