INKA001

Arge Island

Oceanic Isand

Karnataka State

Arabian Sea  (The island is located nearly 2.86 km from the Karwar Port in Uttara Kannada district)

14°44'23.72''N
74°9'20.80.44''E

0.1346 sq.km

Less than 2 sq.km

Rocky cliff

Around 38 m (Data extracted from Google earth)

The soil of Uttara Kannada district is mostly lateritic type, and is distributed in the pediplain area. It is characterised by high iron and aluminium content. It is mostly red in colour, though yellow loamy, pale to bright red colours are also seen. The major soil types are (i) hilly soil (ii) lateritic (iii) loamy and (iv) semi-black cotton (Source: CGWB Report, 2006)

The major water bearing formations of Uttara Kannada includes- i) Shallow aquifers of alluvium along the stream courses, along coast, creeks, weathered zones of schists, metasedimentaries and metavolcanics occurring between the depths of 3 to 20 mbgl (ii) Deeper aquifers of fractured and jointed schists, gneisses and metavolacanics and meta sedimentaries up to 200 mbgl Net annual ground water availability is 70765 (ham)

The water bearing formations are weathered and fractured gneiss, schist & granite and alluvium. The water level during pre-monsoon varies between 1.85 mbgl to 15.17 mbgl, while during post-monsoon, it is between 1.65 mbgl to 9.40 mbgl. Nitrate, at around 140 ppm is more than the permissible limit. The water type is Ca - Mg bicarbonate to Na Chloride (Source: CGWB Report, 2006)