Interaction of esker groundwater with headwater lakes and streams

Pertti Ala-Aho, Pekka M. Rossi, Bjørn Kløve

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Groundwater-surface water interactions were studied in a Finnish esker aquifer system where some lakes suffer from periodic water level decline and others from eutrophication. Natural tracers (Ca2+, SiO2 and PO43-) were used on the aquifer scale and seepage meter measurements and water level recordings on the single lake scale to better understand the complex interactions between groundwater, lakes and streams in the area. The natural tracers showed that lakes located in lower landscape positions and connected with streams were richer in tracer concentrations and that their water chemistry resembled that of the groundwater. On the other hand, closed basin lakes located at higher altitudes were nutrient-poor seepage lakes with some groundwater through flow. The data suggests that the subsurface acts as a phosphate source for the surface water bodies and the nutrient rich groundwater inseepage dictates the trophic status of the lakes in the area. The seepage meter measurements verified a strong interaction between groundwater and surface water and revealed spatial distribution of lake seepage and a temporal co-variation in lake seepage rates. A statistical analysis of seepage meter and water level observation time series were useful to show groundwater flow regimes controlling lake seepage. Using the natural tracer analysis and seepage meter measurements, we developed a novel conceptual model for the study site where the differences in lake trophic state and water table behavior were explained by assigning lakes to local and regional groundwater flow regimes. The obtained results provide new knowledge on using natural tracers in complex glacial aquifer systems and can be used in integrated groundwater-surface water management.

Original languageEnglish
Pages (from-to)144-156
Number of pages13
JournalJournal of Hydrology
Volume500
Early online date17 Jul 2013
DOIs
Publication statusPublished - 13 Sep 2013

Fingerprint

esker
headwater
seepage
groundwater
lake
tracer
water level
aquifer
groundwater flow
groundwater-surface water interaction
surface water
trophic status
nutrient
water chemistry
eutrophication
water table
statistical analysis

Keywords

  • Groundwater flow systems
  • Groundwater-surface water interaction
  • Natural tracers
  • Seepage meter

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Interaction of esker groundwater with headwater lakes and streams. / Ala-Aho, Pertti; Rossi, Pekka M.; Kløve, Bjørn.

In: Journal of Hydrology, Vol. 500, 13.09.2013, p. 144-156.

Research output: Contribution to journalArticle

Ala-Aho, Pertti ; Rossi, Pekka M. ; Kløve, Bjørn. / Interaction of esker groundwater with headwater lakes and streams. In: Journal of Hydrology. 2013 ; Vol. 500. pp. 144-156.
@article{04e4ef04963840e99bc2e7f0a263c7d7,
title = "Interaction of esker groundwater with headwater lakes and streams",
abstract = "Groundwater-surface water interactions were studied in a Finnish esker aquifer system where some lakes suffer from periodic water level decline and others from eutrophication. Natural tracers (Ca2+, SiO2 and PO43-) were used on the aquifer scale and seepage meter measurements and water level recordings on the single lake scale to better understand the complex interactions between groundwater, lakes and streams in the area. The natural tracers showed that lakes located in lower landscape positions and connected with streams were richer in tracer concentrations and that their water chemistry resembled that of the groundwater. On the other hand, closed basin lakes located at higher altitudes were nutrient-poor seepage lakes with some groundwater through flow. The data suggests that the subsurface acts as a phosphate source for the surface water bodies and the nutrient rich groundwater inseepage dictates the trophic status of the lakes in the area. The seepage meter measurements verified a strong interaction between groundwater and surface water and revealed spatial distribution of lake seepage and a temporal co-variation in lake seepage rates. A statistical analysis of seepage meter and water level observation time series were useful to show groundwater flow regimes controlling lake seepage. Using the natural tracer analysis and seepage meter measurements, we developed a novel conceptual model for the study site where the differences in lake trophic state and water table behavior were explained by assigning lakes to local and regional groundwater flow regimes. The obtained results provide new knowledge on using natural tracers in complex glacial aquifer systems and can be used in integrated groundwater-surface water management.",
keywords = "Groundwater flow systems, Groundwater-surface water interaction, Natural tracers, Seepage meter",
author = "Pertti Ala-Aho and Rossi, {Pekka M.} and Bj{\o}rn Kl{\o}ve",
note = "This study was funded by the EU 7th Framework programme GENESIS (Contract Number 226536), Academy of Finland AKVA research program, the Renlund Foundation and Maa- ja vesitekniikan tuki ry.",
year = "2013",
month = "9",
day = "13",
doi = "10.1016/j.jhydrol.2013.07.014",
language = "English",
volume = "500",
pages = "144--156",
journal = "Journal of Hydrology",
issn = "0022-1694",
publisher = "Elsevier Science B. V.",

