Indian technical team on Thursday estimated around Rs 5.25 billion cost for reconstructing the embankment breached by the Saptakoshi River.
A team including flood experts forwarded a letter with the estimation to the government of Indian state of Bihar after an inspection and study in the affected areas and the embankment.
Earlier, the government of Bihar had provided only Rs 80 million for reconstruction.
Meanwhile, a joint technical team of the Ministry for Water Resources from Nepal and India continued working on the reconstruction today.

Erosion by the Madhumati and Nabaganga rivers continue to wreak havoc at different villages under Lohagara and Kalia upazila in Narail, rendering at least 1,000 people homeless in the last two weeks.
About 500 dwelling houses at 20 villages under the two upazilas have been devoured during the period leaving around 1,000 people homeless, according to sources at union parishads concerned.
Besides, at least 1,500 acres of crop land have gone into the rivers, the sources said.

Cities on rivers are most at risk from rising water caused by climate change, according to a report from the UN and the World Bank.

The report, Climate Resilient Cities, gives city planners practical advice, noting that eight of the planet's ten largest cities are on rivers or seas and as such vulnerable to flooding, rising sea levels and storms.

With more people living in cities than in the countryside, the advice could save many lives.