(Justmeans.com / CSR News) - A short monsoon and low rainfall have cut the region’s economic lifeblood to a trickle

One of the worst droughts in Southeast Asia in decades has lowered water levels in the Mekong River, cutting people off from the source of their livelihood and hampering the regional economy, the Bangkok Post reports.

“Severe drought will have an impact on agriculture, food security, access to clean water and river transport and will affect the economic development of people already facing serious poverty. The northern provinces are amongst the poorest areas for both Lao PDR and Thailand,” according to a press release by the Mekong River Commission (MRC), a forum for joint development of the river basin.

With some areas of the river left only 35 centimeters deep, Thai officials halted barge traffic and ferries.

While the Mekong is a vital regional transport link, trade activity is now being shifted to highways. Thailand’s Chiang Rai customs office said truck traffic on the road to Yunnan has recently increased from 50 trailers per month to 50 per day, the Bangkok Post reports.

Agriculture and tourism are other industries relying on the river. Some tour operators have stopped running ferries around the tourist area of Luang Prabang, according to the MRC release.

Thailand’s Irrigation Department has started emergency conservation measures, the Pattaya Daily News reports. The department is using mobile pumps for water distribution and emphasizing the need to conserve water. Rice farmers are being urged to plant crops that require less water and to refrain from planting a second rice crop.

The people most affected are subsistence farmers, according to a lecturer at Ubon Ratchathani University.

“When farmers cannot rely on water from the Mekong, many of them will have to seek new jobs and change their way of life,” Kanokwan Manorom told the Pattaya Daily News.

The drought was caused by an early end to the monsoon season coupled with lower-than-average rainfalls since September, according to a preliminary assessment by the MRC.

Although Chinese dams have been popular scapegoats for problems of water quantity on the Mekong, the MRC’s assessment focused on climatic factors.

Meanwhile, the Thai government is trying to raise concerns about more coordinated river management with China, which is not a part of the MRC.

“We can see the level of the water is getting lower,” said Thai premier Abhisit Vejjajiva, AFP reports. “We will ask the foreign ministry to talk with a representative from China in terms of co-operation and in terms of management systems in the region.”

Water levels are expected to continue to drop until late April, according to the MRC report.

More on the Mekong River from Circle of Blue: Visioning Flowing Waters, From Laos to Cambodia