Deforestation and urban development along the river banks in the region, combined with seasonal downpours in the Phetchabun Mountains have led to severe flooding in recent years within the province. Flooding in the province in 2007 was described by the Bangkok post as the worst floods in 40 years. On October 4, 2007, 100 rescue workers and 100 soldiers were dispatched to assist stranded residents in tambon Chompu and tambon Ban Mung, where water levels rose more than a meter. On that same day, Phitsanulok Governor Somboon Sripattanawat declared the Noen Maprang District a disaster zone. On October 6, 2007, Pongsagorn Kaenmanee, age 9 was among the first to drown in the flood waters. By October 8, 2007, the floods had killed at least three people in the Wang Thong District, and that district, in addition to Noen Maprang, was declared a disaster zone. On October 8, 2007, Deputy Prime Minister and Social Development and Human Security minister Paiboon Wattanasiritham visited the Phitsanulok Province to assess and address the flooding issues in the province. On October 10, 2007, the Office of Disaster Prevention and Mitigation sent boats out to deliver food and water supplies to residents of Bang Krathum District, which was cut off by floods. On October 12, 2007, the flooding took the life of a fifth villager in the province, who drowned after being swept away while he was rowing his boat to cast a fishing net. On October 14, 2007, flood water pressure sent inflows through the Nakhon Phitsanulok Municipality's sewage system, flooding three communities. On October 15, 2007, the Royal Irrigation Department announced plans to construct six dams on the Wang Thong River as an attempt to solve the problem of seasonal flooding. On October 16, 2007 Thung Salaeng Luang National Park was temporarily closed for fear that tourists may become trapped in its caves by flood waters (This was prompted by an incident in Surat Thani's Khao Sok National Park where a group of cave exploring tourists drowned). A meeting of senior officials is scheduled for October 31, 2007 to discuss the progress of an environmental impact assessment (EIA) of the dam proposal. At least one of the dams will be in Thung Salaeng Luang National Park, but officials ensure that it will not be built in a wildlife sanctuary area. Flooding in the region is a recurring problem in Phitsanulok Province this time of year. In 2006, for example, between August 20 and December 13, over 22,000 people in 70 villages within Phitsanulok were affected by flooding, and over of farmland and 194 roads within the province were submerged by flood waters.