GroMoPo Metadata for Chennai Coastal FEFLOW model

Authors:

GroMoPo Daniel Kretschmer

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.5 KB

Created:

Feb 08, 2023 at 8:23 p.m.

Last updated:

Feb 08, 2023 at 8:24 p.m.

Citation:

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Abstract

Coastal aquifers are always under threat of seawater intrusion due to over-extraction of groundwater. The objective here is to assess aquifer response to variation in pumping and rainfall recharge due to projected climate change by groundwater modelling in a heavily exploited aquifer. Finite element groundwater flow modelling was carried out from March 1988 to December 2030 using FEFLOW software. Steady state calibration was done to match observed and simulated groundwater head by varying aquifer parameters within the allowable range. Transient state calibration was carried out during the period March 1988 to December 2002. The calibrated model was validated by comparing the simulated and observed groundwater head from January 2003 to December 2012. Groundwater head was predicted for a period until 2030 under eight different scenarios of changes in pumping and rainfall recharge. This prediction indicated that 10% increase of recharge and 10% decrease of pumping causes 3 m and 6 m increase in groundwater head in upper and lower aquifers, respectively, by the end of 2030. Groundwater recharge can be increased by rejuvenation of existing surface water bodies, check dams and construction of proposed check dams. Thus, increase of groundwater recharge and decrease in well field pumping is achievable to restore this heavily exploited coastal aquifer in another 20 years.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

India

North Latitude

13.4490°

East Longitude

80.3871°

South Latitude

13.1690°

West Longitude

80.0376°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.2166/nh.2015.211
Depth	50
Scale	101 - 1 000 kmÂ²
Layers	25
Purpose
GroMoPo_ID	410
IsVerified	True
Model Code	Feflow
Model Link	https://doi.org/10.2166/nh.2015.211
Model Time	1988-2030
Model Year	2016
Model Authors	Pandian, RS; Nair, IS; Lakshmanan, E
Model Country	India
Data Available	Report/paper only
Developer Email	elango@annauniv.edu
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	India
Publication Title	Finite element modelling of a heavily exploited coastal aquifer for assessing the response of groundwater level to the changes in pumping and rainfall variation due to climate change
Original Developer	No
Additional Information
Integration or Coupling
Evaluation or Calibration	Dynamic water levels
Geologic Data Availability	No

How to Cite

GroMoPo, D. Kretschmer (2023). GroMoPo Metadata for Chennai Coastal FEFLOW model, HydroShare, http://www.hydroshare.org/resource/0fc67b36fb4e45a0a226ab3b09b7d085

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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