---
title: "Vomb Trough Water Resources groundwater assessment, Vomb Trough, southern Sweden; 16 new observation wells installed"
sdDatePublished: "2026-05-23T13:22:00Z"
source: "https://www.interregnorthsea.eu/sites/default/files/2026-05/4_SWEDEN_BT_Final_Brussels_12thmay.pdf%20%20-%20%20Hersteld.pdf"
topics:
  - name: "environmental policy"
    identifier: "medtop:20000423"
  - name: "water pollution"
    identifier: "medtop:20000429"
  - name: "water supply"
    identifier: "medtop:20000270"
  - name: "climate change"
    identifier: "medtop:20000418"
  - name: "scientific research"
    identifier: "medtop:20000735"
locations:
  - "Brussels-Capital"
  - "Lund"
  - "Sweden"
---


Vomb Trough Water Resources groundwater assessment, Vomb Trough, southern Sweden; 16 new observation wells installed

Vomb Trough Water Resources
Ankita Prayag, PhD student, Lund University, ankita.prayag@tg.lth.se
Kristofer Hägg, Research leader, Sydvatten, kristofer.hagg@sydvatten.se
Peter Dahlqvist, Senior Geologist, SGU, peter.dahlqvist@sgu.se
Policy day, Brussels, 19-21 May 2026

Challenges
Water resources in southern
Sweden
• Decreased water levels in lakes
• Low groundwater levels
• Brownification
• Nutrient loads

1. Groundwater resources assessment within the Trough
2. Monitoring of the seasonal variations of Wetlands
3. Monitoring and assessment of an infiltration pond at Vomb WW
Pilot Goals

1. Hydrogeological model
for the Vomb Trough
2. Wetland investigation
3. Monitoring Vomb WW
Scale
Pilot Scales

• Existing wells used for extraction data
• Monitoring network is insufficient, thus,
• 16 new observation wells installed for model
calibration
• Detailed aquifer delineation
Pilot Achievements- Vomb Trough

• NW-SE cross-section based on
SkyTEM data showing resistivities and
elevation.
• Before detailed interpretation, the
initial conceptual model is prepared
for aquifer grouping.
• Groundwater is present in both the
soil layers and bedrock aquifers.
NW
SE
Pilot Achievements- Vomb Trough

•
7 observation wells around the
Wetland -- measurement of
changes in the GW-level
•
DCIP surveys of time steps to
assess changes in subsurface
moisture and resistivity– Ground
level rises
T0
T1
T0
Pilot Achievements- Wetland

Full water spread and water saturation in depth
Resistivity ratios
T0 is baseline and T1, T2… later timesteps
1.
Integrated Hydrogeophysical monitoring reveals infiltration pathways, clogging-mounding effects
dominated by inflow rates and soil layers.
2.
Strengthened knowledge and refined strategies of pond management.
3.
Adapted monitoring instrumentation for better performance for future planned ponds.
Pilot Achievements
- Vomb Pond
Direct Current Resistivity and Induced
Polarisation (DCIP) monitoring system
Installation
Photo credits: Torleif Dahlin

Stakeholder involvement
Vomb Trough Municipalities and decision makers
Vomb Pond Field visit for project
partners

Future Projects
• MAR Optimization research,
including lab measurements
• Climate & Blue Transition:
Supply management +
nature-based solutions
• 3D Groundwater
Model: Predictive
model with
climate scenarios
• Wetland–Aquifer
Study: Long-term
monitoring

Thank you for
your attention!
Questions, please?