Guwahati: More than 200,000 people were affected by floods in the northeastern Indian state of Assam.

Erosion has washed away thousands of hectares of land in seven districts of the state as the flood situation turned grim on July 21, the Assam State Disaster Management Authority (ASDMA) said.

The seven affected districts are Lakhimpur, Golaghat, Morigaon, Jorhat, Dhemaji, Sivasagar and Kokrajhar.

More than 320 villages are under water in the floods that have snapped surface communication by damaging roads, breached embankments and caused large-scale erosion in many areas, the ASDMA said.

The Brahmaputra is flowing above the danger mark at Nematighat in Jorhat and Dhubri, Dhansiri at Numaligarh in Golaghat, Jia Bhorali at NT Road Crossing in Sonitpur district, Sangkosh in Golakganj and Beki at Road Bridge in Barpeta district.

Boats have been pressed into service to rescue and evacuate the marooned people whose houses are under waist-deep to neck-deep water from the over-flowing rivers.

More than 4,200 people have taken shelter in 24 relief camps and relief distribution centers.