GroMoPo Metadata for Ovre Romerike aquifer MODFLOW model

Authors:

GroMoPo Emilia Leijnse

Owners:

gromopo_admin

Type:

Resource

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Created:

Feb 08, 2023 at 2:48 a.m.

Last updated:

Feb 08, 2023 at 2:49 a.m.

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Abstract

Using a modified version of the USGS MODFLOW code, coupled with a Penman- Grindley type recharge model, it has been possible to produce a transient, 3- dimensional groundwater flow model of the Ovre Romerike aquifer. A steady state model has been calibrated against 183 regional water level observation data from autumm 1975 and against the flows in groundwater-fed springs and streams. The distribution of hydraulic conductivity calibrated using the steady state model was then used to simulate water table variations over a period in excess of 30 years at 3 observation wells. The results show a satisfactory fit with real data, allowing for the limited spatial resolution of the model. A sevenmonth running average filter has been applied to the re- charge data to simulate the damping effects of the unsaturated zone on recharge naxima and minima, resulting in an even better fit. The modelling work has enabled the project's participants to obtain a deeper understanding of the hydraulics of the aquifer, and has also indicated that hydraulic conductivity values obtained from grain size distributions tend to lead to underestimates of aquifer transmissivity. The model provides a framework for further modelling work on contaminant transport at Trandum land- fill.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Norway

North Latitude

60.3917°

East Longitude

11.1783°

South Latitude

60.1849°

West Longitude

11.0053°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI
Depth	50
Scale	101 - 1 000 kmÂ²
Layers	2-5 layers
Purpose	Groundwater resources;Groundwater contamination
GroMoPo_ID	139
IsVerified	True
Model Code	MODFLOW
Model Link	https://www.ngu.no/en/publikasjon/time-variant-numerical-groundwater-flow-model-vre-romerike-aquifer-southern-norway
Model Time	SS
Model Year	1993
Model Authors	N. Odling, D. Banks, A. Misund
Model Country	Norway
Data Available	Report/paper only
Developer Email	Not known
Dominant Geology	Unconsolidated sediments
Developer Country	Norway
Publication Title	A time-variant numerical groundwater flow model for the Ovre Romerike aquifer, Southern Norway
Original Developer	No
Additional Information	Using the U.S.G.S MODF LOW code , coup led with a Penman-Grindley type recharge model, it has been possible to produce a transient , 3-dimensional groundwater flow model of the Romerike aquifer. The MODFLOW code was modified to ailow the water table to rise across the boundary of aquifer layers, and the recharge model was improved to ailow for snow storage effects during winter.
Integration or Coupling	Contaminant transport
Evaluation or Calibration	Static water levels
Geologic Data Availability

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Ovre Romerike aquifer MODFLOW model, HydroShare, http://www.hydroshare.org/resource/59915e6a81314eedbd136f4c60e4c52b

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

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

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