Overview       Project Partners       Field Measurements       Photo Galery       System Used       Publications       Links    


Rohoznik (SK)


Geographical location: Malacky District, Morava River Basin – about 2 km south of Rohoznik town in the Zahorska nizina (lowland).

Type of waterway: “Freshwater continental lake”, an artificial lake – remediated clay mining pit

Contamination type and problem: heavy metals, fertilizers

The sludge at the bottom of the lake is potentially contaminated by remnants after mining activities (heavy metals) and drainage of arable land (nitrates, sulphates, phosphorous). Transport of soil and clay into newly created lake from surrounding agricultural land and mining pit slopes continues, filling up the deeper parts of the lake.

Typical water depth: 2-4 m, maximum depth: 6 m

Water conductivity: 1300 μS/cm

Surveys performed: GPR/Seismic

Pictures:

  

 

 

 

 

Seismic profile recorded

 

 

 

    
Seismic profile   Survey preparation
Location map   Sludge bottom
     
 

 

 

Preparation for the survey
 

 

 

Map of the remediated mining pit

 

 

 

Sludge bottom at the surveyed area