}

TY - JOUR

T1 - Interaction of esker groundwater with headwater lakes and streams

AU - Ala-Aho, Pertti

AU - Rossi, Pekka M.

AU - Kløve, Bjørn

N1 - This study was funded by the EU 7th Framework programme GENESIS (Contract Number 226536), Academy of Finland AKVA research program, the Renlund Foundation and Maa- ja vesitekniikan tuki ry.

PY - 2013/9/13

Y1 - 2013/9/13

N2 - Groundwater-surface water interactions were studied in a Finnish esker aquifer system where some lakes suffer from periodic water level decline and others from eutrophication. Natural tracers (Ca2+, SiO2 and PO43-) were used on the aquifer scale and seepage meter measurements and water level recordings on the single lake scale to better understand the complex interactions between groundwater, lakes and streams in the area. The natural tracers showed that lakes located in lower landscape positions and connected with streams were richer in tracer concentrations and that their water chemistry resembled that of the groundwater. On the other hand, closed basin lakes located at higher altitudes were nutrient-poor seepage lakes with some groundwater through flow. The data suggests that the subsurface acts as a phosphate source for the surface water bodies and the nutrient rich groundwater inseepage dictates the trophic status of the lakes in the area. The seepage meter measurements verified a strong interaction between groundwater and surface water and revealed spatial distribution of lake seepage and a temporal co-variation in lake seepage rates. A statistical analysis of seepage meter and water level observation time series were useful to show groundwater flow regimes controlling lake seepage. Using the natural tracer analysis and seepage meter measurements, we developed a novel conceptual model for the study site where the differences in lake trophic state and water table behavior were explained by assigning lakes to local and regional groundwater flow regimes. The obtained results provide new knowledge on using natural tracers in complex glacial aquifer systems and can be used in integrated groundwater-surface water management.

AB - Groundwater-surface water interactions were studied in a Finnish esker aquifer system where some lakes suffer from periodic water level decline and others from eutrophication. Natural tracers (Ca2+, SiO2 and PO43-) were used on the aquifer scale and seepage meter measurements and water level recordings on the single lake scale to better understand the complex interactions between groundwater, lakes and streams in the area. The natural tracers showed that lakes located in lower landscape positions and connected with streams were richer in tracer concentrations and that their water chemistry resembled that of the groundwater. On the other hand, closed basin lakes located at higher altitudes were nutrient-poor seepage lakes with some groundwater through flow. The data suggests that the subsurface acts as a phosphate source for the surface water bodies and the nutrient rich groundwater inseepage dictates the trophic status of the lakes in the area. The seepage meter measurements verified a strong interaction between groundwater and surface water and revealed spatial distribution of lake seepage and a temporal co-variation in lake seepage rates. A statistical analysis of seepage meter and water level observation time series were useful to show groundwater flow regimes controlling lake seepage. Using the natural tracer analysis and seepage meter measurements, we developed a novel conceptual model for the study site where the differences in lake trophic state and water table behavior were explained by assigning lakes to local and regional groundwater flow regimes. The obtained results provide new knowledge on using natural tracers in complex glacial aquifer systems and can be used in integrated groundwater-surface water management.

KW - Groundwater flow systems

KW - Groundwater-surface water interaction

KW - Natural tracers

KW - Seepage meter

UR - http://www.scopus.com/inward/record.url?scp=84883648041&partnerID=8YFLogxK

U2 - 10.1016/j.jhydrol.2013.07.014

DO - 10.1016/j.jhydrol.2013.07.014

M3 - Article

AN - SCOPUS:84883648041

VL - 500

SP - 144

EP - 156

JO - Journal of Hydrology

JF - Journal of Hydrology

SN - 0022-1694

ER -