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Macva - Semberija Αquifer - 113

Serbia - Bosnia and Herzegovina

The alluvial part of the aquifer has the following structure:

Aquifer type 3

State border follows major river or lake, alluvial aquifer connected to river, little transboundary flow.

The alluvial part of the aquifer made up of Quaternary alluvial gravels, sandy gravels, sands, with clayey lenses; there is no transboundary flow. Drina River is a hydraulic boundary (and country border) dividing the body into two separate aquifers. In Semberija (Bosnia and Herzegovina), groundwater flow is from south to north (towards the Sava River). The Semberija alluvium aquifer is mainly recharged by the Drina River. :

The thermo-mineral part of the aquifer has the following structure:

Aquifer type 4

Large deep aquifer, recharged far from border, not connected to local surface water and groundwater.

The thermo-mineral part of the aquifer is made up of Mesozoic limestones and has strong links to surface water systems. Groundwater is 40-60% of total water use in the Serbian part, and 100% in the part in Bosnia and Herzegovina.

Macva - Semberija ΑquiferSerbia
Bosnia and Herzegovina
Area (sq. km) 967 250
Thickness: mean, max (m) Alluvial aquifer: 35–60, 75–100; thermo-mineral/Mesozoic limestone aquifer: >1 000 m
Groundwater uses and functions 50-75% drinking water, <25% for irrigation,
industry and livestock, and support of ecosystems.
Drinking water, irrigation, industry and livestock.
Pressure factors Agriculture and wastewater, some industry.
Local and moderate increase in pumping lifts,
no declines in groundwater levels. Local and
moderate nitrogen and pesticides from agriculture,
local and moderate heavy metals and organics
from industry, natural Fe and Mn in alluvium.
Agriculture and wastewater; local and
moderate increase in pumping lifts, no
significant declines in groundwater levels.
Local and moderate nitrogen and
pesticides from agriculture.
Groundwater management measures Abstraction control, monitoring of groundwater,
protection zones and wastewater treatment need
improvement, other management measures need
to be introduced or are currently planned.
Groundwater abstraction regulation and
quantity monitoring, protection zones, and
good agricultural practices used and effective,
water use efficiency, public awareness,
wastewater treatment need to be applied.
Other information No transboundary impact. Possibly at
chemical risk, not at quantitative risk.
No transboundary impact. Research regarding the
exploitation of the thermo-mineral aquifer has been
conducted for the last two years. There are significant
possibilities for the groundwater to be used for energy
production and agriculture; more intensive cooperation
between Bosnia and Herzegovina and Serbia regarding
the equitable and sustainable utilisation of this aquifer is
needed. Agreed delineation of transboundary groundwater,
and development of monitoring programmes are needed.