407 records · 1986–2025
Overview
Network-wide summary of groundwater salinity across the Chtouka aquifer
Monitoring wells
94
407 samples in total
Date range covered
1986–2025
first to last sampling date
Average EC
1,821
µS/cm · median 1,050
Above FAO threshold
14.9%
wells with mean EC > 3,000 µS/cm
Well locations by salinity class
94 wells · all years · low < 1 500, medium ≤ 3,000, high > 3,000 µS/cm
Low (57)Medium (23)High (14)no data (0)
Initialising map…
Sampling yearAll years
All198620032025
Salinity trend by well
Select a well to see how its EC changes over time
Mean EC
6,961
Latest EC
2,820
Change
+2,115
Wells per salinity class
Low · < 1,500 µS/cm57 · 61%
Medium · 1,500 – 3,000 µS/cm23 · 24%
High · > 3,000 µS/cm14 · 15%
no data · EC not recorded0 · 0%
0 of 407 sample records have no EC value and are reported as “no data”.
Highest mean EC
Top 6 wells, µS/cm
- 1205/7813 samples6,961
- 4209/709 samples6,085
- 70/36301 sample5,980
- NP105_221 sample5,411
- 1336/692 samples5,405
- 70/42091 sample5,200
Average EC by year
Mean electrical conductivity across all sampled wells, 1986–2025